Specifications
| Type | Description |
|---|---|
| Part Number | TAS2120 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | 26-pin QFN, 0.4 mm pitch, 4 mm x 3.5 mm |
| Output Power | 8.2 W rms; 1% THD+N |
| Integrated Boost Voltage | 14.75 V; Class-H boost |
| Boost Current Limit | 5.1 A max; integrated boost |
| Efficiency | Up to 91%; POUT=1 W, 8 ohm load |
| Idle Channel Power | 14.7 mW; noise gate off |
| Idle Channel Power | 5.3 mW; noise gate on |
| Class-H Boost Step Size | 33 mV; advanced Class-H boost operation |
| Idle Channel Noise | 4.2 uV A-weighted; high performance audio channel |
| Dynamic Range | 114.4 dB; high performance audio channel |
| THD+N | -90 dB; high performance audio channel |
| Chip-to-Chip Group Delay Matching | <1 us; audio channel matching |
| Battery Current Limit Step Size | 39 mA; programmable battery current limit |
| VBAT Operating Voltage | 2.5-5.5 V; battery supply |
| VBAT_SNS Operating Voltage | 2.5-10.0 V; battery sense supply |
| VDD Operating Voltage | 1.65-1.95 V; recommended operating condition |
| IOVDD Operating Voltage | 1.8 V or 3.3 V; digital IO supply |
| Audio Interface | I2S/TDM, 8 channels; digital audio interface |
| Sample Rate Detection | 16-192 kHz; auto clock rate detection |
| Absolute Maximum PVDD Supply Voltage | -0.3 to 19 V; operating free-air temperature range |
| Absolute Maximum VBAT Supply Voltage | -0.3 to 6 V; operating free-air temperature range |
| Absolute Maximum VBAT_SNS Voltage | -0.3 to 12 V; operating free-air temperature range |
| Absolute Maximum VDD Supply Voltage | -0.3 to 2 V; operating free-air temperature range |
| Absolute Maximum IOVDD Supply Voltage | -0.3 to 6 V; operating free-air temperature range |
| Absolute Maximum SW Pin Voltage | -0.7 to 19 V; boost switching pin |
| Absolute Maximum Class-D Output Voltage | -0.7 to 19 V; OUTP, OUTM pins |
| Absolute Maximum Storage Temperature | -65 to 150 degC; storage |
| HBM ESD Rating | +/-2000 V; ANSI/ESDA/JEDEC JS-001, all pins |
| CDM ESD Rating | +/-500 V; ANSI/ESDA/JEDEC JS-002, all pins |
| Battery Supply Voltage | min 2.5 V, typ 3.6 V, max 5.5 V; recommended operating condition |
| Battery Supply Voltage in 2S Mode | min 3 V, typ 3.6 V, max 5.5 V; 2S mode operation |
| Battery Sense Pin Voltage | min 2.5 V, max 10 V; recommended operating condition |
| 2S Battery Voltage | min 4.7 V, typ 7.2 V, max 10 V; connected to SW pin through inductor |
| Amplifier Supply Voltage | min VBAT, typ 12 V, max 15 V; PVDD recommended operating condition |
| Speaker Resistance | min 3.2 ohm, typ 8 ohm, max 38.4 ohm; recommended operating condition |
| Speaker Inductance | min 5 uH, typ 33 uH, max 100 uH; recommended operating condition |
| Ambient Temperature | -40 to 85 degC; recommended operating condition |
| Junction Temperature | -40 to 150 degC; recommended operating condition |
| Junction-to-Ambient Thermal Resistance | 51.5 degC/W; HR-QFN 26 pins, JEDEC standard 4-layer PCB |
| Maximum Output Power | 6.4 W; 1% THD+N, internal boost 1S mode, RL=8 ohm + 33 uH |
| Maximum Output Power | 8.2 W; 1% THD+N, internal boost 1S mode, RL=4 ohm + 33 uH, VBAT=4.4 V |
| Maximum Output Power | 9.8 W; 10% THD+N, internal boost 1S mode, RL=4 ohm + 33 uH, VBAT=4.4 V |
| THD+N | 0.003%; POUT=1 W, RL=8 ohm + 33 uH |
| Datasheet Status | request_only |
Product Overview
The TAS2120 is a Texas Instruments mono digital input Class-D speaker amplifier for Signal_Chain audio designs. It combines a digital audio interface with an integrated Class-H boost stage, supporting I2S/TDM input across 8 channels and automatic sample-rate detection from 16 kHz to 192 kHz. The boost stage reaches 14.75 V with a 5.1 A maximum current limit and 33 mV Class-H boost step size.
Audio performance parameters include 8.2 W rms output power at 1% THD+N, 114.4 dB dynamic range, 4.2 uV A-weighted idle channel noise, and -90 dB THD+N for the high performance audio channel. Additional measured output conditions include 6.4 W at 1% THD+N into 8 ohm plus 33 uH, 8.2 W at 1% THD+N into 4 ohm plus 33 uH, and 9.8 W at 10% THD+N into 4 ohm plus 33 uH.
The device is supplied in a 26-pin QFN package with 0.4 mm pitch and 4 mm x 3.5 mm dimensions. Recommended operating conditions include VBAT from 2.5 V to 5.5 V, VDD from 1.65 V to 1.95 V, and ambient temperature from -40 degC to 85 degC.
Key Features
- 8.2 W rms output power at 1% THD+N
- Integrated 14.75 V Class-H boost operation
- 5.1 A maximum integrated boost current limit
- Up to 91% efficiency at 1 W into 8 ohm
- 4.2 uV A-weighted idle channel noise
- 114.4 dB dynamic range audio channel
- I2S/TDM digital audio interface with 8 channels
- 16 kHz to 192 kHz automatic sample-rate detection
- 2.5 V to 5.5 V VBAT operating range
- 26-pin QFN package, 4 mm x 3.5 mm
Typical Applications
- Battery-powered mono speaker amplification
- I2S/TDM digital audio output stages
- Class-D boosted speaker drive
- 1S battery audio amplifier designs
- 2S battery audio amplifier designs
- Compact QFN audio assemblies
- Low idle-power speaker channels
Procurement Notes
When requesting a quote for TAS2120, 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 TAS2120?
The TAS2120 is a Texas Instruments mono digital input Class-D speaker amplifier in the Signal_Chain category. It uses a digital I2S/TDM audio interface and includes integrated Class-H boost operation.
What output power does the TAS2120 support?
The extracted datasheet facts list 8.2 W rms output power at 1% THD+N. Additional measured conditions include 6.4 W at 1% THD+N into 8 ohm plus 33 uH and 9.8 W at 10% THD+N into 4 ohm plus 33 uH.
What supply ranges are specified for TAS2120 operation?
Recommended operating facts include VBAT from 2.5 V to 5.5 V, VBAT_SNS from 2.5 V to 10.0 V, VDD from 1.65 V to 1.95 V, and IOVDD operation at 1.8 V or 3.3 V.
What package is used for the TAS2120?
The TAS2120 is specified in a 26-pin QFN package with 0.4 mm pitch and 4 mm x 3.5 mm body size. Thermal data lists 51.5 degC/W junction-to-ambient resistance for the HR-QFN 26-pin package on a JEDEC standard 4-layer PCB.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 12, 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.