BH7240AKV
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Multimedia ICs
Color TV signal encoder
BH7240AKV
The BH7240AKV is an IC that converts digital RGB ...
Description
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Multimedia ICs
Color TV signal encoder
BH7240AKV
The BH7240AKV is an IC that converts digital RGB signals (8-bit) to NTSC and PAL color TV signals. In addition to composite output, luminance output, chrominance output, and analog RGB output are available. Each type of output is equipped with an internal 75Ω driver. Applications TV peripheral devices Features 1) Supports both NTSC and PAL. 2) Internal RGB3-channel DAC (internal regulator). 3) Internal burst timing generator circuit.
4) Y / C separation output pin. 5) Analog RGB signal output pin. 3) Internal 75Ω driver.
Block diagram
GDATA0 GDATA1 GDATA2 GDATA3 GDATA4 GDATA5 GDATA6 36 35 34 33 32 31 30 29 28 27 26 25 GDATA7 BDATA4 BDATA5 BDATA6 BDATA7
8 BDATA3 37 DECODER 8 BDATA2 38 CLK BDATA1 39 LATCH CLK LATCH CLK LATCH 22 RDATA2 DECODER DECODER 8 23 RDATA1 24 RDATA0
BDATA0
40
VREF
CELL MATRIX
CELL MATRIX
CELL MATRIX VCC
21
RDATA3
VCLK
41
CLK CLAMP CLAMP CLAMP
20
DVDD
DGND
42
GND
19
RDATA4
VREFOUT
43 MATRIX
Burst Flag GEN. B-Y
18 SYNC 17
RDATA5
N.C.
44 R G B SYNC
R-Y
RDATA6
AGND1
45
GND
Y SYNC ADD.
CHROMA GEN. 16 LPF YTRAP 15 Y/C MIX SCIN RDATA7
RCLAMP
46
VCC1
47
VCC
6dB
6dB
6dB
6dB
BPF
SYNC
14
SYNCIN
GCLAMP
48 GND
75
75
75
75
75
75
13 VCC
NT / PAL
1 BCLAMP
2 GND2
3 ROUT
4 GOUT
5 BOUT
6 YOUT
7 COUT
8 VOUT
9 VCC2
10 YTRAP
11 N.C.
12 N.C.
1
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Multimedia ICs
BH7240AKV
Absolute maximum ratings (Ta = 25°C)
Para...
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