®
INA1
11
INA111
INA1
11
High Speed FET-Input
INSTRUMENTATION AMPLIFIER
FEATURES
q
FET INPUT: I
B
= 20pA max
q
LOW OFFSET VOLTAGE: 500
µ
V max
q
LOW OFFSET VOLTAGE DRIFT:
5
µ
V/
°
C max
q
HIGH COMMON-MODE REJECTION:
106dB min
q
8-PIN PLASTIC DIP, SOL-16 SOIC
q
HIGH SPEED: T
S
= 4
µ
s (G = 100, 0.01%)
DESCRIPTION
The INA111 is a high speed, FET-input instrumenta-
tion amplifier offering excellent performance.
The INA111 uses a current-feedback topology provid-
ing extended bandwidth (2MHz at G = 10) and fast
settling time (4µs to 0.01% at G = 100). A single
external resistor sets any gain from 1 to over 1000.
Offset voltage and drift are laser trimmed for excellent
DC accuracy. The INA111’s FET inputs reduce input
bias current to under 20pA, simplifying input filtering
and limiting circuitry.
The INA111 is available in 8-pin plastic DIP, and
SOL-16 surface-mount packages, specified for the
–40°C to +85°C temperature range.
APPLICATIONS
q
MEDICAL INSTRUMENTATION
q
DATA ACQUISITION
V+
7 (13)
–
V
IN
INA111
2
(4)
1
(2)
R
G
8
(15)
+
V
IN
3
(5)
A
2
10kΩ
10kΩ
25kΩ
5
(10)
Ref
25kΩ
A
3
6
(11)
Feedback
A
1
10kΩ
10kΩ
(12)
DIP Connected
Internally
V
O
G=1+
50kΩ
R
G
4 (7)
DIP
V–
(SOIC)
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
Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
®
©
1992 Burr-Brown Corporation
PDS-1143E
1
Printed in U.S.A. March, 1998
INA111
SBOS015
BURR-BROWN [ BURR-BROWN CORPORATION ]
