SAA7144 NXP Semiconductors, SAA7144 Datasheet - Page 10

• Manufacturer Part Number: SAA7144
• Manufacturer: NXP Semiconductors

Specifications of SAA7144

• Package Type: LQFP
• Lead Free Status / RoHS Status: Compliant

Philips Semiconductors
9397 750 14454
Product data sheet
Fig 4. Analog line with clamp (HCL) and gain range
Fig 6. Analog input processing using the SAA7144HL as differential front-end with 9-bit ADC (continued in
V
V
V
V
DDA0(DECA)
DDA1(DECA)
SSA0(DECA)
SSA1(DECA)
AGND_A
AI1D_A
AI12_A
AI11_A
(HSY).
This is valid for decoder A, B, C and D. Here an example for decoder A is shown.
Figure
255
60
1
10).
5
4
3
9
1
8
2
6
analog line blanking
SOURCE
SWITCH
GAIN
HSY
LUM
TV line
CLAMP
HCL
ANALOG CONTROL
CONTROL
MODE[3:0]
CIRCUIT
CLAMP
MODE
CHR
mgl065
HCL
AMPLIFIER
Rev. 01 — 21 April 2005
CONTROL
9-bit DAC
ANALOG
CLAMP
CROSS MULTIPLEXER
GLIMB
GLIMT
WIPA
SLTCA
Fig 5. Automatic gain range.
ANTI-ALIAS
CONTROL
FILTER
GAIN
HSY
(1 V (p-p) 18/56 )
HOLDG
GAFIX
WPOFF
GUDL[1:0]
GAI[18:10]
HLNRS
UPTCV
analog input level
0 dB
3 dB
6 dB
ANTI-ALIAS
CONTROL
FUSE[1:0]
BYPASS
SWITCH
Quadruple video input processor
maximum
minimum
range 9 dB
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
SAA7144HL
VBSL
BLANKING
VERTICAL
CONTROL
ADC
VBLNK
SVREF
ADC input level
mhb325
controlled
001aab306
AD1BYP
0 dB
9
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