INA116.pdf 데이터시트 (총 9 페이지) - 파일 다운로드 INA116 데이타시트 다운로드

No Preview Available !

®
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

No Preview Available !

SPECIFICATIONS
AT TA = +25°C, VS = ±15V, RL = 10kΩ, unless otherwise noted.
INA116P, U
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
INPUT
Offset Voltage, RTI
Initial
vs Temperature
vs Power Supply
Long-Term Stability
Bias Current
vs Temperature
Offset Current
vs Temperature
Impedance, Differential
Common-Mode
Common-Mode Voltage Range
TA = +25°C
TA = TMIN to TMAX
VS = ±4.5V to ±18V
Safe Input Voltage
Common-Mode Rejection
NOISE
Voltage Noise, RTI
f = 1kHz
fB = 0.1Hz to 10Hz
Current Noise
f = 1kHz
GAIN
Gain Equation
Range of Gain
Gain Error
Gain vs Temperature(1)
50kResistance(1)(2)
Nonlinearity
VCM = ±11V, RS = 1k
G=1
G = 10
G = 100
VCM = ±5V, G = 1000
G = 1000, RS = 0
G=1
G = 10
G = 100
G = 1000
G=1
G=1
G = 10
G = 100
G = 1000
±0.5 ±0.5/G ±2 ±2/G
See Typical Curve
±10 ±15/G ±50 ±100/G
±1 ±5/G
±3 ±25
See Typical Curve
±1 ±25
See Typical Curve
>1015/0.2
>1015/7
(V+)–4
(V+)–2
(V–)+4
(V–)+2.4
±40
80 89
84 92
86 94
86 94
28
2
0.1
1+(50k/RG)
1 1000
±0.01
±0.05
±0.25
±0.4
±0.35
±0.5
±1.25
±5 ±10
±25 ±100
±0.0005
±0.005
±0.001
±0.005
±0.001
±0.005
±0.005
T
T
T
73
78
80
80
T
GUARD OUTPUTS
Offset Voltage
Output Impedance
Current Drive
±15
650
+2/–0.05
±50
OUTPUT
Voltage Positive
Negative
Load Capacitance Stability
Short-Circuit Current
RL = 10k
RL = 10k
(V+) –1
(V–) +0.35
(V+) –0.7
(V–) +0.2
1000
+5/–12
T
T
FREQUENCY RESPONSE
Bandwidth, –3dB
Slew Rate
Settling Time, 0.01%
Output Overload Recovery
G=1
G = 10
G = 100
G = 1000
G = 10 to 200
10V Step, G = 1
G = 10
G = 100
G = 1000
50% Overdrive
800
500
70
7
0.8
22
25
145
400
20
POWER SUPPLY
Voltage Range
Current
TEMPERATURE RANGE
Specification
Operating
θJA
VIN = 0V
±4.5
±15
±18
T
±1 ±1.4
–40
–40
80
85 T
125 T
T Specification same as INA116P
NOTE: (1) Guaranteed by wafer test. (2) Temperature coefficient of the “50k” term in the gain equation.
INA116PA, UA
TYP
MAX
UNITS
T ±5 ±5/G mV
T
T
±100 ±200/G
µV/V
T µV/mo
T ±100
T
fA
T ±100
fA
T
T Ω/pF
T /pF
TV
TV
V
T dB
T dB
T dB
T dB
T nV/Hz
T µVp-p
T fA/Hz
T V/V
T V/V
T 0.1
%
T ±0.5
%
T ±0.7
%
T%
T ±20 ppm/°C
T
±100
ppm/°C
T
±0.01
% of FSR
T
±0.01
% of FSR
T
±0.01
% of FSR
T % of FSR
T T mV
T
T mA
TV
TV
T pF
T mA
T kHz
T kHz
T kHz
T kHz
T V/µs
T µs
T µs
T µs
T µs
T µs
TT
V
T T mA
T °C
T °C
T °C/W
®
INA116
2

No Preview Available !

PIN CONFIGURATION
Top View
RG 1
Guard – 2
VI–N 3
Guard – 4
Guard + 5
VI+N 6
Guard + 7
V– 8
16 RG
15 NC
14 NC
13 V+
12 NC
11 VO
10 NC
9 Ref
NC: No Internal Connection.
DIP
SOL-16
ABSOLUTE MAXIMUM RATINGS
Supply Voltage .................................................................................. ±18V
Input Voltage Range .......................................................................... ±40V
Output Short-Circuit (to ground) .............................................. Continuous
Operating Temperature ................................................. –40°C to +125°C
Storage Temperature ..................................................... –40°C to +125°C
Junction Temperature .................................................................... +150°C
Lead Temperature (soldering, 10s) ............................................... +300°C
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate 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.
PACKAGE INFORMATION
PRODUCT
PACKAGE
PACKAGE DRAWING
NUMBER(1)
INA116PA
INA116P
INA116UA
INA116U
16-Pin Plastic DIP
16-Pin Plastic DIP
SOL-16 Surface-Mount
SOL-16 Surface-Mount
180
180
211
211
NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix C of Burr-Brown IC Data Book.
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.
®
3 INA116

No Preview Available !

TYPICAL PERFORMANCE CURVES
At TA = +25°C, VS = ±15V, RL = 10kΩ, unless otherwise noted.
60
G = 1000
50
GAIN vs FREQUENCY
40
G = 100
30
20
G = 10
10
0
G=1
–10
–20
1k
10k 100k 1M
Frequency (Hz)
10M
100
90
80
70
60
50
40
30
20
10
0
10
COMMON-MODE REJECTION vs FREQUENCY
G = 1000V/V
G = 100V/V
G = 10V/V
G = 1V/V
100 1k 10k
Frequency (Hz)
100k
120
100
80
60
40
20
0
1
POSITIVE POWER SUPPLY REJECTION
vs FREQUENCY
G = 1000V/V
G = 10V/V
G = 100V/V
G = 1V/V
10 100 1k 10k 100k
Frequency (Hz)
120
100
80
60
40
20
0
1
NEGATIVE POWER SUPPLY REJECTION
vs FREQUENCY
G = 1k
G = 10 < 100
G=1
10 100 1k 10k 100k
Frequency (Hz)
INPUT BIAS CURRENT vs INPUT VOLTAGE
15
10
5
0
–5
–10
–15
–15
–10
–5 0
5
Input Voltage (V)
10
15
1000
INPUT BIAS CURRENT vs TEMPERATURE
100
IB IOS
10
1
–75 –50 –25
0
Measurement Limit
25 50 75 100 125
®
INA116
4

No Preview Available !

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