AK8851 Datasheet, PDF (7/80 Pages) Asahi Kasei Microsystems – NTSC/PAL/SECAM Digital Video Decoder

ASAHI KASEI
(5) Analog Characteristics and Power Dissipation (AVDD =3.3 V at room temperature)
[AK8851]
Selector Clamp
Parameter
Symbol Min.
Maximum Input Range
VIMX
Clamp Level
(Composite / Y Video Signal)
VYCP
C Signal Clamp Level
VCCP
Clamp Current
CLPI
Isolation between Each
Channels
Typ.
0.65
1.29
+/-150
-60
Max.
1.20
Units
V_PP
V
Condition
PGA Gain 0dB
V
uA
dB ^5.5MHz
PGA
Parameter
Resolutions
Gain offset
Minimum Gain
Maximum Gain
Gain Step
Symbol Min.
GOF
GMN
GMX
GST
Typ.
7
0.65
0
12
0.094
Max.
Units
bit
dB
dB
dB
dB
Conditions
Gain 0dB
(Reg0x0A, 0x0B = 0x00)
AD Converter
Parameters
Symbol Min.
Typ.
Max. Units
Conditions
Resolutions
RES
10
bits
Operation Clock
FS
27
MHz
ADC Range
AIN
1.6
Vpp (VRP-VRN) x 2
INL
INL
+/-2.5 +/-5.0 LSB fs=27MHz (*1)
DNL
DNL
+/-0.8 +/-2.0 LSB fs=27MHz (*1)
S/N
SN
54
dB
fin=1MHz Ain= -1dB
fs=27MHz (*2)
S/(N+D)
SND
51
dB
fin=1MHz Ain= -1dB
fs=27MHz (*2)
ADC Internal Common VCOM
1.2
V
Voltage
ADC Internal VREF+
VRP
1.6
V
ADC Internal VREF-
VRN
0.8
V
(*1) Full scale input range: VI=1.2Vpp, When PGA Gain Control Register 0x0A/0x0B is set to 0x0E.
(*2) VI=1.2Vpp PGA Gain Control Register 0x0A/0x0B = 0x06
Power Dissipation
Parameter
Active Mode
Digital + Analog
Analog
Digital
Power Down Current
Mode 1
Digital + Analog
Analog
Digital
Mode 2
Digital + Analog
Analog
Digital
Symbol Min.
Typ.
142
(129)
44
(30)
98
81
16
85
10
1
9
Max.
185
105
200
Units
Conditions
mA 2ch operation (YCmode)
mA (1ch operation (CVBS))
mA 2ch operation (YC mode)
(1ch operation (CVBS))
25pF Load
100% Color Bar Input
Mode 1: AFE Control Register
INSEL[2:0]=111
mA Analog ADC Path Power Down
mA (PLL block is not powered down.)
mA
Mode 2: PD pin Low
When PD pin changes Low to
uA High, the AK8851 requires a
uA Reset sequence.
uA
MS0244-E-03
7
Confidential
2005 / 07