Ordering number : EN5635
Monolithic Linear IC
LA7688
Single-Chip CTV Signal-Processing Circuit
for PAL and NTSC Formats
Overview
The LA7688 integrates VIF, SIF, video, chrominance, and
deflection processing circuits for PAL/NTSC format TV
sets on a single chip and is provided in a 52-pin shrink
package.
The VIF and SIF circuits achieve semi-adjustment-free
operation, and are adjustment-free except for the VCO coil
and the RF AGC circuit. The chrominance circuit can be
made adjustment-free by using the LC89950 1H delay line
IC. All the signal processing required for a multi-format
color TV can be implemented by combining this product
with the LA7642 SECAM decoder IC.
[OSD]
[DEF]
鈥?Analog OSD
鈥?Automatic 50/60 Hz discrimination
鈥?Fixed vertical size 鈥?Double AFC
鈥?Built-in sync separator circuit
[Other features] 鈥?Sandcastle pulse (for the 1H delay line)
鈥?fsc output (for SECAM systems)
鈥?Primary color output
Package Dimensions
unit: mm
3218-DIP52S
[LA7688]
Features
[VIF]
[SIF]
[VIDEO]
鈥?PLL detector 鈥?Buzz canceller
鈥?PLL detector 鈥?Audio switch
鈥?Built-in trap 鈥?Built-in DL
鈥?Aperture control
鈥?Video switch (SVO output)
鈥?Black expansion
鈥?PAL/NT 鈥?Base band processing
(adjustment free)
鈥?Built-in bandpass filter
[CHROMA]
SANYO: DIP52S
Specifications
Maximum Ratings
at Ta = 25擄C
Parameter
Maximum supply voltage
Maximum supply current
FBP input current
FBP input voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
V
40
max
V
45
max
I
24
max
I
26
max
I
32
max
I
26
min
Pd max
Topr
Tstg
Ta
鈮?/div>
65擄C When mounted on a printed circuit board*
Conditions
Ratings
9
9
16
5
10
鈥?
1.3
鈥?0 to +65
鈥?5 to +150
Unit
V
V
mA
mA
mA
V
W
擄C
擄C
Note :
*
Printed circuit board size: 83
脳
86
脳
1.5 mm, material: Bakelite
Operating Conditions
at Ta = 25擄C
Parameter
Recommended supply voltage
Recommended supply current
Operating voltage range
Operating current range
Symbol
V
40
V
45
I24
V
40
op
V
45
op
I
24
op
Conditions
Ratings
7.6
7.6
12
7 to 8.2
7 to 8.2
10 to 16
Unit
V
V
mA
V
V
mA
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
82097HA(OT) No. 5635-1/6
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