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| LTC2054/LTC2054HV Low Power Zero-Drift Operational Amplifiers in SOT-23 FEATURES s s s s s s s s s DESCRIPTIO s s s Supply Current 175A (Max), Guaranteed Over Temperature Offset Voltage 3V (Max) Offset Voltage Drift 30nV/C (Max) Noise: 1.6VP-P (0.01Hz to 10Hz Typ) Voltage Gain: 140dB (Typ) PSRR: 130dB (Typ) CMRR: 130dB (Typ) Input Bias Current <1pA (Typ) Supply Operation: 2.7V to 6V (LTC2054) 2.7V to 5.5V (LTC2054HV) Common Mode Input Range from V- to V+ -0.5V Output Swings Rail-to-Rail Low Profile (1mm) SOT-23 (ThinSOTTM) Package The LTC(R)2054 and LTC2054HV are low power, low noise zero-drift operational amplifiers available in the 5-lead SOT-23 package. The LTC2054 operates from a single 2.7V to 6V supply. The LTC2054HV operates on supplies from 2.7V to 5.5V. The current consumption is 150A (typical), 175A maximum over temperature. The LTC2054, despite its miniature size, features uncompromising DC performance. The typical input offset voltage and offset drift are 0.5V and 25nV/C. The almost zero DC offset and drift are supported with a power supply rejection ratio (PSRR) and common mode rejection ratio (CMRR) of more than 130dB. The input common mode voltage ranges from the negative supply up to typically 0.5V from the positive supply. The open-loop gain is typically 140dB. The LTC2054 also features a 1.6VP-P DC to 10Hz noise and a 500kHz gain bandwidth product. , LTC and LT are registered trademarks of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. APPLICATIO S s s s s s s s s Thermocouple Amplifiers Electronic Scales Medical Instrumentation Strain Gauge Amplifiers High Resolution Data Acquisition DC Accurate RC Active Filters Low Side Current Sense Battery-Powered Systems TYPICAL APPLICATION Differential Bridge Amplifier 5V 5V 0.1F 250 225 SUPPLY CURRENT (A) 1F LT1790-2.5 200 175 150 125 100 75 50 499k 10k BRIDGE 4 5 1 AV = 100 - + LTC2054HV 3 2 25 0 -45 -25 -5 15 35 55 TEMPERATURE (C) 75 2054 TA02 0.1F 499k - 5V 2054 TA01 U Supply Current vs Temperature VS = 5V VS = 2.5V VS = 1.5V U U 2054f 1 LTC2054/LTC2054HV ABSOLUTE (Note 1) AXI U RATI GS PACKAGE/ORDER I FOR ATIO TOP VIEW OUT 1 V2 +IN 3 4 -IN - Total Supply Voltage (V + to V -) LTC2054 .............................................................. 7V LTC2054HV ......................................................... 12V Input Voltage ........................ (V + + 0.3V) to (V - - 0.3V) Output Short-Circuit Duration ......................... Indefinite Operating Temperature Range ............... - 40C to 85C Specified Temperature Range (Note 4) ................................................. - 40C to 85C Storage Temperature Range ................ - 65C to 150C Lead Temperature (Soldering, 10 sec)................. 300C 5 V+ S5 PACKAGE 5-LEAD PLASTIC TSOT-23 TJMAX = 150C, JA = 250C/W ORDER PART NUMBER LTC2054CS5 LTC2054HVCS5 LTC2054IS5 LTC2054HVIS5 S5 PART MARKING LTAGB LTAGD LTAGB LTAGD Consult LTC Marketing for parts specified with wider operating temperature ranges. (LTC2054, LTC2054HV) The q denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. VS = 3V unless otherwise noted. (Note 4) SYMBOL IS VOS VOS/T IB IOS en CMRR PSRR PARAMETER Supply Current Input Offset Voltage Average Input Offset Drift Long-Term Offset Drift Input Bias Current Input Offset Current Input Noise Voltage Common Mode Rejection Ratio Power Supply Rejection Ratio CONDITIONS No Load (Note 2) (Note 2) (Note 3) q ELECTRICAL CHARACTERISTICS MIN q q TYP 140 0.5 50 600 1.2 MAX 175 3 0.03 150 300 (Note 3) q RS = 100, 0.01Hz to 10Hz VCM = GND to (V + - 0.7V) q VS = 2.7V to 6V q 115 110 120 115 1.6 130 130 UNITS A V V/C nV/mo fA pA pA pA VP-P dB dB dB dB 2 U 2054f W U U WW W LTC2054/LTC2054HV (LTC2054, LTC2054HV) The q denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. VS = 3V unless otherwise noted. (Note 4) SYMBOL AVOL VOUT VOUT SR GBW fS PARAMETER Large-Signal Voltage Gain Output Voltage Swing High Output Voltage Swing Low Slew Rate Gain Bandwidth Product Internal Sampling Frequency CONDITIONS RL = 100k, VOUT = VS/2 q ELECTRICAL CHARACTERISTICS RL = 5k to GND RL = 100k to GND RL = 5k to GND RL = 100k to GND q q q q MIN 120 115 2.85 2.98 TYP 135 MAX 10 10 0.5 500 1.0 UNITS dB dB V V mV mV V/s kHz kHz (LTC2054, LTC2054HV) VS = 5V unless otherwise noted. (Note 4) SYMBOL IS VOS VOS/T IB IOS en CMRR PSRR AVOL VOUT VOUT SR GBW fS PARAMETER Supply Current Input Offset Voltage Average Input Offset Drift Long-Term Offset Drift Input Bias Current Input Offset Current Input Noise Voltage Common Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain Output Voltage Swing High Output Voltage Swing Low Slew Rate Gain Bandwidth Product Internal Sampling Frequency CONDITIONS No Load (Note 2) (Note 2) (Note 3) q MIN q q TYP 150 MAX 175 3 0.03 50 800 1.6 q 150 300 (Note 3) RS = 100, 0.01Hz to 10Hz VCM = GND to (V + - 0.7V) q VS = 2.7V to 6V q RL = 100k, VOUT = VS/2 q RL = 5k to GND RL = 100k to GND RL = 5k to GND RL = 100k to GND q q q q 120 115 120 115 125 120 4.75 4.98 1.6 130 130 140 10 10 0.5 500 1.0 UNITS A V V/C nV/mo fA pA pA pA VP-P dB dB dB dB dB dB V V mV mV V/s kHz kHz 2054f 3 LTC2054/LTC2054HV (LTC2054HV) The q denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. VS = 5V unless otherwise noted. (Note 4) SYMBOL IS VOS VOS/T IB IOS en CMRR PSRR AVOL VOUT SR GBW fS PARAMETER Supply Current Input Offset Voltage Average Input Offset Drift Long-Term Offset Drift Input Bias Current Input Offset Current Input Noise Voltage Common Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain Maximum Output Voltage Swing Slew Rate Gain Bandwidth Product Internal Sampling Frequency (Note 3) q ELECTRICAL CHARACTERISTICS CONDITIONS No Load (Note 2) (Note 2) q q MIN TYP 175 0.5 50 1 2 MAX 210 5 0.03 UNITS A V V/C nV/mo pA pA pA pA VP-P dB dB dB dB dB dB V V 150 300 (Note 3) q RS = 100, 0.01Hz to 10Hz VCM = V - to (V + - 0.9V) q 1.6 120 115 120 115 125 120 4.75 4.98 0.5 500 1.0 130 130 140 VS = 2.7V to 11V q RL = 100k, VOUT = GND q RL = 5k to GND RL = 100k to GND q q V/s kHz kHz Note 1: Absolute Maximum Ratings are those values beyond which the life of the device may be impaired. Note 2: These parameters are guaranteed by design. Thermocouple effects preclude measurements of these voltage levels during automated testing. Note 3: Limit is determined by high speed automated test capability. See characteristic curves for actual typical performance. For tighter specifications, please consult Linear Technology Marketing. Note 4: The LTC2054C, LTC2054HVC are guaranteed to meet specified performance from 0C to 70C and are designed, characterized and expected to meet these extended temperature limits, but are not tested at -40C and 85C. The LTC2054I, LTC2054HVI are guaranteed to meet the specified performance from -40C and 85C. 2054f 4 LTC2054/LTC2054HV TYPICAL PERFOR A CE CHARACTERISTICS Common Mode Rejection Ratio vs Frequency 140 120 100 CMRR (dB) VS = 3V OR 5V VCM = 0.5VP-P CMRR (dB) 80 60 40 20 0 1 10 100 1k FREQUENCY (Hz) 10k 100k 2054 G01 80 VS = 3V 60 40 PSRR (dB) Output Voltage Swing vs Load Resistance 5 4 3 OUTPUT SWING (V) VS = 5V VS = 2.5V OUTPUT SWING (V) 1 0 -1 -2 -3 -4 -5 0 2 VS = 1.5V VS = 1.5V VS = 2.5V VS = 5V 8 6 4 LOAD RESISTANCE (k) 10 2054 G03 8 6 4 2 0 OUTPUT SWING (V) 2 Gain/Phase vs Frequency 120 100 80 PHASE -60 VS = 2.5V VIN = 0.5VP-P -80 RL = 10k -100 BIAS CURRENT (pA) INPUT BIAS CURRENT MAGNITUDE (pA) GAIN (dB) 60 GAIN 40 20 0 -20 -40 10 CL = 30pF CL = 50pF CL = 100pF 100 1k 10k 100k FREQUENCY (Hz) 1M UW RL TO GND 2054 G05 DC CMRR vs Common Mode Input Voltage 140 120 100 VS = 5V 140 120 100 80 60 40 20 PSRR vs Frequency -PSRR +PSRR 0 -20 VS = 2.5V VIN = 0.5VRMS -40 100 1k 10k 100k 10 FREQUENCY (Hz) 20 0 0 1 2 VCM (V) 2054 G02 TA = 25C 3 4 5 1M LTC2054 * G14 Single Supply Output Swing vs Output Current 12 VS = 10V 10 RL TO V- 5 Dual Supply Output Swing vs Output Current 4 RL TO GND 3 2 1 0 -1 -2 -3 -4 VS = 2.5V VS = 5V 0 1 OUTPUT CURRENT (mA) 10 2054 G20 VS = 5V VS = 2.5V VS = 1.5V VS = 5V VS = 3V VS = 1.5V 0 1 OUTPUT CURRENT (mA) 10 2054 G04 -5 Bias Current vs Temperature 100 1.5V 2.5V 5V 4 0 -4 -8 -12 -16 -20 -24 Input Bias Current vs Input Common Mode Voltage IN+, VS = 3V IN+, VS = 5V IN+, VS = 10V -120 -140 -160 -180 -200 -220 10M 10 IN-, VS = 3V IN-, VS = 5V PHASE (DEG) IN-, VS = 10V 1 0.1 -45 -25 55 -5 15 35 TEMPERATURE (C) 75 2054 G06 0 1 23456789 INPUT COMMON MODE VOLTAGE (V) 10 2054 G13 2054f 5 LTC2054/LTC2054HV TYPICAL PERFOR A CE CHARACTERISTICS Transient Response Input Overload Recovery INPUT (V) 1 OUTPUT (V) OUTPUT (V) 0 INPUT (V) -1 0 -0.2 AV = -100 2ms/DIV RL = 100k VS = 2.5V VIN = 50Hz 200mVP-P OFFSET = -100mV AV = 1 10s/DIV RL = 100k CL = 50pF VS = 2.5V VIN = 10kHz 2VP-P OUTPUT (V) Common Mode Input Range vs Supply Voltage 10 COMMON MODE RANGE (V) SHORT-CIRCUIT OUTPUT CURRENT, IOUT (mA) 11 9 8 7 6 5 4 3 2 1 0 0 1 2 345678 SUPPLY VOLTAGE (V) 9 10 11 2054 G09 200 190 180 SUPPLY CURRENT (A) SUPPLY CURRENT (A) 170 160 150 140 130 120 110 100 3 4 5 7 8 9 6 TOTAL SUPPLY VOLTAGE (V) 10 2054 G11 250 INPUT REFFERED VOLTAGE NOISE DENSITY (nV/Hz) Supply Current vs Supply Voltage TA = 25C 225 200 175 150 125 100 75 50 25 6 UW 2054 G07 Input Overload Recovery 0.2 0 2.5 0 0 -2.5 2054 G08 AV = -100 2ms/DIV RL = 100k VS = 2.5V VIN = 50Hz 200mVP-P OFFSET = 100mV 2054 G18 Short-Circuit Output Current vs Supply Voltage 10 8 6 4 2 0 -2 -4 -6 3 7 8 9 10 11 4 5 6 TOTAL SUPPLY VOLTAGE, V + TO V - (V) 2054 G10 ISOURCE VOUT = V - ISINK VOUT = V + Supply Current vs Temperature Noise Spectrum 100 90 80 70 60 50 40 30 20 10 AV = 100 VS = 2.5V 0 10 1k 100 FREQUENCY (Hz) VS = 5V VS = 2.5V VS = 1.5V 0 -45 -25 -5 15 35 55 TEMPERATURE (C) 75 2054 G12 10k 2054 G15 2054f LTC2054/LTC2054HV TEST CIRCUITS Electrical Characteristics Test Circuit 100k OUTPUT V+ 10 4 10 100k DC-10Hz Noise Test Circuit 475k - + 5 LTC2054 1 4 - LTC2054 1 0.01F 158k 0.1F 316k 475k 3 3 - 0.01F LT1012 TO X-Y RECORDER 2 V- RL 2054 TC01 + + FOR 1Hz NOISE BW INCREASE ALL THE CAPACITORS BY A FACTOR OF 10. 2054 TC02 APPLICATIONS INFORMATION Clock Feedthrough, Input Bias Current The LTC2054 uses auto-zeroing circuitry to achieve an almost zero DC offset over temperature, common mode voltage, and power supply voltage. The frequency of the clock used for auto-zeroing is typically 1.0kHz. The term clock feedthrough is broadly used to indicate visibility of this clock frequency in the op amp output spectrum. There are typically two types of clock feedthrough in auto zeroed op amps like the LTC2054. The first form of clock feedthrough is caused by the settling of the internal sampling capacitor and is input referred; that is, it is multiplied by the closed loop gain of the op amp. This form of clock feedthrough is independent of the magnitude of the input source resistance or the magnitude of the gain setting resistors. The LTC2054 has a residue clock feedthrough of less then 0.2VRMS input referred at 1.0kHz. The second form of clock feedthrough is caused by the small amount of charge injection occurring during the sampling and holding of the op amp's input offset voltage. The current spikes are multiplied by the impedance seen at the input terminals of the op amp, appearing at the output multiplied by the closed loop gain of the op amp. To reduce this form of clock feedthrough, use smaller valued gain setting resistors and minimize the source resistance at the input. If the resistance seen at the inputs is less than 10k, this form of clock feedthrough is less than the amount of residue clock feedthrough from the first form described above. Placing a capacitor across the feedback resistor reduces either form of clock feedthrough by limiting the bandwidth of the closed loop gain. Input bias current is defined as the DC current into the input pins of the op amp. The same current spikes that cause the second form of clock feedthrough described above, when averaged, dominate the DC input bias current of the op amp below 70C. At temperatures above 70C, the leakage of the ESD protection diodes on the inputs increases the input bias currents of both inputs in the positive direction, while the current caused by the charge injection stays relatively constant. At elevated temperatures (above 85C) the leakage current begins to dominate and both the negative and positive pin's input bias currents are in the positive direction (into the pins). U W U U 2054f 7 LTC2054/LTC2054HV APPLICATIONS INFORMATION LTC2054 DC to 1Hz Noise 0.4V 10 SEC LTC2054 DC to 10Hz Noise 1V 1 SEC 8 U W U U 2054 G16 2054 G17 2054f LTC2054/LTC2054HV APPLICATIONS INFORMATION Extended Common Mode Range The LTC2054 input stage is designed to allow nearly railto-rail input common-mode signals. In addition, signals that extend beyond the allowed input common-mode range do not cause output inversion. Voltage Follower with Input Exceeding the Common Mode Range 2.5V 2 - + 7 6 OUTPUT 100k 1k 3.75VP SINE WAVE LTC2054 3 4 -2.5V OUTPUT VOUT = 2V/DIV INPUT VIN = 2V/DIV 2054 TA09 U W U U LTC2054 Extended Common Mode Range AV = 1 500s/DIV RL = 100k VS = 2.5V VIN = 500Hz 7.5VP-P 2054 G19 2054f 9 LTC2054/LTC2054HV TYPICAL APPLICATIONS Gain of 1001 Single Supply Instrumentation Amplifier 1k V+ 1M 4 0.1F OUTPUT DC OFFSET 6mV FOR 0.1% RESISTORS, CMRR = 54dB Instrumentation Amplifier with 100V Common Mode Input Voltage 1k V+ 1M + VIN - 1k 1M 4 1M 10 U 1M V+ 1 1k 4 - + 5 LTC2054 - + 5 LTC2054 1 VOUT -VIN 3 2 +VIN 3 2 2054 TA04 - + 5 1 1k 4 V+ LTC2054HV 3 2 V- - + V 5 1 VOUT LTC2054HV 3 2 - OUTPUT OFFSET 3mV FOR 0.1% RESISTORS, CMRR = 54dB 2054 TA06 2054f LTC2054/LTC2054HV PACKAGE DESCRIPTIO 0.62 MAX 0.95 REF 3.85 MAX 2.62 REF RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.20 BSC 1.00 MAX DATUM `A' 0.30 - 0.50 REF 0.09 - 0.20 (NOTE 3) NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 6. JEDEC PACKAGE REFERENCE IS MO-193 Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. U S5 Package 5-Lead Plastic TSOT-23 (Reference LTC DWG # 05-08-1635) 2.90 BSC (NOTE 4) 1.22 REF 1.4 MIN 2.80 BSC 1.50 - 1.75 (NOTE 4) PIN ONE 0.30 - 0.45 TYP 5 PLCS (NOTE 3) 0.95 BSC 0.80 - 0.90 0.01 - 0.10 1.90 BSC S5 TSOT-23 0302 2054f 11 LTC2054/LTC2054HV TYPICAL APPLICATIONS Ground Referred Precision Current Sources LT1634-1.25 V+ 10k 4 - + 5 LTC2054 1 1k 3 2 RSET 1.25V IOUT = ------ RSET 0 IOUT 100A 0.2V VOUT (V+) - 1.5V RELATED PARTS PART NUMBER LTC1049 LTC1050 LTC1150 LTC1152 LT1677 LT1884/LT1885 LTC2050 LTC2053 DESCRIPTION Low Power Zero-Drift Op Amp Precision Zero-Drift Op Amp 15V Zero-Drift Op Amp Rail-to-Rail Input and Output Zero-Drift Op Amp Low Noise Rail-to-Rail Input and Ouptput Precision Op Amp Rail-to-Rail Output Precision Op Amp Zero-Drift Op Amp Zero-Drift Instrumentation Amp COMMENTS Low Supply Current 200A Single Supply Operation 4.75V to 16V, Noise Tested and Guaranteed Dual/Quad Version of the LTC1050 High Voltage Operation 18V Single Zero-Drift Op Amp with Rail-to-Rail Input and Output and Shutdown VOS = 90V, VS = 2.7V to 44V VOS = 50V, IB = 400pA, VS = 2.7V to 40V Enhanced Output Drive Capability Dual/Quad Version of the LTC2050 in MS8/GN16 Package Rail-to-Rail Input LTC1051/LTC1053 Precision Zero-Drift Op Amp LTC2051/LTC2052 Dual/Quad Zero-Drift Op Amp 12 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 q FAX: (408) 434-0507 q U Ultra-Precision, Wide Dynamic Range Photodiode Amplifier 100k 330pF 5V - LTC2054HV ANY PHOTODIODE VBIAS + -5V GAIN = 0.1V/A 50A FULL SCALE 2054 TA10 + VOUT - 2054 TA05 2054f LT/TP 0104 1K * PRINTED IN USA www.linear.com (c) LINEAR TECHNOLOGY CORPORATION 2003 |
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