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FEATURES Single- or Dual-Supply Operation Low Noise: 4.7 nV/Hz @ 1 kHz Wide Bandwidth: 3.4 MHz Low Offset Voltage: 100 V Very Low Drift: 0.2 V/ C Unity Gain Stable No Phase Reversal APPLICATIONS Digital Scales Multimedia Strain Gages Battery Powered Instrumentation Temperature Transducer Amplifier
Low Noise, Low Drift Single-Supply Operational Amplifiers OP113/OP213/OP413
PIN CONNECTIONS 8-Lead Narrow-Body SO 8-Lead Plastic DIP
NULL -IN A +IN A V- 1 2 3 4 8 7 6 5 NC V+ OUT A NULL
NULL -IN A +IN A V-
1
8
NC V+ OUT A
OP113
4 5
NULL
NC = NO CONNECT
OP113
NC = NO CONNECT
8-Lead Narrow-Body SO
8-Lead Plastic DIP
OUT A -IN A
1
8
V+ OUT B -IN B
OUT A -IN A +IN A V-
1 2 3 4
8 7 6 5
V+ OUT B -IN B +IN B
OP213
4 5
GENERAL DESCRIPTION
+IN A V-
The OP113 family of single supply operational amplifiers features both low noise and drift. It has been designed for systems with internal calibration. Often these processor-based systems are capable of calibrating corrections for offset and gain, but they cannot correct for temperature drifts and noise. Optimized for these parameters, the OP113 family can be used to take advantage of superior analog performance combined with digital correction. Many systems using internal calibration operate from unipolar supplies, usually either +5 volts or +12 volts. The OP113 family is designed to operate from single supplies from +4 volts to +36 volts, and to maintain its low noise and precision performance. The OP113 family is unity gain stable and has a typical gain bandwidth product of 3.4 MHz. Slew rate is in excess of 1 V/s. Noise density is a very low 4.7 nV/Hz, and noise in the 0.1 Hz to 10 Hz band is 120 nV p-p. Input offset voltage is guaranteed and offset drift is guaranteed to be less than 0.8 V/C. Input common-mode range includes the negative supply and to within 1 volt of the positive supply over the full supply range. Phase reversal protection is designed into the OP113 family for cases where input voltage range is exceeded. Output voltage swings also include the negative supply and go to within 1 volt of the positive rail. The output is capable of sinking and sourcing current throughout its range and is specified with 600 loads. Digital scales and other strain gage applications benefit from the very low noise and low drift of the OP113 family. Other applications include use as a buffer or amplifier for both A/D and
+IN B
OP213
14-Lead Plastic DIP
16-Lead Wide-Body SO
OUT A -IN A +IN A V+ +IN B -IN B OUT B NC 8 9 1 16 OUT D -IN D +IN D
OUT A -IN A +IN A V+ +IN B -IN B OUT B
1 2 3 4 5 6 7
14 OUT D 13 -IN D 12 +IN D
OP413
V- +IN C -IN C OUT C NC
OP413
11 V- 10 +IN C 9 8 -IN C OUT C
NC = NO CONNECT
D/A sigma-delta converters. Often these converters have high resolutions requiring the lowest noise amplifier to utilize their full potential. Many of these converters operate in either single supply or low supply voltage systems, and attaining the greater signal swing possible increases system performance. The OP113 family is specified for single +5 volt and dual 15 volt operation over the XIND--extended industrial (-40C to +85C) temperature range. They are available in plastic and SOIC surface mount packages.
REV. C
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 (c) Analog Devices, Inc., 1998
OP113/OP213/OP413-SPECIFICATIONS
ELECTRICAL CHARACTERISTICS (@ V =
S
15.0 V, TA = +25 C unless otherwise noted)
"E" Grade Min Typ Max 75 125 100 150 125 175 600 700 50 +14 116 116 2.4 2.4 8 0.2 +14 +13.9 -14.5 40 103 100 120 120 3 3.8 18 -14.5 40 100 97 3 3.8 18 150 0.8 +14 +13.9 -14.5 -14.5 "F" Grade Min Typ Max 150 225 250 325 275 350 600 700 50 +14 Units V V V V V V nA nA nA V dB dB V/V V/V V/V V V/C V V V V mA dB dB mA mA V
Parameter INPUT CHARACTERISTICS Offset Voltage
Symbol VOS
Conditions OP113 -40C TA +85C OP213 -40C TA +85C OP413 -40C TA +85C VCM = 0 V, -40C TA +85C VCM = 0 V -40C TA +85C -15 V VCM +14 V -15 V VCM +14 V, -40C TA +85C OP113, OP213, RL = 600 , -40C TA +85C OP413, R L = 1 k, -40C TA +85C RL = 2 k, -40C TA +85C Note 1 Note 2 RL = 2 k RL = 2 k, -40C TA +85C RL = 2 k RL = 2 k, -40C TA +85C
Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection
IB IOS VCM CMR
240
-15 100 97 1 1 2
-15 96 94 1 1 2
Large Signal Voltage Gain
A VO
Long-Term Offset Voltage1 Offset Voltage Drift
VOS VOS/T VOH
300 1.5
OUTPUT CHARACTERISTICS
Output Voltage Swing High
Output Voltage Swing Low
VOL
Short Circuit Limit POWER SUPPLY Power Supply Rejection Ratio
ISC PSRR VS = 2 V to 18 V VS = 2 V to 18 V -40C TA +85C VOUT = 0 V, R L = , VS = 18 V -40C TA +85C
Supply Current/Amplifier
ISY
Supply Voltage Range AUDIO PERFORMANCE THD + Noise Voltage Noise Density Current Noise Density Voltage Noise DYNAMIC PERFORMANCE Slew Rate Gain Bandwidth Product Channel Separation Settling Time
VS VIN = 3 V rms, R L = 2 k f = 1 kHz, f = 10 Hz f = 1 kHz f = 1 kHz 0.1 Hz to 10 Hz RL = 2 k VOUT = 10 V p-p RL = 2 k, f = 1 kHz to 0.01%, 0 V to 10 V Step
+4
+4
en in e n p-p SR GBP
0.0009 9 4.7 0.4 120 0.8 1.2 3.4 105 9 0.8
0.0009 9 4.7 0.4 120 1.2 3.4 105 9
% nV/Hz nV/Hz pA/Hz nV p-p V/s MHz dB s
tS
NOTES 1 Long-term offset voltage is guaranteed by a 1000-hour life test performed on three independent lots at 125 C, with an LTPD of 1.3. 2 Guaranteed specifications, based on characterization data. Specifications subject to change without notice.
-2-
REV. C
OP113/OP213/OP413 ELECTRICAL CHARACTERISTICS (@ V = +5.0 V, T = +25 C unless otherwise noted)
S A
Parameter INPUT CHARACTERISTICS Offset Voltage
Symbol VOS
Conditions OP113 -40C TA +85C OP213 -40C TA +85C OP413 -40C TA +85C VCM = 0 V, V OUT = 2 -40C TA +85C VCM = 0 V, V OUT = 2 -40C TA +85C 0 V VCM 4 V 0 V VCM 4 V, -40C TA +85C OP113, OP213, RL = 600 , 2 k 0.01 V VOUT 3.9 V OP413, R L = 600, 2 k, 0.01 V VOUT 3.9 V Note 1 Note 2 RL RL RL RL RL = 600 k = 100 k, -40C TA +85C = 600 , -40C TA +85C = 600 , -40C TA +85C = 100 k, -40C TA +85C
"E" Grade Min Typ Max 125 175 150 225 175 250 650 750 50 +4 106
"F" Grade Min Typ Max 175 250 300 375 325 400 650 750 50 +4 90 87 2 1
Units V V V V V V nA nA nA V dB dB V/V V/V V V/C V V V mV mV mA mA mA % nV/Hz nV/Hz pA/Hz nV p-p V/s MHz s
Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection
IB IOS VCM CMR
300
0 93 90 2 1
Large Signal Voltage Gain
A VO
Long-Term Offset Voltage1 Offset Voltage Drift
VOS VOS/T VOH
0.2 4.0 4.1 3.9 30 1.6
200 1.0 4.0 4.1 3.9 8 8 30
350 1.5
OUTPUT CHARACTERISTICS
Output Voltage Swing High
Output Voltage Swing Low Short Circuit Limit POWER SUPPLY Supply Current Supply Current AUDIO PERFORMANCE THD + Noise Voltage Noise Density Current Noise Density Voltage Noise DYNAMIC PERFORMANCE Slew Rate Gain Bandwidth Product Settling Time
VOL ISC ISY ISY
8 8
VOUT = 2.0 V, No Load -40C TA +85C VOUT = 0 dBu, f = 1 kHz f = 10 Hz f = 1 kHz f = 1 kHz 0.1 Hz to 10 Hz RL = 2 k to 0.01%, 2 V Step 0.6
2.7 3.0 0.001 9 4.7 0.45 120 0.6 3.5 5.8
2.7 3.0
en in e n p-p SR GBP tS
0.001 9 4.7 0.45 120 0.9 3.5 5.8
NOTES 1 Long-term offset voltage is guaranteed by a 1000 hour life test performed on three independent lots at 125 C, with an LTPD of 1.3. 2 Guaranteed specifications, based on characterization data. Specifications subject to change without notice.
REV. C
-3-
OP113/OP213/OP413
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . 10 V Output Short-Circuit Duration to GND . . . . . . . . . . Indefinite Storage Temperature Range P, S Package . . . . . . . . . . . . . . . . . . . . . . . . -65C to +150C Operating Temperature Range OP113/OP213/OP413E, F . . . . . . . . . . . . . . -40C to +85C Junction Temperature Range P, S Package . . . . . . . . . . . . . . . . . . . . . . . . -65C to +150C Lead Temperature Range (Soldering, 60 sec) . . . . . . . +300C Package Type 8-Lead Plastic DIP (P) 8-Lead SOIC (S) 14-Lead Plastic DIP (P) 16-Lead SOIC (S)
2 JA JC
ABSOLUTE MAXIMUM RATINGS 1
ORDERING GUIDE
Model OP113EP OP113ES OP113FP OP113FS OP213EP OP213ES OP213FP OP213FS OP413EP OP413ES OP413FP OP413FS
Temperature Range -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C
Package Description 8-Lead Plastic DIP 8-Lead SOIC 8-Lead Plastic DIP 8-Lead SOIC 8-Lead Plastic DIP 8-Lead SOIC 8-Lead Plastic DIP 8-Lead SOIC 14-Lead Plastic DIP 16-Lead Wide SOIC 14-Lead Plastic DIP 16-Lead Wide SOIC
Package Options N-8 SO-8 N-8 SO-8 N-8 SO-8 N-8 SO-8 N-14 R-16 N-14 R-16
Units C/W C/W C/W C/W
103 158 83 92
43 43 39 27
NOTES 1 Absolute maximum ratings apply to both DICE and packaged parts, unless otherwise noted. 2 JA is specified for the worst case conditions, i.e., JA is specified for device in socket for cerdip, P-DIP, and LCC packages; JA is specified for device soldered in circuit board for SOIC package.
-4-
REV. C
OP113/OP213/OP413
APPLICATIONS
The OP113, OP213 and OP413 form a new family of high performance amplifiers that feature precision performance in standard dual supply configurations and, more importantly, maintain precision performance when a single power supply is used. In addition to accurate dc specifications, it is the lowest noise single supply amplifier available with only 4.7 nV/Hz typical noise density. Single supply applications have special requirements due to the generally reduced dynamic range of the output signal. Single supply applications are often operated at voltages of +5 volts or +12 volts, compared to dual supply applications with supplies of 12 volts or 15 volts. This results in reduced output swings. Where a dual supply application may often have 20 volts of signal output swing, single supply applications are limited to, at most, the supply range and, more commonly, several volts below the supply. In order to attain the greatest swing the single supply output stage must swing closer to the supply rails than in dual supply applications. The OP113 family has a new patented output stage that allows the output to swing closer to ground, or the negative supply, than previous bipolar output stages. Previous op amps had outputs that could swing to within about ten millivolts of the negative supply in single supply applications. However, the OP113 family combines both a bipolar and a CMOS device in the output stage, enabling it to swing to within a few hundred microvolts of ground. When operating with reduced supply voltages, the input range is also reduced. This reduction in signal range results in reduced signal-to-noise ratio, for any given amplifier. There are only two ways to improve this: increase the signal range or reduce the noise. The OP113 family addresses both of these parameters. Input signal range is from the negative supply to within one volt of the positive supply over the full supply range. Competitive parts have input ranges that are a half a volt to five volts less than this. Noise has also been optimized in the OP113 family. At 4.7 nV/Hz, it is less than one fourth that of competitive devices.
Phase Reversal
2 mV trim range may be somewhat excessive. Reducing the trimming potentiometer to a 2 k value will give a more reasonable range of 400 V.
+15V R5 1k 2N2219A
1 2 8 3 2 16 14 15
-15V
+10.000V
1 3 9 4 6 11 12 13 7
A2
AD588BD
1/2 OP213
+10.000V R3 17.2k 0.1% R4 500
8 10
10 F
350 LOAD CELL 100mV F.S.
6
CMRR TRIM 10-TURN T.C. LESS THAN 50ppm/ C A1
7
5
4
1/2 OP213
R2 301 0.1%
OUTPUT 0 10V F.S.
-15V R1 17.2k 0.1%
Figure 1. Precision Load Cell Scale Amplifier
APPLICATION CIRCUITS
A High Precision Industrial Load-Cell Scale Amplifier
The OP113 family makes an excellent amplifier for conditioning a load-cell bridge. Its low noise greatly improves the signal resolution, allowing the load cell to operate with a smaller output range, thus reducing its nonlinearity. Figure 1 shows one half of the OP113 family used to generate a very stable 10.000 V bridge excitation voltage while the second amplifier provides a differential gain. R4 should be trimmed for maximum common-mode rejection.
A Low Voltage Single Supply, Strain-Gage Amplifier
The OP113 family is protected against phase reversal as long as both of the inputs are within the supply ranges. However, if there is a possibility of either input going below the negative supply (or ground in the single supply case), the inputs should be protected with a series resistor to limit input current to 2 mA.
OP113 Offset Adjust
The true zero swing capability of the OP113 family allows the amplifier in Figure 2 to amplify the strain-gage bridge accurately even with no signal input while being powered by a single +5 volt supply. A stable 4.000 V bridge voltage is made possible by the rail-to-rail OP295 amplifier, whose output can swing to within a millivolt of either rail. This high voltage swing greatly increases the bridge output signal without a corresponding increase in bridge input.
+5V
2 8
2.500V
3 2
IN
6
2N2222A
1
The OP113 has the facility for external offset adjustment, using the industry standard arrangement. Pins 1 and 5 are used in conjunction with a potentiometer of 10 k total resistance, connected with the wiper to V- (or ground in single supply applications). The total adjustment range is about 2 mV using this configuration. Adjusting the offset to zero has minimal effect on offset drift (assuming the potentiometer has a tempco of less than 1000 ppm/C). Adjustment away from zero, however, (like all bipolar amplifiers) will result in a TCVOS of approximately 3.3 V/C for every millivolt of induced offset. It is therefore not generally recommended that this trim be used to compensate for system errors originating outside of the OP113. The initial offset of the OP113 is low enough that external trimming is almost never required but, if necessary, the REV. C -5-
1/2 OP295
4
OUT GND
4
REF43
4.000V 350 35mV F.S. R8 12.0k R7 20.0k
5 6 3
+5V
8
1/2 OP295
4
OUTPUT 0V 3.5V
7
1/2 OP213
2
R3 20k
1
R2 20k
R4 100k
R1 100k
R5 2.10k
R6 27.4
RG = 2,127.4
Figure 2. Single Supply Strain-Gage Amplifier
OP113/OP213/OP413
A High Accuracy Linearized RTD Thermometer Amplifier A High Accuracy Thermocouple Amplifier
Zero suppressing the bridge facilitates simple linearization of the RTD by feeding back a small amount of the output signal to the RTD (Resistor Temperature Device). In Figure 3 the left leg of the bridge is servoed to a virtual ground voltage by amplifier A1, while the right leg of the bridge is also servoed to zero-volt by amplifier A2. This eliminates any error resulting from common-mode voltage change in the amplifier. A three-wire RTD is used to balance the wire resistance on both legs of the bridge, thereby reducing temperature mismatch errors. The 5.000 V bridge excitation is derived from the extremely stable AD588 reference device with 1.5 ppm/C drift performance. Linearization of the RTD is done by feeding a fraction of the output voltage back to the RTD in the form of a current. With just the right amount of positive feedback, the amplifier output will be linearly proportional to the temperature of the RTD.
-15V +15V
16 11 12 13 4 6 7 9 8 10 14 15 2
Figure 4 shows a popular K-type thermocouple amplifier with cold-junction compensation. Operating from a single +12 volt supply, the OP113 family's low noise allows temperature measurement to better than 0.02C resolution from 0C to 1000C range. The cold-junction error is corrected by using an inexpensive silicon diode as a temperature measuring device. It should be placed as close to the two terminating junctions as physically possible. An aluminum block might serve well as an isothermal system.
+5.000V R1 10.7k 1N4148 D1 - + - + R6 200 R3 53.6
3
+12V 0.1 F
2
REF02EZ 6
4
R5 40.2k
R9 124k +12V 10 F + 0.1 F
R2 2.74k
R8 453
2
K-TYPE THERMOCOUPLE 40.7 V/ C
8
1/2 OP213
4
1
0V TO 10.00V (0 C TO 1000 C)
AD588BD
R4 5.62k R3 50 R1 8.25k RG FULL SCALE ADJUST R2 8.25k R5 4.02k R7 100
1 3
Figure 4. Accurate K-Type Thermocouple Amplifier
10 F RW1
+15V
6 8
100 RTD
R4 100 RW2
A2
5 4
7
1/2 OP213
R8 49.9k
VOUT (10mV/ C) -1.50V = -150 C +5.00V = +500 C R9 5k LINEARITY ADJUST @1/2 F.S.
R6 should be adjusted for a zero-volt output with the thermocouple measuring tip immersed in a zero-degree ice bath. When calibrating, be sure to adjust R6 initially to cause the output to swing in the positive direction first. Then back off in the negative direction until the output just stops changing.
An Ultralow Noise, Single Supply Instrumentation Amplifier
-15V RW3
2
A1
3
1
1/2 OP213
Figure 3. Ultraprecision RTD Amplifier
Extremely low noise instrumentation amplifiers can be built using the OP113 family. Such an amplifier that operates off a single supply is shown in Figure 5. Resistors R1-R5 should be of high precision and low drift type to maximize CMRR performance. Although the two inputs are capable of operating to zero volt, the gain of -100 configuration will limit the amplifier input common mode to not less than 0.33 V.
+5V TO +36V + VIN -
To calibrate the circuit, first immerse the RTD in a zero-degree ice bath or substitute an exact 100 resistor in place of the RTD. Adjust the ZERO ADJUST potentiometer for a 0.000 V output, then set R9 LINEARITY ADJUST potentiometer to the middle of its adjustment range. Substitute a 280.9 resistor (equivalent to 500C) in place of the RTD, and adjust the FULL-SCALE ADJUST potentiometer for a full-scale voltage of 5.000 V. To calibrate out the nonlinearity, substitute a 194.07 resistor (equivalent to 250C) in place of the RTD, then adjust the LINEARITY ADJUST potentiometer for a 2.500 V output. Check and readjust the full-scale and half-scale as needed. Once calibrated, the amplifier outputs a 10 mV/C temperature coefficient with an accuracy better than 0.5C over an RTD measurement range of -150C to +500C. Indeed the amplifier can be calibrated to a higher temperature range, up to 850C.
1/2 OP213 1/2 OP213
*R1 10k *R2 10k *R3 10k *RG + 12.7 ) 25ppm/ C *R4 10k
VOUT
(200 *ALL RESISTORS 0.1%,
GAIN =
20k +6 RG
Figure 5. Ultralow Noise, Single Supply Instrumentation Amplifier
-6-
REV. C
OP113/OP213/OP413
Supply Splitter Circuit Low Noise Voltage Reference
The OP113 family has excellent frequency response characteristic that makes it an ideal pseudo-ground reference generator as shown in Figure 6. The OP113 family serves as a voltage follower buffer. In addition, it drives a large capacitor that serves as a charge reservoir to minimize transient load changes, as well as a low impedance output device at high frequencies. The circuit easily supplies 25 mA load current with good settling characteristics.
VS+ = +5V +12V R3 2.5k C1 0.1 F R1 5k 2 8 R4 100 + C2 1F
Few reference devices combine low noise and high output drive capabilities. Figure 7 shows the OP113 family used as a twopole active filter that band limits the noise of the 2.500 V reference. Total noise measures 3 V p-p.
+5V +5V 2 IN 10k OUT 6 10k + C2 10 F 3 4 - 10 F + 2
8
1/2 OP113
1
OUTPUT +2.500V
REF43
GND 4
3 V p-p NOISE
Figure 7. Low Noise Voltage Reference
1 VS+ 2
1/2 OP113
3 R2 5k 4
+5 V Only Stereo DAC for Multimedia
OUTPUT
Figure 6. False Ground Generator
The OP113 family's low noise and single supply capability are ideally suited for stereo DAC audio reproduction or sound synthesis applications such as multimedia systems. Figure 8 shows an 18-bit stereo DAC output setup that is powered from a single +5 volt supply. The low noise preserves the 18-bit dynamic range of the AD1868. For DACs that operate on dual supplies, the OP113 family can also be powered from the same supplies.
+5V SUPPLY
AD1868
1 2 3 4 5 6 18-BIT LL DAC 18-BIT DL SERIAL REG. CK DR 18-BIT LR SERIAL REG. VREF VL
VBL
16
8
15 7.68k VOL 14 330pF 13 AGND 12 VREF VOR 10 7.68k VS 9 330pF 5 9.76k 6 11 9.76k
220 F
1/2 OP213
1
+- 47k
LEFT CHANNEL OUTPUT
100pF 7.68k 7.68k
7 DGND 18-BIT DAC 8 VBR
100pF 220 F
1/2 OP213
7
+- 47k
RIGHT CHANNEL OUTPUT
Figure 8. +5 V Only 18-Bit Stereo DAC
SoundPort is a registered trademark of Analog Devices, Inc.
REV. C
-7-
OP113/OP213/OP413
Low Voltage Headphone Amplifiers Precision Voltage Comparator
Figure 9 shows a stereo headphone output amplifier for the AD1849 16-bit SoundPort(R) Stereo Codec device. The pseudoreference voltage is derived from the common-mode voltage generated internally by the AD1849, thus providing a convenient bias for the headphone output amplifiers.
OPTIONAL GAIN 1k VREF 10 F LOUT1L 31 L VOLUME CONTROL 10k 47k
5k +5V
With its PNP inputs and zero volt common-mode capability, the OP113 family can make useful voltage comparators. There is only a slight penalty in speed in comparison to IC comparators. However, the significant advantage is its voltage accuracy. For example, VOS can be a few hundred microvolts or less, combined with CMRR and PSRR exceeding 100 dB, while operating on 5 V supply. Standard comparators like the 111/311 family operate on 5 volts, but not with common-mode at ground, nor with offset below 3 mV. Indeed, no commercially available single supply comparator has a VOS less than 200 V. Figure 11 shows the OP113 family response to a 10 mV overdrive signal when operating in open loop. The top trace shows the output rising edge has a 15 s propagation delay, while the bottom trace shows a 7 s delay on the output falling edge. This ac response is quite acceptable in many applications.
10mV OVERDRIVE +2.5V 0V 25k -2.5V 100 +5V
1/2 OP213
16
220 F +
HEADPHONE LEFT
AD1849
VREF
+5V
1/2 OP213
CMOUT 19 10k LOUT1R 29 10 F R VOLUME CONTROL 1k 5k
100 90
1/2 OP113
1/2 OP213
16
220 F + 47k
tr = tf = 5ms
HEADPHONE RIGHT
2V
5s
OPTIONAL GAIN VREF
Figure 9. Headphone Output Amplifier for Multimedia Sound Codec
Low Noise Microphone Amplifier for Multimedia
10 0%
The OP113 family is ideally suited as a low noise microphone preamp for low voltage audio applications. Figure 10 shows a gain of 100 stereo preamp for the AD1849 16-bit SoundPort Stereo Codec chip. The common-mode output buffer serves as a "phantom power" driver for the microphones.
10k +5V
2V
Figure 11. Precision Comparator
10 F LEFT ELECTRET CONDENSER MIC INPUT
50
1/2 OP213
The low noise and 250 V (maximum) offset voltage enhance the overall dc accuracy of this type of comparator. Note that zero crossing detectors and similar ground referred comparisons can be implemented even if the input swings to -0.3 volts below ground.
17
MINL
20
10k +5V
100
AD1849
19
CMOUT
1/2 OP213
100 20 10k 10 F 50
RIGHT ELECTRET CONDENSER MIC INPUT
1/2 OP213
15
MINR
10k
Figure 10. Low Noise Stereo Microphone Amplifier for Multimedia Sound Codec
SoundPort is a registered trademark of Analog Device, Inc.
-8-
REV. C
OP113/OP213/OP413
100 VS = 15V TA = +25 C 400 OP AMPS PLASTIC PKG 150 VS = 15V -40 C TA +85 C 400 OP AMPS PLASTIC PKG 80 120
60 UNITS UNITS 40
90
60
20
30
0 -50
-40
-30 -20 -10 0 10 20 30 INPUT OFFSET VOLTAGE, VOS - V
40
50
0
0
0.1
0.2
0.3
0.4 0.5 TCVOS -
0.6 V
0.7
0.8
0.9
1.0
Figure 12a. OP113 Input Offset (VOS) Distribution @ 15 V
Figure 13a. OP113 Temperature Drift (TCVOS ) Distribution @ 15 V
500 VS = 15V TA = +25 C 896 (PLASTIC)
500
400
OP AMPS
400
VS = 15V -40 C TA +85 C 896 (PLASTIC) OP AMPS
300 UNITS UNITS 200
300
200
100
100
0 -100
0 -80 -60 -40 -20 0 20 40 60 80 100 0 0.1 0.2 0.3 INPUT OFFSET VOLTAGE, VOS - V 0.4 0.5 TCVOS - 0.6 V 0.7 0.8 0.9 1.0
Figure 12b. OP213 Input Offset (VOS) Distribution @ 15 V
Figure 13b. OP213 Temperature Drift (TCVOS ) Distribution @ 15 V
500 VS = 400 15V
600
TA = +25 C 1220 OP AMPS PLASTIC PKG
500
400 300 UNITS UNITS 300
VS = 15V -40 C TA +85 C 1220 OP AMPS PLASTIC PKG
200 200 100
100
0 -60
0 -40 -20 0 20 40 60 80 100 INPUT OFFSET VOLTAGE, VOS - V 120 140 0 0.1 0.2 0.3 0.4 0.5 TCVOS - 0.6 V 0.7 0.8 0.9 1.0
Figure 12c. OP413 Input Offset (VOS) Distribution @ 15 V
Figure 13c. OP413 Temperature Drift (TCVOS ) Distribution @ 15 V
REV. C
-9-
OP113/OP213/OP413
1000 500 800 VCM = 0V 600 VS = 5.0V VCM = 2.5V 400 INPUT BIAS CURRENT - nA
INPUT BIAS CURRENT - nA
VS = +5.0V 300 VS = 200 15V
400
200
VS = 15V VCM = 0V
100
0 -75
-50
-25
0 25 50 TEMPERATURE - C
75
100
125
0 -75
-50
-25
25 50 0 TEMPERATURE - C
75
100
125
Figure 14. OP113 Input Bias Current vs. Temperature
Figure 17. OP213 Input Bias Current vs. Temperature
5.0 VS = +5.0V POSITIVE OUTPUT SWING - Volts
2.0
15.0 VS = 14.5 POSITIVE OUTPUT SWING - Volts NEGATIVE OUTPUT SWING - mV 15V +SWING RL = 2k
4.5 +SWING RL = 2k -SWING RL = 2k
1.5
14.0 13.5 13.0 12.5 +SWING RL = 600
4.0
1.0
+SWING RL = 600
-13.5 -14.0 -14.5 -SWING RL = 600
3.5 -SWING RL = 600 3.0 -75 -50 -25 0 25 50 TEMPERATURE - C 75 100
0.5
-SWING RL = 2k
0 125
-15.0 -75
-50
-25
0 25 50 TEMPERATURE - C
75
100
125
Figure 15. Output Swing vs. Temperature and RL @ +5 V
Figure 18. Output Swing vs. Temperature and RL @ 15 V
60 40 CHANNEL SEPARATION - dB 20 0 -20 -40 -60 -80 -100 -120 10 100 1k 10k 100k FREQUENCY - Hz 1M 10M 105 OPEN-LOOP GAIN - V/ V VS = 15V TA = +25 C
20 18 16 14 12 10 8 6 4 2 0 -75 -50 -25 25 50 0 TEMPERATURE - C 75 100 125 RL = 600 RL = 2k VS = +5.0V VO = 3.9V
Figure 16. Channel Separation
Figure 19. Open-Loop Gain vs. Temperature @ +5 V
-10-
REV. C
OP113/OP213/OP413
12.5 RL = 2k 10.0 OPEN-LOOP GAIN - V/ V OPEN LOOP GAIN - V/ V VS = VD = 15V 10V 10 9 8 7 6 5 4 3 RL = 600 2 1 0 -75 -50 -25 0 25 50 TEMPERATURE - C 75 100 125 0 -75 -50 -25 25 50 0 TEMPERATURE - C 75 100 125 RL = 2k VS = VO = 15V 10V
7.5 RL = 1k 5.0 RL = 600 2.5
Figure 20. OP413 Open-Loop Gain vs. Temperature
Figure 23. OP213 Open-Loop Gain vs. Temperature
100 V+ = 5V V- = 0V TA = +25 C
100 TA= +25 C VS = 15V 0 OPEN-LOOP GAIN - dB 80 0
80 OPEN-LOOP GAIN - dB
PHASE - Degrees
GAIN 40 PHASE 20 m = 57
GAIN 40 PHASE 20 m = 72 135 90
90
135
0
180
0
180
-20 1k
225 10k 100k FREQUENCY - Hz 1M 10M
-20 1k 10k 100k FREQUENCY - Hz 1M 10M
225
Figure 21. Open-Loop Gain, Phase vs. Frequency @ +5 V
Figure 24. Open-Loop Gain, Phase vs. Frequency @ 15 V
50 V+ = 5V V- = 0V TA = +25 C CLOSED-LOOP GAIN - dB
50 TA= +25 C VS = 15V
40 AV = +100 CLOSED-LOOP GAIN - dB 30 20 AV = +10 10 0 AV = +1
40 AV = +100 30
20 AV = +10 10 0 AV = +1 -10 -20 1k
-10 -20 1k
10k
100k FREQUENCY - Hz
1M
10M
10k
100k FREQUENCY - Hz
1M
10M
Figure 22. Closed-Loop Gain vs. Frequency @ +5 V
Figure 25. Closed-Loop Gain vs. Frequency @ 15 V
REV. C
-11-
PHASE - Degrees
60
45
60
45
OP113/OP213/OP413
70 V+ = 5V V- = 0V PHASE MARGIN - Degrees 65 4 5 70 VS = GAIN-BANDWIDTH PRODUCT - MHz 15V GAIN-BANDWIDTH PRODUCT - MHz 5
PHASE MARGIN - Degrees
65
GBW
4
GBW 60 m 3
m 60 3
55
2
55
2
50 -75
-50
-25
0 25 50 TEMPERATURE - C
75
100
1 125
50 -75
-50
-25
0 25 50 TEMPERATURE - C
75
100
1 125
Figure 26. Gain Bandwidth Product and Phase Margin vs. Temperature @ +5 V
Figure 29. Gain Bandwidth Product and Phase Margin vs. Temperature @ 15 V
30 TA = +25 C VS = 15V 25
3.0 TA = +25 C VS = 15V 2.5
20
CURRENT NOISE DENSITY - pA/ Hz 1k
VOLTAGE NOISE DENSITY - nV/ Hz
2.0
15
1.5
10
1.0
5
0.5
0
1
10
100 FREQUENCY - Hz
0
1
10
100 FREQUENCY - Hz
1k
Figure 27. Voltage Noise Density vs. Frequency
Figure 30. Current Noise Density vs. Frequency
140 V+ = 5V V- = 0V TA = +25 C
140 TA= +25 C VS = 15V COMMON-MODE REJECTION - dB 1M 120 100
COMMON-MODE REJECTION - dB
120 100
80 60
80 60
40 20 0 100
40 20 0 100
1k
10k FREQUENCY - Hz
100k
1k
10k FREQUENCY - Hz
100k
1M
Figure 28. Common-Mode Rejection vs. Frequency @ +5 V
Figure 31. Common-Mode Rejection vs. Frequency @ 15 V
-12-
REV. C
OP113/OP213/OP413
140 TA = +25 C VS = 15V 30 +PSRR 80 60 -PSRR 40 20 0 100 0 100 IMPEDANCE - 40 TA = +25 C VS = 15V POWER SUPPLY REJECTION - dB 120 100
20
AV = +100 10 AV = +10 AV = +1
1k
10k FREQUENCY - Hz
100k
1M
1k
10k FREQUENCY - Hz
100k
1M
Figure 32. Power Supply Rejection vs. Frequency @ 15 V
Figure 35. Closed-Loop Output Impedance vs. Frequency @ 15 V
6 VS = +5V RL = 2k TA = +25 C AVCL = +1
30 VS = 15V RL = 2k TA = +25 C AVOL = +1
MAXIMUM OUTPUT SWING - Volts
4
MAXIMUM OUTPUT SWING - Volts 10M
5
25
20
3
15
2
10
1
5
0 1k
10k
100k FREQUENCY - Hz
1M
0 1k
10k
100k FREQUENCY - Hz
1M
10M
Figure 33. Maximum Output Swing vs. Frequency @ +5 V
Figure 36. Maximum Output Swing vs. Frequency @ 15 V
50 45 40 OVERSHOOT - % 35 30 25 20 15 10 5 0 0 100 200 300 LOAD CAPACITANCE - pF 400 500 POSITIVE EDGE NEGATIVE EDGE VS = +5V RL = 2k VIN = 100mV p-p TA = +25 C AVCL = +1
20 18 16 14 OVERSHOOT - % 12 10 8 6 4 2 0 0 100 200 300 LOAD CAPACITANCE - pF 400 500 NEGATIVE EDGE VS = 15V RL = 2k VIN = 100mV p-p TA = +25 C AVCL = +1
POSITIVE EDGE
Figure 34. Small Signal Overshoot vs. Load Capacitance @ +5 V
Figure 37. Small Signal Overshoot vs. Load Capacitance @ 15 V
REV. C
-13-
OP113/OP213/OP413
2.0 VS = +5, 0 +0.5V VOUT 1.5 SLEW RATE - V/ s SLEW RATE - V/ s +SLEW RATE +4.0V 1.5 -SLEW RATE 2.0 VS = 15V VOUT = 10V +SLEW RATE
1.0 -SLEW RATE
1.0
0.5
0.5
0 -75
-50
-25
0 25 50 TEMPERATURE - C
75
100
125
0 -75
-50
-25
0 25 50 TEMPERATURE - C
75
100
125
Figure 38. Slew Rate vs. Temperature @ +5 V (0.5 V V OUT +4.0 V)
Figure 41. Slew Rate vs. Temperature @ 15 V (-10 V V OUT +10.0 V)
1s
100 90 100 90
1s
10 10 0% 0%
20mV
20mV
Figure 39. Input Voltage Noise @ 15 V (20 nV/div)
Figure 42. Input Voltage Noise @ +5 V (20 nV/ div)
5 909 100 0.1 - 10Hz AV = 1000 SUPPLY CURRENT - mA 4 VS = 3 VS = +5.0V 2 18V VS = 15V
AV = 100
tOUT
Figure 40. Noise Test Diagram
1
0 -75
-50
-25
25 50 0 TEMPERATURE - C
75
100
125
Figure 43. Supply Current vs. Temperature
-14-
REV. C
OP113/OP213/OP413
+IN 9V 9V OUT -IN
Figure 44. OP213 Simplified Schematic
*OP113 Family SPICE Macro-Model * *Copyright 1992 by Analog Devices, Inc. * *Node Assignments * * Noninverting Input * * * Inverting Input Positive Supply Negative Supply
* Output * .SUBCKT OP113 Family 32 7 4 6 * * INPUT STAGE R3 4 19 1.5E3 R4 4 20 1.5E3 C1 19 20 5.31E-12 I1 7 18 106E-6 IOS 23 25E-09 EOS 12 5 POLY(1) 51 4 25E-06 1 Q1 19 3 18 PNP1 Q2 20 12 18 PNP1 CIN 32 3E-12 D1 31 DY D2 21 DY EN 52 22 0 1 GN1 02 25 0 1E-5 GN2 03 28 0 1E-5 * * VOLTAGE NOISE SOURCE WITH FLICKER NOISE DN1 21 22 DEN DN2 22 23 DEN VN1 21 0 DC 2 VN2 0 23 DC 2 * * CURRENT NOISE SOURCE WITH FLICKER NOISE DN3 24 25 DIN DN4 25 26 DIN VN3 24 0 DC 2 VN4 0 26 DC 2 *
* SECOND CURRENT NOISE SOURCE DN5 27 28 DIN DN6 28 29 DIN VN5 27 0 DC 2 VN6 0 29 DC 2 * * GAIN STAGE & DOMINANT POLE AT .2000E+01 HZ G2 34 36 19 20 2.65E-04 R7 34 36 39E+06 V3 35 4 DC 6 D4 36 35 DX VB2 34 4 1.6 * * SUPPLY/2 GENERATOR ISY 7 4 0.2E-3 R10 7 60 40E+3 R11 60 4 40E+3 C3 60 0 1E-9 * * CMRR STAGE & POLE AT 6 kHZ ECM 50 4 POLY(2) 3 60 2 60 0 1.6 0 1.6 CCM 50 51 26.5E-12 RCM1 50 51 1E6 RCM2 51 4 1 * * OUTPUT STAGE R12 37 36 1E3 R13 38 36 500 C4 37 6 20E-12 C5 38 39 20E-12 M1 39 36 4 4 MN L=9E-6 W=1000E-6 AD=15E-9 AS=15E-9 M2 45 36 4 4 MN L=9E-6 W=1000E-6 AD=15E-9 AS=15E-9 D5 39 47 DX D6 47 45 DX Q3 39 40 41 QPA 8 VB 7 40 DC 0.861 R14 7 41 375 Q4 41 7 43 QNA 1 R17 7 43 15 Q5 43 39 6 QNA 20 Q6 46 45 6 QPA 20 R18 46 4 15 Q7 36 46 4 QNA 1 M3 6 36 4 4 MN L = 9E-6 W=2000E-6 AD=30E-9 AS=30E-9 * * NONLINEAR MODELS USED * .MODEL DX D (IS=1E-15) .MODEL DY D (IS=1E-15 BV=7) .MODEL PNP1 PNP (BF=220) .MODEL DEN D(IS=1E-12 RS=1016 KF=3.278E-15 AF=1) .MODEL DIN D(IS=1E-12 RS=100019 KF=4.173E-15 AF=1) .MODEL QNA NPN(IS=1.19E-16 BF=253 VAF=193 VAR=15 RB=2.0E3 + IRB=7.73E-6 RBM=132.8 RE=4 RC=209 CJE=2.1E-13 VJE=0.573 + MJE=0.364 CJC=1.64E-13 VJC=0.534 MJC=0.5 CJS=1.37E-12 + VJS=0.59 MJS=0.5 TF=0.43E-9 PTF=30) .MODEL QPA PNP(IS=5.21E-17 BF=131 VAF=62 VAR= 15 RB=1.52E3 + IRB=1.67E-5 RBM=368.5 RE=6.31 RC=354.4 CJE=1.1E-13 + VJE=0.745 MJE=0.33 CJC=2.37E-13 VJC=0.762 MJC=0.4 + CJS=7.11E-13 VJS=0.45 MJS=0.412 TF=1.0E-9 PTF=30) .MODEL MN NMOS(LEVEL=3 VTO=1.3 RS=0.3 RD=0.3 TOX=8.5E-8 + LD=1.48E-6 WD=1E-6 NSUB=1.53E16 UO=650 DELTA=10 VMAX=2E5 + XJ=1.75E-6 KAPPA=0.8 ETA=0.066 THETA=0.01 TPG=1 CJ=2.9E-4 + PB=0.837 MJ=0.407 CJSW=0.5E-9 MJSW=0.33) * .ENDS OP113 Family
REV. C
-15-
OP113/OP213/OP413
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
8-Lead Plastic DIP (N-8)
0.430 (10.92) 0.348 (8.84)
8 5 14
14-Lead Plastic DIP (N-14)
0.795 (20.19) 0.725 (18.41)
8 7
1
4
0.280 (7.11) 0.240 (6.10) 0.060 (1.52) 0.015 (0.38) 0.325 (8.25) 0.300 (7.62) 0.195 (4.95) 0.115 (2.93) 0.210 (5.33) MAX
1
0.280 (7.11) 0.240 (6.10) 0.060 (1.52) 0.015 (0.38)
PIN 1
0.325 (8.25) 0.300 (7.62) 0.195 (4.95) 0.115 (2.93)
PIN 1 0.210 (5.33) MAX
0.130 (3.30) 0.160 (4.06) MIN 0.115 (2.93) 0.022 (0.558) 0.100 0.070 (1.77) SEATING PLANE 0.014 (0.356) (2.54) 0.045 (1.15) BSC
0.015 (0.381) 0.008 (0.204)
0.160 (4.06) 0.115 (2.92) 0.022 (0.558) 0.014 (0.36)
0.130 (3.30) MIN 0.100 0.070 (1.77) SEATING PLANE (2.54) 0.045 (1.15) BSC
0.015 (0.38) 0.008 (0.20)
8-Lead Narrow-Body Plastic DIP (SO-8)
16-Lead Wide Body SOIC (R-16)
0.4133 (10.50) 0.3977 (10.00)
0.1574 (4.00) 0.1497 (3.80)
8 1
5 4
0.2440 (6.20) 0.2284 (5.80)
1
8
PIN 1 0.0098 (0.25) 0.0040 (0.10)
0.0688 (1.75) 0.0532 (1.35)
0.0196 (0.50) x 45 0.0099 (0.25)
PIN 1 0.0118 (0.30) 0.0040 (0.10)
0.1043 (2.65) 0.0926 (2.35)
0.4193 (10.65) 0.3937 (10.00)
0.2992 (7.60) 0.2914 (7.40)
0.1968 (5.00) 0.1890 (4.80)
16
9
0.0291 (0.74) x 45 0.0098 (0.25)
0.0500 0.0192 (0.49) SEATING (1.27) 0.0098 (0.25) PLANE BSC 0.0138 (0.35) 0.0075 (0.19)
8 0 0.0500 (1.27) 0.0160 (0.41)
0.0500 (1.27) BSC
0.0192 (0.49) SEATING 0.0138 (0.35) PLANE
8 0.0125 (0.32) 0 0.0091 (0.23)
0.0500 (1.27) 0.0157 (0.40)
-16-
REV. C
PRINTED IN U.S.A.
C1805a-0-2/98

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