Final Electrical Specifications LTC2050 Zero-Drift Operational Amplifier in SOT-23 November 1999 U DESCRIPTIO FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ The LTC®2050 is a low drift operational amplifier available in the 5- or 6-lead SOT-23 and SO-8 packages. It operates from a single 2.7V supply while still supporting 5V applications. The power consumption is 800µA and the versions in the 6-lead SOT-23 and SO-8 packages offer power shutdown (active low). SOT-23 Package Maximum Offset Voltage of 3µV Maximum Offset Voltage Drift of 30nV/°C Noise: 1.5µVP-P (0.1Hz to 10Hz Typ) Voltage Gain: 140dB (Typ) PSRR: 130dB (Typ) CMRR: 130dB (Typ) Supply Current: 0.8mA (Typ) Single Supply Operation: 2.7V to 6V Extended Common Mode Input Range Output Swings Rail-to-Rail Overload Recovery Time: 2ms (Typ) The LTC2050, despite its miniature size, features uncompromising DC performance. The typical input offset voltage and offset drift are 0.5µV and 10nV/°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 1V from the positive supply. The LTC2050 also has an enhanced output stage capable of driving loads as low as 1kΩ to both supply rails. The open-loop gain, loaded with 1kΩ, is in excess of 140dB. The LTC2050 also features a 1.5µVP-P DC to 10Hz noise and a 3MHz gain bandwidth product. UO APPLICATI ■ ■ ■ ■ ■ Thermocouple Amplifiers Electronic Scales Medical Instrumentation Strain Gauge Amplifiers High Resolution Data Acquisition DC Accurate RC Active Filters , LTC and LT are registered trademarks of Linear Technology Corporation. UO ■ S TYPICAL APPLICATI Differential Bridge Amplifier Input Referred Noise 0.1Hz to 10Hz 5V 5V VS = 5V 3 50Ω GAIN TRIM 1000pF 0.1µF 1 µV 18.2k 350Ω STRAIN GAUGE 2 – –1 LTC2050 3 1000pF + 0 7 4 6 AV = 100 –3 18.2k 0 2 2050 TA01 6 4 TIME (s) 8 10 LT2050 TA02 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. 1 LTC2050 W W W AXI U U ABSOLUTE RATI GS (Note 1) Total Supply Voltage (V + to V –) ............................... 7V Input Voltage ........................ (V + + 0.3V) to (V – – 0.3V) Output Short-Circuit Duration ......................... Indefinite Operating Temperature Range ............... – 40°C to 85°C Specified Temperature Range (Note 3) .. – 40°C to 85°C Storage Temperature Range ................ – 65°C to 150°C Lead Temperature (Soldering, 10 sec)................. 300°C W U U PACKAGE/ORDER I FOR ATIO TOP VIEW TOP VIEW TOP VIEW 5 V+ OUT 1 OUT 1 V– 2 V– 2 +IN 3 4 –IN +IN 3 SHDN 1 8 NC 6 V+ –IN 2 7 V+ 5 SHDN +IN 3 6 OUT V– 4 5 NC 4 –IN S5 PACKAGE 5-LEAD PLASTIC SOT-23 S6 PACKAGE 6-LEAD PLASTIC SOT-23 TJMAX = 125°C, θJA = 250°CW TJMAX = 125°C, θJA = 230°CW S8 PACKAGE 8-LEAD PLASTIC SO TJMAX = 125°C, θJA = 190°CW ORDER PART NUMBER S5 PART MARKING ORDER PART NUMBER S6 PART MARKING ORDER PART NUMBER S8 PART MARKING LTC2050CS5 LTIN LTC2050CS6 LTIP LTC2050CS8 LTC2050IS8 2050 2050I Consult factory for Military grade parts. ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = 3V unless otherwise noted. (Note 3) PARAMETER CONDITIONS Input Offset Voltage (Note 2) Average Input Offset Drift (Note 2) MIN TYP ±0.5 50 Input Bias Current ±20 Common Mode Rejection Ratio VCM Maximum Output Voltage Swing ● ±150 ±200 pA pA – 1.3 130 130 dB dB ● 120 115 130 130 dB dB ● 120 115 140 140 dB dB ● ● 2.85 2.95 2.94 2.98 V V 2 Gain Bandwidth Product 2 µVP-P 115 110 Slew Rate Supply Current 1.5 ● RL = 10k RL = 2k RL = 10k nV/√mo pA pA Power Supply Rejection Ratio Large-Signal Voltage Gain V/µs 3 VSHDN = V +, No Load VSHDN = V – µV µV/°C ● RS = 100Ω, DC to 10Hz to V + UNITS ±75 ±300 Input Offset Current = V– ±3 ±0.03 ● Long-Term Offset Drift Input Noise Voltage MAX ● ● 0.75 MHz 1.1 10 mA µA LTC2050 ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = 3V unless otherwise noted. (Note 3) PARAMETER CONDITIONS MIN Shutdown Pin Input Low Voltage ● Shutdown Pin Input High Voltage ● Shutdown Pin Input Current VSHDN = V– TYP MAX UNITS V – + 0.5 V V + – 0.5 V – 0.5 ● Internal Sampling Frequency µA –3 7.5 kHz The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = 5V unless otherwise noted. (Note 3) PARAMETER CONDITIONS Input Offset Voltage (Note 2) Average Input Offset Drift (Note 2) MIN TYP ±0.5 50 Maximum Output Voltage Swing ● ±300 ±400 pA pA RS = 100Ω, DC to 10Hz = V – to V + – 1.3 130 130 dB dB ● 120 115 130 130 dB dB ● 125 120 140 140 dB dB ● ● 4.85 4.95 4.94 4.98 V V 2 Gain Bandwidth Product V/µs 3 VSHDN = V +, No Load VSHDN = V – Shutdown Pin Input Low Voltage 0.8 ● ● ● Shutdown Pin Input High Voltage Shutdown Pin Input Current µVP-P 120 115 Slew Rate Supply Current 1.5 ● RL = 10k RL = 2k RL = 10k nV/√mo pA pA Power Supply Rejection Ratio Large-Signal Voltage Gain ● VSHDN = V– Internal Sampling Frequency 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. µV µV/°C ● Input Offset Current VCM UNITS ±150 ±300 Input Bias Current Common Mode Rejection Ratio ±3 ±0.03 ● Long-Term Offset Drift Input Noise Voltage MAX ● MHz 1.2 10 mA µA V – + 0.5 V –5 µA V + – 0.5 V – 0.5 7.5 kHz Note 3: The LTC2050C is guaranteed to meet specified performance from 0°C to 70°C and is designed, characterized and expected to meet these extended temperature limits, but is not tested at – 40°C and 85°C. The LTC2050I is guaranteed to meet the extended temperature limits. 3 LTC2050 U PACKAGE DESCRIPTION Dimensions in inches (millimeters) unless otherwise noted. S5 Package 5-Lead Plastic SOT-23 (LTC DWG # 05-08-1633) 2.60 – 3.00 (0.102 – 0.118) 1.50 – 1.75 (0.059 – 0.069) 0.35 – 0.55 (0.014 – 0.022) 0.00 – 0.15 (0.00 – 0.006) 0.90 – 1.45 (0.035 – 0.057) 2.80 – 3.00 (0.110 – 0.118) (NOTE 3) 0.35 – 0.50 0.90 – 1.30 (0.014 – 0.020) (0.035 – 0.051) FIVE PLACES (NOTE 2) 0.09 – 0.20 (0.004 – 0.008) (NOTE 2) 0.95 (0.037) REF 1.90 (0.074) REF NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DIMENSIONS ARE INCLUSIVE OF PLATING 3. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 4. MOLD FLASH SHALL NOT EXCEED 0.254mm 5. PACKAGE EIAJ REFERENCE IS SC-74A (EIAJ) S5 SOT-23 0599 S6 Package 6-Lead Plastic SOT-23 (LTC DWG # 05-08-1634) 2.6 – 3.0 (0.110 – 0.118) 1.50 – 1.75 (0.059 – 0.069) 0.35 – 0.55 (0.014 – 0.022) 0.00 – 0.15 (0.00 – 0.006) 0.90 – 1.45 (0.035 – 0.057) 2.80 – 3.00 (0.110 – 0.118) (NOTE 3) 0.35 – 0.50 0.90 – 1.30 (0.014 – 0.020) (0.035 – 0.051) SIX PLACES (NOTE 2) 0.09 – 0.20 (0.004 – 0.008) (NOTE 2) 0.95 (0.037) REF 1.90 (0.074) REF NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DIMENSIONS ARE INCLUSIVE OF PLATING 3. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 4. MOLD FLASH SHALL NOT EXCEED 0.254mm 5. PACKAGE EIAJ REFERENCE IS SC-74A (EIAJ) S6 SOT-23 0898 S8 Package 8-Lead Plastic Small Outline (Narrow 0.150) (LTC DWG # 05-08-1610) 0.189 – 0.197* (4.801 – 5.004) 0.010 – 0.020 × 45° (0.254 – 0.508) 0.008 – 0.010 (0.203 – 0.254) 0.053 – 0.069 (1.346 – 1.752) 0°– 8° TYP 0.016 – 0.050 (0.406 – 1.270) 0.014 – 0.019 (0.355 – 0.483) TYP *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE 8 7 6 5 0.004 – 0.010 (0.101 – 0.254) 0.050 (1.270) BSC 0.150 – 0.157** (3.810 – 3.988) 0.228 – 0.244 (5.791 – 6.197) SO8 1298 1 2 3 4 RELATED PARTS PART NUMBER DESCRIPTION COMMENTS LTC1049 Low Power Zero-Drift Op Amp Low Supply Current 200µA LTC1050 Precision Zero-Drift Op Amp Single Supply Operation 4.75V to 16V, Noise Tested and Guaranteed LTC1051/LTC1053 Precision Zero-Drift Op Amp Dual/Quad LTC1150 ±15V Zero-Drift Op Amp High Voltage Operation ±18V LTC1152 Rail-to-Rail Input and Output Zero-Drift Op Amp Single Zero-Drift Op Amp with Rail-to-Rail Input and Output and Shutdown 4 Linear Technology Corporation 2050i LT/TP 1199 4K • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408)432-1900 ● FAX: (408) 434-0507 ● www.linear-tech.com LINEAR TECHNOLOGY CORPORATION 1999