Service manual

47
■■
IY02 (LC89960)
1. Overview
The SANYO LC89960 is a 1H delay line for NTSC television systems.
Only an external low-pass filter is required to implement a 1H delay line.
2. Features
• Single 5V power supply.
• 1H delay signal can be obtained with low-pass filter and 3.58MHz clock input.
• Minimum number of external components required because of timing generator, bias generator, output Amp, on
chipped.
• The phase of output signal is reversed to the phase of input signal.
3. Functions.
• 905 stage CCD shift register.
• Timing generator and clock driver for CCD.
• Auto-bias citcuit.
• Sync tip clamp circuit.
• Sample and hold circuit and output Amp.
• 4fsc clock generator with PLL circuit.
• VCO (4fsc) output circuit.
4. Absolute Maximum Ratings
Items Symbol Unit Min. max. Conditions
supply voltage VDD V -0.3 +6.0 Ta = 25°C
Operating Temperature TOPR °C -10 +60
Storage Temperature TSTG °C -55 +150
Allowable Power : Dissipation PD mW - 450 Ta = 25°C
PIN MODE STOP REC PLAY REW/FWD REV/FF PAUSE STILL
1 2.2 2.2 2.2 2.2 2.2 2.2 2.2
2 2.5 2.5 2.5 2.5 2.5 2.5 2.5
30000000
42222222
50000000
60000000
70000000
8 1.2 1.2 1.2 1.2 1.2 1.2 1.2
9 5.2 5.2 5.2 5.2 5.2 5.2 5.2
10 2.1 2.1 2.1 2.1 2.1 2.1 2.1
11 2.1 2.1 2.1 2.1 2.1 2.1 2.1
12 5.2 5.2 5.2 5.2 5.2 5.2 5.2
13 9.4 9.4 9.4 9.4 9.4 9.4 9.4
14 0 0 0 0 0 0 0
Y/C CCD IC LC89960
5.Pin Operation