OPA189 Datasheet, PDF (1/34 Pages) Texas Instruments – Precision, 36-V, 14-MHz, MUX-Friendly Low-Noise, Rail-to-Rail Output, Zero-Drift Operational Amplifiers

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OPA189, OPA2189, OPA4189
SBOS830 – JUNE 2017
OPAx189, Precision, 36-V, 14-MHz, MUX-Friendly
Low-Noise, Rail-to-Rail Output, Zero-Drift Operational Amplifiers
1 Features
•1 Ultra-High Precision:
– Ultra-Low Offset Voltage: 0.4 μV
– Zero-Drift: 0.0035 μV/°C
• Excellent DC Precision:
– CMRR: 168 dB
– Open-Loop Gain: 170 dB
• Low Noise:
– V_N at 1 kHz: 5.8 nV/√Hz
– 0.1-Hz to 10-Hz Noise: 110 nV_PP
• Excellent Dynamic Performance:
– Gain Bandwidth: 14 MHz
– Slew Rate: 20 V/µs
– Fast Settling: 10-V, 0.01% in 1.5 µs
• Robust Design:
– MUX-Friendly Inputs
– RFI/EMI Filtered Inputs
• Wide Supply Range: 4.5 V to 36 V
• Quiescent Current: 1.7 mA (Maximum)
• Rail-to-Rail Output
• Input Includes Negative Rail
2 Applications
• Precision Multi-Chanel Systems
• Bridge Amplifier
• Strain Gauges
• Temperature Measurement
• Resistance Temperature Detectors
3 Description
The OPAx189 (OPA189, OPA2189, and OPA4189)
series of high-precision operational amplifiers are
ultra-low noise, fast-settling, zero-drift devices that
provide rail-to-rail output operation and feature a
unique MUX-friendly architecture. These features and
excellent ac performance, combined with only 0.4 µV
of offset and 0.0035 µV/°C of drift over temperature,
makes the OPAx189 well-suited for precision
instrumentation, signal measurement, and active
filtering applications. Moreover, the MUX-friendly
input architecture prevents inrush current when
applying large differential voltages which improves
settling performance in multi-channel systems, all
while providing robust ESD protection during
shipment, handling, and assembly. All versions are
specified from –40°C to +125°C.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SOIC (8)
4.90 mm × 3.90 mm
OPA189
SOT-23 (5)
2.90 mm × 1.60 mm
VSSOP (8)
3.00 mm × 3.00 mm
OPA2189
SOIC (8)
VSSOP (8)
4.90 mm × 3.90 mm
3.00 mm × 3.00 mm
OPA4189
SOIC (14)
TSSOP (14)
8.65 mm × 3.90 mm
5.00 mm × 4.40 mm
(1) For all available packages, see the package option addendum
at the end of the data sheet.
OPAx189 Preserves R-C Settling Performance in a
Switched or Multiplexed Application
Analog Inputs
Bridge Sensor
Thermocouple
Current Sensing
4:2
HV
MUX
OPAx189
+
Robust MUX-Friendly Inputs
without Anti-Parallel Diodes
+
OPAx189
Photo
LED Detector
Optical Sensor
1
High-Voltage Multiplexed Input
High-Voltage Level Translation
Input
Copyright © 2017, Texas Instruments Incorporated
OPAx189 MUX-Friendly Input Settles Quickly and
Maintains High Input Impedance When Switched
OPAx189 MUX-friendly Inputs
Prevents Loading of Source
OPAx189
Competitor HV Amp
Classical High-Voltage Op Amp
Anti-Parallel Diodes Loads Source
Time
Copyright © 2017, Texas Instruments Incorporated C003
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. ADVANCE INFORMATION for pre-production products; subject to
change without notice.