INA597
INA597
www.ti.com
SBOS385B – AUGUST 2019 – REVISED APRIL 2021
SBOS385B – AUGUST 2019 – REVISED APRIL 2021
INA597 High-Precision, Wide-Bandwidth e-trim™ Difference Amplifier
1 Features
3 Description
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Low offset voltage: 200 μV (maximum)
Low offset voltage drift: ±5 μV/°C (maximum)
Low noise: 18 nV/√Hz at 1 kHz
Low gain error: ±0.03% (maximum)
High common-mode rejection: 88 dB (minimum)
Wide bandwidth: 2-MHz GBW
Low quiescent current: 1.1 mA per amplifier
High slew rate: 18 V/μs
High capacitive load drive capability: 500 pF
Wide supply range:
– Single-supply: 4.5 V to 36 V
– Dual-supply: ±2.25 V to ±18 V
Specified temperature range:
–40°C to +125°C
Packages: 8-pin SOIC and VSSOP, 10-pin VSON
The INA597 is
a
low-power, wide-bandwidth,
difference amplifier for cost-sensitive applications.
The INA597 consists of a precision operational
amplifier (op amp) and a precision resistor network.
Excellent tracking of resistors maintains gain accuracy
and common-mode rejection over temperature.
Unique features such as low offset (200 μV,
maximum), low offset drift (5 μV/°C maximum) high
slew rate (18 V/μs), and high capacitive load drive
of up to 500 pF make the INA597 a robust,
high-performance difference amplifier for high-voltage
industrial applications.
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The common-mode range of the internal op amp
extends to the negative supply, and enables the
device to operate in single-supply applications. The
device operates on single (4.5 V to 36 V) or dual
supplies (±2.25 V to ±18 V).
2 Applications
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Data acquisition (DAQ)
Sensor modules and tags for asset tracking
Flow transmitter
Optical module
Power supply module
AC drive position feedback
Servo drive position feedback
Voltage conditioning module
The difference amplifier is the foundation of many
commonly used circuits. The INA597 provides this
circuit function without using an expensive precision
resistor network.
Device Information
PART NUMBER
PACKAGE(1)
BODY SIZE (NOM)
4.90 mm × 3.91 mm
3.00 mm × 3.00 mm
3.00 mm × 3.00 mm
SOIC (8)
INA597
VSON (10)
VSSOP (8)
(1) For all available packages, see the package option
addendum at the end of the data sheet.
VCC
20
15
10
5
V+
INA597
SENSE
œIN
6 kꢀ
6 kꢀ
12 kꢀ
12 kꢀ
œ
ADC
16 Bits Out
AIN
OUT
REF
+
+IN
Vœ
1
2
V
=
∂ V+IN - VœIN
(
)
OUT
0
-80
-60
-40
-20
0
20
40
60
80
Differential Input Data Acquisition
D004
Offset Voltage (mV)
Typical Distribution of Offset Voltage (RTO)
G = 1/2, VS = ±18 V
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
Product Folder Links: INA597
Copyright © 2021 Texas Instruments Incorporated
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