®
PGA204
PGA205
Programmable Gain
INSTRUMENTATION AMPLIFIER
FEATURES
● DIGITALLY PROGRAMMABLE GAIN:
DESCRIPTION
The PGA204 and PGA205 are low cost, general pur-
pose programmable-gain instrumentation amplifiers
offering excellent accuracy. Gains are digitally se-
lected: 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.
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
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.
● 16-PIN PLASTIC DIP, SOL-16 PACKAGES
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 op-
erate with power supplies as low as ±4.5V, allowing use
in battery operated systems. Quiescent current is 5mA.
APPLICATIONS
● DATA ACQUISITION SYSTEM
● GENERAL PURPOSE ANALOG BOARDS
● MEDICAL INSTRUMENTATION
The PGA204 and PGA205 are available in 16-pin
plastic DIP, and SOL-16 surface-mount packages, speci-
fied for the –40°C to +85°C temperature range.
VO1 V+
1
13
PGA204
PGA205
–
VIN
4
Over-Voltage
Protection
Feedback
12
A1
25kΩ
25kΩ
16
A1
A0
Digitally Selected
Feedback Network
A3
VO
15
14
11
10
Digital
Ground
A2
Ref
+
VIN
5
Over-Voltage
Protection
25kΩ
25kΩ
6
7
9
8
VOS Adj
VO2
V–
International Airport Industrial Park
•
Mailing Address: PO Box 11400
Cable: BBRCORP
•
Tucson, AZ 85734
•
Street Address: 6730 S. Tucson Blvd.
• Tucson, AZ 85706
Tel: (520) 746-1111
•
Twx: 910-952-1111
•
•
Telex: 066-6491
•
FAX: (520) 889-1510
•
Immediate Product Info: (800) 548-6132
®
©1991 Burr-Brown Corporation
PDS-1176A
Printed in U.S.A. October, 1993
PGA204/205
1