WM8778 Datasheet – Stereo Audio CODEC

Part Number : WM8778

Function : 24-bit, 192kHz Stereo CODEC

Package : 28-lead SSOP Type

Manufacturers : Wolfson Microelectronics plc

Image :

WM8778 datasheet

 

Description :

The WM8779 is a high performance, stereo audio CODEC. It is ideal for surround sound processing applications for home hi-fi, DVD-RW and other audio visual equipment.

Text :
24-bit, 192kHz Stereo CODEC WM8778

Description

The WM8778 is a high performance, stereo audio CODEC. It is ideal for surround sound processing applications for home hi-fi, DVD-RW and other audio visual equipment. The stereo 24-bit multi-bit sigma delta ADC has programmable gain with automatic level 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. A multiplexor after the DAC allows the selection of either an external analogue input or DAC playback into the line outputs. The WM8778 supports fully independent sample rates for the ADC and DAC. The audio data interface supports I2S, left justified, right justified and DSP formats. The device is controlled in software via a 2 or 3 wire serial interface which provides access to all features including volume controls, mutes, and de-emphasis facilities. It can also be controlled in hardware which gives access to the most commonly used features. Control interface selection is done via the MODE pin (trilevel).

Features

• Audio Performance − 108dB 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 Automatic Level Control (ALC) or Limiter on ADC input.

• Stereo DAC with analogue line outputs.

• 3-Wire SPI Compatible or 2-wire Serial Control Interface

• Hardware Control Mode

• Master or Slave Clocking Mode

• Programmable Audio Data Interface Modes − I2S, Left, Right Justified or DSP − 16/20/24/32 bit Word Lengths

• Analogue Bypass Path Feature

• 2.7V to 5.5V Analogue, 2.7V …

Other data sheets within the file :

WM8778SEDS-RV, WM8778SEDS-V

WM8778 Datasheet PDF Download

 

WM8778 pdf

 

PCM2900C Datasheet – Stereo Audio Codec

Part Number : PCM2900C

Function : Stereo Audio Codec with USB Interface, Single-Ended Analog Input/Output, and S/PDIF

Package : SSOP-28 type

Manufacturers : Texas Instruments

Pinouts :

PCM2900C datasheet

 

Description :

The PCM2900C / PCM2902C are Texas Instruments’single-chip, USB, stereo audio codecs with a USB-compliant full-speed protocol controller and S/PDIF (PCM2902C only). The USB protocol controller requires no software code. The PCM2900C / PCM2902C employ SpAct architecture, TI’s unique system that recovers the audio clock from USB packet data. On-chip analog PLLs with SpAct architecture enable playback and record with low clock jitter as well as independent playback and record sampling rates.

Features

• PCM2900C: Without S/PDIF
• PCM2902C: With S/PDIF
• On-Chip USB Interface :
– With Full-Speed Transceivers
– Fully Compliant with USB 2.0 Specification
– Certified by USB-IF
– Partially Programmable Descriptors
– USB Adaptive Mode for Playback
– USB Asynchronous Mode for Record
– Bus Powered
• 16-Bit Delta-Sigma ADC and DAC
• Sampling Rate:
– DAC: 32 kHz, 44.1 kHz, 48 kHz
– ADC: 8 kHz, 11.025 kHz, 16 kHz, 22.05 kHz,32 kHz, 44.1 kHz, 48 kHz
• On-Chip Clock Generator with Single 12-MHz Clock Source
• Single Power Supply:
– 5 V Typical (VBUS) • Stereo ADC:
– Analog Performance at VBUS = 5 V:
– THD+N = 0.01%
– SNR = 89 dB
– Dynamic Range = 89 dB
– Decimation Digital Filter:
– Passband Ripple = ±0.05 dB
– Stop Band Attenuation = –65 dB
– Single-Ended Voltage Input
– Antialiasing Filter Included
– Digital HPF Included

 

Other data sheets within the file :

PCM2900CDB, PCM2900CDBR, PCM2902C, PCM2902CDB

 

PCM2900C Datasheet PDF Download


PCM2900C pdf