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PDF INA116P Data sheet ( Hoja de datos )

Número de pieza INA116P
Descripción Ultra Low Input Bias Current INSTRUMENTATION AMPLIFIER
Fabricantes Burr-Brown Corporation 
Logotipo Burr-Brown Corporation Logotipo



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®
INA116
INA116
INA116
Ultra Low Input Bias Current
INSTRUMENTATION AMPLIFIER
FEATURES
q LOW INPUT BIAS CURRENT: 3fA typ
q BUFFERED GUARD DRIVE PINS
q LOW OFFSET VOLTAGE: 2mV max
q HIGH COMMON-MODE REJECTION:
84dB (G = 10)
q LOW QUIESCENT CURRENT: 1mA
q INPUT OVER-VOLTAGE PROTECTION: ±40V
APPLICATIONS
q LABORATORY INSTRUMENTATION
q pH MEASUREMENT
q ION–SPECIFIC PROBES
q LEAKAGE CURRENT MEASUREMENT
DESCRIPTION
The INA116 is a complete monolithic FET-input instru-
mentation amplifier with extremely low input bias
current. Difet ® inputs and special guarding techniques
yield input bias currents of 3fA at 25°C, and only 25fA
at 85°C. Its 3-op amp topology allows gains to be set
from 1 to 1000 by connecting a single external resistor.
Guard pins adjacent to both input connections can be
used to drive circuit board and input cable guards to
maintain extremely low input bias current.
The INA116 is available in 16-pin plastic DIP and SOL-16
surface-mount packages, specified for the –40°C to +85°C
temperature range.
Guard
VIN
Guard
2
3 Over-Voltage
Protection +1
4
1
RG
16
Guard
+
VIN
Guard
5
6 Over-Voltage
Protection +1
7
Difet®; Burr-Brown Corporation
V+
13
A1
25k
60k
25k
A2
60k
8
V–
INA116
60k
G = 1 + 50k
RG
A3 11 VO
60k
Ref
9
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
©1994 Burr-Brown Corporation
PDS-1242B
Printed in U.S.A. May, 1995

1 page




INA116P pdf
TYPICAL PERFORMANCE CURVES (CONT)
At TA = +25°C, VS = ±15V, RL = 10kΩ, unless otherwise noted.
INPUT COMMON-MODE RANGE
vs OUTPUT VOLTAGE
15
G 10
G 10
10
G=1
G=1
5 +15V
0
VD/2
VD/2
+
+
INA116 VO
Ref
–5
VCM –15V
G=1
G=1
–10
–15
–15
–10
–5
0
5 10 15
Output Voltage (V)
INPUT REFERRED NOISE vs FREQUENCY
10k
G = 1V/V
1k
100
G = 1000V/V
G = 10V/V
10
1
Bandwidth Limit
10 100 1k
Frequency (Hz)
10k
INPUT OVER-VOLTAGE V/I CHARACTERISTICS
4
3
2 G = 1V/V G = 1000V/V
1
0
–1 G = 1V/V
G = 1000V/V
–2
–3
–4
–40 –30 –20 –10
0
10 20 30 40
Input Voltage (V)
INPUT OFFSET VOLTAGE DRIFT
PRODUCTION DISTRIBUTION
G = 100
G = 10
40
26
19
7
0.5
6
0.5
24 38
20
9
2
5
11
G=1
0.5 2 3
9 12 15 17 18 14 4
4
–80 –60 –40 –20 0 20 40
Offset Voltage Drift (µV/°C)
0.5
60 80
15
10
5
0
–5
–10
–15
0
OFFSET VOLTAGE WARM-UP
G 10
G=1
G=1
G 10
5 10 15 20
Time After Power Supply Turn-On (s)
25
QUIESCENT CURRENT AND SLEW RATE
vs TEMPERATURE
1.6
1.4
IQ
1.2
1.4
1.2
1.0 1.0
0.8
SR
0.6
0.8
0.6
0.4
–75 –50 –25
0 25 50
Temperature (°C)
0.4
75 100 125
®
5 INA116

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