AD1886A Codec Datasheet

AD1886A Datasheet, PDF, Equivalent


Part Number

AD1886A

Description

AC97 SoundMAX Codec

Manufacture

Analog Devices

Total Page 28 Pages
Datasheet
Download AD1886A Datasheet


AD1886A
a
AC’97 SoundMAX® Codec
AD1886A
AC’97 2.1 FEATURES
Variable Sample Rate Audio
Multiple Codec Configuration Options
External Audio Power-Down Control
AC’97 FEATURES
AC’97 2.2 Compliant
Greater than 90 dB Dynamic Range
Stereo Headphone Amplifier
Multibit -Converter Architecture for Improved S/N
Ratio Greater than 90 dB
16-Bit Stereo Full-Duplex Codec
Four Analog Line-Level Stereo Inputs for:
LINE-IN, CD, VIDEO, and AUX
Two Analog Line-Level Mono Inputs for Speakerphone
and PC BEEP
Mono MIC Input w/Built-In 20 dB Preamp, Switchable
from Two External Sources
High-Quality CD Input with Ground Sense
Stereo Line Level Outputs
Mono Output for Speakerphone or Internal Speaker
Power Management Support
48-Terminal LQFP Package
ENHANCED FEATURES
20-Bit SPDIF Output w/32 kHz, 44.1 kHz, and 48 kHz
Symbol Rates
Full Duplex Variable Sample Rates from 7040 Hz to
48 kHz with 1 Hz Resolution
Jack Sense Pins Provide Automatic Output Switching
Software-Enabled VREFOUT Output for Microphones and
External Power Amp
Split Power Supplies (3.3 V Digital/5 V Analog)
Mobile Low-Power Mixer Mode
Extended 6-Bit Master Volume Control
Extended 6-Bit Headphone Volume Control
Digital Audio Mixer Mode
Phat™ Stereo 3D Stereo Enhancement
FUNCTIONAL BLOCK DIAGRAM
ID0 ID1
JS
SPDIF
VREFOUT
MIC1
MIC2
LINE
AUX
CD
VIDEO
PHONE_IN
MONO_OUT
HP_OUT_L
LINE_OUT_L
VREF
0dB/
20dB
CHIP SELECT
JACK SENSE
MV
MV
MV
⌺⌺
G G GG G G
A A AA A A
M M MM M M
PHAT
STEREO
⌺⌺⌺⌺
AD1886A
SPDIF
OUT
PGA
16-BIT
-A/D
CONVERTER
PGA
16-BIT
-A/D
CONVERTER
SAMPLE
RATE
GENERATORS
G 16-BIT
A
-D/A
M CONVERTER
RESET
SYNC
BIT_CLK
SDATA_OUT
SDATA_IN
LINE_OUT_R
MV
PHAT
STEREO
⌺ ⌺⌺ ⌺⌺
G 16-BIT
A -D/A
M CONVERTER
HP_OUT_R
PC_BEEP
MV
A G = GAIN
M A = ATTENUATE
M = MUTE
OSCILLATOR
XTAL_OUT
XTAL_IN
SoundMAX is a registered trademark and Phat is a trademark of Analog Devices, Inc.
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2001

AD1886A
AD1886A–SPECIFICATIONS
STANDARD TEST CONDITIONS UNLESS OTHERWISE NOTED
Temperature
Digital Supply (VDD)
Analog Supply (VCC)
Sample Rate (fS)
Input Signal
Analog Output Pass Band
VIH
VIL
VIH (CS0, CS1, CHAIN_IN)
VIL
25°C
3.3 V
5.0 V
48 kHz
1008 Hz
20 Hz to 20 kHz
2.0 V
0.8 V
4.0 V
1.0 V
DAC Test Conditions
Calibrated
–3 dB Attenuation Relative to Full Scale
Input 0 dB
10 kOutput Load (LINE_OUT)
32 Output Load (HP_OUT)
ADC Test Conditions
Calibrated
0 dB Gain
Input –3.0 dB Relative to Full Scale
ANALOG INPUT
Parameter
Input Voltage (RMS Values Assume Sine Wave Input)
LINE_IN, AUX, CD, VIDEO, PHONE_IN, PC_BEEP
MIC1 or MIC2 with +20 dB Gain (M20 = 1)
MIC1 or MIC2 with 0 dB Gain (M20 = 0)
Input Impedance*
Input Capacitance*
Min Typ Max
1
2.83
0.1
0.283
1
2.83
20
5
7.5
MASTER VOLUME
Parameter
Step Size (0 dB to –94.5 dB); LINE_OUT_L, LINE_OUT_R
Output Attenuation Range Span*
Step Size (0 dB to –46.5 dB); MONO_OUT
Output Attenuation Range Span*
Step Size (+6 dB to –88.5 dB); HP_OUT_R, HP_OUT_L
Output Attenuation Range Span*
Mute Attenuation of 0 dB Fundamental*
Min Typ Max
1.5
–94.5
1.5
–46.5
1.5
–94.5
80
PROGRAMMABLE GAIN AMPLIFIER—ADC
Parameter
Step Size (0 dB to 22.5 dB)
PGA Gain Range Span
Min Typ Max
1.5
22.5
ANALOG MIXER—INPUT GAIN / AMPLIFIERS / ATTENUATORS
Parameter
Signal-to-Noise Ratio (SNR)
CD to LINE_OUT
Other to LINE_OUT
Step Size (+12 dB to –34.5 dB): (All Steps Tested)
MIC, LINE_IN, AUX, CD, VIDEO, PHONE_IN, DAC
Input Gain/Attenuation Range:
MIC, LINE, AUX, CD, VIDEO, PHONE_IN, DAC
Step Size (0 dB to –45 dB): (All Steps Tested)
PC_BEEP
Input Gain/Attenuation Range: PC_BEEP
*Guaranteed but not tested.
Min Typ Max
90
90
1.5
–46.5
3.0
–45
Unit
V rms
V p-p
V rms
V p-p
V rms
V p-p
k
pF
Unit
dB
dB
dB
dB
dB
dB
dB
Unit
dB
dB
Unit
dB
dB
dB
dB
dB
dB
–2– REV. 0


Features a AC’97 2.1 FEATURES Variable Sample R ate Audio Multiple Codec Configuration Options External Audio Power-Down Contr ol AC’97 FEATURES AC’97 2.2 Complia nt Greater than 90 dB Dynamic Range Ste reo Headphone Amplifier Multibit ⌺ - ⌬ Converter Architecture for Improved S/N Ratio Greater than 90 dB 16-Bit St ereo Full-Duplex Codec Four Analog Line -Level Stereo Inputs for: LINE-IN, CD, VIDEO, and AUX Two Analog Line-Level Mo no Inputs for Speakerphone and PC BEEP Mono MIC Input w/Built-In 20 dB Preamp, Switchable from Two External Sources H igh-Quality CD Input with Ground Sense AC’97 SoundMAX Codec AD1886A ® Ster eo Line Level Outputs Mono Output for S peakerphone or Internal Speaker Power M anagement Support 48-Terminal LQFP Pack age ENHANCED FEATURES 20-Bit SPDIF Outp ut w/32 kHz, 44.1 kHz, and 48 kHz Symbo l Rates Full Duplex Variable Sample Rat es from 7040 Hz to 48 kHz with 1 Hz Res olution Jack Sense Pins Provide Automat ic Output Switching Software-Enabled VREFOUT Output for Microphones and Exte.
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