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参数资料
| 型号： | LA7688 |
| 元件分类： | 接收器 |
| 英文描述： | AM/FM, AUDIO/VIDEO DEMODULATOR, PDIP52 |
| 封装： | SHRINK, DIP-52 |
| 文件页数： | 1/6页 |
| 文件大小： | 106K |
| 代理商： | LA7688 |
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.
Features
[VIF]
PLL detector Buzz canceller
[SIF]
PLL detector Audio switch
[VIDEO]
Built-in trap Built-in DL
Aperture control
Video switch (SVO output)
Black expansion
[CHROMA]
PAL/NT Base band processing
(adjustment free)
Built-in bandpass filter
[OSD]
Analog OSD
[DEF]
Automatic 50/60 Hz discrimination
Fixed vertical size Double AFC
Built-in sync separator circuit
[Other features] Sandcastle pulse (for the 1H delay line)
fsc output (for SECAM systems)
Primary color output
Package Dimensions
unit: mm
3218-DIP52S
Monolithic Linear IC
Ordering number : EN5635
82097HA(OT) No. 5635-1/6
SANYO: DIP52S
[LA7688]
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
Single-Chip CTV Signal-Processing Circuit
for PAL and NTSC Formats
LA7688
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
V40 max
9V
V45 max
9V
Maximum supply current
I24 max
16
mA
FBP input current
I26 max
5mA
I32 max
10
mA
FBP input voltage
I26 min
–5
V
Allowable power dissipation
Pd max
Ta
≤ 65°C When mounted on a printed circuit board*
1.3
W
Operating temperature
Topr
–10 to +65
°C
Storage temperature
Tstg
–55 to +150
°C
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
Recommended supply voltage
V40
7.6
V
V45
7.6
V
Recommended supply current
I24
12
mA
Operating voltage range
V40 op
7 to 8.2
V
V45 op
7 to 8.2
V
Operating current range
I24 op
10 to 16
mA
Operating Conditions at Ta = 25°C
Note : * Printed circuit board size: 83
× 86 × 1.5 mm, material: Bakelite
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