INA2128.pdf 데이터시트 (총 10 페이지) - 파일 다운로드 INA2128 데이타시트 다운로드

No Preview Available !

® INA2128
INA2128
INA2128
Dual, Low Power
INSTRUMENTATION AMPLIFIER
FEATURES
q LOW OFFSET VOLTAGE: 50µV max
q LOW DRIFT: 0.5µV/°C max
q LOW INPUT BIAS CURRENT: 5nA max
q HIGH CMR: 120dB min
q INPUTS PROTECTED TO ±40V
q WIDE SUPPLY RANGE: ±2.25V to ±18V
q LOW QUIESCENT CURRENT: 700µA / IA
q 16-PIN PLASTIC DIP, SOL-16
APPLICATIONS
q SENSOR AMPLIFIER
THERMOCOUPLE, RTD, BRIDGE
q MEDICAL INSTRUMENTATION
q MULTIPLE-CHANNEL SYSTEMS
q BATTERY OPERATED EQUIPMENT
VIN–A
1 Over-Voltage
Protection
3
RGA
4
VIN+A
2 Over-Voltage
Protection
A1A
25k
25k
A2A
DESCRIPTION
The INA2128 is a dual, low power, general purpose
instrumentation amplifier offering excellent accuracy.
Its versatile 3-op amp design and small size make it
ideal for a wide range of applications. Current-feedback
input circuitry provides wide bandwidth even at high
gain (200kHz at G = 100).
A single external resistor sets any gain from 1 to 10,000.
Internal input protection can withstand up to ±40V
without damage.
The INA2128 is laser trimmed for very low offset
voltage (50µV), drift (0.5µV/°C) and high common-
mode rejection (120dB at G 100). It operates with
power supplies as low as ±2.25V, and quiescent current
is only 700µA per IA—ideal for battery operated and
multiple-channel systems.
The INA2128 is available in 16-pin plastic DIP, and
SOL-16 surface-mount packages, specified for the
–40°C to +85°C temperature range.
V+
9
INA2128
40k
40k
7
GA = 1 +
50k
RGA
A3A 6 VOA
40k
40k
5 RefA
VIN–B
16
Over-Voltage
Protection
14
RGB
13
VIN+B
15
Over-Voltage
Protection
A1B
25k
25k
A2B
40k
40k
40k
A3B
40k
10
GB
=
1
+
50k
RGB
11 VOB
12 RefB
8
V–
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-1243C
Printed in U.S.A. January, 1996

No Preview Available !

SPECIFICATIONS
At TA = +25°C, VS = ±15V, RL = 10kΩ, unless otherwise noted.
INA2128P, U
INA2128PA, UA
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
INPUT
Offset Voltage, RTI
Initial
vs Temperature
vs Power Supply
Long-Term Stability
TA = +25°C
TA = TMIN to TMAX
VS = ±2.25V to ±18V
±10 ±100/G
±0.2 ± 2/G
±0.2 ±20/G
±0.1 ±3/G
±50 ±500/G
±0.5 ± 20/G
±1 ±100/G
±25 ±100/G ±125 ±1000/G
±0.2 ± 5/G ±1 ± 20/G
T ±2 ±200/G
T
µV
µV/°C
µV/V
µV/mo
Impedance, Differential
1010 || 2
T || pF
Common-Mode
1011 || 9
T || pF
Common-Mode Voltage Range(1)
VO = 0V
(V+) – 2
(V–) + 2
(V+) – 1.4
(V–) + 1.7
TT
TT
V
V
Safe Input Voltage
±40 T V
Common-Mode Rejection
VCM = ±13V, RS = 1k
G=1
80
86
73 T
dB
G=10
100 106
93 T
dB
G=100
120 125
110 T
dB
G=1000
120 130
110 T
dB
BIAS CURRENT
vs Temperature
Offset Current
vs Temperature
±2 ±5
±30
±1 ±5
±30
T ±10 nA
T pA/°C
T ±10 nA
T pA/°C
NOISE VOLTAGE, RTI
f = 10Hz
f = 100Hz
f = 1kHz
fB = 0.1Hz to 10Hz
Noise Current
f=10Hz
f=1kHz
fB = 0.1Hz to 10Hz
GAIN
Gain Equation
Range of Gain
Gain Error
Gain vs Temperature(2)
50kResistance(2, 3)
Nonlinearity
G = 1000, RS = 0
G=1
G=10
G=100
G=1000
G=1
VO = ±13.6V, G=1
G=10
G=100
G=1000
10
8
8
0.2
0.9
0.3
30
1 + (50k/RG)
1 10000
±0.01
±0.024
±0.02
±0.4
±0.05
±0.5
±0.5
±1
±1 ±10
±25 ±100
±0.0001
±0.001
±0.0003
±0.002
±0.0005
±0.002
±0.001
(Note 4)
T
T nV/Hz
T nV/Hz
T nV/Hz
T µVp-p
T pA/Hz
T pA/Hz
T pAp-p
T V/V
T V/V
T ±0.1 %
T ±0.5 %
T ±0.7 %
T ±2 %
T T ppm/°C
T T ppm/°C
T
±0.002
% of FSR
T
±0.004
% of FSR
T
±0.004
% of FSR
T T % of FSR
OUTPUT
Voltage: Positive
Negative
Load Capacitance Stability
Short-Circuit Current
RL = 10k
RL = 10k
(V+) – 1.4
(V–) + 1.4
(V+) – 0.9
(V–) + 0.8
1000
+6/–15
TT
TT
T
T
V
V
pF
mA
FREQUENCY RESPONSE
Bandwidth, –3dB
Slew Rate
Settling Time, 0.01%
Overload Recovery
G=1
G=10
G=100
G=1000
VO = ±10V, G=10
G=1
G=10
G=100
G=1000
50% Overdrive
POWER SUPPLY
Voltage Range
Current, Total
TEMPERATURE RANGE
Specification
Operating
θJA
VIN = 0V
T Specification same as INA2128P, U.
±2.25
–40
–40
1.3
700
200
20
4
7
7
9
80
4
±15
±1.4
80
±18
±1.5
85
125
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
MHz
kHz
kHz
kHz
V/µs
µs
µs
µs
µs
µs
TV
T mA
T °C
T °C
°C/W
NOTE: (1) Input common-mode range varies with output voltage—see typical curves. (2) Guaranteed by wafer test. (3) Temperature coefficient of the “50k” term in
the gain equation. (4) Nonlinearity measurements in G = 1000 are dominated by noise. Typical nonlinearity is ±0.001%.
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.
®
INA2128
2

No Preview Available !

PIN CONFIGURATION
Top View
VI–NA 1
VI+NA 2
RGA 3
RGA 4
RefA 5
VOA 6
SenseA 7
V– 8
16 VI–NB
15 VI+NB
14 RGB
13 RGB
12 RefB
11 VOB
10 SenseB
9 V+
DIP
SOL-16
ABSOLUTE MAXIMUM RATINGS
Supply Voltage .................................................................................. ±18V
Analog 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.
ORDERING INFORMATION
PRODUCT
INA2128PA
INA2128P
INA2128UA
INA2128U
PACKAGE
16-Pin Plastic DIP
16-Pin Plastic DIP
SOL-16 Surface-Mount
SOL-16 Surface-Mount
PACKAGE
DRAWING
NUMBER(1)
180
180
211
211
TEMPERATURE
RANGE
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix C of Burr-Brown IC Data Book.
®
3 INA2128

No Preview Available !

TYPICAL PERFORMANCE CURVES
At TA = +25°C, VS = ±15V, unless otherwise noted.
60
G = 1000V/V
50
GAIN vs FREQUENCY
40
G = 100V/V
30
20
G = 10V/V
10
0
G = 1V/V
–10
–20
1k
10k 100k 1M
Frequency (Hz)
10M
COMMON-MODE REJECTION vs FREQUENCY
140 G = 1000V/V
G = 100V/V
120
G = 10V/V
100
G = 1V/V
80
60
40
20
0
10
100
1k
10k 100k
1M
Frequency (Hz)
140
120
100
80
60
40
20
0
10
POSITIVE POWER SUPPLY REJECTION
vs FREQUENCY
G = 1000V/V
G = 100V/V
G = 10V/V
G = 1V/V
100 1k
10k 100k 1M
Frequency (Hz)
140
120
100
80
60
40
20
0
10
NEGATIVE POWER SUPPLY REJECTION
vs FREQUENCY
G = 1000V/V
G = 100V/V
G = 10V/V
G = 1V/V
100 1k 10k 100k 1M
Frequency (Hz)
INPUT COMMON-MODE RANGE
vs OUTPUT VOLTAGE, VS = ±15V
15
G 10
G 10
10
G=1
G=1
5
+15V
0
VD/2
+
VO
–5
VD/2
++
VCM
–15V
Ref
–10
–15
–15
–10
–5
0
5 10 15
Output Voltage (V)
5
4
3
2
1
0
–1
–2
–3
–4
–5
–5
INPUT COMMON-MODE RANGE
vs OUTPUT VOLTAGE, VS = ±5, ±2.5V
G 10
G 10
G=1
G 10
G=1
G=1
VS = ±5V
VS = ±2.5V
–4 –3 –2 –1 0 1 2
Output Voltage (V)
34
5
®
INA2128
4

No Preview Available !

TYPICAL PERFORMANCE CURVES (CONT)
At TA = +25°C, VS = ±15V, unless otherwise noted.
CROSSTALK vs FREQUENCY
140
G = 1000V/V G = 100V/V
120
G = 10V/V
100
G = 1V/V
80
G = 1000V/V
G = 100V/V
60
40
20
0
10 100
1k
10k 100k
1M
Frequency (Hz)
INPUT- REFERRED NOISE vs FREQUENCY
1k
100
G = 1V/V
100 10
10
1
1
G = 10V/V
G = 100, 1000V/V
1
Current Noise
10 100 1k
Frequency (Hz)
0.1
10k
100
10
1
1
SETTLING TIME vs GAIN
0.01%
0.1%
10 100
Gain (V/V)
1000
QUIESCENT CURRENT and SLEW RATE
vs TEMPERATURE
1.7 6
1.6 5
1.5
Slew Rate
4
1.4 3
IQ
1.3 2
1.2
–75 –50 –25
0 25 50
Temperature (°C)
1
75 100 125
INPUT OVER-VOLTAGE V/I CHARACTERISTICS
5
4
3 Flat region represents
2 normal linear operation.
1
0
G = 1000V/V
G = 1V/V
–1 G = 1V/V
–2
–3
–4 G = 1000V/V
–5
–50 –40 –30 –20 –10
+15V
1/2
INA2128
VIN
IIN –15V
0 10 20 30 40
50
Input Voltage (V)
10
8
6
4
2
0
–2
–4
–6
–8
–10
0
OFFSET VOLTAGE WARM-UP
10 20 30 40 50
Time (ms)
®
5 INA2128