Automotive 45-W, 2-MHz, 4-channel, 4.5- to 18-V digital input Class-D audio amplifier
Product details
Parameters
Package | Pins | Size
Features
- AEC-Q100 Qualified for automotive applications
- Temperature grade 1: –40°C to +125°C TA
- Advanced load diagnostics
- DC Diagnostics run without input clocks
- AC Diagnostic for tweeter detection with impedance and phase response
- Easily meets CISPR25-L5 EMC specifications
- Audio inputs
- 4 Channel I2S or 4/8-channel TDM input
- Input sample rates: 44.1 kHz, 48 kHz, 96 kHz
- Input formats: 16-bit to 32-bit I2S, and TDM
- Audio Outputs
- Four-channel bridge-tied load (BTL)
- Two-channel parallel BTL (PBTL)
- Up to 2.1 MHz output switching frequency
- 27 W, 10% THD Into 4 Ω at 14.4 V BTL
- 45 W, 10% THD Into 2 Ω at 14.4 V BTL
- 80 W, 10% THD Into 2 Ω at 18 V PBTL
- Audio performance into 4 Ω at 14.4 V BTL
- THD+N < 0.02% at 1 W
- 42 µVRMS output noise
- –90 dB crosstalk
- Load diagnostics
- Output open and shorted load
- Output-to-battery or ground shorts
- Line output detection up to 6 kΩ
- Host-independent operation
- Protection
- Output current limiting and short protection
- 40 V Load dump
- Open ground and power tolerant
- DC offset
- Over-temperature
- Undervoltage and overvoltage
- General Operation
- 4.5 V to 18 V supply voltage
- I2C Control with 4 address options
- Latched & Non-Latched Clip Detect
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Description
The TAS6424MS-Q1 device is a four-channel digital-input Class-D audio amplifier that implements a 2.1 MHz PWM switching frequency enabling a cost-optimized solution in a very small PCB size, full operation down to 4.5 V for start/stop events, and exceptional sound quality with up to 40 kHz audio bandwidth.
The output switching frequency can be set either above the AM band, which eliminates AM-band interferences and reduces output filtering and cost, or below the AM band to optimize efficiency.
The device has a built-in load diagnostic function for detecting and diagnosing misconnected outputs as well as detection of AC-coupled tweeters to help to reduce test time during the manufacturing process.
The TAS6424MS-Q1 Class-D audio amplifier is designed for use in automotive head units and external amplifier modules. For pin compatible one, two and four-channel devices see the the Device Options table.
Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | TAS6424MS-Q1 45-W, 2-MHz Digital Input 4-channel Automotive Class-D Burr-Brown datasheet | Nov. 02, 2020 |
| User guide | TAS6424MS-Q1 Evaluation Module User's Guide | Oct. 06, 2020 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- 2.1-Mhz switching frequency
- 4-channel 25-W/channel at 10% THD+N into 4-Ω with a 14.4-V supply
- I2C diagnostics and protection
- CISPR25, class 5 Radiated/conducted emission compliant
- Optical SPDIF, USB and PSIA (external I2S) input options
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| HSSOP (DKQ) | 56 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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