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AK4708のメーカーはAsahi Kasei Microsystemsです、この部品の機能は「AV SCART Switch」です。 |
部品番号 | AK4708 |
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部品説明 | AV SCART Switch | ||
メーカ | Asahi Kasei Microsystems | ||
ロゴ | |||
このページの下部にプレビューとAK4708ダウンロード(pdfファイル)リンクがあります。 Total 30 pages
[AK4708]
www.DataSheet4U.com
AK4708
AV SCART Switch with Two RGB Outputs
GENERAL DESCRIPTION
The AK4708 is an IIC controlled audio and video switch matrix designed for digital TV and set-top-box
applications. The AK4708 offers the ideal features for digital set-top-box systems. The AK4708 includes
the audio switches, video switches, video filters. The AK4708 provides high performance audio and video
routings to meet dual SCART connections. The AK4708 is supplied in a small 48-pin LQFP package to
contribute space saving in PCB.
FEATURES
Analog Switches for SCART
Audio section
THD+N: −86dB (@2Vrms)
Dynamic Range: 96dB (@2Vrms)
Analog Inputs
Two Full Differential Stereo Inputs or Single-ended input for Decoder DAC
Two Stereo Inputs (TV & VCR SCART)
Analog Outputs
Two Stereo Outputs (TV & VCR SCART)
Stereo Analog Volume with Pop-noise Free Circuit (+6dB to –60dB & Mute)
Pop Noise Free Circuit for Power on/off
Video section
VCR SCART supports RGB mode
Integrated LPF: −40dB@27MHz
75Ω driver
6dB Gain for Outputs
Four CVBS/Y inputs (ENCx2, TV, VCR), Two CVBS/Y outputs (TV, VCR)
Three R/C inputs (ENCx2, VCR), Two R/C outputs (TV, VCR)
Two G and B inputs (ENC, VCR), Two G and B outputs (TV, VCR)
TV/VCR input monitor
Loop-through Mode for standby
Auto-Startup Mode for power saving
SCART pin#16 (Fast Blanking), pin#8 (Slow Blanking) Control
Power supply
5V+/−5% and 12V+/−10%
Small current consumption in Standby Mode
(VD=10μA typ., VVD1+VVD2=10μA typ., VP=10μA typ.)
Package
48-pin LQFP
MS0618-E-00
-1-
2007/04
1 Page ( Typical connection )
VVD1
VVD2
VVSS
ENC CVBS/Y
ENC Y
VCR CVBS/Y
TV CVBS
ENC R/C/Pr
ENC C
VCR R/C/Pr
ENCV
ENCY
VCRVIN
TVVIN
ENCRC
ENCC
VCRRC
ENC G/CVBS
VCR G
ENC B/Pb
VCR B/Pb
ENCG
VCRG
ENCB
VCRB
Monitor
6dB
6dB
6dB
6dB
6dB
6dB
6dB
6dB
Video Block
[AK4708]
www.DataSheet4U.com
( Typical connection )
TVVOUT
TVRC
TVG
TVB
TV SCART
VCRVOUT
VCRC
VCR SCART
VCRGO
VCRBO
MS0618-E-00
-3-
2007/04
3Pages No. Pin Name
1 VCRC
2 VVSS
3 TVVOUT
4 VVD2
5 TVRC
6 TVG
7 TVB
8 VVD1
9 ENCB
10 ENCG
11 ENCRC
12 ENCC
13 ENCV
14 ENCY
15 TVVIN
16 VCRVIN
17 VCRFB
18 VCRRC
19 VCRG
20 VCRB
21 INT
22 VCRSB
23 TVSB
24 VCRINR
25 VCRINL
26 TVINR
27 TVINL
28 VCROUTR
29 VCROUTL
30 TVOUTR
31 TVOUTL
32 VP
33 DVCOM
34 PVCOM
35 VSS
PIN/FUNCTION
[AK4708]
www.DataSheet4U.com
I/O Function
O Chrominance Output Pin for VCR
- Video Ground Pin #1, 0V
O Composite/Luminance Output Pin for TV
Video Power Supply Pin #2, 5V
- Normally connected to VVSS with a 0.1μF ceramic capacitor in parallel
with a 10μF electrolytic cap.
O Red/Chrominance Output Pin for TV
O Green Output Pin for TV
O Blue Output Pin for TV
Video Power Supply Pin #1, 5V
- Normally connected to VVSS with a 0.1μF ceramic capacitor in parallel
with a 10μF electrolytic cap.
I Blue Input Pin for Encoder
I Green Input Pin for Encoder
I Red/Chrominance Input Pin #1 for Encoder
I Chrominance Input Pin #2 for Encoder
I Composite/Luminance Input Pin #1 for Encoder
I Composite/Luminance Input Pin #2 for Encoder
I Composite/Luminance Input Pin for TV
I Composite/Luminance Input Pin for VCR
I Fast Blanking Input Pin for VCR
I Red/Chrominance Input Pin for VCR
I Green Input Pin for VCR
I Blue Input Pin for VCR
O
Interrupt Pin for Video Blanking
Normally connected to VD(5V) through 10kΩ resistor externally.
I/O Slow Blanking Input/Output Pin for VCR
O Slow Blanking Output Pin for TV
I Rch VCR Audio Input Pin
I Lch VCR Audio Input Pin
I Rch TV Audio Input Pin
I Lch TV Audio Input Pin
O Rch Analog Output Pin #1
O Lch Analog Output Pin #1
O Rch Analog Output Pin #2
O Lch Analog Output Pin #2
Power Supply Pin, 12V
- Normally connected to VSS with a 0.1μF ceramic capacitor in parallel
with a 10μF electrolytic cap.
Audio Common Voltage Pin #1
O Normally connected to VSS with a 0.1μF ceramic capacitor in parallel
with a 10μF electrolytic cap.
Audio Common Voltage Pin #2
O
Normally connected to VSS with a 0.1μF ceramic capacitor in parallel
with a 10μF electrolytic cap. The caps affect the settling time of audio bias
level.
- Ground Pin , 0V
MS0618-E-00
-6-
2007/04
6 Page | |||
ページ | 合計 : 30 ページ | ||
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PDF ダウンロード | [ AK4708 データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
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