LT1920 Datasheet | Linear Technology

LT1920 Single Resistor Gain Programmable, Precision Instrumentation Amplifier Features s s s s s s s s s s s s s s DESCRIPTIO Single Gain Set Resistor: G = 1 to 10,000 Gain Error: G = 10, 0.3% Max Gain Nonlinearity: G = 10, 30ppm Max Input Offset Voltage: G = 10, 225µV Max Input Offset Voltage Drift: 1µV/°C Max Input Bias Current: 2n A Max PSRR at G = 1: 80d B Min CMRR at G = 1: 75d B Min Supply Current: 1.3m A Max Wide Supply Range: ± 2.3V to ± 18V 1k Hz Voltage Noise: 7.5n V/√Hz 0.1Hz to 10Hz Noise: 0.28µVP-P Available in 8-Pin PDIP and SO Packages Meets IEC 1000-4-2 Level 4 ESD Tests with Two External 5k Resistors U APPLICATIO S s s s s s Bridge Amplifiers Strain Gauge Amplifiers Thermocouple Amplifiers Differential to Single-Ended Converters Medical Instrumentation The LT ®1920 is a low power, precision instrumentation amplifier that requires only one external resistor to set gains of 1 to 10,000. The low voltage noise of 7.5n V/√Hz (at 1k Hz) is not promised by low power dissipation (0.9m A typical for ± 2.3V to ±15V supplies). The high accuracy of 30ppm maximum nonlinearity and 0.3% max gain error (G = 10) is not degraded even for load resistors as low as 2k (previous monolithic instrumentation amps used 10k for their nonlinearity specifications). The LT1920 is laser trimmed for very low input offset voltage (125µV max), drift (1µV/°C), high CMRR (75d B, G = 1) and PSRR (80d B, G = 1). Low input bias currents of 2n A max are achieved with the use of superbeta processing. The output can handle capacitive loads up to 1000p F in any gain configuration while the inputs are ESD protected up to 13k V (human body). The LT1920 with two external 5k resistors passes the IEC 1000-4-2 level 4 specification. The LT1920, offered in 8-pin PDIP and SO packages, is a pin for pin and spec for spec improved replacement for the AD620. The LT1920 is the most cost effective solution for precision instrumentation amplifier applications. For even better guaranteed performance, see the...