PCM6260-Q1 Automotive 6-Channel Audio Analog-to-Digital Converter (ADC)
Author: EIS Release Date: Mar 22, 2021
Texas Instruments' ADC features integrated programmable mic bias, boost, and input diagnostics
Texas Instruments' 6-channel PCM6260-Q1 is a high-performance audio ADC that supports analog input signals up to 10 VRMS. The PCM6260-Q1 supports line and microphone inputs and allows for single-ended and differential input configurations. The PCM6260-Q1 integrates an efficient boost converter to generate a high-voltage microphone bias using an external, low-voltage, 3.3 V supply.
The PCM6260-Q1 integrates programmable channel gain, digital volume control, a low-jitter phase-locked loop (PLL), a programmable high-pass filter (HPF), biquad filters, low-latency filter modes, and allows for sample rates up to 768 kHz. The PCM6260-Q1 supports time-division multiplexing (TDM), I2S, or left-justified (LJ) audio formats, and can be controlled with either the I2C or SPI interface. These integrated high-performance features and the single 3.3 V supply operation make the PCM6260-Q1 an excellent choice for space-constrained automotive systems.
- AEC-Q100 qualified for automotive applications
- Temperature Grade 1: -40°C ≤ TA ≤ +125°C
- ADC performance:
- Line differential input dynamic range: 110 dB
- Microphone differential input dynamic range: 110 dB
- THD+N: -95 dB
- Channel summing mode supports high SNR
- ADC input voltage:
- Differential, 10 VRMS full-scale inputs
- Single-ended, 5 VRMS full-scale inputs
- ADC sample rate (fS): 8 kHz to 768 kHz
- Programmable channel settings:
- Channel gain: 0 dB to 42 dB, 1 dB steps
- Digital volume control: 100 dB to 27 dB
- Gain calibration with 0.1 dB resolution
- Phase calibration with 163 ns resolution
- Programmable microphone bias (5 V to 9 V):
- With integrated efficient boost converter, or
- With external high voltage HVDD supply
- Programmable microphone input fault diagnostics:
- Open inputs or shorted inputs
- Short-to-ground, MICBIAS, or VBAT
- Microphone bias over current protection
- Low-latency signal processing filter selection
- Programmable HPF and biquad digital filters
- I2C or SPI controls
- Audio serial data interface:
- Format: TDM, I2S, or left-justified (LJ)
- Word length: 16 bits, 20 bits, 24 bits, or 32 bits
- Master or slave interface
- Single-supply, 3.3 V operation
- I/O supply operation: 3.3 V or 1.8 V
- Power consumption: <20 mW/channel at 48 kHz
- Automotive active noise cancellation
- Automotive head units
- Digital cockpit processing units
- Automotive external amps