[AK4711]
= Preliminary =
AK4711
Low Power Single SCART Driver with HD
Fil
FEATURES
Audio section
THD+N:
−92dB
(@2Vrms)
Dynamic Range: 96dB (@2Vrms, A-weighted)
Full Differential or Single-ended input for Decoder DAC
Stereo Output for TV SCART and CINCH (2Vrms)
Ground-Referenced Output Eliminates
DC-Blocking Capacitor and Mute Circuit
Video section
Integrated LPF
SD: –40dB@27MHz
HD: –40dB@74.25MHz or 54MHz or 27MHz selectable
6dB Gain for Outputs
5ch 75ohm driver
4ch for SCART: CVBS/Y, R/C, G, B
1ch for CINCH: CVBS
Y/Pb/Pr Option (to 6MHz)
Low-power Standby
SCART pin#16(Fast Blanking), pin#8(Slow Blanking) Output Control
Power supply
3.3V+/−5% and 12V+/−5%
Low Power Dissipation / Low Power Standby Mode
Package
36pin QFN (0.4mm pitch)
Rev. 0.4
-1-
2011/07
[AK4711]
PIN/FUNCTION
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Pin Name
HDY
HDPR
HDPB
RCAVOUT
VSS3
TVVOUT
TVFB
TVRC
TVG
TVB
VVD
ENCB
ENCG
ENCRC
ENCC
ENCV
ENCY
VP
I/O
O
O
O
O
-
O
O
O
O
O
-
I
I
I
I
I
I
-
Function
Green/Y Output Pin
Red/Pr Output Pin
Blue/Pb Output Pin
Composite/Luminance Output Pin for RCA
Video Ground Pin , 0V
Composite/Luminance Output Pin for TV
Fast Blanking Output Pin for TV
Red/Chrominance Output Pin for TV
Green Output Pin for TV
Blue Output Pin for TV
Video Power Supply Pin: 3.13V ~ 3.47V
Normally connected to VSS3 with a 0.1μF ceramic capacitor in parallel with a 4.7μF
electrolytic capacitor.
Blue Input Pin for Encoder
Green Input Pin for Encoder
Red/Chrominance Input Pin #1 for Encoder
Chrominance Input Pin #2 for Encoder
Composite/Luminance Input Pin #1 for Encoder
Composite/Luminance Input Pin #2 for Encoder
Blanking Power Supply Pin, 10.8V ~ 13.2V
The VP pin must connect to power supply through 10ohm resistor with 0.1μF
ceramic capacitor in parallel with a 1μF electrolytic capacitor to VSS1.
Slow Blanking Output Pin for TV
A 470ohm ±5% resistor must be connected between the TVSB pin and SCART
connector.
Audio Ground Pin , 0V
Audio Power Supply Pin: 3.13V ~ 3.47V
Normally connected to VSS1 with a 0.1μF ceramic capacitor in parallel with a 4.7μF
electrolytic capacitor.
Rch Analog Output Pin #2
Lch Analog Output Pin #2
Rch Negative Analog Input Pin
Rch Positive Analog Input Pin
Lch Negative Analog Input Pin
Lch Positive Analog Input Pin
Negative Voltage Output Pin
Connect to VSS2 with a 1.0μF capacitor that should have the low ESR (Equivalent
Series Resistance)
over all temperature range. When this capacitor has the polarity,
the positive polarity pin should be connected to the VSS2 pin. Non polarity
capacitors can also be used.
Negative Charge Pump Capacitor Terminal Pin
Connect to CP with a 1.0μF capacitor that should have the low ESR (Equivalent
Series Resistance) over all temperature range. When this capacitor has the polarity,
the positive polarity pin should be connected to the CP pin. Non polarity capacitors
can also be used.
Positive Charge Pump Capacitor Terminal Pin
Connect to CN with a 1.0μF capacitor that should have the low ESR (Equivalent
Series Resistance) over all temperature range. When this capacitor has the polarity,
the positive polarity pin should be connected to the CP pin. Non polarity capacitors
can also be used.
Charge Pump Ground Pin , 0V
Charge Pump Power Supply Pin: 3.13V ~ 3.47V
2011/07
-4-
19
20
21
22
23
24
25
26
27
TVSB
VSS1
VD1
TVOUTR
TVOUTL
AINRN
AINRP
AINLN
AINLP
O
-
-
O
O
I
I
I
I
28
VEE
O
29
CN
I
30
CP
I
31
32
VSS2
VD2
-
-
Rev. 0.4
[AK4711]
Normally connected to VSS2 with a 0.1μF ceramic capacitor in parallel with a 4.7μF
electrolytic cap.
33 SCL
I
Control Data Clock Pin
34 SDA
I/O Control Data Pin
Power-Down Mode Pin
35 PDN
I
When at “L”, the AK4711 is in the power-down mode and is held in reset. The
AK4711 should always be reset upon power-up.
Video Power Supply Pin: 3.13V ~ 3.47V
36 HDVVD
-
Normally connected to VSS3 with a 0.1μF ceramic capacitor in parallel with a 4.7μF
electrolytic capacitor.
Note: All digital input pins should not be left floating.
Rev. 0.4
-5-
2011/07
Embedded System
京公网安备 11010802033920号
EEWORLD
