Specifications
| Type | Description |
|---|---|
| Part Number | INA1650 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | 14-pin TSSOP (PW), 4.40 mm x 5.00 mm nominal body |
| Channel Count | 2 channels |
| Common-Mode Rejection Ratio | 91 dB typ; VREF pins connected to ground, VS=±18 V, VCM from (V-) + 0.25 V to (V+) - 2 V |
| Common-Mode Rejection Ratio | 85 dB min, 91 dB typ; VREF and COM pins connected to ground, VS=±18 V, VCM from (V-) + 0.25 V to (V+) - 2 V, TA=25°C |
| Common-Mode Rejection Ratio Over Temperature | 82 dB min, 89 dB typ; VREF and COM pins connected to ground, VS=±18 V, TA=-40°C to +125°C |
| Differential Input Impedance | 850 kΩ min, 1000 kΩ typ, 1150 kΩ max; TA=25°C, VS=±2.25 V to ±18 V |
| Common-Mode Input Impedance | 212.5 kΩ min, 250 kΩ typ, 287.5 kΩ max; TA=25°C, VS=±2.25 V to ±18 V |
| THD+N | 0.00039%, -108.1 dB typ; VO=3 VRMS, f=1 kHz, 90-kHz measurement bandwidth, VS=±18 V |
| THD+N | 0.000174%, -115.2 dB typ; VIN=22 dBu (9.7516 VRMS), FIN=1 kHz, VS=±18 V, 90-kHz measurement bandwidth |
| Output Voltage Noise | 4.5 µVRMS, -104.7 dBu typ; f=20 Hz to 20 kHz, no weighting |
| Output Voltage Noise Density | 47 nV/√Hz typ; f=100 Hz |
| Output Voltage Noise Density | 31 nV/√Hz typ; f=1 kHz |
| Small-Signal Bandwidth | 2.7 MHz typ; TA=25°C, VS=±2.25 V to ±18 V |
| Slew Rate | 10 V/µs typ; TA=25°C, VS=±2.25 V to ±18 V |
| Full-Power Bandwidth | 1.59 MHz typ; VO=1 VP |
| Gain | 1 V/V typ; TA=25°C, VS=±2.25 V to ±18 V |
| Gain Error | 0.04% typ, 0.05% max; TA=25°C, VS=±2.25 V to ±18 V |
| Input Common-Mode Voltage Range | (V-) + 0.25 V min to (V+) - 2 V max; TA=25°C, VS=±2.25 V to ±18 V |
| Output Offset Voltage | ±1 mV typ, ±3 mV max; TA=25°C, VS=±2.25 V to ±18 V |
| Output Offset Voltage Drift | 2 µV/°C typ, 7 µV/°C max; TA=-40°C to +125°C |
| Power-Supply Rejection Ratio | 2 µV/V typ; TA=25°C, VS=±2.25 V to ±18 V |
| Recommended Supply Voltage | 4.5 V min, 36 V max (±2.25 V to ±18 V); operating free-air temperature range |
| Quiescent Current | 8 mA min, 10.5 mA typ, 12 mA max; INA1650, IOUT=0 A, TA=25°C |
| Quiescent Current Over Temperature | 14 mA max; INA1650, IOUT=0 A, TA=-40°C to +125°C |
| Short-Circuit Current | ±75 mA typ; VS=±18 V |
| EMI/RFI Filter Corner Frequency | 80 MHz typ; integrated EMI filters |
| Operating Temperature Range | -40°C to +125°C; specified temperature range |
| Datasheet Status | request_only |
Product Overview
The INA1650 is a Texas Instruments Signal_Chain audio line receiver with 2 channels and a typical gain of 1 V/V. It is specified for operation from 4.5 V to 36 V total supply voltage, equivalent to ±2.25 V to ±18 V, and across a -40°C to +125°C operating temperature range.
Audio performance specifications include 0.00039% THD+N at 3 VRMS output and 1 kHz, or 0.000174% THD+N with 22 dBu input at 1 kHz, both under ±18 V supply and 90-kHz measurement bandwidth conditions. Noise specifications include 4.5 µVRMS output voltage noise from 20 Hz to 20 kHz, 47 nV/√Hz at 100 Hz, and 31 nV/√Hz at 1 kHz.
The device uses a 14-pin TSSOP (PW) package with a 4.40 mm x 5.00 mm nominal body. Input and interface parameters include 850 kΩ to 1150 kΩ differential input impedance, 212.5 kΩ to 287.5 kΩ common-mode input impedance, integrated EMI filters with an 80 MHz typical corner frequency, and specified common-mode rejection up to 91 dB typical under datasheet conditions.
Key Features
- 2-channel audio line receiver architecture
- 91 dB typical common-mode rejection at ±18 V
- 82 dB minimum CMRR across -40°C to +125°C
- 0.000174% typical THD+N with 22 dBu input
- 4.5 µVRMS typical output noise over 20 Hz to 20 kHz
- 2.7 MHz typical small-signal bandwidth
- 10 V/µs typical slew rate
- 1 V/V typical gain with 0.05% maximum gain error
- Integrated EMI filters with 80 MHz corner frequency
- 4.5 V to 36 V recommended supply range
Typical Applications
- Balanced audio line receivers
- Two-channel audio input stages
- Audio signal-chain interfaces
- Common-mode noise rejection circuits
- Low-distortion audio paths
- Wide-supply audio equipment
- TSSOP audio board assemblies
Procurement Notes
When requesting a quote for INA1650, 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 device is the INA1650?
The INA1650 is a Texas Instruments audio line receiver in the Signal_Chain category. The extracted datasheet facts identify it as a 2-channel device supplied in a 14-pin TSSOP (PW) package.
What supply voltage range is recommended for INA1650?
The recommended supply voltage range is 4.5 V minimum to 36 V maximum, corresponding to ±2.25 V to ±18 V operation. The operating temperature range is specified from -40°C to +125°C.
What are the key audio performance figures for INA1650?
Specified audio performance includes 0.00039% typical THD+N at 3 VRMS output and 0.000174% typical THD+N with 22 dBu input, both at 1 kHz under stated ±18 V and 90-kHz bandwidth conditions.
What package is used for the INA1650?
The INA1650 is listed in a 14-pin TSSOP package, TI package code PW. The nominal package body size from the extracted facts is 4.40 mm by 5.00 mm.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 8, 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.