Datasheet INA2143UA-2K5, INA2143UA, INA2143U-2K5, INA2143U, INA143UA-2K5 Datasheet (Burr Brown)
...Page 1
©1999 Burr-Brown Corporation PDS-1531A Printed in U.S.A. June, 1999
®
FEATURES
● DESIGNED FOR LOW COST
● G = 10V/V or G = 0.1V/V
● SINGLE, DUAL VERSIONS
● LOW OFFSET VOLTAGE:
±250µV max, ±3µV/°C max
● LOW GAIN ERROR: 0.01%
● HIGH SLEW RATE: 5V/µs
● FAST SETTLING TIME: 9µs to 0.01%
● LOW QUIESCENT CURRENT: 950µA
● WIDE SUPPLY RANGE: ±2.25V to ±18V
● SO-8 and SO-14 PACKAGES
APPLICATIONS
● DIFFERENTIAL INPUT AMPLIFIER
BUILDING BLOCK
● DIFF IN/DIFF OUT AMPLIFIER
● GAIN = –10 INVERTING AMPLIFIER
● GAIN = +10 NON-INVERTING AMPLIFIER
● GAIN = +11 NON-INVERTING AMPLIFIER
● SYNCHRONOUS DEMODULATOR
● CURRENT/DIFFERENTIAL LINE RECEIVER
● VOLTAGE-CONTROLLED CURRENT SOURCE
● BATTERY POWERED SYSTEMS
● LOW COST AUTOMOTIVE
DESCRIPTION
The INA143 and INA2143 are high slew rate, gain of
10V/V or 0.1V/V difference amplifiers consisting of a
precision op amp with a precision resistor network. The
on-chip resistors are laser trimmed for accurate gain and
high common-mode rejection. Excellent TCR tracking
of the resistor maintains gain accuracy and commonmode rejection over temperature. They operate over a
wide supply range, ±2.25V to ±18V (+4.5V to +36V
single supply), and input common-mode voltage range
extends beyond the positive and negative supply rails.
INA143
INA2143
High-Speed, Precision, G = 10 or G = 0.1
DIFFERENCE AMPLIFIERS
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/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
The differential amplifier is the foundation of many
commonly used circuits. The low cost INA143 and
INA2143 provide this precision circuit function without
using an expensive precision network.
The single version, INA143, package is the SO-8 surface
mount. The dual version, INA2143, package is the SO-14
surface mount. Both are specified for operation over the
extended industrial temperature range, –40°C to +85°C.
Operation is from –55°C to +125°C.
10kΩ 100kΩ
Sense
INA143
Output
V+
Ref
–In
+In
5
6
1
2
7
V–
4
3
10kΩ 100kΩ
Sense A
INA2143
Out A
V+
Ref A
–In A
+In A
12
13
14
2
11
V–
4
3
10kΩ 100kΩ
10kΩ 100kΩ
10kΩ 100kΩ
10kΩ 100kΩ
B
A
Sense B
Out B
Ref B
–In B
+In B
10
9
8
6
5
INA143
IN
A
2143
For most current data sheet and other product
information, visit www.burr-brown.com
Page 2
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INA143, INA2143
INA143U INA143UA
INA2143U INA2143UA
SPECIFICATIONS: VS = ±15V
At TA = +25°C, VS = ±15V, G = 10, RL = 10kΩ connected to ground, and reference pin connected to ground, unless otherwise noted.
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.
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
OFFSET VOLTAGE
(1)
RTI
Initial
(1)
VCM = 0V ±100 ±250 ✻ ±500 µV
vs Temperature ±1 ±3 See Typical Curve µV/°C
vs Power Supply V
S
= ±2.25V to ±18V ±5 ±20 ✻ ±30 µV/V
vs Time 0.2 ✻ µV/√mo
Channel Separation (dual) dc 140 dB
INPUT IMPEDANCE
(3)
Differential 20 ✻ kΩ
Common-Mode 55 ✻ kΩ
INPUT VOLTAGE RANGE RTI
Common-Mode Voltage Range
Positive VO = 0V
1.1 [(V+) – 1.5] 1.1[(V+ )–1]
✻✻ V
Negative V
O
= 0V
1.1[(V–) + 1.5] 1.1[(V–)+ 1]
✻✻ V
Common-Mode Rejection Ratio
VCM = –14.85V to 14.85V, RS = 0Ω
86 96 80 ✻ dB
OUTPUT VOLTAGE NOISE
(3)
RTI
f = 0.1Hz to 10Hz 1 ✻ µVp-p
f = 10Hz 45 ✻ nV/√Hz
f = 100Hz 30 ✻ nV/√Hz
f = 1kHz 27 ✻ nV/√Hz
GAIN
Initial 10 ✻ V/V
Error V
O
= –14V to +13.5V ±0.01 ±0.05 ✻ ±0.1 %
vs Temperature ±1 ±10 ✻✻ppm/°C
Nonlinearity V
O
= –14V to +13.5V ±0.0001 ±0.001 ✻ ±0.002 % of FS
OUTPUT
Voltage Output Gain Error < 0.1%
Positive R
L
= 10kΩ to Ground (V+) –1.5 (V+) –1.3 ✻✻ V
Negative R
L
= 10kΩ to Ground (V–) +1 (V–) +0.8 ✻✻ V
Positive R
L
= 100kΩ to Ground (V+) –0.8 ✻ V
Negative R
L
= 100kΩ to Ground (V–) +0.3 ✻ V
Current Limit Continuous-to-Common –25, +32 ✻ mA
Capacitive Load (stable operation) 1000 ✻ pF
FREQUENCY RESPONSE
Small-Signal Bandwidth –3dB 0.15 ✻ MHz
Slew Rate 5 ✻ V/µs
Settling Time: 0.1% V
O
= 10V Step, CL = 100pF 6 ✻ µs
0.01% V
O
= 10V Step, CL = 100pF 9 ✻ µs
Overload Recovery Time 50% Overdrive 6 ✻ µs
POWER SUPPLY
Rated Voltage ±15 ✻ V
Operating Voltage Range
Dual Supplies ±2.25 ±18 ✻✻V
Single Supply +4.5 +36 ✻✻V
Quiescent Current (per amplifier) I
O
= 0 ±0.95 ±1.2 ✻✻mA
TEMPERATURE RANGE
Specification –40 +85 ✻✻°C
Operation –55 +125 ✻✻°C
Storage –55 +125 ✻✻°C
Thermal Resistance
θ
JA
SO-8 Surface Mount 150 ✻ °C/W
SO-14 Surface Mount 100 ✻ °C/W
✻ Specifications the same as INA143U, INA2143U.
NOTES: (1) Includes the effects of amplifier’s input bias and offset currents. (2) Internal resistors are ratio matched but have ±20% absolute value. (3) Includes
effects of amplifier’s input current noise and thermal noise contribution of resistor network.
Page 3
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®
INA143, INA2143
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
OFFSET VOLTAGE
(1)
RTI
Initial
(1)
VCM = 0V ±200 ±500 ✻ ±750 µV
vs Temperature ±1 ✻ µV/°C
INPUT VOLTAGE RANGE RTI
Common-Mode Voltage Range
Positive VO = 0V
1.1 [(V+) – 1.5] 1.1[(V+ )–1]
✻✻ V
Negative V
O
= 0V
1.1[(V–) + 1.5] 1.1[(V–) + 1]
✻✻ V
Common-Mode Rejection Ratio
VCM = –3.85V to +3.85V, RS = 0Ω
86 96 80 ✻ dB
GAIN
Initial 10 ✻ V/V
Gain Error V
O
= –4V to +3.5V ±0.01 ±0.05 ✻ ±0.1 %
Nonlinearity V
O
= –4V to +3.5V ±0.0001 ±0.001 ✻ ±0.002 % of FS
OUTPUT
Voltage Output Gain Error < 0.1%
Positive R
L
= 10kΩ to Ground (V+) –1.5 (V+)–1.3 ✻✻ V
Negative R
L
= 10kΩ to Ground (V–) +1 (V–)+0.8 ✻✻ V
Positive R
L
= 100kΩ to Ground (V+)–0.8 ✻ V
Negative R
L
= 100kΩ to Ground (V–)+0.3 ✻ V
POWER SUPPLY
Rated Voltage +5 ✻ V
Operating Voltage Range
Dual Supplies ±2.25 ±18 ✻✻V
Single Supply +4.5 +36 ✻✻V
Quiescent Current (per amplifier) I
O
= 0 ±0.92 ±1.2 ✻✻mA
✻ Specifications the same as INA143U, INA2143U.
NOTES: (1) Includes the effects of amplifier’s input bias and offset currents.
INA143U INA143UA
INA2143U INA2143UA
SPECIFICATIONS: VS = ±5V
At TA = +25°C, VS = ±5V, G = 10, RL = 10kΩ connected to ground, and reference pin connected to ground, unless otherwise noted.
Supply Voltage, V+ to V– .................................................................... 36V
Input Signal (G = 10), Voltage ..................................................... 1.1 • V
S
Current ........................................................ 0.5mA
Input Signal (G = 0.1), Voltage ..................................................... 11 • V
S
Current ....................................................... 0.5mA
Output Short-Circuit (to ground)
(2)
.......................................... Continuous
Operating Temperature .................................................. –55 °C to +125°C
Storage Temperature ..................................................... –55°C to +125°C
Junction Temperature .................................................................... +150°C
Lead Temperature (soldering, 10s) ............................................... +300°C
NOTES: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may degrade
device reliability. (2) One channel per package.
ABSOLUTE MAXIMUM RATINGS
(1)
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 SPECIFIED
DRAWING TEMPERATURE PACKAGE ORDERING TRANSPORT
PRODUCT PACKAGE NUMBER
(1)
RANGE MARKING NUMBER
(2)
MEDIA
Single
INA143U SO-8 Surface Mount 182 –40°C to +85°C INA143U INA143U Rails
"""""INA143U/2K5 Tape and Reel
INA143UA SO-8 Surface Mount 182 –40°C to +85°C INA143UA INA143UA Rails
"""""INA143UA/2K5 Tape and Reel
Dual
INA2143U SO-14 Surface Mount 235 –40°C to +85°C INA2143U INA2143U Rails
"""""INA2143U/2K5 Tape and Reel
INA2143UA SO-14 Surface Mount 235 –40°C to +85°C INA2143UA INA2143UA Rails
"""""INA2143UA/2K5 Tape and Reel
NOTES: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. (2) Models with a slash (/ ) are
available only in Tape and Reel in the quantities indicated (e.g., /2K5 indicates 2500 devices per reel). Ordering 2500 pieces of “INA143UA/2K5” will get a single
2500-piece Tape and Reel. For detailed Tape and Reel mechanical information, refer to Appendix B of Burr-Brown IC Data Book.
PACKAGE/ORDERING INFORMATION
Page 4
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INA143, INA2143
PIN CONFIGURATIONS
Top View SO-8 Top View SO-14
Ref
–In
+In
V–
NC
V+
Output
Sense
NC = No Connection
INA143
1
2
3
4
8
7
6
5
NC
–In A
+In A
V–
+In B
–In B
NC
Ref A
Out A
Sense A
V+
Sense B
Out B
Ref B
NC = No Connection
1
2
3
4
5
6
7
14
13
12
11
10
9
8
A
B
INA2143
Page 5
5
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INA143, INA2143
TYPICAL PERFORMANCE CURVES
At TA = +25°C, VS = ±15V, G = 10, RL = 10kΩ connected to ground, and reference pin connected to ground, unless otherwise noted.
GAIN vs FREQUENCY
Frequency (Hz)
Closed-Loop Gain (dB)
10k 100k 1M
5
0
–5
–10
–15
–20
VS = ±15V or ±5V
COMMON-MODE REJECTION vs FREQUENCY
Frequency (Hz)
Closed-Mode Rejection (dB)
100 10k 100k1k 1M
100
90
80
70
60
50
40
VS = ±15V or ±5V
POWER SUPPLY REJECTION vs FREQUENCY
Frequency (Hz)
Power Supply Rejection (dB)
1 100 1k 10k10 100k
120
100
80
60
40
20
–PSRR
+PSRR
MAXIMUM OUTPUT VOLTAGE vs FREQUENCY
Frequency (Hz)
Peak-to-Peak Output Voltage (V)
10k 100k 1M
32
28
24
20
16
12
8
4
0
VS = ±15V
VS = ±5V
INPUT COMMON-MODE VOLTAGE
vs OUTPUT VOLTAGE
Output Voltage (V)
Common-Mode Voltage (V)
–15 0 5 10–5–10 15
20
15
10
5
0
–5
–10
–15
–20
VS = ±5V
VS = ±15V
TOTAL HARMONIC DISTORTION+NOISE
vs FREQUENCY
Frequency (Hz)
THD+N (%)
20 1k 10k100 20k
0.1
0.01
0.001
500kHz Filter
Page 6
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INA143, INA2143
TYPICAL PERFORMANCE CURVES (CONT)
At TA = +25°C, VS = ±15V, G = 10, RL = 10kΩ connected to ground, and reference pin connected to ground, unless otherwise noted.
VOLTAGE NOISE DENSITY vs FREQUENCY
Frequency (Hz)
Voltage Noise (nV/√Hz)
1 100 1k10 10k
100
10
QUIESCENT CURRENT vs TEMPERATURE
Temperature (°C)
Quiescent Current (µA)
–75 –50 –25 25 50 75 1000 125
1400
1300
1200
1100
1000
900
800
700
Per Amplifier
SLEW RATE vs TEMPERATURE
Temperature (°C)
Slew Rate (V/µs)
–75 –50 –25 25 50 75 1000 125
7
6
5
4
3
–SR
+SR
VS = ±15V
V
S
= ±5V
SHORT-CIRCUIT CURRENT vs TEMPERATURE
Temperature (°C)
Short-Circuit |mA|
–75 –50 –25 25 50 75 1000 125
40
35
30
25
20
15
+I
SC
+I
SC
–I
SC
–I
SC
VS = ±15V
V
S
= ±5V
OUTPUT VOLTAGE SWING vs OUTPUT CURRENT
Output Current (mA)
Output Voltage (V)
0 ±15 ±20 ±25 ±30±10±5 ±35
–40°C
25°C
85°C
85°C
25°C
–40°C
V+
(V+) –5
(V+) –10
0
(V–) +10
(V–) +5
(V–)
0.1Hz TO 10Hz PEAK-TO-PEAK
VOLTAGE NOISE
500µs/div
0.5µV/div
Page 7
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INA143, INA2143
TYPICAL PERFORMANCE CURVES (CONT)
At TA = +25°C, VS = ±15V, G = 10, RL = 10kΩ connected to ground, and reference pin connected to ground, unless otherwise noted.
OFFSET VOLTAGE PRODUCTION DISTRIBUTION
V
S
= ±15V
Percent of Units (%)
Offset Voltage (µV)
30
25
20
15
10
5
0
–500
–450
–400
–350
–300
–250
–200
–150
–100
–50
0
50
100
150
200
250
300
350
400
450
500
Typical production
distribution of
packaged units.
Singles and duals
included.
OFFSET VOLTAGE PRODUCTION DISTRIBUTION
V
S
= ±5V
Percent of Units (%)
Offset Voltage (µV)
20
18
16
14
12
10
8
6
4
2
0
–700
–600
–500
–400
–300
–200
–100
0
100
200
300
400
500
600
700
Typical production
distribution of
packaged units.
Singles and duals
included.
OFFSET VOLTAGE DRIFT
PRODUCTION DISTRIBUTION
V
S
= ±15V
Percent of Units (%)
Offset Voltage Drift (µV/°C)
60
50
40
30
20
10
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6
Typical production
distribution of
packaged units.
Singles and duals
included.
OFFSET VOLTAGE DRIFT
PRODUCTION DISTRIBUTION
V
S
= ±5V
Percent of Units (%)
Offset Voltage Drift (µV/°C)
60
50
40
30
20
10
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6
Typical production
distribution of
packaged units.
Singles and duals
included.
SETTLING TIME vs CAPACITIVE LOAD
Settling Time (µs)
Capacitive Load (pF)
20
15
10
5
0
0 500 1000 1500
0.01%, VS = ±15V
0.01%, VS = ±15V
G = 10
G = 0.1
0.1%, V
S
= ±15V
0.01%, VS = ±5V
CHANNEL SEPARATION vs FREQUENCY
Channel Separation (dB)
Frequency (Hz)
150
140
130
120
110
100 1k 10k 100k
INA2143
Page 8
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INA143, INA2143
TYPICAL PERFORMANCE CURVES (CONT)
At TA = +25°C, VS = ±15V, G = 10, RL = 10kΩ connected to ground, and reference pin connected to ground, unless otherwise noted.
SMALL-SIGNAL STEP RESPONSE
2.5µs/div
100mV/div
CL = 100pF
CL = 1500pF
LARGE-SIGNAL STEP RESPONSE
25µs/div
5V/div
CL = 500pF
Page 9
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INA143, INA2143
APPLICATIONS INFORMATION
The INA143 and INA2143 are high-speed difference amplifiers suitable for a wide range of general-purpose applications. Figure 1 shows the basic G = 10 configuration. The
input and feedback resistors can be reversed to achieve
G = 0.1, as shown in Figure 2. For applications requiring
G = 1, the INA133 and INA2133 are recommended.
Decoupling capacitors are strongly recommended for applications with noisy or high impedance power supplies. The
capacitors should be placed close to the device pins as
shown in Figure 1. All circuitry is completely independent
in the dual version assuring lowest crosstalk and normal
behavior when one amplifier is overdriven or short-circuited.
As shown in Figure 1, the differential input signal is connected to pins 2 and 3. The source impedances connected to
the inputs must be nearly equal to assure good commonmode rejection. A 5Ω mismatch in source impedance will
degrade the common-mode rejection of a typical device to
approximately 86dB (RTI). If the source has a known
impedance mismatch, an additional resistor in series with
the opposite input can be used to preserve good commonmode rejection.
The INA143’s internal resistors are accurately ratio trimmed
to match. That is, R1/R2 and R3/R4 are trimmed to equal 0.1.
However, the absolute values may not be equal (R1 + R2 may
be slightly different than R3 + R4). Thus, large series resistors
on the input (greater than 100Ω), even if well matched, will
degrade common-mode rejection.
V
3
5
6
1
3
INA143
V
O
= 10 (V3 – V2)
2
R
3
10kΩ
R
4
100kΩ
R
1
10kΩ
R
2
100kΩ
V
2
–In
+In
1µF
V–
4
1µF
V+
7
FIGURE 1. G = 10 Basic Power Supply and Signal Connections.
OPERATING VOLTAGE
The INA143 and INA2143 operate from single (+4.5V to
+36V) or dual (±2.25V to ±18V) supplies with excellent
performance. Specifications are production tested with ±5V
and ±15V supplies. Most behavior remains unchanged
throughout the full operating voltage range. Parameters which
vary significantly with operating voltage are shown in the
Typical Performance Curves.
OFFSET VOLTAGE TRIM
The INA143 and INA2143 are laser trimmed for low offset
voltage and drift. Most applications require no external offset
adjustment. Figure 3 shows an optional circuit for trimming
the output offset voltage. The output is referred to the output
reference terminal (pin 1), which is normally grounded. A
voltage applied to the Ref terminal will be summed with the
output signal. This can be used to null offset voltage as
shown in Figure 3. The source impedance of a signal applied
to the Ref terminal should be less than 10Ω to maintain good
common-mode rejection.
V
3
2
6
3
1
INA143
V
O
= 0.1 (V3 – V2)
5
R
4
100kΩ
R
3
10kΩ
R
2
100kΩ
R
1
10kΩ
V
2
–In
+In
FIGURE 2. G = 0.1 Difference Amplifier.
FIGURE 3. Offset Adjustment.
V
3
5
6
3
V
O
INA143
V
O
= 10 (V3 – V2)
Offset Adjustment
Range = ±3mV
Compensates
for impedance at
pin 1—see text.
G = 10
2
R
4
100kΩ
V
2
10Ω
499kΩ
100Ω
100kΩ
+15V
–15V
1
R
3
10kΩ
R
1
10kΩ
R
2
100kΩ
Page 10
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INA143, INA2143
SIMILAR COMPLETE
A
1
, A
2
FEATURE BURR-BROWN IA
OPA2227 Low Noise INA103
OPA129 Ultra Low Bias Current (fA) INA116
OPA2277 Low Offset Drift, Low Noise INA114, INA128
OPA2130 Low Power, FET-Input (pA) INA121
OPA2234 Single Supply, Precision, Low Power INA122, INA118
OPA2237 Single Supply, Low Power, MSOP-8 INA122, INA126
The INA143 can be combined with op amps to form a complete instrumentation amplifier with specialized performance characteristics. Burr-Brown offers
many complete high performance IAs. Products with related performances
are shown at the right in the table below.
FIGURE 9. Precision G = 11 Buffer.
FIGURE 4. Difference Amplifier with Gain and CMR Adjust.
FIGURE 5. Precision G = –10 Inverting Amplifier.
This circuit follows an 11/1 divider with a gain of 11 for an overall gain of unity.
With an 11/1 divider, the input signal can exceed 55V without damage as
long as input current is less than 0.5mA.
FIGURE 6. Voltage Follower with Input Protection.
FIGURE 7. Precision Instrumentation Amplifier.
FIGURE 8. Precision Summing Amplifier.
10Ω
10Ω 10kΩ 100kΩ
10kΩ 100kΩ
200Ω
200Ω
V
1
V
2
2
3
5
1
6
V
O
Gain
Adjust
CMR
Adjust
INA143
To eliminate adjustment interactions,
first adjust gain with V
2
grounded.
V
2
25
6
INA143
3
VO = –10 • V
2
1
Gain Error = 0.05% maximum
Nonlinearity = 0.001% maximum
Gain Drift = 1ppm/°C
10kΩ 100kΩ
10kΩ 100kΩ
25
6
INA143
3
R
3
10kΩ
V
O
= V
IN
V
IN
R
1
10kΩ
R
4
100kΩ
1
R
2
100kΩ
±55V
Without
Damage
V
1
–In
2
3
5
10kΩ 100kΩ
10kΩ 100kΩ
1
6
INA143
V
0
= 10 (1 + 2R2 /R1) (V2 – V1)
A
2
A
1
V
2
+In
R
1
R
2
V
O
R
2
25
6
INA143
V
1
R
1
10kΩ
R
4
100kΩ
1
R
2
100kΩ
R
3
10kΩ
3
V
3
VO = V1 + 10 • V
3
10kΩ 100kΩ
5
6
INA143
V
O
= 11 • V
IN
1
2
100kΩ
10kΩ
V
IN
3
Gain Error =
0.05% maximum
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