mb40568pf Fujitsu Microelectronics, Inc., mb40568pf Datasheet - Page 16

• Manufacturer Part Number: mb40568pf
• Description: A/d Converter 1-channel, 8-bit Low-power Model With Built-in Clamp Circuit
• Manufacturer: Fujitsu Microelectronics, Inc.

16
MB40568
The MB40568’s internal clamp circuit is a peak-detection type circuit, which clamps compound synchronized signals
using the lowest sync point as clamp voltage (V
The clamp voltage is set at 0.6
If the clamp circuit is not used, the signal pins should be handled as follows:
• Clamp Circuit
CLAMP CIRCUIT OPERATION
A.GND
C
CLMP
Video signal
–
+
Signal level at V
V
V
V
OUTC
CLMP
V
INA
INC
Pin name
15
16
17
18
V
V
V
OUTC
CLMP
INC
INC
pin
V
CC
+ 0.2 V (typical).
V
CCA
A.GND
2 mA
CLMP
A/D converter
) (see illustration below).
V
CCA
3.2 V
(Pin No.: SK-DIP22P)
Bias circuit
Signal level at V
Connect to GND
Description
Leave open
Leave open
INA
pin
V
V
V
CCA
CLMP
RB
= 5.0 V
3.0 V
3.2 V