herunterladen
1
®
PGA204/205
A
1
A
2
A
3
12
11
10
25kΩ25kΩ
25kΩ25kΩ
13
7
5
14
16
4
V
IN
V
IN
V+
PGA204
PGA205
Ref
V
O
–
+
Over-Voltage
Protection
Over-Voltage
Protection
Feedback
Digitally Selected
Feedback Network
1
V
O1
15
A
1
A
0
Digital
Ground
6 9 8
V
O2
V–V
OS
Adj
PGA204
PGA205
International Airport Industrial Park • Mailing Address: PO Box 11400 • Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706
Tel: (520) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
Programmable Gain
INSTRUMENTATION AMPLIFIER
FEATURES
● DIGITALLY PROGRAMMABLE GAIN:
PGA204: G=1, 10, 100, 1000V/V
PGA205: G=1, 2, 4, 8V/V
● LOW OFFSET VOLTAGE: 50
µV max
● LOW OFFSET VOLTAGE DRIFT: 0.25
µV/°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
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.
Gain is selected by two TTL or CMOS-compatible
address lines, A
0
and A
1
. 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 op-
erate 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, speci-
fied for the –40°C to +85°C temperature range.
®
©
1991 Burr-Brown Corporation PDS-1176A Printed in U.S.A. October, 1993
SBOS022
Verzeichnis
