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參數(shù)資料
| 型號： | T8538B |
| 元件分類： | Codec |
| 英文描述： | T8538B Quad Programmable Codec |
| 中文描述： | T8538B四可編程編解碼器 |
| 文件頁數(shù)： | 22/44頁 |
| 文件大?。?/td> | 847K |
| 代理商： | T8538B |
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22
Agere Systems Inc.
Preliminary Data Sheet
August 2001
T8538B Quad Programmable Codec
Signal Processing
Figure 19 details the signal processing functional blocks of one channel of the codec.
0497F
* Programmable blocks.
Figure 19. Internal Signal Processing
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operational section of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.
1. Four layer, JEDEC test board.
Parameter
Symbol
T
stg
V
DDX
V
SS
Min
55
—
0.25
Max
150
Unit
°C
V
V
Storage Temperature Range
Power Supply Voltage (all leads designated power)
Negative Voltage on Any Lead with Respect to Ground
Thermal Resistance, Junction to Ambient:
64-Pin TQFP
1
100-Pin TQFP
1
Package Power Dissipation
SLIC Control Interface Latches, Current per Device
V
DDX
+ 0.5
—
R
Θ
JA
R
Θ
JA
P
D
I
L
—
—
—
—
40
30
1
160
°C/W
°C/W
W
mA
SPEED
FROM
PCM
BUS
*
GRX1
GAIN
8 kHz
COMP
TO LIN.
TRANSFER
XLPF
GAIN
TWEAKING
GRX2
SINC
3
∑
-
D/A
1-bit
D/A
RCF
SMF
TO
SLIC
0 dB
BAL
*
32 kHz
4096 kHz
LPF
*
DIGITAL
*
*
TO
PCM
BUS
*
GAIN
GTX2
LIN.TO
COMP
YLPF
*
GAIN
TWEAKING
GTX1
SINC
3
*
FROM
SLIC
0 dB TO 24 dB
IN 5 STEPS
TRANSFER
TEQ
∑
-
A/D
LPF
*
RTZ
8 STEPS
XAG
ANALOG
CTZ
*
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