Packaging information
| Package | Pins HSSOP (DKQ) | 56 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 1,000 | LARGE T&R |
Features for the TAS6421-Q1
- Advanced load diagnostics
- DC Diagnostics run without input clocks
- AC Diagnostic for tweeter detection with impedance and phase response
- Easily meet CISPR25-L5 EMC specification
- AEC-Q100 Qualified
for automotive applications
- Temperature grade: –40°C to +125°C
- Audio
inputs
- 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
- Single-channel bridge-tied load (BTL)
- 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
- 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 with Host-independent
operation
- Output open and shorted load
- Output-to-battery or ground shorts
- Line output detection Up to 6 kΩ
- Protection
- Output current limiting and short protection
- 40 V Load dump
- Open ground and power tolerant
- Overtemperature warning and shutdown
- Undervoltage and overvoltage, DC Offset
- General operation
- 4.5 V to 26.4 V supply voltage
- I2C control with 4 address options
- Clip detection (latching or non-latching)
Description for the TAS6421-Q1
TAS6421-Q1 device is a mono-channel digital-input Class-D Burr-Brown™ audio amplifier that implements a 2.1 MHz PWM switching frequency enabling a cost-optimized solution for 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. TAS6421-Q1 is footprint and pin-compatible with TAS642x-Q1 family devices to allow for the flexibility to easily support multiple system configurations with minimal redesign effort.
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.
TAS6421-Q1 provides one channel at 27 W into 4 Ω at 10% THD+N, 45 W into 2 Ω at 10% THD+N from a 14.4 V supply or 75 W into 4 Ω at 10% THD+N from a 25 V supply.
For pin compatible two- and four-channel devices see the TAS6422-Q1, TAS6424L-Q1, TAS6424M-Q1 and TAS6424-Q1.