Specifications
| Type | Description |
|---|---|
| Part Number | INA1651 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Component Type | Other |
| Package / Case | 14-pin TSSOP (PW), 4.40 mm x 5.00 mm nominal body |
| Channels | 1; INA1651 single-channel device |
| Common-Mode Rejection Ratio | 91 dB typ; REF and COM pins connected to ground, VS=±18 V |
| Input Impedance | 1 MΩ differential; typical differential input impedance |
| Output Noise | -104.7 dBu unweighted; 20 Hz to 20 kHz bandwidth, no weighting |
| THD+N | -120 dB; 22 dBu signal level, 1 kHz, 22 kHz bandwidth |
| Bandwidth | 2.7 MHz; small-signal bandwidth |
| Quiescent Current | 6 mA typ; INA1651 |
| Supply Voltage Range | ±2.25 V to ±18 V; recommended operating supply range |
| Operating Temperature Range | -40°C to +125°C; specified operating temperature range |
| Supply Voltage Absolute Maximum | 40 V max; VS=(V+)–(V–), over operating free-air temperature range |
| Input Voltage Absolute Maximum | (V–)-0.5 V to (V+)+0.5 V; signal inputs, enable, ground |
| Input Differential Voltage Absolute Maximum | (V+)–(V–) max; over operating free-air temperature range |
| Input Current Absolute Maximum | ±10 mA; all pins except power-supply pins |
| Output Short-Circuit Rating | Continuous; short-circuit to VS/2, one amplifier per package |
| Operating Temperature Absolute Maximum | -55°C to +125°C; TA operating free-air temperature |
| Junction Temperature Absolute Maximum | 150°C; TJ |
| Storage Temperature Range | -65°C to +150°C; Tstg |
| ESD HBM Rating | ±4000 V; INA1651, ANSI/ESDA/JEDEC JS-001 |
| ESD CDM Rating | ±750 V; INA1651, JEDEC JESD22-C101 |
| Recommended Supply Voltage | 4.5 V to 36 V (±2.25 V to ±18 V); over operating free-air temperature range |
| Recommended Specified Temperature | -40°C to +125°C; recommended operating conditions |
| Junction-to-Ambient Thermal Resistance | 99.4°C/W; INA1651, PW TSSOP-14 package |
| Junction-to-Case Top Thermal Resistance | 29.9°C/W; INA1651, PW TSSOP-14 package |
| Junction-to-Board Thermal Resistance | 42.6°C/W; INA1651, PW TSSOP-14 package |
| Junction-to-Top Characterization Parameter | 1.5°C/W; INA1651, PW TSSOP-14 package |
| Junction-to-Board Characterization Parameter | 42.0°C/W; INA1651, PW TSSOP-14 package |
| THD+N | 0.00039%, -108.1 dB; VO=3 VRMS, f=1 kHz, 90 kHz measurement bandwidth, VS=±18 V |
| THD+N | 0.000174%, -115.2 dB; VIN=22 dBu (9.7516 VRMS), FIN=1 kHz, VS=±18 V, 90 kHz measurement bandwidth |
| Intermodulation Distortion | 0.0005%, -106.1 dB; SMPTE and DIN two-tone, 4:1, 60 Hz and 7 kHz, VO=3 VRMS, 90 kHz measurement bandwidth |
| Intermodulation Distortion | 0.00066%, -103.6 dB; CCIF twin-tone, 19 kHz and 20 kHz, VO=3 VRMS, 90 kHz measurement bandwidth |
| Slew Rate | 10 V/µs; TA=25°C, VS=±2.25 V to ±18 V, VCM=VOUT=midsupply, RL=2 kΩ |
| Full-Power Bandwidth | 1.59 MHz; VO=1 VP |
| Phase Margin | 71°; CL=20 pF |
| Phase Margin | 54°; CL=200 pF |
| Settling Time | 2.2 µs; to 0.01%, VS=±18 V, 10 V step |
| Overload Recovery Time | 330 ns; TA=25°C, VS=±2.25 V to ±18 V, RL=2 kΩ |
| Channel Separation | 140 dB; f=1 kHz, REF and COM pins connected to ground |
| Channel Separation | 130 dB; f=1 kHz, REF and COM pins connected to VMID(OUT) |
| EMI/RFI Filter Corner Frequency | 80 MHz; integrated EMI/RFI filter |
| Output Voltage Noise | 4.5 µVRMS, -104.7 dBu; f=20 Hz to 20 kHz, no weighting |
| Output Voltage Noise Density | 47 nV/√Hz; f=100 Hz |
| Output Voltage Noise Density | 31 nV/√Hz; f=1 kHz |
| Output Offset Voltage | ±1 mV typ, ±3 mV max; TA=25°C |
| Output Offset Voltage | ±4 mV max; TA=-40°C to +125°C |
| 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; TA=25°C, VS=±2.25 V to ±18 V |
| Gain | 1 V/V; TA=25°C, VS=±2.25 V to ±18 V |
| Gain Error | 0.04% typ, 0.05% max; TA=25°C |
| Gain Error | 0.05% typ, 0.06% max; TA=-40°C to +125°C |
| Gain Nonlinearity | 1 ppm typ, 5 ppm max; VS=±18 V, -10 V < VO < 10 V |
| Common-Mode Voltage Range | (V–)+0.25 V to (V+)-2 V; input voltage range |
| CMRR | 85 dB min, 91 dB typ; (V–)+0.25 V ≤ VCM ≤ (V+)-2 V, REF and COM pins connected to ground, VS=±18 V |
| CMRR Over Temperature | 82 dB min, 89 dB typ; TA=-40°C to +125°C, REF and COM pins connected to ground, VS=±18 V |
| CMRR | 82 dB min, 86 dB typ; (V–)+0.25 V ≤ VCM ≤ (V+)-2 V, REF and COM pins connected to VMID(OUT), VS=±18 V |
| CMRR Over Temperature | 76 dB min, 84 dB typ; TA=-40°C to +125°C, REF and COM pins connected to VMID(OUT), VS=±18 V |
| CMRR With Source Resistance Mismatch | 84 dB typ; (V–)+0.25 V ≤ VCM ≤ (V+)-2 V, REF and COM pins connected to ground, VS=±18 V, RS mismatch=20 Ω |
| Differential Input Resistance | 850 kΩ min, 1000 kΩ typ, 1150 kΩ max; TA=25°C, VS=±2.25 V to ±18 V |
| Common-Mode Input Resistance | 212.5 kΩ min, 250 kΩ typ, 287.5 kΩ max; TA=25°C, VS=±2.25 V to ±18 V |
| Input Resistance Mismatch | 0.01% typ, 0.25% max; TA=25°C, VS=±2.25 V to ±18 V |
| Supply Divider Nominal Output Voltage | [(V+)+(V–)]/2 V; VMID output nominal voltage |
| Supply Divider Output Voltage Offset | 2 mV typ, 4 mV max; VMID(IN)=((V+)+(V–))/2 |
| Supply Divider Input Impedance | 250 kΩ; VMID(IN) pin, f=1 kHz |
| Supply Divider Output Resistance | 0.35 Ω; VMID(OUT) pin |
| Supply Divider Output Voltage Noise | 1.56 µVRMS; 20 Hz to 20 kHz, CMID=1 µF |
| Supply Divider Output Capacitive Load Limit | 150 pF; phase margin >45°, RISO=0 Ω |
| Output Voltage Swing From Positive Rail | 350 mV; RL=2 kΩ |
| Output Voltage Swing From Positive Rail | 1100 mV; RL=600 Ω |
| Output Voltage Swing From Negative Rail | 430 mV; RL=2 kΩ |
| Output Voltage Swing From Negative Rail | 1300 mV; RL=600 Ω |
| Output Impedance | <1 Ω; f≤100 kHz, IOUT=0 A |
| Short-Circuit Current | ±75 mA; VS=±18 V |
| Quiescent Current | 4.6 mA min, 6 mA typ, 6.9 mA max; INA1651, IOUT=0 A, TA=25°C |
| Quiescent Current Over Temperature | 8 mA max; INA1651, IOUT=0 A, TA=-40°C to +125°C |
| Pin 1 Function | VCC; positive highest power supply pin |
| Pin 14 Function | VEE; negative lowest power supply pin |
| Pin 2 Function | IN+ A; noninverting input, channel A |
| Pin 4 Function | IN- A; inverting input, channel A |
| Pin 13 Function | OUT A; output, channel A |
| Pin 12 Function | REF A; reference input, channel A; must be driven from a low impedance |
| Pin 10 Function | VMID(OUT); buffered output of internal supply divider |
| Pin 11 Function | VMID(IN); input node of internal supply divider; connect capacitor to reduce supply divider noise |
| Datasheet Status | request_only |
Product Overview
The INA1651 is a Texas Instruments single-channel audio line receiver for Signal_Chain designs. It uses a 1 V/V gain structure and supports differential audio input operation with 850 kΩ minimum, 1000 kΩ typical, and 1150 kΩ maximum differential input resistance at 25°C. The device is specified for a recommended 4.5 V to 36 V total supply range, or ±2.25 V to ±18 V, and an operating temperature range of -40°C to +125°C.
Audio performance parameters include 2.7 MHz small-signal bandwidth, 1.59 MHz full-power bandwidth at 1 VP, 10 V/µs slew rate, and 2.2 µs settling time to 0.01% for a 10 V step at ±18 V. Noise and distortion data include 4.5 µVRMS, -104.7 dBu output voltage noise from 20 Hz to 20 kHz, and THD+N results down to -115.2 dB under the stated 22 dBu, 1 kHz, ±18 V condition.
The device is supplied in a 14-pin TSSOP (PW) package. Pin functions include VCC, VEE, IN+ A, IN- A, OUT A, REF A, VMID(OUT), and VMID(IN). The REF A pin must be driven from a low impedance, and VMID(IN) can use a capacitor to reduce supply-divider noise.
Key Features
- Single-channel audio line receiver architecture
- 1 V/V gain at specified operating conditions
- 1 MΩ typical differential input impedance
- 2.7 MHz small-signal bandwidth
- 10 V/µs slew rate with 2 kΩ load
- -104.7 dBu unweighted output noise
- 91 dB typical CMRR with REF and COM grounded
- Integrated 80 MHz EMI/RFI filter
- Recommended ±2.25 V to ±18 V supply range
- 14-pin TSSOP package, 4.40 mm x 5.00 mm body
Typical Applications
- Balanced audio line receiving
- Differential audio input stages
- Audio signal-chain interfaces
- Line-level audio receiver circuits
- Midsupply-referenced audio paths
- Systems needing integrated EMI/RFI filtering
Procurement Notes
When requesting a quote for INA1651, 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 INA1651?
The INA1651 is a Texas Instruments single-channel audio line receiver in the Signal_Chain category. It provides 1 V/V gain and is supplied in a 14-pin TSSOP (PW) package with a 4.40 mm x 5.00 mm nominal body.
What supply range does the INA1651 support?
The recommended supply range is 4.5 V to 36 V total supply voltage, equivalent to ±2.25 V to ±18 V. The specified recommended operating temperature range is -40°C to +125°C.
What are the key audio performance specifications?
Key listed specifications include 2.7 MHz small-signal bandwidth, 10 V/µs slew rate, -104.7 dBu unweighted output noise from 20 Hz to 20 kHz, and THD+N of -120 dB under the stated 22 dBu, 1 kHz condition.
Which package and pins are specified for INA1651?
The device uses a 14-pin TSSOP (PW) package. Listed pin functions include VCC on pin 1, VEE on pin 14, IN+ A on pin 2, IN- A on pin 4, OUT A on pin 13, and REF A on pin 12.
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.