Specifications
| Type | Description |
|---|---|
| Part Number | OPA1632 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Component Type | Other |
| Package Case | SOIC-8 (D) 4.9 mm x 6 mm; HVSSOP-8 PowerPAD (DGN) 3 mm x 4.9 mm |
| Architecture | Fully differential amplifier; designed for audio ADC drive or class-D amplifier predriver |
| Ultra-low Distortion | 0.000028%; THD+N feature value |
| Input Voltage Noise | 1.25 nV/√Hz; typical low-noise feature value |
| Slew Rate | 72 V/µs; high-speed feature value |
| Gain Bandwidth Product | 180 MHz; high-speed feature value |
| Supply Voltage Range | ±2.5 V to ±15 V; recommended wide supply range stated in features |
| Shutdown Current | 0.85 mA at VS = ±5 V |
| Operating Temperature Range | -40°C to +85°C; device characterization / recommended ambient temperature range |
| Input/Output Conversion Capability | Single-ended input to balanced differential output |
| Package Option | D, SOIC-8; nominal package size 4.9 mm x 6 mm |
| Package Option | DGN, HVSSOP-8 PowerPAD; nominal package size 3 mm x 4.9 mm |
| Target Load/Application | High-performance audio ADCs; example ADC: PCM1804 |
| Output Benefit | Differential output reduces even-order harmonics |
| Common-mode Noise Behavior | Differential output minimizes common-mode noise interference |
| Shutdown Function | Included; used to save power when device is not in use |
| Thermally Enhanced Package | HVSSOP-8 PowerPAD; available package option |
| Absolute Maximum Differential Input Voltage | ±1.5 V; revision history notes change to Absolute Maximum Ratings table |
| Input Bias Current | 7.9 µA typ, 14 µA max; D and DGN packages |
| Input Current Noise | 1.7 pA/√Hz; electrical characteristics revision note for D and DGN packages |
| Small-signal Bandwidth | 104 MHz at G = +2, RF = 602 Ω |
| Small-signal Bandwidth | 46 MHz at G = +5, RF = 1.5 kΩ |
| Small-signal Bandwidth | 24 MHz at G = +10, RF = 3.01 kΩ |
| Large-signal Bandwidth | 1.8 MHz; electrical characteristics revision note |
| Rise/Fall Time | 69 ns typ; electrical characteristics revision note |
| Settling Time to 0.1% | 36 ns typ; electrical characteristics revision note |
| Settling Time to 0.01% | 49 ns typ; electrical characteristics revision note |
| THD+N | 0.00003% typ; differential input/output, RL = 600 Ω |
| THD+N | 0.000028% typ; differential input/output, RL = 2 kΩ |
| THD+N | 0.000036% typ; single-ended input/output, RL = 600 Ω |
| Intermodulation Distortion | 0.000061% typ; differential input/output, RL = 2 kΩ |
| Datasheet Status | request_only |
Product Overview
The OPA1632 is a Texas Instruments fully differential audio operational amplifier in the Signal_Chain category. Its fully differential amplifier architecture is intended for audio ADC drive or class-D amplifier predriver stages, and it can convert a single-ended input to a balanced differential output.
Key electrical facts include 0.000028% THD+N as a feature value, 1.25 nV/√Hz typical input voltage noise, 72 V/µs slew rate, and 180 MHz gain bandwidth product. The specified supply voltage range is ±2.5 V to ±15 V, with 0.85 mA shutdown current at VS = ±5 V.
Package options are D SOIC-8 at 4.9 mm x 6 mm and DGN HVSSOP-8 PowerPAD at 3 mm x 4.9 mm. The HVSSOP-8 PowerPAD option is identified as the thermally enhanced package. The device is characterized for -40°C to +85°C ambient operation and includes a shutdown function for power saving when not in use.
Application context includes high-performance audio ADCs, with PCM1804 given as an example. The differential output reduces even-order harmonics and minimizes common-mode noise interference.
Key Features
- Fully differential amplifier for audio ADC drive
- Class-D amplifier predriver application support
- 0.000028% THD+N feature performance
- 1.25 nV/√Hz typical input voltage noise
- 72 V/µs slew rate
- 180 MHz gain bandwidth product
- ±2.5 V to ±15 V supply range
- Single-ended input to balanced differential output
- Differential output reduces even-order harmonics
- Shutdown function for reduced unused-device power
Typical Applications
- Audio ADC drive
- Class-D amplifier predrivers
- High-performance audio ADCs
- PCM1804 ADC front ends
- Single-ended to differential audio conversion
- Balanced differential audio outputs
- Common-mode noise sensitive audio paths
Procurement Notes
When requesting a quote for OPA1632, 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 OPA1632?
The OPA1632 is a fully differential audio operational amplifier from Texas Instruments. Its architecture is designed for audio ADC drive or class-D amplifier predriver use, and it supports single-ended input to balanced differential output conversion.
Which package options are listed for OPA1632?
The listed package options are D SOIC-8 with a nominal 4.9 mm x 6 mm size and DGN HVSSOP-8 PowerPAD with a nominal 3 mm x 4.9 mm size. The HVSSOP-8 PowerPAD option is thermally enhanced.
What are the main speed and noise specifications?
Extracted specifications include 1.25 nV/√Hz typical input voltage noise, 72 V/µs slew rate, and 180 MHz gain bandwidth product. Small-signal bandwidth values include 104 MHz at G = +2, 46 MHz at G = +5, and 24 MHz at G = +10.
What supply and temperature ranges apply to OPA1632?
The extracted facts list a recommended supply voltage range of ±2.5 V to ±15 V. The device characterization or recommended ambient operating temperature range is -40°C to +85°C.
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.