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LT1920IN8 Datasheet(PDF) 1 Page - Linear Technology |
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LT1920IN8 Datasheet(HTML) 1 Page - Linear Technology |
1 / 12 page 1 LT1920 Single Resistor Gain Programmable, Precision Instrumentation Amplifier 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 7.5nV/ √Hz (at 1kHz) is not compromised by low power dissipation (0.9mA 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 (125 µV max), drift (1µV/°C), high CMRR (75dB, G = 1) and PSRR (80dB, G = 1). Low input bias currents of 2nA max are achieved with the use of superbeta processing. The output can handle capacitive loads up to 1000pF in any gain configu- ration while the inputs are ESD protected up to 13kV (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 LT1167. s Single Gain Set Resistor: G = 1 to 10,000 s Gain Error: G = 10, 0.3% Max s Gain Nonlinearity: G = 10, 30ppm Max s Input Offset Voltage: G = 10, 225 µV Max s Input Offset Voltage Drift: 1 µV/°C Max s Input Bias Current: 2nA Max s PSRR at G = 1: 80dB Min s CMRR at G = 1: 75dB Min s Supply Current: 1.3mA Max s Wide Supply Range: ±2.3V to ±18V s 1kHz Voltage Noise: 7.5nV/ √Hz s 0.1Hz to 10Hz Noise: 0.28 µVP-P s Available in 8-Pin PDIP and SO Packages s Meets IEC 1000-4-2 Level 4 ESD Tests with Two External 5k Resistors , LTC and LT are registered trademarks of Linear Technology Corporation. s Bridge Amplifiers s Strain Gauge Amplifiers s Thermocouple Amplifiers s Differential to Single-Ended Converters s Medical Instrumentation OUTPUT VOLTAGE (2V/DIV) G = 1000 RL = 1k VOUT = ±10V 1167 TA02 Gain Nonlinearity Single Supply Barometer – + + – 2 1 1 1 1 2 R5 392k R4 50k R3 50k R8 100k R6 1k LT1634CCZ-1.25 8 4 1/2 LT1490 3 RSET VS = 8V TO 30V 5k 5k 5k 5k VS 5 4 3 2 – + 7 1/2 LT1490 5 6 2 8 LUCAS NOVA SENOR NPC-1220-015-A-3L 7 VS 6 1920 TA01 5 TO 4-DIGIT DVM 4 R2 12 Ω LT1920 G = 60 R1 825 Ω 3 6 R7 50k VOLTS 2.800 3.000 3.200 INCHES Hg 28.00 30.00 32.00 FEATURES DESCRIPTIO APPLICATIO S TYPICAL APPLICATIO |
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