參數(shù)資料
型號： TLC32040C
廠商： Texas Instruments, Inc.
英文描述： ANALOG INTERFACE CIRCUITS
中文描述： 模擬接口電路
文件頁數(shù)： 17/33頁
文件大小： 453K
代理商： TLC32040C
sin
π
/fs
π
/fs
(f = 3000 Hz)
(f 3000 Hz)
TLC32040C, TLC32040I, TLC32041C, TLC32041I
ANALOG INTERFACE CIRCUITS
SLAS014E – SEPTEMBER 1987 – REVISED MAY 1995
17
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
(sin x)/x roll-off for a zero-order hold function
The (sin x)/x roll-off for the AIC DAC zero-order hold function at a band-edge frequency of 3000 Hz for the
various sampling rates is shown in the table below.
Table 3.
(sin x)/x Roll-Off
20 log
fs (Hz)
s(
(dB)
7200
–2.64
8000
–2.11
9600
–1.44
14400
–0.63
19200
–0.35
The actual AIC (sin x)/x roll-off is slightly less than the above figures, because the AIC has less than a 100%
duty cycle hold interval.
correction filter
To compensate for the (sin x)/x roll-off of the AIC, a first-order correction filter shown below, is recommended.
u(i + 1)
(1 – p1)P2
+
+
z – 1
y(i + 1)
p1
The difference equation for this correction filter is:
yi + 1 = p2(1 – p1) (u
i + 1
) + p1 yi
where the constant p1 determines the pole locations.
The resulting squared magnitude transfer function is:
p2
2
(1
p1)
2
f f
s
)
1
2p1 cos(2
p1
2
|H(f)|
2
相關(guān)PDF資料
PDF描述
TLC32040I ANALOG INTERFACE CIRCUITS
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TLC32041CFN ANALOG INTERFACE CIRCUITS
TLC32041I ANALOG INTERFACE CIRCUITS
TLC32040M ANALOG INTERFACE CIRCUIT
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TLC32040CFN 制造商:TI 制造商全稱:Texas Instruments 功能描述:ANALOG INTERFACE CIRCUITS
TLC32040CN 制造商:TI 制造商全稱:Texas Instruments 功能描述:ANALOG INTERFACE CIRCUITS
TLC32040I 制造商:TI 制造商全稱:Texas Instruments 功能描述:ANALOG INTERFACE CIRCUITS
TLC32040IN 制造商:TI 制造商全稱:Texas Instruments 功能描述:ANALOG INTERFACE CIRCUITS
TLC32040M 制造商:TI 制造商全稱:Texas Instruments 功能描述:ANALOG INTERFACE CIRCUIT
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