LT1920是Single Resistor Gain Programmable, Precision Instrumentation Amplifier

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LT1920 - LT1920是Single Resistor Gain Programmable, Precision Instrumentation Amplifier

LT1920是Linear公司的一款精准放大器产品，LT1920是Single Resistor Gain Programmable, Precision Instrumentation Amplifier，本站介绍了LT1920的封装应用图解、特点和优点、功能等，并给出了与LT1920相关的凌力尔特元器件型号供参考。

LT1920 - Single Resistor Gain Programmable, Precision Instrumentation Amplifier

LT1920 - Single Resistor Gain Programmable, Precision Instrumentation Amplifier - Linear Technology（凌力尔特）

功能描述

The LT1920 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/rtHz (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 (125µV 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 configuration 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.

特点

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: 2nA Max

PSRR at G = 1: 80dB Min

CMRR at G = 1: 75dB Min

Supply Current: 1.3mA Max

Wide Supply Range: ±2.3V to ±18V

1kHz Voltage Noise: 7.5nV/rtHz

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

应用

Bridge Amplifiers

Strain Gauge Amplifiers

Thermocouple Amplifiers

Differential to Single-Ended Converters

Medical Instrumentation

以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）

器件型号	封装	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量)
LT1920CN8	N-8	C	$3.60	$3.05
LT1920CN8#PBF	N-8	C	$3.60	$3.05
LT1920CS8	SO-8	C	$3.60	$3.05
LT1920CS8#PBF	SO-8	C	$3.60	$3.05
LT1920CS8#TR	SO-8	C		$3.11
LT1920CS8#TRPBF	SO-8	C		$3.11
LT1920IN8	N-8	I	$3.80	$3.25
LT1920IN8#PBF	N-8	I	$3.80	$3.25
LT1920IS8	SO-8	I	$3.80	$3.25
LT1920IS8#PBF	SO-8	I	$3.80	$3.25
LT1920IS8#TR	SO-8	I		$3.31
LT1920IS8#TRPBF	SO-8	I		$3.31