PGA202 Datasheet, PDF (1/10 Pages) Burr-Brown (TI) – Digitally Controlled Programmable-Gain INSTRUMENTATION AMPLIFIER

®
PGA202/203
Digitally Controlled Programmable-Gain
INSTRUMENTATION AMPLIFIER
FEATURES
q DIGITALLY PROGRAMMABLE GAINS:
DECADE MODEL—PGA202
GAINS OF 1, 10, 100, 1000
BINARY MODEL—PGA203
GAINS OF 1, 2, 4, 8
q LOW BIAS CURRENT: 50pA max
q FAST SETTLING: 2µs to 0.01%
q LOW NON-LINEARITY: 0.012% max
q HIGH CMRR: 80dB min
q NEW TRANSCONDUCTANCE CIRCUITRY
q LOW COST
APPLICATIONS
q DATA ACQUISITION SYSTEMS
q AUTO-RANGING CIRCUITS
q DYNAMIC RANGE EXPANSION
q REMOTE INSTRUMENTATION
q TEST EQUIPMENT
DESCRIPTION
The PGA202 is a monolithic instrumentation ampli-
fier 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 band-
width nearly constant with gain. Gain and offsets are
laser trimmed to allow use without any external com-
ponents. 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.
V_OS Adjust
6
9
5.3pF*
10 Filter B
+V_{IN 8}
+V_IN 7
Front
I
End
1
and
Logic
Circuits
I
2
30kΩ*
–
+
30kΩ*
11 Sense
12 V_OUT
4 V_REF
1 2 14
A₀ A₁ Digital Common
5.3pF*
*±20%
5 Filter A
Covered by U.S. PATENT #4,883,422
International Airport Industrial Park • Mailing Address: PO Box 11400 • Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706
Tel: [phone] • Twx: 910-952-1111 • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]
©1989 Burr-Brown Corporation
PDS-11006C
®
PGA^P2^rin0^te2^{d i}/ⁿ2^U0^.S.3^{A. August, 1993}