OPA388_17 Datasheet, PDF (1/34 Pages) Texas Instruments – Precision, Zero-Drift, Zero-Crossover, True Rail-to-Rail Input/Output, Operational Amplifiers

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OPA388, OPA2388, OPA4388
SBOS777 – DECEMBER 2016
OPAx388 Precision, Zero-Drift, Zero-Crossover, True Rail-to-Rail Input/Output,
Operational Amplifiers
1 Features
•1 Ultra-Low Offset Voltage: ±0.25 µV
• Zero-Drift: ±0.005 µV/°C
• Zero-Crossover: 140-dB CMRR True RRIO
• Low Noise: 7.0 nV√Hz at 1 kHz
• No 1/f Noise: 140 nV_PP (0.1 Hz to 10 Hz)
• Fast Settling: 2 µs (1 V to 0.01%)
• Gain Bandwidth: 10 MHz
• Single Supply: 2.5 V to 5.5 V
• Dual Supply: ±1.25 V to ±2.75 V
• True Rail-to-Rail Input and Output
• EMI/RFI Filtered Inputs
• Industry-Standard Packages:
– Single in SOIC-8, SOT-23-5, and VSSOP-8
– Dual in SOIC-8 and VSSOP-8
– Quad in SOIC-14 and TSSOP-14
2 Applications
• Bridge Amplifiers
• Strain Gauges
• Test Equipment
• Current Shunt Measurement
• Thermocouples, Thermopiles
• Electronic Scales
• Medical Instrumentation
• Resistor Thermal Detectors
• Precision Active Filters
3 Description
The OPAx388 (OPA388, OPA2388, and OPA4388)
series of precision operational amplifiers are ultra-low
noise, fast-settling, zero-drift, zero-crossover devices
that provide rail-to-rail input and output operation.
These features and excellent ac performance,
combined with only 0.25 µV of offset and 0.005 µV/°C
of drift over temperature, makes the OPAx388 ideal
for driving high-precision, analog-to-digital converters
(ADCs) or buffering the output of high-resolution,
digital-to-analog converters (DACs). This design
results in superior performance when driving analog-
to-digital converters (ADCs) without degradation of
linearity. The OPA388 (single version) is available in
the VSSOP-8, SOT23-5, and SOIC-8 packages. The
OPA2388 (dual version) is offered in the VSSOP-8
and SO-8 packages. The OPA4388 (quad version) is
offered in the TSSOP-14 and SO-14 packages. All
versions are specified over the extended industrial
temperature range (–40°C to +125°C).
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SOIC (8)
4.90 mm × 3.90 mm
OPA388
SOT-23 (5)
2.90 mm × 1.60 mm
VSSOP (8)
3.00 mm × 3.00 mm
OPA2388
SOIC (8)
VSSOP (8)
4.90 mm × 3.90 mm
3.00 mm × 3.00 mm
OPA4388
SOIC (14)
TSSOP (14)
8.65 mm x 3.90 mm
5.00 mm x 4.40 mm
(1) For all available packages, see the package option addendum
at the end of the data sheet.
OPA388 in a High-CMRR, Instrumentation
Amplifier Application
RG
VOUT
R2
10 k
GND
R4
100 k
R3
25 k
+5V
±
OPA388
+
GND
R4
+5V
100 k
REF5025
+5V
+SENSE
-SENSE
GND
Load Cell
R2
25 k
+5V
±
OPA388
+
GND
NŸ
G=5+
R_G
OPA388 Allows Precision, Low-Error
Measurements
2.53
3
2.52
2
2.51
1
2.5
0
2.49
-1
2.48
-2
R_G = 1 kŸ
2.47
±100 ±80 ±60 ±40 ±20 0
-3
20 40 60 80 100
û5 5 SSP
C001
1
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.