Packaging information
| Package | Pins WQFN (RTV) | 32 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 3,000 | LARGE T&R |
Features for the PCM6480-Q1
- AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C ≤ TA ≤ +125°C
- Simultaneous conversion of upto 8-channel audio
- 4-channel analog microphone or line inputs
- 4-channel digital PDM microphone inputs
- ADC performance:
- Line differential input dynamic range: 110 dB
- Microphone differential input dynamic range: 110 dB
- THD+N: –95 dB
- ADC analog 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:
- Analog input channel gain: 0 dB to 42 dB
- 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)
- Programmable microphone analog
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
Description for the PCM6480-Q1
The PCM6480-Q1 is a high-performance audio converter that supports simultaneous sampling of up to a 4-channel analog microphone or a line input with up to a 4-channel digital pulse density-modulation (PDM) microphone input. The device integration enables both in-cabin active noise cancellation (ANC) and voice recognition (VR) applications in a very efficient manner by simultaneously using the analog and digital microphone input sampling. The PCM6480-Q1 consists of high-performance, audio analog-to-digital converters (ADCs) that support analog input signals up to 10 VRMS. The device offers an integrated high-voltage, programmable microphone bias, and input diagnostic circuitry that allow direct connection to microphone-based automotive systems with full fault diagnostic capability for DC-coupled inputs. The device integrates an efficient boost converter to generate a high voltage microphone bias using an external, low-voltage, 3.3-V supply, which is a readily available supply in the system. The PCM6480-Q1 integrates the programable 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 PCM6480-Q1 supports time-division multiplexing (TDM), I2S, or left-justified (LJ) audio formats, and can be controlled with either the I2C or SPI interface.