Overview
The ADAU7002ACBZ-R7, produced by Analog Devices Inc., is a stereo Pulse Density Modulation (PDM) to Pulse Code Modulation (PCM) conversion IC. This device is designed to convert a stereo PDM bit stream into a PCM output, which can be transmitted via standard I2S or Time Division Multiplexed (TDM) serial audio interfaces. The ADAU7002 is particularly useful in applications requiring high-quality audio conversion from digital microphones or other PDM sources.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range (IOVDD) | 1.62 to 3.6 | V |
| Operating Current at 48 kHz and 1.8 V | 0.67 | mA |
| Shutdown Current | < 1 | μA |
| Output Sample Rate | 4 kHz to 96 kHz | |
| BCLK Frequency | 0.256 to 24.576 MHz | |
| PDM Clock Rate | 64× to 512× the LRCLK rate | |
| Bit Width (Internal and Output) | 20 Bits | |
| Temperature Range | -40°C to +85°C | |
| Package Type | 8-ball WLCSP (1.56 mm × 0.76 mm) |
Key Features
- Converts stereo PDM bit stream to PCM output in I2S or TDM format.
- Supports PDM clock rates of 64× to 512× the LRCLK rate.
- Automatic BCLK ratio detection and PDM clock generation.
- Low power consumption: 0.67 mA at 48 kHz and 1.8 V IOVDD supply.
- Automatic power down with BCLK removal.
- Halide-free, 8-ball WLCSP package.
- Commercial temperature range: -40°C to +85°C.
Applications
The ADAU7002ACBZ-R7 is suitable for various applications, including:
- Mobile computing devices.
- Portable electronics.
- Consumer electronics.
It is particularly useful in scenarios where high-quality audio conversion from digital microphones or other PDM sources is required.
Q & A
- What is the primary function of the ADAU7002ACBZ-R7?
The ADAU7002ACBZ-R7 converts a stereo PDM bit stream into a PCM output in I2S or TDM format.
- What are the supported output sample rates for the ADAU7002ACBZ-R7?
The output sample rates range from 4 kHz to 96 kHz.
- What is the power consumption of the ADAU7002ACBZ-R7 at 48 kHz and 1.8 V IOVDD supply?
The power consumption is 0.67 mA.
- How does the ADAU7002ACBZ-R7 handle power down?
The device automatically powers down when the BCLK is removed.
- What is the temperature range for the ADAU7002ACBZ-R7?
The device operates over a commercial temperature range of -40°C to +85°C.
- What package type is the ADAU7002ACBZ-R7 available in?
The device is available in an 8-ball WLCSP (1.56 mm × 0.76 mm) package.
- Can the ADAU7002ACBZ-R7 support multiple BCLK rates?
Yes, it supports BCLK rates of 64×, 128×, 192×, 256×, 384×, and 512× the LRCLK rate.
- What is the bit width of the internal and output data for the ADAU7002ACBZ-R7?
The bit width is 20 bits.
- Is the ADAU7002ACBZ-R7 suitable for mobile computing devices?
Yes, it is suitable for mobile computing devices, among other applications.
- How does the ADAU7002ACBZ-R7 handle PDM clock generation?
The device automatically generates a PDM clock output at 64× the LRCLK rate.
