Features: • Audio Performance
− 110dB SNR ('A'weighted @ 48kHz) DAC
− 102dB SNR ('A'weighted @ 48kHz) ADC
• DAC Sampling Frequency: 32kHz 192kHz
• ADC Sampling Frequency: 32kHz 96kHz
• Stereo ADC input analogue gain adjust from +24dB to 21dB in 0.5dB steps
• ADC digital gain from -21.5dB to -103dB in 0.5dB steps
• Programmable Limiter on ADC input.
• Stereo DAC with differential analogue line outputs.
• 2-wire Serial Control Interface
• Master or Slave Clocking Mode
• Programmable Audio Data Interface Modes
− I2S, Left, Right Justified or DSP
− 16/20/24/32 bit Word Lengths
• 4.5V to 5.5V Analogue, 2.7V to 3.6V Digital supply Operation
• 28-pin SSOP Package
Application• Surround Sound AV Processors and Hi-Fi systems
• DVD-RW
Pinout
Specifications
| CONDITION |
MIN |
MAX |
| Digital supply voltage, DVDD |
-0.3V |
+3.63V |
| Analogue supply voltage, AVDD |
-0.3V |
+7V |
| Voltage range digital inputs |
DGND -0.3V |
DVDD + 0.3V |
| Voltage range analogue inputs |
AGND -0.3V |
AVDD +0.3V |
| Master Clock Frequency |
|
37MHz |
| Operating temperature range, TA |
-25°C |
+85°C |
| Storage temperature |
-65°C |
+150°C |
Notes:
1. Analogue and digital grounds must always be within 0.3V of each other.
DescriptionThe WM8591 is a high performance, stereo audio CODEC with single-ended inputs and differential outputs. It is ideal for surround sound processing applications for home hi-fi, DVDRW and other audio visual equipment.
The stereo 24-bit multi-bit sigma delta ADC has programmable gain with limiting control. Digital audio output word lengths from 16-32 bits and sampling rates from 32kHz to 96kHz are supported.
A stereo multi-bit sigma delta DAC is used with digital audio input word lengths from 16-32 bits and sampling rates from 32kHz to 192kHz.
The WM8591 supports fully independent sample rates for the ADC and DAC. The audio data interface supports I2S, left justified, right justified and DSP formats.
The WM8591 is controlled in software via a 2-wire serial interface which provides access to all features including volume controls,mutes, and de-emphasis facilities. The device is available in a 28-pin SSOP package
WM8591 Data Sheet
