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
NOTE: (1) Temperature coefficient of the “50kΩ” term in the gain equation.
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
®
INA111
2
PIN CONFIGURATIONS
Top View
DIP
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with ap-
propriate precautions. Failure to observe proper handling and
installation procedures can cause damage.
ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may
be more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.
ORDERING INFORMATION
PRODUCT
PACKAGE
8-Pin Plastic DIP
8-Pin Plastic DIP
SOL-16 Surface-Mount
SOL-16 Surface-Mount
TEMPERATURE RANGE
–40°C
–40°C
–40°C
–40°C
to
to
to
to
+85°C
+85°C
+85°C
+85°C
INA111AP
INA111BP
INA111AU
INA111BU
R
G
V
–IN
V
+IN
V–
1
2
3
4
8
7
6
5
R
G
V+
V
O
Ref
Top View
NC
R
G
NC
V
–
IN
SOL-16 Surface Mount
1
2
3
4
5
6
7
8
16 NC
15 R
G
14 NC
13 V+
12 Feedback
11 V
O
10 Ref
9
NC
V
+IN
NC
V–
NC
PACKAGE INFORMATION
PRODUCT
INA111AP
INA111BP
INA111AU
INA111BU
PACKAGE
8-Pin Plastic
8-Pin Plastic
16-Pin Surface
16-Pin Surface
DIP
DIP
Mount
Mount
PACKAGE DRAWING
NUMBER
(1)
006
006
211
211
ABSOLUTE MAXIMUM RATINGS
(1)
Supply Voltage ..................................................................................
±18V
Input Voltage Range .......................................... (V–) –0.7V to (V+) +15V
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