參數(shù)資料
型號(hào)： ML6421CS-3
英文描述： Triple Phase and Sinx/x Equalized, Low-Pass Video Filter
中文描述： 三階段和氮化硅/ x均衡，低通視頻濾波器
文件頁(yè)數(shù)： 8/13頁(yè)
文件大?。?/td> 160K
代理商： ML6421CS-3
ML6421
8
FUNCTIONAL DESCRIPTION
The ML6421 single-chip Triple Video Filter IC is intended
for consumer and low cost professional video
applications. Each of the three channels incorporates an
input buffer amplifier, a sixth order lowpass filter, a first
order allpass equalizer, Sinx/x equalizer and an output
amplifier capable of driving 75
to ground.
The ML6421 can be driven by a DAC with Range down to
0V. When Range is low the input and output signal range
is 0.5V to 2.5V. When the input signal includes 0V, Range
should be tied high. In this case, an offset is added to the
input so that the output swing is kept between 0.5V to
2.5V. The output amplifier is capable of driving up to
24mA of peak current; therefore the output voltage should
not exceed 1.8V when driving 75
to ground.
APPLICATION GUIDELINES
OUTPUT CONSIDERATIONS
The triple filters have unity gain. The circuit has unity
gain (0dB) when connected to a 150
load, and a –6dB
gain when driving a 75
load via a 75
series output
resistor. The output may be either AC or DC coupled. For
AC coupling, the –3dB point should be 5Hz or less. There
must also be a DC path of -500
to ground for output
biasing.
INPUT CONSIDERATIONS
The input resistance is 4k
. The input may be either DC or
AC coupled. (Note that each input sources 80 to 125μA of
bias current). The ML6421 is designed to be directly
driven by a DAC. For current output video DACs, a 75
or
150
resistor to ground may need to be added to the DAC
output (filter input).
Figure 9. ML6421 AC Coupled DC Bias Test Circuit
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
IN
B
V
IN
A
RANGE
GNDA
GND
V
CC
A
V
OUT
A
V
OUT
B
GNDB
V
IN
C
GND
GNDC
V
CC
V
CC
C
V
OUT
C
V
CC
B
75
75
OUTA
OUTB
1
μ
F
0.1
μ
F
0.1
μ
F
100
μ
F
100
μ
F
3.1k
47
1k
85
47
85
3.1k
1k
INB
INA
0.1
μ
F
100
μ
F
1nF
1nF
1nF
1nF
0.1
μ
F
0.1
μ
F
0.1
μ
F
0.1
μ
F
0.1
μ
F
0.001
μ
F
1
μ
F
100
μ
F
75
85
47
OUTC
3.1k
1k
INC
+5V
FB2
FB1
DC
BIAS
INPUT SIGNAL = 2V
P-P
INPUT
DECOUPLING
SUPPLY NOISE
CLAMPING
INPUT
TERMINATION
1
μ
F
相關(guān)PDF資料
PDF描述
ML6426CS-1 High Bandwidth Triple Video Filters with Buffered Outputs for RGB or YUV
ML6426CS-15 High Bandwidth Triple Video Filters with Buffered Outputs for RGB or YUV
ML6426CS-2 High Bandwidth Triple Video Filters with Buffered Outputs for RGB or YUV
ML6426CS-3 High Bandwidth Triple Video Filters with Buffered Outputs for RGB or YUV
ML6426CS-4 High Bandwidth Triple Video Filters with Buffered Outputs for RGB or YUV
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ML6421CS3 WAF 制造商:Fairchild Semiconductor Corporation 功能描述:
ML6421CS-4 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Triple Phase and Sinx/x Equalized, Low-Pass Video Filter
ML6421CS5 制造商:Fairchild Semiconductor Corporation 功能描述:
ML6421CS-5 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Triple Phase and Sinx/x Equalized, Low-Pass Video Filter
ML6421CS5 WAF 制造商:Fairchild Semiconductor Corporation 功能描述:
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