Specifications
| Type | Description |
|---|---|
| Part Number | TAS6424E |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | DKQ HSSOP-56 with exposed thermal pad, 18.41 mm x 7.49 mm body |
| Automotive Qualification | AEC-Q100 qualified, automotive applications, temperature grade 1 |
| Operating Ambient Temperature Range | -40 to 125 °C, temperature grade 1 / recommended operating conditions |
| Channel Count | 4 channels, digital-input Class-D audio amplifier |
| Audio Input Interface | 4-channel I2S or 4/8-channel TDM |
| Input Sample Rates | 44.1 kHz, 48 kHz, 96 kHz |
| Input Audio Word Length | 16-bit to 32-bit, I2S and TDM formats |
| Output Configuration | Four-channel BTL or two-channel PBTL |
| Output Switching Frequency | Up to 2.1 MHz |
| Output Power | 45 W, 10% THD into 2 ohm at 14.4 V, BTL |
| Output Power | 75 W, 10% THD into 4 ohm at 25 V, BTL |
| Output Power | 150 W, 10% THD into 2 ohm at 25 V, PBTL |
| THD+N | <0.009%, 1 W into 4 ohm at 14.4 V, BTL |
| Output Noise | 30 uVrms, into 4 ohm at 14.4 V, BTL |
| Crosstalk | -97 dB, into 4 ohm at 14.4 V, BTL |
| Supply Voltage Range | 4.5 to 26.4 V, general operation / PVDD recommended range |
| I2C Address Options | 4 address options |
| Load Dump Protection | 40 V, transient supply voltage t <= 400 ms |
| Device Option Output Current Limit | 7.2 A typ, TAS6424E-Q1 device option |
| Device Option Clip Detect | Supports latched and non-latched clip detect, WARN pin register-configurable function |
| Device Option Output Power | 27 W, 4 ohm BTL, 14.4 V, 10% THD |
| Absolute Maximum PVDD/VBAT DC Supply Voltage | -0.3 to 30 V, relative to GND, over operating free-air temperature range |
| Absolute Maximum Transient Supply Voltage | -1 to 40 V, PVDD/VBAT, t <= 400 ms exposure |
| Absolute Maximum Supply-Voltage Ramp Rate | 75 V/ms, PVDD, VBAT |
| Absolute Maximum VDD Supply Voltage | -0.3 to 3.5 V, relative to GND |
| Absolute Maximum Current per Pin | +/-8 A, PVDD, VBAT, OUT_xP, OUT_xM, GND pins |
| Absolute Maximum Pulsed Supply Current per PVDD Pin | +/-12 A, t < 100 ms, one shot |
| Logic Input Voltage Range | -0.3 to VDD + 0.5 V, SCL, SDA, SDIN1, SDIN2, MCLK, BCLK, LRCLK, MUTE, STANDBY, I2C_ADDRx |
| Maximum Voltage Between GND Pins | -0.3 to 0.3 V, absolute maximum rating |
| Maximum Operating Junction Temperature | -55 to 150 °C, absolute maximum rating |
| Storage Temperature | -55 to 150 °C, absolute maximum rating |
| Recommended PVDD Range | 4.5 to 26.4 V, output FET supply voltage relative to GND |
| Recommended VBAT Range | 4.5 to 18 V, 14.4 V typ, battery supply voltage input relative to GND |
| Recommended VDD Range | 3.0 to 3.5 V, 3.3 V typ, DC logic supply relative to GND |
| Recommended Junction Temperature Range | -40 to 150 °C, adequate thermal design required |
| Minimum Speaker Load Impedance | 2 to 4 ohm, BTL mode |
| Minimum Speaker Load Impedance | 1 to 2 ohm, PBTL mode |
| I2C Pullup Resistance | 1 to 10 kohm, 4.7 kohm typ, SDA and SCL pins |
| External Bypass Capacitance | 1 uF, pins 2, 3, 5, 6, 8, 19 |
| GVDD External Capacitance | 2.2 uF, pins 9 and 10 |
| OUT Pin Capacitance to GND | 1 to 3.3 uF, limit set by DC-diagnostic timing |
| Minimum Output Filter Inductance | 1 uH, minimum inductance at ISD current levels |
| ESD Rating HBM | +/-3000 V, per AEC Q100-002 |
| ESD Rating CDM | +/-500 V, all pins, per AEC Q100-011 |
| ESD Rating CDM Corner Pins | +/-750 V, pins 1, 22, 23, and 44 |
| Thermal Resistance Junction-to-Ambient | 37.3 °C/W, DKQ HSSOP-56, JEDEC standard 4-layer PCB |
| Thermal Resistance Junction-to-Case Top | 0.4 °C/W, DKQ HSSOP-56, JEDEC standard 4-layer PCB |
| Thermal Resistance Junction-to-Board | 15.2 °C/W, DKQ HSSOP-56, JEDEC standard 4-layer PCB |
| Junction-to-Top Characterization Parameter | 0.2 °C/W, DKQ HSSOP-56, JEDEC standard 4-layer PCB |
| Junction-to-Board Characterization Parameter | 14.7 °C/W, DKQ HSSOP-56, JEDEC standard 4-layer PCB |
| Datasheet Status | request_only |
Product Overview
The TAS6424E is a Texas Instruments digital-input Class-D audio amplifier for automotive audio signal-chain designs. It provides 4 output channels and accepts 4-channel I2S or 4/8-channel TDM audio inputs with 44.1 kHz, 48 kHz, and 96 kHz sample rates and 16-bit to 32-bit word lengths. Output configuration can be four-channel BTL or two-channel PBTL, with PWM switching specified up to 2.1 MHz.
Power ratings include 45 W at 10% THD into 2 ohm from 14.4 V in BTL, 75 W at 10% THD into 4 ohm from 25 V in BTL, and 150 W at 10% THD into 2 ohm from 25 V in PBTL. At 1 W into 4 ohm from 14.4 V in BTL, THD+N is specified below 0.009%, with 30 uVrms output noise and -97 dB crosstalk.
The device uses a DKQ HSSOP-56 package with exposed thermal pad. Recommended operating supplies include 4.5 to 26.4 V PVDD, 4.5 to 18 V VBAT, and 3.0 to 3.5 V VDD. Assembly and layout planning should account for the listed bypass, GVDD, output capacitance, filter inductance, ESD, and thermal parameters.
Key Features
- AEC-Q100 qualified for automotive temperature grade 1
- Four-channel digital-input Class-D audio amplifier
- 4-channel I2S or 4/8-channel TDM audio input
- 44.1 kHz, 48 kHz, and 96 kHz sample rates
- 16-bit to 32-bit input audio word length
- Four-channel BTL or two-channel PBTL output configuration
- PWM output switching frequency up to 2.1 MHz
- 45 W BTL output into 2 ohm at 14.4 V
- 150 W PBTL output into 2 ohm at 25 V
- 4.5 to 26.4 V recommended PVDD range
- 40 V load dump transient protection
- DKQ HSSOP-56 package with exposed thermal pad
Typical Applications
- Automotive audio amplifier systems
- Digital-input car audio designs
- Four-channel BTL speaker outputs
- Two-channel PBTL speaker outputs
- I2S audio signal-chain designs
- TDM audio signal-chain designs
- AEC-Q100 temperature grade 1 applications
Procurement Notes
When requesting a quote for TAS6424E, 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 TAS6424E?
The TAS6424E is a Texas Instruments 4-channel Class-D audio amplifier for Signal_Chain applications. It supports digital audio input through 4-channel I2S or 4/8-channel TDM interfaces.
What output configurations does TAS6424E support?
The device supports four-channel BTL operation or two-channel PBTL operation. Extracted ratings include 45 W BTL into 2 ohm at 14.4 V and 150 W PBTL into 2 ohm at 25 V, both at 10% THD.
What supplies are recommended for the TAS6424E?
Recommended supply ranges are 4.5 to 26.4 V for PVDD, 4.5 to 18 V for VBAT with 14.4 V typical, and 3.0 to 3.5 V for VDD with 3.3 V typical.
What package is specified for TAS6424E?
The package is DKQ HSSOP-56 with an exposed thermal pad and an 18.41 mm x 7.49 mm body. Thermal data includes 37.3 °C/W junction-to-ambient 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 7, 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.