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| FAN4174/FAN4274 Single and Dual Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifiers April 2005 FAN4174/FAN4274 Single and Dual Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifiers Features 200A supply current per amplifier 3.7MHz bandwidth Output swing to within 10mV of either rail Input voltage range exceeds the rails 3V/s slew rate 25nV/Hz input voltage noise Replaces KM4170 and KM4270 Description The FAN4174 (single) and FAN4274 (dual) are ultra-low cost, voltage feedback amplifiers with CMOS inputs that consume only 200A of supply current per amplifier while providing 33mA of output short circuit current. These amplifiers are designed to operate from 2.5V to 5V supplies. The common mode voltage range extends beyond the negative and positive rails. The FAN4174 and FAN4274 are designed on a CMOS process and provide 3.7MHz of bandwidth and 3V/s of slew rate at a supply voltage of 5V. The combination of low power, rail-to-rail performance, low voltage operation, and tiny package options make this amplifier family well suited for use in many general purpose and battery powered applications. FAN4174 competes with OPA340 and TLV2461; available in lead (Pb) free SC70-5 and SOT23-5 packages FAN4274 competes with OPA2340 and TLV2462; available in lead (Pb) free MSOP-8 package Fully specified at +2.7V and +5V supplies Applications Portable/battery-powered applications PCMCIA, USB Mobile communications, cellular phones, pagers Notebooks and PDA's Sensor interface A/D buffer Active filters Signal conditioning . 8 7 6 5 4 3 2 1 0 -1 -2 -3 0.1 Vo = 50mV CL = 500pF Rs = 165 CL = 2000pF Rs = 65 CL = 50pF Rs = 0 Gain (dB) CL = 1000pF Rs = 100 CL = 100pF Rs = 0 Rs + 5k 5k CL RL Portable test instruments Typical Application Diagram +Vs 6.8F + 1.0 10 Frequency (MHz) +In + Rg 0.01F Out Rf 6.8F + FAN4174 0.01F -Vs FAN4174/FAN4274 Rev. 2D 1 www.fairchildsemi.com (c)2005 Fairchild Semiconductor Corporation FAN4174/FAN4274 Single and Dual Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifiers FAN4174 Pin Configurations SOT23 FAN4174 Pin Assignments Pin# 1 Pin OUT -Vs +IN -IN +Vs Output Description Negative Supply Positive Supply Negative Input Positive Supply OUT -Vs +IN 1 2 + 5 +Vs 2 3 4 - 5 3 4 -IN SC70 OUT -Vs +IN 1 2 + 5 +Vs - 3 4 -IN FAN4274 Pin Configuration MSOP-8 FAN4274 Pin Assignments Pin# 1 Pin OUT1 -IN1 +IN1 -Vs +IN2 -IN2 OUT2 +Vs Description Output, Channel 1 Negative Input, Channel 1 Positive Input, Channel 1 Negative Supply Positive Input, Channel 2 Negative Input, Channel 2 Output, Channel 2 Positive Supply OUT1 -IN1 +IN1 -Vs 1 2 3 4 + 8 7 + +Vs OUT2 -IN2 +IN2 2 3 4 5 6 7 8 6 5 www.fairchildsemi.com 2 FAN4174/FAN4274 Rev. 2D FAN4174/FAN4274 Single and Dual Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifiers Reliability Information Parameter Junction Temperature Storage Temperature Range Lead Temperature (Soldering, 10s) Thermal Resistance (JA), 5 Lead SOT231 Thermal Resistance (JA), 5 Lead SC701 Thermal Resistance (JA), 8 Lead MSOP1 256 331 206 -65 Min. Typ. Max. 150 +150 +300 Unit C C C C/W C/W C/W Note: 1. Package thermal resistance (JA), JEDEC standard, multi-layer test boards, still air. Absolute Maximum Ratings Parameter Supply Voltage Input Voltage Range Min. 0 -Vs -0.5 Max. 6 +Vs +0.5 Unit V V Note: Functional operation under any of these conditions is NOT implied. Performance and reliability are guaranteed only if operating conditions are not exceeded. Recommended Operating Conditions Parameter Operating Temperature Range Min. -40 Typ. Max. +85 Unit C FAN4174/FAN4274 Rev. 2D 3 www.fairchildsemi.com FAN4174/FAN4274 Single and Dual Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifiers Electrical Specifications at +2.7V (VS = +2.7V, G = 2, RL = 10k to VS/2, RF = 5k; unless otherwise noted) Symbol Parameter Frequency Domain Response UGBW BWSS GBWP -3dB Bandwidth -3dB Bandwidth Gain Bandwidth product Time Domain Response tR , t F OS SR Rise and Fall Time Overshoot Slew Rate Distortion and Noise Response HD2 HD3 THD en XTALK VIO dVIO Ibn PSRR AOL IS RIN CIN CMIR 2nd Harmonic Distortion 3rd Harmonic Distortion Total Harmonic Distortion Input Voltage Noise Crosstalk (FAN4274) DC Performance Input Offset Voltage1 Average Drift Input Bias Current Power Supply Rejection Open Loop Gain Supply Current Per Amplifier1 Input Characteristics Input Resistance Input Capacitance Input Common Mode Voltage Range typical (FAN4174) typical (FAN4274) CMRR Common Mode Rejection Ratio1 DC, VCM = 0V to 2.2V for FAN4174 DC, VCM = 0V to 2.7V for FAN4274 Output Characteristics VO Output Voltage Swing1 RL = 10k to VS/2 RL = 1k to VS/2 ISC VS Short Circuit Output Current Power Supply Operating Range 0.03 0.01 to 2.69 0.05 to 2.55 +34/-12 Conditions G = +1 Min Typ Max Units 4 2.5 4 MHz MHz MHz Vo = 1.0V step Vo = 1.0V step Vo = 3V step, G = -1 Vo =1Vpp, 10kHz Vo =1Vpp, 10kHz Vo =1Vpp, 10kHz 100kHz 300 5 3 ns % V/s dBc dBc % -66 -67 0.1 26 -100 nV/Hz dB -6 0 2.1 5 +6 mV V/C pA dB dB A G pF V V dB dB Ratio1 DC DC 50 73 98 200 300 10 1.4 -0.3 to 2.6 -0.3 to 3.0 50 50 65 65 2.65 V V mA V 2.5 to 5.5 Notes: 1. 100% tested at 25C. www.fairchildsemi.com 4 FAN4174/FAN4274 Rev. 2D FAN4174/FAN4274 Single and Dual Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifiers Electrical Specifications at +5V (VS = +5V, G = 2, RL = 10k to VS/2, RF = 5k; unless otherwise noted) Symbol Parameter Frequency Domain Response UGBW BWSS GBWP -3dB Bandwidth -3dB Bandwidth Gain Bandwidth product Time Domain Response tR , t F OS SR Rise and Fall Time Overshoot Slew Rate Distortion and Noise Response HD2 HD3 THD en XTALK VIO dVIO Ibn PSRR AOL IS RIN CIN CMIR CMRR 2nd Harmonic Distortion 3rd Harmonic Distortion Total Harmonic Distortion Input Voltage Noise Crosstalk (FAN4274) DC Performance Input Offset Voltage1 Average Drift Input Bias Current Power Supply Rejection Open Loop Gain Supply Current Per Amplifier1 Input Characteristics Input Resistance Input Capacitance Input Common Mode Voltage Range Common Mode Rejection Ratio1 Output Characteristics VO Output Voltage Swing1 RL = 10k to VS/2 RL = 1k to VS/2 ISC VS Short Circuit Output Current Power Supply Operating Range 0.03 0.01 to 4.99 0.1 to 4.9 33 2.5 to 5.5 4.95 V V mA V typical DC, VCM = 0V to VS 58 10 1.2 -0.3 to 5.3 73 G pF V dB Ratio1 DC DC 50 -8 0 2.9 5 73 102 200 300 +8 mV V/C pA dB dB A 100kHz Vo =1Vpp, 10kHz Vo =1Vpp, 10kHz Vo =1Vpp, 10kHz -80 -80 0.02 25 -100 dBc dBc % Vo = 1.0V step Vo = 1.0V step Vo = 3V step, G = -1 300 5 3 ns % V/s G = +1 3.7 2.3 3.7 MHz MHz MHz Conditions Min Typ Max Units nV/Hz dB Notes: 1. 100% tested at 25C. FAN4174/FAN4274 Rev. 2D 5 www.fairchildsemi.com FAN4174/FAN4274 Single and Dual Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifiers Typical Performance Characteristics (VS = +2.7, G = 2, RL = 10k to VS/2, RF = 5k; unless otherwise noted) Figure 1. Non-Inverting Freq. Response (+5V) 1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 0.1 Figure 2. Inverting Freq. Response (+5V) 1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 0.1 Normalized Gain (dB) Normalized Gain (dB) G=1 Rf = 0 G=2 G = -1 G = -2 G = 10 G = -10 G=5 G = -5 Vo = 0.2Vpp Vo = 0.2Vpp 1.0 10 1.0 10 Frequency (MHz) Frequency (MHz) Figure 3. Non-Inverting Freq. Response 1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 0.1 Figure 4. Inverting Freq. Response 1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 0.1 Normalized Gain (dB) Normalized Gain (dB) G=1 Rf = 0 G=2 G = -1 G = -2 G = 10 G = -10 G=5 G = -5 Vo = 0.2Vpp Vo = 0.2Vpp 1.0 10 1.0 10 Frequency (MHz) Frequency (MHz) Figure 5. Frequency Response vs. CL 8 7 6 5 4 3 2 1 0 -1 -2 -3 0.1 Figure 6. Frequency Response vs. RL 8 7 6 5 4 3 2 1 0 -1 -2 -3 0.1 Vo = 50mV CL = 500pF Rs = 165 CL = 2000pF Rs = 65 CL = 50pF Rs = 0 Gain (dB) Gain (dB) CL = 1000pF Rs = 100 CL = 100pF Rs = 0 Rs RL = 10k RL = 1k RL = 200 RL = 50 Vo = 0.2Vpp + 5k 5k CL RL 1.0 10 1.0 10 Frequency (MHz) Frequency (MHz) www.fairchildsemi.com 6 FAN4174/FAN4274 Rev. 2D FAN4174/FAN4274 Single and Dual Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifiers Typical Performance Characteristics (VS = +2.7V, G = 2, RL = 10k to VS/2, RF = 5k; unless otherwise noted) Figure 7. Large Signal Freq. Response (+5V) 7 6 5 4 3 2 1 0 -1 -2 -3 -4 0.1 1.0 10 Vo = 4Vpp Vo = 1Vpp Vo = 2Vpp Figure 8. Open Loop Gain and Phase vs. Freq. 120 100 Gain Open Loop Phase (Degree) Open Loop Gain (dB) 80 60 40 20 0 -20 -40 1 10 100 1k 10k 100k 1M 10M Phase Gain (dB) 0 -45 -90 -135 -180 Frequency (MHz) Frequency (Hz) Figure 9. 2nd & 3rd Harmonic Distortion -46 -48 -50 -52 -54 -56 -58 -60 -62 -64 -66 -68 -70 10 Figure 10. 2nd Harmonic Distortion vs. Vo -40 3rd; RL = 10k -45 100kHz 50kHz Distortion (dBc) 2nd; RL = 200k 3rd; RL = 1k 3rd; RL = 200k 2nd; RL = 10k 2nd; RL = 1k Distortion (dBc) -50 -55 -60 -65 -70 -75 -80 -85 20kHz 10kHz 20 30 40 50 60 70 80 90 100 0.5 0.75 1 1.25 1.5 1.75 2 2.25 2.5 Frequency (kHz) Output Amplitude (Vpp) Figure 11. 3rd Harmonic Distortion vs. Vo -40 -45 100kHz Figure 12. CMRR Vs = 5V 80 70 Distortion (dBc) -50 -55 -60 -65 -70 -75 -80 -85 0.5 0.75 1 1.25 1.5 1.75 2 CMRR (dB) 2.5 50kHz 20kHz 60 50 40 30 10kHz 2.25 10 100 1k 10k 100k Output Amplitude (Vpp) Frequency (Hz) FAN4174/FAN4274 Rev. 2D 7 www.fairchildsemi.com FAN4174/FAN4274 Single and Dual Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifiers Typical Performance Characteristics (VS = +2.7V, G = 2, RL = 10k to VS/2, RF = 5k; unless otherwise noted) Figure 13. PSRR Vs = 5V 80 70 1.35 Figure 14. Output Swing vs. Load Output Voltage (0.15V/div) 1.05 0.75 0.45 0.15 -0.15 -0.45 -0.75 -1.5 -1.35 -2 -1.5 -1 -0.5 RL = 75 RL = 100 RL = 1k RL = 10k RL = 200 PSRR (dB) 60 50 40 30 10 100 1k 10k 100k 0 0.5 1 1.5 2 Frequency (Hz) Input Voltage (0.5V/div) Figure 15. Pulse Resp. vs. Common Mode Voltage 1.5 75 70 65 60 55 50 45 40 35 30 25 20 15 Figure 16. Input Voltage Noise Output Voltage (0.25V/div) 1.2V offset 0.6V offset no offset -0.6V offset -1.2V offset 1 0.5 0 -0.5 -1 -1.5 Time (0.5s/div) Input Voltage Noise (nV/Hz) G=1 0.1k 1k 10k 100k 1M Frequency (Hz) www.fairchildsemi.com 8 FAN4174/FAN4274 Rev. 2D FAN4174/FAN4274 Single and Dual Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifiers Application Information General Description The FAN4174 amplifier family are single supply, general purpose, voltage-feedback amplifiers. Fabricated on a bi-CMOS process. The family features a rail-to-rail input and output and is unity gain stable. The typical non-inverting circuit schematic is shown in Figure 1. Overdrive Recovery Overdrive of an amplifier occurs when the output and/or input ranges are exceeded. The recovery time varies based on whether the input or output is overdriven and by how much the ranges are exceeded. The FAN4174 will typically recover in less than 500ns from an overdrive condition. Figure 3 shows the FAN4174 amplifier in an overdriven condition. +Vs 6.8F + 3.0 2.5 2.0 G=5 VS = 2.7V Output In + Rg 0.01F Out Rout Rf Voltage (V) 1.5 1.0 0.5 0 -0.5 0.1 Input FAN4174 Time (1s/div) Figure 1. Typical Non-inverting Configuration Figure 3. Overdrive Recovery Input Common Mode Voltage The common mode input range extends to 300mV below ground and to 100mV above Vs, in single supply operation. Exceeding these values will not cause phase reversal. However, if the input voltage exceeds the rails by more than 0.5V, the input ESD devices will begin to conduct. The output will stay at the rail during this overdrive condition. If the absolute maximum input voltage (700mV beyond either rail) is exceeded, externally limit the input current to 5mA as shown in Figure 2. Driving Capacitive Loads The Frequency Response vs. CL plot, illustrates the response of the FAN4174 amplifier family. A small series resistance (Rs) at the output of the amplifier, illustrated in Figure 4, will improve stability and settling performance. Rs values in the Frequency Response vs. CL plot were chosen to achieve maximum bandwidth with less than 2dB of peaking. For maximum flatness, use a larger Rs. Capacitive loads larger than 500pF require the use of Rs. + Vin 10k Rs Rf CL RL Vo Rg - + Figure 2. Circuit for Input Current Protection Figure 4. Typical Topology for driving a capacitive load Driving a capacitive load introduces phase-lag into the output signal, which reduces phase margin in the amplifier. The unity gain follower is the most sensitive configuration. In a unity gain follower configuration, the FAN4174 amplifier family requires a 300 series resistor to drive a 100pF load. Power Dissipation The maximum internal power dissipation allowed is directly related to the maximum junction temperature. If the maximum junction temperature exceeds 150C, some performance degradation will occur. If the maximum junction temperature exceeds 150C for an extended time, device failure may occur. FAN4174/FAN4274 Rev. 2D 9 www.fairchildsemi.com FAN4174/FAN4274 Single and Dual Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifiers Layout Considerations General layout and supply bypassing play major roles in high frequency performance. Fairchild has evaluation boards to use as a guide for high frequency layout and as an aid in device testing and characterization. Follow the steps below as a basis for high frequency layout: * Include 6.8F and 0.01F ceramic capacitors * Place the 6.8F capacitor within 0.75 inches of the power pin * Place the 0.01F capacitor within 0.1 inches of the power pin * Remove the ground plane under and around the part, especially near the input and output pins to reduce parasitic capacitance * Minimize all trace lengths to reduce series inductances Refer to the evaluation board layouts shown in Figure 6 for more information. When evaluating only one channel, complete the following on the unused channel: 1. Ground the non-inverting input 2. Short the output to the inverting input Evaluation Board Information The following evaluation boards are available to aid in the testing and layout of this device: Figure 5a. FAN4174 Evaluation Board Schematic (KEB002/KEB011) Eval Bd Description Products KEB002 Single Channel, Dual Supply, FAN4174IS5X 5 and 6 lead SOT23 KEB010 Dual Channel, Dual Supply 8 lead MSOP FAN4274IMU8X KEB011 Single Channel, Dual Supply, FAN4174IP5X 5 and 6 lead SC70 Evaluation board schematics are shown in Figures 5a and 5b, layouts are shown in Figure 6a through 6d. Figure 5b. FAN4274 Evaluation Board Schematic (KEB010) FAN4174/FAN4274 Rev. 2D 10 www.fairchildsemi.com FAN4174/FAN4274 Single and Dual Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifiers Evaluation Board Layout Figure 6a: KEB002 (top side) Figure 6b: KEB002 (bottom side) Figure 6c: KEB010 (top side) Figure 6d: KEB010 (bottom side) FAN4174/FAN4274 Rev. 2D 11 www.fairchildsemi.com FAN4174/FAN4274 Single and Dual Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifiers Mechanical Dimensions C L DATUM 'A' SOT-23 b e 2 SYMBOL A A1 A2 b C D E E1 L e e1 MIN 0.90 0.00 0.90 0.25 0.09 2.80 2.60 1.50 0.35 MAX 1.45 0.15 1.30 0.50 0.20 3.10 3.00 1.75 0.55 0.95 ref 1.90 ref 0 10 C L E C L E1 e1 D C L C NOTE: 1. All dimensions are in millimeters. 2 Foot length measured reference to flat foot surface parallel to DATUM 'A' and lead surface. 3. Package outline exclusive of mold flash & metal burr. 4. Package outline inclusive of solder plating. 5. Comply to EIAJ SC74A. 6. Package ST 0003 REV A supercedes SOT-D-2005 REV C. A A2 A1 SC70 b C L e L C L HE C L E Q1 SYMBOL e D b E HE Q1 A2 A1 A c L MIN MAX 0.65 BSC 1.80 2.20 0.15 0.30 1.15 1.35 1.80 2.40 0.10 0.40 0.80 1.00 0.00 0.10 0.80 1.10 0.10 0.18 1.10 0.30 D C L C NOTE: 1. 2. 3. 4. All dimensions are in millimeters. Dimensions are inclusive of plating. Dimensions are exclusive of mold flashing and metal burr. All speccifications comply to EIAJ SC70. A A2 A1 MSOP E/2 2X e S 02 MSOP-8 t1 R1 t2 -H- R E1 3 7 Gauge Plane 0.25mm -B- 2 03 b L1 c1 b1 Section A - A 5 L 01 E3 E4 1 2 2 4 6 ccc A B C c D2 A2 -C- Detail A Scale 40:1 Detail A E2 A b aaa A bbb M A B C -A- A A E1 E A1 D 3 4 NOTE: 1 All dimensions are in millimeters (angle in degrees), unless otherwise specified. 2 3 4 5 6 7 SYMBOL MIN A 1.10 A1 0.10 A2 0.86 D 3.00 D2 2.95 E 4.90 E1 3.00 E2 2.95 E3 0.51 E4 0.51 R 0.15 R1 0.15 t1 0.31 t2 0.41 b 0.33 b1 0.30 c 0.18 c1 0.15 01 3.0 02 12.0 03 12.0 L 0.55 L1 0.95 BSC aaa 0.10 bbb 0.08 ccc 0.25 e 0.65 BSC S 0.525 BSC MAX - 0.05 0.08 0.10 0.10 0.15 0.10 0.10 0.13 0.13 +0.15/-0.06 +0.15/-0.06 0.08 0.08 +0.07/-0.08 0.05 0.05 +0.03/-0.02 3.0 3.0 3.0 0.15 - - - - - - Datums - B - and - C - to be determined at datum plane - H - . Dimensions "D" and "E1" are to be determined at datum - H - . Dimensions "D2" and "E2" are for top package and dimensions "D" and "E1" are for bottom package. Cross sections A - A to be determined at 0.13 to 0.25mm from the leadtip. Dimension "D" and "D2" does not include mold flash, protrusion or gate burrs. Dimension "E1" and "E2" does not include interlead flash or protrusion. www.fairchildsemi.com 12 FAN4174/FAN4274 Rev. 2D FAN4174/FAN4274 Single and Dual Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifiers Ordering Information Model FAN4174 FAN4174 FAN4274 Part Number FAN4174IS5X_NL FAN4174IP5X_NL FAN4274IMU8X Lead Free Yes Yes Yes Package SOT23-5 SC70-5 MSOP-8 Container Reel Reel Reel Pack Qty. 3000 3000 3000 Temperature Range: -40C to +85C FAN4174/FAN4274 Rev. 2D 13 www.fairchildsemi.com FAN4174/FAN4274 Single and Dual Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifiers FAN4174/FAN4274 Rev. 2D 14 www.fairchildsemi.com |
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