AD1836A_15 Datasheet, PDF (1/24 Pages) Analog Devices – Multichannel 96 kHz Codec

Data Sheet
Multichannel 96 kHz Codec
AD1836A
FEATURES
APPLICATIONS
5 V multichannel audio system
Accepts 16-/18-/20-/24-bit data
Supports 24-bit and 96 kHz sample rate
Multibit Σ-∆ modulators with data directed
scrambling
Differential output for optimum performance
ADCs: –92 dB THD + N, 105 dB SNR and dynamic range
DACs: –95 dB THD + N, 108 dB SNR and dynamic range
On-chip volume control with "auto-ramp" function
Programmable gain amplifier for ADC input
Hardware and software controllable clickless mute
Digital de-emphasis processing
Supports 256 × fS, 512 × fS, or 768 × fS master clock
Power-down mode plus soft power-down mode
Flexible serial data port with right justified, left justified, I²S
compatible, and DSP serial port modes
TDM interface mode supports 8 in/8 out using a single
SHARC® SPORT
52-lead MQFP (PQFP) plastic package
Home theater systems
Automotive audio systems
DVD recorders
Set-top boxes
Digital audio effects processors
PRODUCT OVERVIEW
The AD1836A is a high performance, single-chip codec that
provides three stereo DACs and two stereo ADCs using Analog
Devices, Inc., patented multibit Σ-Δ architecture. An SPI® port
is included, allowing a microcontroller to adjust volume and
many other parameters. The AD1836A operates from a 5 V
supply, with provision for a separate output supply to interface
with low voltage external circuitry. The AD1836A is available in
a 52-lead MQFP (PQFP) package.
FUNCTIONAL BLOCK DIAGRAM
CCLK CDATA CLATCH COUT
MCLK
DLRCLK
DBCLK
DSDATA1
DSDATA2
DSDATA3
ALRCLK
ABCLK
ASDATA1
ASDATA2
ADC1L
ADC1R
CAPL1
ADC2L1
ADC2L2
CAPL2
CAPR1
ADC2R1
ADC2R2
CAPR2
SERIAL
DATA
I/O
PORT
CONTROL PORT
CLOCK
VOLUME
VOLUME
DIGITAL
FILTER
-
DAC
-
ADC1L
48kHz/96kHz
-
ADC1R
48kHz/96kHz
DIGITAL
FILTER
48kHz/96kHz
DIGITAL
FILTER
48kHz/96kHz
PGA
-
ADC2L
48kHz
DIGITAL
FILTER
48kHz
VOLUME
VOLUME
VOLUME
VOLUME
DIGITAL
FILTER
DIGITAL
FILTER
-
DAC
-
DAC
PGA
-
ADC2R
48kHz
DIGITAL
FILTER
48kHz
PD/RST
2
AVDD
Figure 1.
4
AGND
3
DVDD
V_REF
2
DGND
DAC1L
DAC1R
DAC2L
DAC2R
DAC3L
DAC3R
FILTD
FILTR
Rev. A
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