PGA203中文资料德州仪器数据手册PDF规格书

FEATURES

DIGITALLY PROGRAMMABLE GAINS:

DECADE MODEL—PGA202

GAINS OF 1, 10, 100, 1000

BINARY MODEL—PGA203

GAINS OF 1, 2, 4, 8

LOW BIAS CURRENT: 50pA max

FAST SETTLING: 2ms to 0.01%

LOW NON-LINEARITY: 0.012% max

HIGH CMRR: 80dB min

NEW TRANSCONDUCTANCE CIRCUITRY

LOW COST

APPLICATIONS

DATA ACQUISITION SYSTEMS

AUTO-RANGING CIRCUITS

DYNAMIC RANGE EXPANSION

REMOTE INSTRUMENTATION

TEST EQUIPMENT

DESCRIPTION

The PGA202 is a monolithic instrumentation amplifier

with digitally controlled gains of 1, 10, 100, and

1000. The PGA203 provides gains of 1, 2, 4, and 8.

Both have TTL or CMOS-compatible inputs for easy

microprocessor interface. Both have FET inputs and a

new transconductance circuitry that keeps the bandwidth

nearly constant with gain. Gain and offsets are

laser trimmed to allow use without any external components.

Both amplifiers are available in ceramic or

plastic packages. The ceramic package is specified

over the full industrial temperature range while the

plastic package covers the commercial range.