View SA58603_345589.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

INTEGRATED CIRCUITS
SA58603 High precision operational amplifier, comparator, and voltage reference
Product data Supersedes data of 2001 Oct 03 2002 Nov 13
Philips Semiconductors
Philips Semiconductors
Product data
High precision operational amplifier, comparator, and voltage reference
SA58603
GENERAL DESCRIPTION
The SA58603 is comprised of a low voltage, high precision dual operational amplifier, a comparator, and a reference voltage source. The input offset voltage is typically 100 V with a very low temperature drift of 1 V/C. The SA58603 supply current is typically 100 A per amplifier and it operates from 1.8 V to 6 V single supply. Having single power supply capability, low current consumption, low offset voltage, low input offset current and low input bias current, the SA58603 is ideal for battery-powered applications and amplification of very small signals. It is excellent for precision amplifiers in gas burners and gas pilot water heaters which use thermal couple heat sensors.
FEATURES General
Reference voltage section
* Functionality to 1.8 V typical * Low supply current: 100 A per amplifier (typical)
Amplifier section
* Reference voltage: 1.27 V 50 mV * Reference voltage temperature characteristics: * Output current: 0.3 mA (minimum)
APPLICATIONS
100 ppm/C (typical)
* Very low input offset voltage: 100 V (typical) * Very low input offset drift: 1 V/C (typical) * Low input offset current: 1 nA (typical) * Input bias current: 50 nA (typical) * Open loop gain: 100 dB (typical) * Common mode input includes ground
Comparator section
* Gas burners * Gas water heaters * Tankless gas water heaters
* Input offset voltage: 1.0 mV (typical) * Low input offset voltage voltage drift (-40 to +85 C): * Input bias current: 25 nA (typical) * Output sink current: 5 mA (minimum)
SIMPLIFIED DEVICE DIAGRAM
VCC 8 AMPLIFIER AOUT 3
10 V (typical)
AIN- AIN+
2 COMPARATOR 1 R 22 k 7 COMPOUT
1.27 V
4 GND
6 VS
5 COMPIN-
SL01536
Figure 1. Simplified device diagram. 2002 Nov 13 2
Philips Semiconductors
Product data
High precision operational amplifier, comparator, and voltage reference
SA58603
ORDERING INFORMATION
TYPE NUMBER SA58603D PACKAGE NAME SO8 DESCRIPTION plastic small outline package; 8 leads; body width 3.9 mm TEMPERATURE RANGE -40 to +85 C
PIN CONFIGURATION
TOP VIEW AIN+ AIN- AOUT GND 1 2 8 7 VCC COMPOUT VS COMIN-
SO8
3 4 6 5
SL01535
Figure 2. Pin configuration.
PIN DESCRIPTION
PIN 1 2 3 4 5 6 7 8 SYMBOL AIN+ AIN- AOUT GND COMPIN- VS COMPOUT VCC DESCRIPTION Non-inverting input of Op Amp. This is a PNP amplifier with the reference voltage as its supply voltage. Inverting input of Op Amp. This is a PNP amplifier with the reference voltage as its supply voltage. Output of Op Amp. This is a NPN emitter follower output with a 22 k internal on-chip pull-down resistor. Its supply voltage is VCC. Ground. Inverting input of Comparator. This is a PNP amplifier with VCC as its positive supply voltage. Reference voltage output. The output reference is typically 1.27 V. The output reference is derived from the series combination of a NPN transistor (configured as a diode with the base shorted to the collector) and a 120 k resistor. Output of Comparator. It is an open collector output stage which requires an external pull-up resistor. Positive supply. Its operating range is 1.8 to 6.0 V.
2002 Nov 13
3
Philips Semiconductors
Product data
High precision operational amplifier, comparator, and voltage reference
SA58603
EQUIVALENT CIRCUITS
PIN NUMBER 1 PIN NAME AIN+ INTERNAL EQUIVALENT CIRCUIT
VS
PIN NUMBER 5
PIN NAME COMPIN-
INTERNAL EQUIVALENT CIRCUIT
VS
R 25 k
R 43 k
R 18 k
R 39 k
2
AIN-
VS
6
VS
VCC
R 120 k R 25 k
R 18 k
3
AOUT
VCC
7
COMPOUT
VCC
R 22 k R 47 k
4
GND
8
VCC
MAXIMUM RATINGS
SYMBOL VCC VIN Tstg Tamb P Single supply voltage Input voltage Storage temperature Operating temperature Power dissipation PARAMETER MIN. -0.3 -0.3 -40 -40 - MAX. +10 +10 +125 +85 300 UNIT V V C C mW
2002 Nov 13
4
Philips Semiconductors
Product data
High precision operational amplifier, comparator, and voltage reference
SA58603
ELECTRICAL CHARACTERISTICS
VCC = 3.0 V, VIN = 0 V, and Tamb = 25 C, unless otherwise specified. SYMBOL ICC IOVS VS VS PSRR VCC PARAMETER Supply current Reference voltage output current Reference voltage Reference voltage temperature drift Power supply rejection ratio Power supply voltage operating range f = 100 Hz CONDITIONS MIN. - 0.3 1.22 - 50 1.8 TYP. 0.1 - 1.27 100 60 3.0 MAX. 0.15 - 1.32 - - 6.0 UNIT mA mA V ppm/C dB V
Amplifier section (note 1) VINA VIOA VIO/T IIOA Ii(bias)A Gv(ol)A IOA VOA Input voltage range Input offset voltage Input offset voltage temperature drift Input offset current Input bias current Open-loop voltage gain Output current Output voltage swing VIN = 10 mV; VO = 0.5 V VIN = -5 to +25 mV; RL = 10 k Tamb = -20 to +75 C -0.2 - - - - 80 0.5 0.01 - 0.1 1 1 50 100 - - 0.3 0.35 3 10 150 - - VCC - 1.0 3.5 30 75 - 0.2 400 V mV V/C nA nA dB mA V
Comparator section (note 2) VIOC VIOC/T Ii(bias)C IO(sink) ILO VSAT Input offset voltage Input offset voltage temperature drift Input bias current Output sink current Output leakage current Output saturation voltage VIN = -5 mV VIN = -5 mV VIN = -5 mV VIN = 10 mV; VO = 0.4 V VO = VCC + 1 V VIN = 10 mV; IO(sink) = 5 mA - - - 5 - - 1.0 10 25 - - 200 mV V/C nA mA A mV
NOTES: 1. Amplifier output is emitter follower with an on-chip 22 k pull-down resistor. 2. Comparator output is open collector; it requires an external pull-up resistor. See application section on how to determine this resistor.
2002 Nov 13
5
Philips Semiconductors
Product data
High precision operational amplifier, comparator, and voltage reference
SA58603
TYPICAL CHARACTERIZATION CURVES
Tamb = 25 C, VCC = 3 V, VIN = 0 V, unless otherwise specified.
160 REFERENCE VOLTAGE, VS (V) -25 0 25 50 75 100 1.280
SUPPLY CURRENT, ICC (mA)
140
1.276
120
1.272
100
1.268
80
1.264
60 -50
1.260 -50
-25
0
25
50
75
100
AMBIENT TEMPERATURE, Tamb (C)
AMBIENT TEMPERATURE, Tamb (C)
SL01915
SL01916
Figure 3. Supply current versus ambient temperature.
Figure 4. Reference voltage versus ambient temperature.
AMPLIFIER INPUT OFFSET VOLTAGE, VIOA (mV)
0.20 0.15 0.10 0.05 0 -0.05 -0.10 -0.15 -0.20 -50
AMPLIFIER INPUT OFFSET CURRENT, I IOA (nA) -25 0 25 50 75 100
1.8
1.6
1.4
1.2
1.0
0.8 -50
-25
0
25
50
75
100
AMBIENT TEMPERATURE, Tamb (C)
AMBIENT TEMPERATURE, Tamb (C)
SL01920
SL01917
Figure 5. Amplifier input offset voltage versus ambient temperature.
Figure 6. Amplifier input offset current versus ambient temperature.
AMPLIFIER INPUT BIAS CURRENT, I I(bias)A (nA)
54 AMPLIFIER OUTPUT CURRENT, IOA (mA)
3.0 VIN = 10 mV VOA = 0.5 V 2.5
53
52
2.0
51
1.5
50
1.0
49 -50
-25
0
25
50
75
100
0.5 -50
-25
0
25
50
75
100
AMBIENT TEMPERATURE, Tamb (C)
AMBIENT TEMPERATURE, Tamb (C)
SL01919
SL01918
Figure 7. Amplifier input bias current versus ambient temperature.
Figure 8. Amplifier output current versus ambient temperature.
2002 Nov 13
6
Philips Semiconductors
Product data
High precision operational amplifier, comparator, and voltage reference
SA58603
TYPICAL CHARACTERIZATION CURVES (continued)
Tamb = 25 C, VCC = 3 V, VIN = 0 V, unless otherwise specified.
AMPLIFIER OUTPUT VOLTAGE, LOW, VOAL (mV) VIN = -5 mV RL = 10 k 1.3 AMPLIFIER OUTPUT VOLTAGE, HIGH, VOAH (V) 1.5 2.40 VIN = -5 mV RL = 10 k 2.35
2.30
1.1
2.25
0.9
2.20
0.7 -50
-25
0
25
50
75
100
2.15 -50
-25
0
25
50
75
100
AMBIENT TEMPERATURE, Tamb (C)
AMBIENT TEMPERATURE, Tamb (C)
SL01921
SL01922
Figure 9. Amplifier output voltage, LOW versus ambient temperature.
COMPARATOR INPUT OFFSET VOLTAGE, VIOC (mV) 1.6 VIN = -5 mV 1.4 COMPARATOR INPUT BIAS CURRENT, II(bias)C (nA) 25.6
Figure 10. Amplifier output voltage, HIGH versus ambient temperature.
VIN = -5 mV 25.5 25.4 25.3 25.2 25.1 25.0 24.9 -50
1.2
1.0
0.8
0.6 -50
-25
0
25
50
75
100
-25
0
25
50
75
100
AMBIENT TEMPERATURE, Tamb (C)
AMBIENT TEMPERATURE, Tamb (C)
SL01923
SL01924
Figure 11. Comparator input offset voltage versus ambient temperature.
35 COMPARATOR OUTPUT SINK CURRENT, VIN = 10 mV VOC = 0.4 V 30 COMPARATOR OUTPUT SATURATION VOLTAGE, 250
Figure 12. Comparator bias current versus ambient temperature.
VIN = 10 mV IO(sink)C = 5 mA 230
I O(sink)C (mA)
25
210 VSAT (mV)
20
190
15
170
10 -50
-25
0
25
50
75
100
150 -50
-25
0
25
50
75
100
AMBIENT TEMPERATURE, Tamb (C)
AMBIENT TEMPERATURE, Tamb (C)
SL01925
SL01926
Figure 13. Comparator output sink current versus ambient temperature.
Figure 14. Comparator output saturation voltage versus ambient temperature.
2002 Nov 13
7
Philips Semiconductors
Product data
High precision operational amplifier, comparator, and voltage reference
SA58603
TYPICAL CHARACTERIZATION CURVES (continued)
Tamb = 25 C, VCC = 3 V, VIN = 0 V, unless otherwise specified.
130 1.275
SUPPLY CURRENT, ICC (mA)
120
REFERENCE VOLTAGE, VS (V) 4 6 SUPPLY VOLTAGE, VCC (V) 8 10
1.273
110
1.271
100
1.269
90
1.267
80 2
1.265 2 4 6 SUPPLY VOLTAGE, VCC (V) 8 10
SL01927
SL01928
Figure 15. Supply current versus supply voltage.
Figure 16. Reference voltage versus supply voltage.
AMPLIFIER INPUT OFFSET VOLTAGE, VIOA (nV)
130
AMPLIFIER INPUT OFFSET CURRENT, I IOA (nV) 2
140
1.4
1.2
120
1.0
110
0.8
100
0.6
90 4 6 SUPPLY VOLTAGE, VCC (V) 8 10
0.4 2 4 6 SUPPLY VOLTAGE, VCC (V) 8 10
SL01929
SL01930
Figure 17. Amplifier input offset voltage versus supply voltage.
Figure 18. Amplifier input offset current versus supply voltage.
AMPLIFIER INPUT BIAS CURRENT, I I(bias)A (nV)
51.0 AMPLIFIER OUTPUT CURRENT, IOA (mA)
3.5 VIN = 10 mV VOA = 0.5 V 3.1
50.6
50.2
2.7
49.8
2.3
49.4
1.9
49.0 2 4 6 SUPPLY VOLTAGE, VCC (V) 8 10
1.5 2 4 6 SUPPLY VOLTAGE, VCC (V) 8 10
SL01931
SL01932
Figure 19. Amplifier input bias current versus supply voltage.
Figure 20. Amplifier output current versus supply voltage.
2002 Nov 13
8
Philips Semiconductors
Product data
High precision operational amplifier, comparator, and voltage reference
SA58603
TYPICAL CHARACTERIZATION CURVES (continued)
Tamb = 25 C, VCC = 3 V, VIN = 0 V, unless otherwise specified.
AMPLIFIER OUTPUT VOLTAGE, LOW, VOAL (mV) AMPLIFIER OUTPUT VOLTAGE, HIGH, VOAH (V) 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 2 4 6 SUPPLY VOLTAGE, VCC (V) 8 10 VIN = -5 mV RL = 10 k 10 VIN = 25 mV RL = 10 k 8
6
4
2
0 2 4 6 SUPPLY VOLTAGE, VCC (V) 8 10
SL01934
SL01933
Figure 21. Amplifier output voltage, LOW versus supply voltage.
Figure 22. Amplifier output voltage, HIGH versus supply voltage.
COMPARATOR INPUT OFFSET VOLTAGE, VIOC (mV)
1.10 COMPARATOR INPUT BIAS CURRENT, I I(bias)A (nA) VIN = -5 mV 1.08
30
VIN = -5 mV
29
1.06
28
1.04
27
1.02
26
1.00
25
0.98 2 4 6 SUPPLY VOLTAGE, VCC (V) 8 10
24 2 4 6 SUPPLY VOLTAGE, VCC (V) 8 10
SL01935
SL01937
Figure 23. Comparator input offset voltage versus supply voltage.
Figure 24. Comparator bias current versus supply voltage.
21.4 COMPARATOR OUTPUT SINK CURRENT, I O(sink)C (mA)
COMPARATOR OUTPUT SATURATION VOLTAGE, VSAT (mV)
VIN = 10 mV VOC = 0.4 V
210
VIN = 10 mV IO(sink)C = 5 mA
20.9
205
20.4
200
19.9
195
19.4
190
18.9
185
18.4 2 4 6 SUPPLY VOLTAGE, VCC (V) 8 10
180 2 4 6 SUPPLY VOLTAGE, VCC (V) 8 10
SL01936
SL01938
Figure 25. Comparator output sink current versus supply voltage.
Figure 26. Comparator output saturation voltage versus supply voltage.
2002 Nov 13
9
Philips Semiconductors
Product data
High precision operational amplifier, comparator, and voltage reference
SA58603
TYPICAL CHARACTERIZATION CURVES (continued)
Tamb = 25 C, VCC = 3 V, VIN = 0 V, unless otherwise specified.
POWER SUPPLY REJECTION RATIO, PSSR (dB) 0 OPEN LOOP VOLTAGE GAIN, GV(ol)A (dB) -10 -20 -30 -40 -50 -60 -70 0.1 1 FREQUENCY, f (kHz) 10 100 100 90 80 70 60 50 40 30 20 10 0 0.01 0.1 1 10 100 1000 10000
FREQUENCY, f (kHz)
SL01939
SL01940
Figure 27. Power supply rejection ratio versus frequency.
Figure 28. Amplifier open loop gain versus frequency.
COMPARATOR OUTPUT SATURATION VOLTAGE, VSAT (mV)
1.34
600 VIN = 10 mV 500
REFERENCE VOLTAGE, VS (V)
1.29
400
1.24
300
1.19
200
1.14
100
1.09 0 1 2 3 4 5 OUTPUT CURRENT, IOA (mA)
0 0 5 10 15 20 25 OUTPUT SINK CURRENT, IO(sink)C (mA)
SL01941
SL01942
Figure 29. Reference voltage versus output current.
Figure 30. Comparator output saturation voltage versus sink current.
2002 Nov 13
10
Philips Semiconductors
Product data
High precision operational amplifier, comparator, and voltage reference
SA58603
APPLICATION INFORMATION Typical gas pilot detection circuit
Figure 31 shows a typical application of the SA58603 in which the input amplifier is driven by a thermocouple heated by the pilot flame in a water heater or gas burner. The circuit comparator may be programmed to detect when the pilot is out. The IC is operated from a single voltage supply making it capable of battery backup with loss of AC power. It may be operated from a one-cell Lithium battery or two alkaline cells. 10 nF bypass capacitors are placed from VCC and reference voltage output (pin 6) to ground to filter power supply noise and interference from external noise sources. Comparator output pull-up resistor The comparator output pull-up resistor is determined by the following formula: R+ V CC * V SAT(max) I O(sink)(min)
where VSAT(max) = 400 mV, and IO(sink)(min) = 5 mA. Comparator threshold voltage The comparator threshold voltage is determined by R4 and R5. They form a voltage divider from the reference voltage output (VS, Pin 6) to ground. In the application example, VCOMP, the comparator input (COMPIN-, Pin 5) is connected to the junction of R4 and R5. The input level is calculated by following relationship: V COMP + 1.27V R5 (R4 ) R5)
Selecting external components
Gain Recommended amplifier gain is 40 dB. The gain is is set by the combination of R1, R2, and R3 as shown in the following equations: (R3 ) R2) Av + ; Av (dB) = 20 log (Av); R3 = R1 k R2 R3 For a gain of 40 dB, Av = 100 V/V; if R2 = 1 k, then 99*R3 = 1 k; R3 = 10.1 . R3 + R1 R2 ; R3 x R1 + R3 x R2 = R1 x R2: (R1 ) R2) R3 x R2 = R1 (R2 - R3) Thus R1 + R3 R2 + 10.2W (R2 * R3)
AMPLIFIER OUTPUT ADC TO INPUT
VCC 8
3 R2 R1 THERMOCOUPLE 2 COMPARATOR 1 R3 R 22 k 1.27 V 7 COMPARATOR RESISTANCE AMPLIFIER PULL-UP RESISTANCE
4 R5
VCOMP R4
6
5 TO ADC AVREF
GND
TO ADC AVSS
SL01537
Figure 31. Typical flame detection circuit.
2002 Nov 13
11
Philips Semiconductors
Product data
High precision operational amplifier, comparator, and voltage reference
SA58603
PACKING METHOD
GUARD BAND TAPE REEL ASSEMBLY
TAPE DETAIL
COVER TAPE
CARRIER TAPE
BARCODE LABEL
BOX
SL01305
Figure 32. Tape and reel packing method.
2002 Nov 13
12
Philips Semiconductors
Product data
High precision operational amplifier, comparator, and voltage reference
SA58603
SO8: plastic small outline package; 8 leads; body width 3.9 mm
pin 1 index
B2 1.73 0.068
4.95 4.80 0.189 0.195 0.51 0.33 0.013 0.020 4.95 4.80 1.27 0.38 0.050 0.015
0.076 0.003
SO8
2002 Nov 13
13
Philips Semiconductors
Product data
High precision operational amplifier, comparator, and voltage reference
SA58603
REVISION HISTORY
Rev _2 Date 20021113 Description Product data; second version (9397 750 10671). Supersedes SA58603_1 of 2001 Oct 03 (9397 750 08955). Engineering Change Notice 853-2289 29151 (date: 20021105). Modifications:
* Add "Typical characterization curves" section.
_1 20011003 Product data; initial version (9397 750 08955). Engineering Change Notice 853-2289 27197 (date: 20011003).
2002 Nov 13
14
Philips Semiconductors
Product data
High precision operational amplifier, comparator, and voltage reference
SA58603
Data sheet status
Level
I
Data sheet status [1]
Objective data
Product status [2] [3]
Development
Definitions
This data sheet contains data from the objective specification for product development. Philips Semiconductors reserves the right to change the specification in any manner without notice. This data sheet contains data from the preliminary specification. Supplementary data will be published at a later date. Philips Semiconductors reserves the right to change the specification without notice, in order to improve the design and supply the best possible product. This data sheet contains data from the product specification. Philips Semiconductors reserves the right to make changes at any time in order to improve the design, manufacturing and supply. Relevant changes will be communicated via a Customer Product/Process Change Notification (CPCN).
II
Preliminary data
Qualification
III
Product data
Production
[1] Please consult the most recently issued data sheet before initiating or completing a design. [2] The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com. [3] For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.
Definitions
Short-form specification -- The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. Limiting values definition -- Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information -- Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification.
Disclaimers
Life support -- These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. Right to make changes -- Philips Semiconductors reserves the right to make changes in the products--including circuits, standard cells, and/or software--described or contained herein in order to improve design and/or performance. When the product is in full production (status `Production'), relevant changes will be communicated via a Customer Product/Process Change Notification (CPCN). Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified.
Contact information
For additional information please visit http://www.semiconductors.philips.com. Fax: +31 40 27 24825
(c) Koninklijke Philips Electronics N.V. 2002 All rights reserved. Printed in U.S.A. Date of release: 11-02
For sales offices addresses send e-mail to: sales.addresses@www.semiconductors.philips.com.
Document order number:
9397 750 10671
Philips Semiconductors
2002 Nov 13 15

▲Up To Search▲

Price & Availability of SA58603

	To Download SA58603 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .