AD1881AJSTZ Analog Devices Inc, AD1881AJSTZ Datasheet

IC AUDIO CODEC AC'97 48-LQFP

AD1881AJSTZ

Manufacturer Part Number
AD1881AJSTZ
Description
IC AUDIO CODEC AC'97 48-LQFP
Manufacturer
Analog Devices Inc
Series
SoundMAX®r
Type
Audio Codec '97r
Datasheet

Specifications of AD1881AJSTZ

Data Interface
Serial
Resolution (bits)
16 b
Number Of Adcs / Dacs
2 / 2
Sigma Delta
Yes
S/n Ratio, Adcs / Dacs (db) Typ
90 / 90
Dynamic Range, Adcs / Dacs (db) Typ
87 / 90
Voltage - Supply, Analog
4.75 V ~ 5.25 V
Voltage - Supply, Digital
3 V ~ 3.6 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
48-LQFP
Single Supply Voltage (typ)
3.3/5V
Single Supply Voltage (min)
3/4.75V
Single Supply Voltage (max)
3.6/5.25V
Package Type
LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD1881AJSTZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
a
SoundMAX is a registered trademark and PHAT is a trademark of Analog Device, Inc.
LNLVL_OUT_R
LNLVL_OUT_L
LINE_OUT_R
LINE_OUT_L
MONO_OUT
PHONE_IN
PC_BEEP
LINE_IN
VIDEO
MIC1
MIC2
AUX
CD
MV
MV
MV
0dB/
20dB
M
D
A
AD1881A
POP
POP
STEREO
STEREO
FUNCTIONAL BLOCK DIAGRAM
PHAT
PHAT
M
M
G
A
A
CS0
G = GAIN
A = ATTENUATE
M = MUTE
MV = MASTER VOLUME
NC = NO CONNECT
G
A
M
MODE/SYNCHRONIZER
CS1
G
A
M
M
G
A
EAPD
M
G
A
G
A
M
MODE
AC’97 SoundMAX
NC
NC
G
A
M
G
A
M
PGA
PGA
GENERATORS
CONVERTER
CONVERTER
CONVERTER
CONVERTER
SAMPLE
16-BIT
16-BIT
16-BIT
16-BIT
RATE
A/D
A/D
D/A
D/A
XTL_OUT
OSCILLATORS
XTL_IN
AD1881A
®
SYNC
BIT_CLK
RESET
SDATA_OUT
SDATA_IN
Codec

Related parts for AD1881AJSTZ

AD1881AJSTZ Summary of contents

Page 1

AD1881A MIC1 0dB/ 20dB MIC2 LINE_IN AUX CD VIDEO PHONE_IN MONO_OUT MV LNLVL_OUT_L LINE_OUT_L LINE_OUT_R MV LNLVL_OUT_R PC_BEEP SoundMAX is a registered trademark and PHAT is a trademark of Analog Device, Inc. FUNCTIONAL BLOCK DIAGRAM ...

Page 2

AD1881A–SPECIFICATIONS STANDARD TEST CONDITIONS UNLESS OTHERWISE NOTED Temperature 25 Digital Supply (V ) 3.3 DD Analog Supply (V ) 5.0 CC Sample Rate ( Input Signal 1008 ANALOG INPUT Parameter Input Voltage (RMS Values Assume Sine Wave ...

Page 3

DIGITAL DECIMATION AND INTERPOLATION FILTERS Parameter Passband Passband Ripple Transition Band Stopband Stopband Rejection Group Delay Group Delay Variation Over Passband ANALOG-TO-DIGITAL CONVERTERS Parameter Resolution Total Harmonic Distortion (THD) Dynamic Range (–60 dB Input THD+N Referenced to Full Scale, A-Weighted) ...

Page 4

AD1881A–SPECIFICATIONS STATIC DIGITAL SPECIFICATIONS Parameter High Level Input Voltage (V ): Digital Inputs IH Low Level Input Voltage ( High Level Output Voltage ( Low Level Output Voltage ( +0.5 mA ...

Page 5

TIMING PARAMETERS (GUARANTEED OVER OPERATING TEMPERATURE RANGE) Parameter RESET Active Low Pulsewidth RESET Inactive to BIT_CLK Startup Delay SYNC Active High Pulsewidth SYNC Low Pulsewidth SYNC Inactive to BIT_CLK Startup Delay BIT_CLK Frequency BIT_CLK Period 2 BIT_CLK Output Jitter ...

Page 6

AD1881A t RST_LOW t RST2CLK RESET BIT_CLK t t SYNC_HIGH RST2CLK SYNC BIT_CLK t CLK_LOW BIT_CLK t CLK_HIGH t CLK_PERIOD t SYNC_LOW SYNC t SYNC_HIGH t SYNC_PERIOD t SETUP BIT_CLK SYNC SDATA_OUT t HOLD BIT_CLK t t RISECLK FALLCLK SYNC ...

Page 7

ABSOLUTE MAXIMUM RATINGS Parameter Min Power Supplies Digital (V ) –0.3 DD Analog (V ) –0.3 CC Analog Input Voltage (Signal Pins) –0.3 Digital Input Voltage (Signal Pins) –0.3 Ambient Temperature (Operating) 0 Storage Temperature –65 Stresses greater than those ...

Page 8

AD1881A Digital I/O Pin Name LQFP XTL_IN 2 XTL_OUT 3 SDATA_OUT 5 BIT_CLK 6 SDATA_IN 8 SYNC 10 RESET 11 Miscellaneous Connections Pin Name LQFP CS0 45 CS1 46 EAPD 47 MODE 48 Analog I/O These signals connect the AD1881A ...

Page 9

Power and Ground Signals Pin Name LQFP Type DD1 SS1 SS2 DD2 DD1 SS1 DD2 SS2 ...

Page 10

AD1881A PRODUCT OVERVIEW The AD1881A meets the Audio Codec ’97 2.0 and 2.1 Extensions. In addition, the AD1881A SoundMAX Codec is designed to meet all requirements of the Audio Codec ’97, Component Specification, Revi- sion 1.03, © 1996, Intel Corporation, ...

Page 11

Reg Num Name D15 D14 00h Reset X SE4 02h Master Volume MM X 04h Reserved X X 06h Master Volume Mono MMM X 08h Reserved X X 0Ah PC Beep Volume PCM X 0Ch Phone In Volume PHM X ...

Page 12

AD1881A Reset (Index 00h ...

Page 13

PC Beep Register (Index 0Ah ...

Page 14

AD1881A CD Volume (Index 12h ...

Page 15

Record Select Control Register (Index 1Ah ...

Page 16

AD1881A General Purpose Register (Index 20h ...

Page 17

Subsection Ready Register (Index 26h ...

Page 18

AD1881A Extended Audio Status and Control Register (Index 2Ah ...

Page 19

Miscellaneous Control Bits (Index 76h ...

Page 20

AD1881A Sample Rate 1 (Index 7Ah ...

Page 21

APPLICATIONS CIRCUITS The AD1881A has been designed to require a minimum amount of external circuitry. The recommended applications circuits are shown in Figure 9. Reference designs for the AD1881A are available and may be obtained by contacting your local Analog ...

Page 22

AD1881A CD-ROM CONNECTIONS The CD-ROM audio output level should be investigated; typical drives generate 2 V rms output and require a voltage divider for compatibility with the Codec input (1 V rms range). The recommended circuit is basically a group ...

Page 23

J1 MIC INPUT EMC COMPONENTS J1 L1 600Z 600Z 470pF MIC INPUT LINE OUTPUT CONNECTIONS The AD1881A Codec provides stereo LINE_OUT signals at a standard 1 V rms level. These signals must be ...

Page 24

AD1881A U1 AD1881A EAPD/CHAIN_IN 49.9k LINE_OUT_L C4 0.33 F LIN_OUT_R 49.9k MONO_OUT C7 0.33 F GROUNDING AND LAYOUT To reduce noise and emissions, Analog Devices recommends a split ground plane as shown in Figure 16. The purpose of splitting the ...

Page 25

0 power plane layer is being used in the system design recommended that the analog power plane for the Codec also be split (mirroring the analog ground plane). In this ...

Page 26

AD1881A OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 48-Lead Thin Plastic Quad Flatpack (LQFP) (ST-48) 0.063 (1.60) MAX 0.354 (9.00) BSC 0.057 (1.45) 0.030 (0.75) 0.276 (7.0) BSC 0.030 (0.75) 0.018 (0.45) 0.053 (1.35) 0.018 (0.45 SEATING ...

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