IDTSTAC9752AXTAED1XR IDT, Integrated Device Technology Inc, IDTSTAC9752AXTAED1XR Datasheet - Page 21

• Manufacturer Part Number: IDTSTAC9752AXTAED1XR
• Description: IC CODEC AC'97 MIC/JACK 48-QFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Audio Codec '97r

Specifications of IDTSTAC9752AXTAED1XR

• Resolution (bits): 20 b
• Number Of Adcs / Dacs: 2 / 2
• Sigma Delta: Yes
• S/n Ratio, Adcs / Dacs (db) Typ: 85 / 92
• Voltage - Supply, Analog: 3.14 V ~ 3.47 V; 4.75 V ~ 5.25 V
• Voltage - Supply, Digital: 3.14 V ~ 3.47 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: STAC9752AXTAED1XR

3. TYPICAL CONNECTION AND POWER DIAGRAMS
IDT™
AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK
STAC9752A/9753A
AC’97 2.3 CODECS WITH STEREO MICROPHONE & UNIVERSAL JACK
3.1.
STAC9752A/9753A Typical Connection Diagram for 48-pin LQFP
*OPTIONAL
1 µ F *
8 2 0 p F
8 2 0 p F
Note:
Note: The CD_GND signal is an AC signal return for the two CD input channels. It is normally biased at about
Figure 9. STAC9752A/9753A Typical Connection Diagram 48-pin LQFP
2.5V. The name of the pin in the AC’97 specification is CD_GND, and this has confused many
designers. It should not have any DC path to GND. Connecting the CD_GND signal directly to ground
will change the internal bias of the entire CODEC, and cause significant distortion. If there is no analog
CD input, then this pin can be No-Connect.
Pin 48: To Disable SPDIF, use an 1K - 1 0 K external pullup resistor.
0.1 µF
0.1 µF
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 0
2 1
2 2
2 3
2 4
3 2
2 9
3 0
P C _ B E E P
P H O N E
A U X _ L
A U X _ R
V I D E O _ L
V I D E O _ R
CD_L
CD_GND
CD_R
M I C 1
M I C 2
LINE_IN_L
LINE_IN_R
CAP2
A F I L T 1
A F I L T 2
1 µF
2 5
AVdd1
26
AVss1
AVdd2
AVss2
38
0.1 µF
42
*OPTIONAL
STAC9753
DVss1
4
2
21
*
0.1 µF
Ferrite Bead
DVss2
7
1
DVdd1
D V d d 2
9
LINE_OUT_R
S D A T A _ O U T
LINE_OUT_L
1 µF
M O N O _ O U T
HP_OUT_R
HP_OUT_L
SDATA_IN
HP_COMM
V R E F O U T
XTL_OUT
STAC9752A/9753A
BIT_CLK
R E S E T #
XTL_IN
G P I O 1
G P I O 0
S P D I F
S Y N C
EAPD
V R E F
CID0
CID1
plane as close to codec
N C
N C
N C
0.1 µF
Ground
*Terminate ground
A n a l o g
as possible
2
3
5
6
8
10
11
45
46
47
28
27
31
33
34
48
44
43
35
36
37
39
41
40
3.3V ± 5%
0
Ground
Digital
OPTIONAL
HP_COMM should be tied to
ground at the headphone pin.
T U N E T O L A Y O U T
2 2
24.576 MHz
(Near Clk source)
1 µF
27 pF
27 pF
2 7 p F
PC AUDIO
Filter
E M I
CLOCK_IN*
*Add resistive divider
when using 5V clock.
V 1.5 1206