©1994 Burr-Brown Corporation PDS-1243C Printed in U.S.A. January, 1996
FEATURES
●LOW OFFSET VOLTAGE: 50µV max
●LOW DRIFT: 0.5µV/°C max
●LOW INPUT BIAS CURRENT: 5nA max
●HIGH CMR: 120dB min
●INPUTS PROTECTED TO ±40V
●WIDE SUPPLY RANGE: ±2.25V to ±18V
●LOW QUIESCENT CURRENT: 700µA / IA
●16-PIN PLASTIC DIP, SOL-16
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.
APPLICATIONS
●SENSOR AMPLIFIER
THERMOCOUPLE, RTD, BRIDGE
●MEDICAL INSTRUMENTATION
●MULTIPLE-CHANNEL SYSTEMS
●BATTERY OPERATED EQUIPMENT
Dual, Low Power
INSTRUMENTATION AMPLIFIER
INA2128
A
1A
A
2A
A
3A
40kΩ40kΩ
40kΩ40kΩ
V
INA
1
3
4
2
16
14
13
15
7
6
5
10
11
12
V
INA
R
GA
V+
V–
INA2128
Ref
A
V
OA
G
A
= 1 + 50kΩ
R
GA
–
+
Over-Voltage
Protection
25kΩ
25kΩ
Over-Voltage
Protection
A
1B
A
2B
A
3B
40kΩ40kΩ
8
9
40kΩ40kΩ
V
INB
V
INB
R
GB
Ref
B
V
OB
G
B
= 1 + 50kΩ
R
GB
–
+
Over-Voltage
Protection
25kΩ
25kΩ
Over-Voltage
Protection
®
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
INA2128
INA2128
®
INA2128 2
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 TA = +25°C±10 ±100/G ±50 ±500/G ±25 ±100/G ±125 ±1000/G µV
vs Temperature TA = TMIN to TMAX ±0.2 ± 2/G ±0.5 ± 20/G ±0.2 ± 5/G ±1 ± 20/G µV/°C
vs Power Supply VS = ±2.25V to ±18V ±0.2 ±20/G ±1 ±100/G ✻±2 ±200/G µV/V
Long-Term Stability ±0.1 ±3/G ✻µV/mo
Impedance, Differential 1010 || 2 ✻Ω || pF
Common-Mode 1011 || 9 ✻Ω || pF
Common-Mode Voltage Range(1) VO = 0V (V+) – 2 (V+) – 1.4 ✻✻ V
(V–) + 2 (V–) + 1.7 ✻✻ V
Safe Input Voltage ±40 ✻V
Common-Mode Rejection VCM = ±13V, ∆RS = 1kΩ
G=1 80 86 73 ✻dB
G=10 100 106 93 ✻dB
G=100 120 125 110 ✻dB
G=1000 120 130 110 ✻dB
BIAS CURRENT ±2±5✻±10 nA
vs Temperature ±30 ✻pA/°C
Offset Current ±1±5✻±10 nA
vs Temperature ±30 ✻pA/°C
NOISE VOLTAGE, RTI G = 1000, RS = 0Ω
f = 10Hz 10 ✻nV/√Hz
f = 100Hz 8 ✻nV/√Hz
f = 1kHz 8 ✻nV/√Hz
fB = 0.1Hz to 10Hz 0.2 ✻µVp-p
Noise Current
f=10Hz 0.9 ✻pA/√Hz
f=1kHz 0.3 ✻pA/√Hz
fB = 0.1Hz to 10Hz 30 ✻pAp-p
GAIN
Gain Equation 1 + (50kΩ/RG)✻V/V
Range of Gain 1 10000 ✻✻V/V
Gain Error G=1 ±0.01 ±0.024 ✻±0.1 %
G=10 ±0.02 ±0.4 ✻±0.5 %
G=100 ±0.05 ±0.5 ✻±0.7 %
G=1000 ±0.5 ±1✻±2%
Gain vs Temperature(2) G=1 ±1±10 ✻✻ppm/°C
50kΩ Resistance(2, 3) ±25 ±100 ✻✻ppm/°C
Nonlinearity VO = ±13.6V, G=1 ±0.0001 ±0.001 ✻±0.002 % of FSR
G=10 ±0.0003 ±0.002 ✻±0.004 % of FSR
G=100 ±0.0005 ±0.002 ✻±0.004 % of FSR
G=1000 ±0.001 (Note 4) ✻✻% of FSR
OUTPUT
Voltage: Positive RL = 10kΩ(V+) – 1.4 (V+) – 0.9 ✻✻ V
Negative RL = 10kΩ(V–) + 1.4 (V–) + 0.8 ✻✻ V
Load Capacitance Stability 1000 ✻pF
Short-Circuit Current +6/–15 ✻mA
FREQUENCY RESPONSE
Bandwidth, –3dB G=1 1.3 ✻MHz
G=10 700 ✻kHz
G=100 200 ✻kHz
G=1000 20 ✻kHz
Slew Rate VO = ±10V, G=10 4 ✻V/µs
Settling Time, 0.01% G=1 7 ✻µs
G=10 7 ✻µs
G=100 9 ✻µs
G=1000 80 ✻µs
Overload Recovery 50% Overdrive 4 ✻µs
POWER SUPPLY
Voltage Range ±2.25 ±15 ±18 ✻✻ ✻V
Current, Total VIN = 0V ±1.4 ±1.5 ✻✻mA
TEMPERATURE RANGE
Specification –40 85 ✻✻°C
Operating –40 125 ✻✻°C
θ
JA 80 ✻°C/W
✻ Specification same as INA2128P, U.
NOTE: (1) Input common-mode range varies with output voltage—see typical curves. (2) Guaranteed by wafer test. (3) Temperature coefficient of the “50kΩ” 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
3
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
ABSOLUTE MAXIMUM RATINGS
PIN CONFIGURATION
Top View DIP
SOL-16
V
INA
V
INA
R
GA
R
GA
V
INB
V
INB
R
GB
R
GB
1
2
3
4
Ref
A
V
OA
Sense
A
V–
5
6
7
8
16
15
14
13
Ref
B
V
OB
Sense
B
V+
12
11
10
9
–
+
–
+
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
PACKAGE
DRAWING TEMPERATURE
PRODUCT PACKAGE NUMBER(1) RANGE
INA2128PA 16-Pin Plastic DIP 180 –40°C to +85°C
INA2128P 16-Pin Plastic DIP 180 –40°C to +85°C
INA2128UA SOL-16 Surface-Mount 211 –40°C to +85°C
INA2128U SOL-16 Surface-Mount 211 –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.
®
INA2128 4
INPUT COMMON-MODE RANGE
vs OUTPUT VOLTAGE, VS = ±5, ±2.5V
Output Voltage (V)
Common-Mode Voltage (V)
–5
5
4
3
2
1
0
–1
–2
–3
–4
–5 –4 –3 –2 –1 0 1 2 3 4 5
VS = ±5V
VS = ±2.5V
G = 1 G = 1
G ≥ 10 G ≥ 10
G ≥ 10
G = 1
INPUT COMMON-MODE RANGE
vs OUTPUT VOLTAGE, V
S
= ±15V
Output Voltage (V)
Common-Mode Voltage (V)
–15 –10 0 5 15–5
15
10
5
0
–5
–10
–15 10
G = 1 G = 1
G ≥ 10 G ≥ 10
V
D/2
–
+
–
+
V
CM
V
O
V
D/2
Ref
–15V
+15V
+
TYPICAL PERFORMANCE CURVES
At TA = +25°C, VS = ±15V, unless otherwise noted.
POSITIVE POWER SUPPLY REJECTION
vs FREQUENCY
Frequency (Hz)
Power Supply Rejection (dB)
140
120
100
80
60
40
20
010 100 1k 10k 100k 1M
G = 100V/V
G = 1000V/V
G = 1V/V
G = 10V/V
GAIN vs FREQUENCY
60
50
40
30
20
10
0
–10
–20
Gain (dB)
Frequency (Hz)
1k 10k 100k 1M 10M
G = 100V/V
G = 10V/V
G = 1V/V
G = 1000V/V
COMMON-MODE REJECTION vs FREQUENCY
Frequency (Hz)
Common-Mode Rejection (dB)
10 100 10k 1M1k
140
120
100
80
60
40
20
0100k
G = 1V/V
G = 10V/V
G = 100V/V
G = 1000V/V
NEGATIVE POWER SUPPLY REJECTION
vs FREQUENCY
Frequency (Hz)
Power Supply Rejection (dB)
140
120
100
80
60
40
20
010 100 1k 10k 100k 1M
G = 100V/V
G = 1000V/V
G = 1V/V
G = 10V/V
®
INA2128
5
TYPICAL PERFORMANCE CURVES (CONT)
At TA = +25°C, VS = ±15V, unless otherwise noted.
CROSSTALK vs FREQUENCY
Frequency (Hz)
Crosstalk (dB)
10 100 10k 1M1k
140
120
100
80
60
40
20
0100k
G = 1V/V
G = 10V/V
G = 100V/V
G = 1000V/V
G = 1000V/V
G = 100V/V
SETTLING TIME vs GAIN
Gain (V/V)
Settling Time (µs)
100
10
11 10 100 1000
0.01%
0.1%
OFFSET VOLTAGE WARM-UP
10
8
6
4
2
0
–2
–4
–6
–8
–10 010 20 30 40 50
Time (ms)
Offset Voltage Change (µV)
INPUT OVER-VOLTAGE V/I CHARACTERISTICS
5
4
3
2
1
0
–1
–2
–3
–4
–5
Input Current (mA)
Input Voltage (V)
–50 –40 –30 –20 –10 10 20 30 40050
G = 1V/V
G = 1V/V
G = 1000V/V
G = 1000V/V V
IN
I
IN
–15V
+15V
INA2128
1/2
Flat region represents
normal linear operation.
INPUT- REFERRED NOISE vs FREQUENCY
Frequency (Hz)
Input-Referred Voltage Noise (nV/√ Hz)
110 1k100
1k
100
10
110k
G = 1V/V
G = 10V/V
100
10
1
0.1
Input Bias Current Noise (pA/√ Hz)
Current Noise
G = 100, 1000V/V
QUIESCENT CURRENT and SLEW RATE
vs TEMPERATURE
Temperature (°C)
Quiescent Current (µA)
1.7
1.6
1.5
1.4
1.3
1.2
6
5
4
3
2
1
–75 –50 –25 0 25 50 75 100 125
Slew Rate (V/µs)
IQ
Slew Rate
®
INA2128 6
TYPICAL PERFORMANCE CURVES (CONT)
At TA = +25°C, VS = ±15V, unless otherwise noted.
MAXIMUM OUTPUT VOLTAGE vs FREQUENCY
Frequency (Hz)
Peak-to-Peak Output Voltage (Vpp)
30
25
20
15
10
5
01k 10k 100k 1M
G = 1
G = 10, 100
G = 1000
SHORT-CIRCUIT OUTPUT CURRENT
vs TEMPERATURE
16
14
12
10
8
6
4
2
0–75 –50 –25 0 25 50 75 100 125
Temperature (°C)
Short Circuit Current (mA)
–I
SC
+I
SC
OUTPUT VOLTAGE SWING
vs OUTPUT CURRENT
(V+)
(V+)–0.4
(V+)–0.8
(V+)–1.2
(V+)+1.2
(V–)+0.8
(V–)+0.4
V– 01234
Output Current (mA)
Output Voltage (V)
OUTPUT VOLTAGE SWING
vs POWER SUPPLY VOLTAGE
V+
(V+)–0.4
(V+)–0.8
(V+)–1.2
(V–)+1.2
(V–)+0.8
(V–)+0.4
V– 0 5 10 15 20
Power Supply Voltage (V)
Output Voltage Swing (V)
+25°C +85°C
–40°C
+25°C
–40°C
+85°C
R
L
= 10kΩ
+85°C
–40°C
INPUT BIAS CURRENT vs TEMPERATURE
2
1
0
–1
–2–75 –50 –25 0 25 50 75 100 125
Temperature (°C)
Input Bias Current (nA)
I
OS
I
B
Typical I
B
and I
OS
Range ±2nA at 25°C
TOTAL HARMONIC DISTORTION + NOISE
vs FREQUENCY
Frequency (Hz)
THD+N (%)
100 1k 10k
1
0.1
0.01
0.001 100k
V
O
= 1Vrms G = 1
R
L
= 10kΩ
G = 10V/V
R
L
= 100kΩ
G = 100, R
L
= 100kΩ
G = 1, R
L
= 100kΩ
500kHz Measurement
Bandwidth
Dashed Portion
is noise limited.
®
INA2128
7
TYPICAL PERFORMANCE CURVES (CONT)
At TA = +25°C, VS = ±15V, unless otherwise noted.
G = 1
G = 10
5µs/div
SMALL-SIGNAL STEP RESPONSE
(G = 1, 10)
G = 100
G = 1000
20µs/div
SMALL-SIGNAL STEP RESPONSE
(G = 100, 1000)
G = 1
G = 10
5µs/div
LARGE-SIGNAL STEP RESPONSE
(G = 1, 10)
G = 100
G = 1000
5µs/div
LARGE-SIGNAL STEP RESPONSE
(G = 100, 1000)
0.1µV/div
1s/div
VOLTAGE NOISE 0.1 to 10Hz
INPUT-REFERRED, G ≥ 100
20mV/div 20mV/div
5V/div
5V/div
®
INA2128 8
APPLICATION INFORMATION
Figure 1 shows the basic connections required for operation
of the INA2128. Applications with noisy or high impedance
power supplies may require decoupling capacitors close to
the device pins as shown.
The output is referred to the output reference (Ref) terminals
(RefA and RefB) which are normally grounded. These must
be low-impedance connections to assure good common-
mode rejection. A resistance of 8Ω in series with a Ref pin
will cause a typical device to degrade to approximately
80dB CMR (G = 1).
The INA2128 has a separate output sense feedback connec-
tions SenseA and SenseB. These must be connected to their
respective output terminals for proper operation. The output
sense connection can be used to sense the output voltage
directly at the load for best accuracy.
SETTING THE GAIN
Gain of the INA2128 is set by connecting a single external
resistor, RG, connected as shown:
Commonly used gains and resistor values are shown in
Figure 1.
The 50kΩ term in equation 1 comes from the sum of the two
internal feedback resistors of A1 and A2. These on-chip
metal film resistors are laser trimmed to accurate absolute
values. The accuracy and temperature coefficient of these
resistors are included in the gain accuracy and drift specifi-
cations of the INA2128.
The stability and temperature drift of the external gain
setting resistor, RG, also affects gain. RG’s contribution to
gain accuracy and drift can be directly inferred from the gain
equation (1). Low resistor values required for high gain can
make wiring resistance important. Sockets add to the wiring
resistance which will contribute additional gain error in
gains of approximately 100 or greater.
DYNAMIC PERFORMANCE
The typical performance curve “Gain vs Frequency” shows
that despite its low quiescent current, the INA2128 achieves
wide bandwidth, even at high gain. This is due to its current-
feedback topology. Settling time also remains excellent at
high gain—see “Settling Time vs Gain.”
NOISE PERFORMANCE
The INA2128 provides very low noise in most applications.
Low frequency noise is approximately 0.2µVp-p measured
from 0.1 to 10Hz (G ≥ 100). This provides dramatically
improved noise when compared to state-of-the-art chopper-
stabilized amplifiers.
G=1+50kΩ
R
G
(1)
FIGURE 1. Basic Connections.
DESIRED RGNEAREST 1% RG
GAIN (Ω)(Ω)
1NC NC
2 50.00k 49.9k
5 12.50k 12.4k
10 5.556k 5.62k
20 2.632k 2.61k
50 1.02k 1.02k
100 505.1 511
200 251.3 249
500 100.2 100
1000 50.05 49.9
2000 25.01 24.9
5000 10.00 10
10000 5.001 4.99
NC: No Connection.
A
1
A
2
A
3
6
(11)
7 Sense
(10)
(12)
(13)
(14)
(16)
(15) 40kΩ40kΩ
40kΩ40kΩ
9
8
2
4
3
1
Pin numbers for
Channel B shown
in parenthesis.
V
IN
V
IN
R
G
V+
V–
INA2128
G = 1 + 50kΩ
R
G
–
+5
Over-Voltage
Protection
25kΩ
25kΩ
Over-Voltage
Protection
Load
V
O
= G • (V
IN
– V
IN
)
+–
0.1µF
0.1µF
NOTE: If channel is unused,
connect inputs to ground, sense
to V
O
, and leave Ref open-circuit.
+
–
V
O
R
G
Also drawn in simplified form:
INA2128
Ref
V
O
V
IN
–
V
IN
+
Ref
®
INA2128
9
OFFSET TRIMMING
The INA2128 is laser trimmed for low offset voltage and
offset voltage drift. Most applications require no external
offset adjustment. Figure 2 shows an optional circuit for
trimming the output offset voltage. The voltage applied to
Ref terminal is summed with the output. The op amp buffer
provides low impedance at the Ref terminal to preserve good
common-mode rejection.
FIGURE 3. Providing an Input Common-Mode Current Path.
voltage swing of amplifiers A1 and A2. So the linear com-
mon-mode input range is related to the output voltage of the
complete amplifier. This behavior also depends on supply
voltage—see performance curves “Input Common-Mode
Range vs Output Voltage.”
Input-overload can produce an output voltage that appears
normal. For example, if an input overload condition drives
both input amplifiers to their positive output swing limit, the
difference voltage measured by the output amplifier will be
near zero. The output of the INA2128 will be near 0V even
though both inputs are overloaded.
LOW VOLTAGE OPERATION
The INA2128 can be operated on power supplies as low as
±2.25V. Performance remains excellent with power sup-
plies ranging from ±2.25V to ±18V. Most parameters vary
only slightly throughout this supply voltage range—see
typical performance curves. Operation at very low supply
voltage requires careful attention to assure that the input
voltages remain within their linear range. Voltage swing
requirements of internal nodes limit the input common-
mode range with low power supply voltage. Typical perfor-
mance curves, “Input Common-Mode Range vs Output
Voltage” show the range of linear operation for ±15V, ±5V,
and ±2.5V supplies.
47kΩ47kΩ
10kΩ
Microphone,
Hydrophone
etc.
Thermocouple
Center-tap provides
bias current return.
INA2128
1/2
INA2128
1/2
INA2128
1/2
10kΩ
OPA177
±10mV
Adjustment Range
100Ω(For other
channel)
100Ω
100µA
1/2 REF200
100µA
1/2 REF200
V+
V–
R
G
INA2128
1/2
Ref
V
O
V
IN
–
V
IN
+
FIGURE 2. Optional Trimming of Output Offset Voltage.
INPUT BIAS CURRENT RETURN PATH
The input impedance of the INA2128 is extremely high—
approximately 1010Ω. However, a path must be provided for
the input bias current of both inputs. This input bias current
is approximately ±2nA. High input impedance means that
this input bias current changes very little with varying input
voltage.
Input circuitry must provide a path for this input bias current
for proper operation. Figure 3 shows various provisions for
an input bias current path. Without a bias current path, the
inputs will float to a potential which exceeds the common-
mode range of the INA2128 and the input amplifiers will
saturate.
If the differential source resistance is low, the bias current
return path can be connected to one input (see the thermo-
couple example in Figure 3). With higher source impedance,
using two equal resistors provides a balanced input with
possible advantages of lower input offset voltage due to bias
current and better high-frequency common-mode rejection.
INPUT COMMON-MODE RANGE
The linear input voltage range of the input circuitry of the
INA2128 is from approximately 1.4V below the positive
supply voltage to 1.7V above the negative supply. As a
differential input voltage causes the output voltage increase,
however, the linear input range will be limited by the output
®
INA2128 10
INPUT PROTECTION
The inputs of the INA2128 are individually protected for
voltages up to ±40V. For example, a condition of –40V on
one input and +40V on the other input will not cause
damage. Internal circuitry on each input provides low series
impedance under normal signal conditions. To provide
equivalent protection, series input resistors would contribute
excessive noise. If the input is overloaded, the protection
circuitry limits the input current to a safe value of approxi-
mately 1.5 to 5mA. The typical performance curve “Input
Bias Current vs Common-Mode Input Voltage” shows this
input current limit behavior. The inputs are protected even if
the power supplies are disconnected or turned off.
CHANNEL CROSSTALK
The two channels of the INA2128 are completely indepen-
dent, including all bias circuitry. At DC and low frequency
there is virtually no signal coupling between channels.
Crosstalk increases with frequency and is dependent on
circuit gain, source impedance and signal characteristics.
As source impedance increases, careful circuit layout will
help achieve lowest channel crosstalk. Most crossstalk is
produced by capacitive coupling of signals from one channel
to the input section of the other channel. To minimize
coupling, separate the input traces as far as practical from
any signals associated with the opposite channel. A grounded
guard trace surrounding the inputs helps reduce stray cou-
pling between channels. Run the differential inputs of each
channel parallel to each other or directly adjacent on top and
bottom side of a circuit board. Stray coupling then tends to
produce a common-mode signal which is rejected by the
IA’s input.
FIGURE 5. Sum of Differences Amplifier.
FIGURE 4. Two-Axis Bridge Amplifier.
FIGURE 6. ECG Amplifier With Right-Leg Drive.
INA2128
1/2
R
G
/2
R
G
= 5.6kΩ
V
O
LA
RL
RA
10kΩ
Ref
NOTE: Due to the INA2128’s current-feedback
topology, V
G
is approximately 0.7V less than
the common-mode input voltage. This DC offset
in this guard potential is satisfactory for many
guarding applications.
G = 102.8kΩ
V
G
V
G
2.8kΩ
1/2
OPA2604
390kΩ
390kΩ
1/2
OPA2604
V
O
= G
A
(V
2
– V
1
) + G
B
(V
4
– V
3
)
V
1
V
2
Ref
V
3
R
GB
R
GA
V
4
Ref
INA2128
1/2
INA2128
1/2
X-axis
V
O
Y-axis
V
O
X-axis
Y-axis
V
EX
V
EX
INA2128
1/2
INA2128
1/2
