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參數(shù)資料
| 型號： | TMC22191KHC |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 顏色信號轉(zhuǎn)換 |
| 英文描述： | Digital Video Encoders/Layering Engine |
| 中文描述： | COLOR SIGNAL ENCODER, PQFP100 |
| 封裝： | 3.20 MM HEIGHT, MQFP-100 |
| 文件頁數(shù)： | 52/60頁 |
| 文件大?。?/td> | 293K |
| 代理商： | TMC22191KHC |
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TMC22091/TMC22191
PRODUCT SPECIFICATION
52
Applications Discussion
The TMC22x91 is a complex mixed-signal VLSI circuit. It
converts digital video signals at clock rates of up to 30 MHz
to analog video outputs. A recommended circuit connection
is shown in Figure 35.
References
The circuit shown in Figure 35 uses a stable external 1.235V
voltage reference. To use the internal voltage reference, sim-
ply delete the 3.3k
resistor and the LM185-12. A simple
voltage divider from the power supply should NOT be used,
as any variations in power supply voltage would appear
directly on the video outputs.
Filtering
An simple low-pass output reconstruction filter is shown in
Figure 36. This filter is located in the video signal path after
the COMPOSITE, LUMA, and CHROMA outputs. The
value of R
REF
may be varied to make up for the filter loss.
Figure 36. Recommended Output Reconstruction Filter
Video
from
Encoder
Video
Output
75
75
330pF
330pF
27pF
1.8
μ
H
100
pF
75
1.0
μ
H
27025A
Interface to the TMC22071 Genlocking Video
Digitizer
The TMC22x91 Digital Video Encoder has been designed to
directly interface to the TMC22071 Genlocking Video Digi-
tizer. An interface circuit is shown in Figure 37. The micro-
processor interface for TMC22x91 and TMC22071 are
similar. The R/W, RESET, D
0
and A
0
signals from the host
microprocessor are shared by the TMC22x91 and
TMC22071. The CS signals are separately driven from the
microprocessor bus.
Grounding Strategy
The TMC22x91 has distinctly separate analog and digital
circuits. To minimize digital crosstalk into the analog sig-
nals, the power supplies and grounds are provided over sepa-
rate pins. In general, the best results are obtained by
connecting all grounds to a ground plane. Power supply pins
should be individually decoupled at the pin.
Figure 35. Recommended Interface Circuit
LPF
LPF
LPF
BYPASS and OL4-0
on TMC22191 only.
OL4-0
BYPASS
PD23-0
VHSYNC
VVSYNC
PDC
KEY
VDO
+5V
5
24
8
8
2
27007A
+5V
from
Encoder
Video
75
75
+5V
IN5818
330pF
330pF
27pF
1.8
μ
H
100
pF
75
1.0
μ
H
47
μ
F
0.1
μ
F
47
μ
F
0.1
μ
F
0.1
μ
F
LM185-1.2
3.3K
392
0.1
μ
F
A
I
F
B
I
C
G
I
S-VIDEO OUTPUT
COMPOSITE VIDEO
OUTPUT
JTAG TEST
INTERFACE
MICROPROCESSOR
INTERFACE
VDD
DGND
AGND
VDDA
CHROMA
LUMA
COMPOSITE
COMP
VREF
RREF
R
D
T
T
T
T
A
C
R
LDV
PXCK
CVBS7-0
GHSYNC
GVSYNC
TMC22x91
DIGITAL VIDEO
ENCODER
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TMC22091R0C | Digital Video Encoders/Layering Engine |
| TMC22191R0C | Digital Video Encoders/Layering Engine |
| TMC22091 | Digital Video Encoders(數(shù)字視頻編碼器) |
| TMC22191 | Digital Video Encoders(數(shù)字視頻編碼器) |
| TMC2242A | Digital Half-Band Interpolating/Decimating Filter 12-bit In/16-bit Out, 60 MHz |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TMC22191R0C | 功能描述:視頻 IC D/V Encoder Layering Engine RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| TMC22191R0CT | 功能描述:視頻 IC D/V Encoder Layering Engine RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| TMC222 | 制造商:Trinamic 功能描述:IC SM WITH I2C INTERFACE |
| TMC2220G8A | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| TMC2220G8C | 制造商:Fairchild Semiconductor Corporation 功能描述:CONTROLLER: OTHER |
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