Specifications
| Type | Description |
|---|---|
| Part Number | OPA388 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | SOIC-8 4.90 mm x 3.90 mm; SOT-23-5 2.90 mm x 1.60 mm; VSSOP-8 3.00 mm x 3.00 mm |
| Amplifier Channels | 1 |
| Offset Voltage | ±0.25 µV |
| Offset Voltage Drift | ±0.005 µV/°C |
| Common-Mode Rejection Ratio | 140 dB |
| Input Voltage Noise Density | 7.0 nV/√Hz |
| Low-Frequency Noise | 140 nVPP |
| Settling Time | 2 µs |
| Gain Bandwidth Product | 10 MHz |
| Single-Supply Operating Voltage | 2.5 V to 5.5 V |
| Dual-Supply Operating Voltage | ±1.25 V to ±2.75 V |
| Specified Temperature Range | -40°C to +125°C |
| Input/Output Range | True rail-to-rail input and output |
| Input EMI/RFI Filtering | Filtered inputs |
| Absolute Maximum Single-Supply Voltage | 6 V |
| Absolute Maximum Dual-Supply Voltage | ±3 V |
| Absolute Maximum Common-Mode Voltage | (V-) - 0.5 V to (V+) + 0.5 V |
| Absolute Maximum Differential Input Voltage | (V+) - (V-) + 0.2 V |
| Absolute Maximum Input Current | ±10 mA |
| Output Short Circuit | Continuous |
| Absolute Maximum Operating Ambient Temperature | -55°C to +150°C |
| Absolute Maximum Junction Temperature | 150°C |
| Storage Temperature Range | -65°C to +150°C |
| ESD Rating HBM | ±4000 V |
| ESD Rating CDM | ±1000 V |
| OPA388 Junction-to-Ambient Thermal Resistance | 116 °C/W |
| OPA388 Junction-to-Ambient Thermal Resistance | 145.7 °C/W |
| OPA388 Junction-to-Ambient Thermal Resistance | 177 °C/W |
| OPA388 Junction-to-Case Top Thermal Resistance | 60 °C/W |
| OPA388 Junction-to-Case Top Thermal Resistance | 94.8 °C/W |
| OPA388 Junction-to-Case Top Thermal Resistance | 69 °C/W |
| Datasheet Status | request_only |
Product Overview
The OPA388 is a Texas Instruments precision zero-drift operational amplifier for Signal_Chain circuits that require low offset, low drift, and rail-to-rail signal range. The OPA388 single version integrates one amplifier channel and specifies ±0.25 µV offset voltage with ±0.005 µV/°C drift over temperature.
Signal performance includes 140 dB common-mode rejection ratio during zero-crossover true rail-to-rail input/output operation, 7.0 nV/√Hz input voltage noise density at 1 kHz, and 140 nVPP low-frequency noise from 0.1 Hz to 10 Hz. The amplifier also specifies 10 MHz gain bandwidth product and 2 µs settling time for a 1 V step to 0.01%.
Recommended operating supplies are 2.5 V to 5.5 V for single-supply designs and ±1.25 V to ±2.75 V for dual-supply operation. The specified temperature range is -40°C to +125°C. Package options include SOIC-8 4.90 mm x 3.90 mm, SOT-23-5 2.90 mm x 1.60 mm, and VSSOP-8 3.00 mm x 3.00 mm, with package-specific thermal resistance values listed in the datasheet facts.
Key Features
- Single-channel precision zero-drift operational amplifier
- ±0.25 µV offset voltage in feature summary
- ±0.005 µV/°C offset drift over temperature
- 140 dB common-mode rejection ratio during rail-to-rail operation
- 7.0 nV/√Hz input voltage noise density at 1 kHz
- 140 nVPP low-frequency noise from 0.1 Hz to 10 Hz
- 2 µs settling for 1 V step to 0.01%
- 10 MHz gain bandwidth product
- 2.5 V to 5.5 V single-supply operation
- ±1.25 V to ±2.75 V dual-supply operation
- True rail-to-rail input and output range
- Filtered inputs for EMI/RFI filtering
Typical Applications
- Precision signal conditioning
- Low-offset sensor interfaces
- Rail-to-rail analog front ends
- Low-voltage single-supply circuits
- Dual-supply precision amplifier stages
- Low-frequency noise-sensitive measurements
Procurement Notes
When requesting a quote for OPA388, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What type of amplifier is the OPA388?
The OPA388 is a Texas Instruments precision zero-drift operational amplifier in the Signal_Chain category. The extracted facts identify the OPA388 single version as a one-channel device.
What supply voltage range does the OPA388 support?
The recommended operating conditions specify 2.5 V to 5.5 V for single-supply operation and ±1.25 V to ±2.75 V for dual-supply operation.
Which package options are listed for the OPA388?
The extracted package options are SOIC-8 4.90 mm x 3.90 mm, SOT-23-5 2.90 mm x 1.60 mm, and VSSOP-8 3.00 mm x 3.00 mm.
What are the key noise specifications for the OPA388?
The OPA388 specifies 7.0 nV/√Hz input voltage noise density at 1 kHz and 140 nVPP low-frequency noise over the 0.1 Hz to 10 Hz range.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.