描述 Description

The PGA204 and PGA205 are low cost, general purpose programmable-gain instrumentation amplifiers offering excellent accuracy. Gains are digitally selected: PGA204?1, 10, 100, 1000, and PGA205?1, 2, 4, 8V/V. The precision and versatility, and low cost of the PGA204 and PGA205 make them ideal for a wide range of applications.

Gain is selected by two TTL or CMOS-compatible address lines, A0 and A1. Internal input protection can withstand up to ±40V on the analog inputs without damage.

The PGA204 and PGA205 are laser trimmed for very low offset voltage (50μV), drift (0.25μV/°C) and high common-mode rejection (115dB at G=1000). They operate with power supplies as low as ±4.5V, allowing use in battery operated systems. Quiescent current is 5mA.

The PGA204 and PGA205 are available in 16-pin plastic DIP, and SOL-16 surface-mount packages, specified for the &3150;40°C to +85°C temperature range.

特性 Features

? DIGITALLY PROGRAMMABLE GAIN:
? PGA204: G=1, 10, 100, 1000V/V
? PGA205: G=1, 2, 4, 8V/V

? LOW OFFSET VOLTAGE: 50μV max
? LOW OFFSET VOLTAGE DRIFT: 0.25μV/°C
? LOW INPUT BIAS CURRENT: 2nA max
? LOW QUIESCENT CURRENT: 5.2mA typ
? NO LOGIC SUPPLY REQUIRED
? 16-PIN PLASTIC DIP, SOL-16 PACKAGES
? APPLICATIONS
? DATA ACQUISITION SYSTEM
? GENERAL PURPOSE ANALOG BOARDS
? MEDICAL INSTRUMENTATION