參數(shù)資料
型號： CPS1087
英文描述： Analog IC
中文描述： 模擬IC
文件頁數(shù)： 50/64頁
文件大?。?/td> 870K
代理商： CPS1087
CSP1027 Voice Band Codec for
Cellular Handset and Modem Applications
Data Sheet
January 2002
Agere Systems Inc.
50
9 Electrical Characteristics and Requirements
(continued)
9.1 Power Dissipation
Power dissipation is highly dependent on the frequency of operation. The typical power dissipation listed is for a
selected application. The following electrical characteristics are preliminary and are subject to change.
The power dissipation listed is for internal power dissipation only. Total power dissipation can be calculated on the
basis of the application by adding C x V
DD
2
x f for each output, where C is the additional load capacitance and f is
the effective output frequency.
Power dissipation due to the input and I/O buffers is highly dependent on the input voltage level. At full CMOS lev-
els, essentially no dc current is drawn. However, for levels near the threshold of 0.5 x V
DD
, high and unstable levels
can flow. Therefore, all unused input pins should be tied inactive to V
DD
or V
SS
, and all unused I/O pins should be
tied inactive through a 10 k
resistor to V
DD
or V
SS
. Table 13 shows the input buffer power dissipation for inputs at
dc levels, V
DD or
V
SS
.
Table 13. Power Dissipation
Operating Mode
Analog Supply
(V
DDA
)
5.0 V
Typ
5.0 V
Digital Supply
(V
DD
)
3.3 V
Typ
3.3 V
5.0 V
3.0 V
Max
5.5 V
Typ
5.0 V
Max
5.5 V
Max
3.6 V
Typ
3.0 V
Max
3.3 V
Codec Active,
Crystal Osc. Disabled
(
cioc0
: ACTIVE = 1,
XOSCEN = 0,
CLK at 25 MHz,
IOCK at 6.25 MHz,
CK
OS
at 1 MHz)
Codec Inactive,
Crystal Osc. Disabled
(
cioc0
: ACTIVE = 0,
XOSCEN = 0,
CLK at 25 MHz,
IOCK at 6.25 MHz)
Codec Active,
Crystal Osc. Enabled
(
cioc0
: ACTIVE = 1,
XOSCEN = 1,
25 MHz crystal,
IOCK at 6.25 MHz,
CK
OS
at 1 MHz)
Codec Inactive,
Crystal Osc. Enabled
(
cioc0
: ACTIVE = 0,
XOSCEN = 1,
25 MHz crystal,
IOCK at 6.25 MHz)
11.0 mA
55.0 mW
12.2 mA
67.1 mW
4.6 mA
23.0 mW
5.8 mA
31.9 mW
3.0 mA
9.9 mW
3.8 mA
13.7 mW
2.8 mA
8.4 mW
3.5 mA
11.5 mW
0.01 mA
0.05 mW
0.02 mA
0.11 mW
3.7 mA
18.5 mW
4.9 mA
26.9 mW
2.5 mA
8.2 mW
3.2 mA
11.5 mW
2.2 mA
6.6 mW
2.9 mA
9.6 mW
11.0 mA
55.0 mW
12.2 mA
67.1 mW
10.2 mA
51.0 mW
11.4 mA
62.7 mW
4.1 mA
13.5 mW
5.0 mA
18.0 mW
3.9 mA
11.7 mW
4.7 mA
15.5 mW
0.01 mA
0.05 mW
0.02 mA
0.11 mW
9.3 mA
46.5 mW
10.5 mA
57.8 mW
3.6 mA
11.9 mW
4.4 mA
15.8 mW
3.3 mA
9.9 mW
4.1 mA
13.5 mW
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參數(shù)描述
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CPS1089 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC
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