LA7265W(1998) Ver la hoja de datos (PDF) - SANYO -> Panasonic

Número de pieza

componentes Descripción

Fabricante

LA7265W
(Rev.:1998)

Single-Chip Black and White CCD Camera Signal Processing IC

SANYO -> Panasonic 

Continued from preceding page.

Pin No. Symbol

I/O

32

DRIVE-VCC

P

LA7265W

Equivalent circuit

Unit (resistance: Ω), I: input, O: output, B: I/O, P: power supply

Function

75 Ω driver system VCC. Since the current variations in this system

are large, care must be taken to prevent this system from influencing

other power supplies. Apply a 5 V potential and insert a capacitor of

about 0.1 µF between this pin and ground.

33

IRIS-OUT

O

Iris control signal output. The signal that had pedestal added and

was white clipped is amplified by about 10 dB by the iris amplifier and

output from this pin.

34

IRIS. WIN

I

35

AGC. WIN

I

36

LSP

I

Iris window pulse input. White clipping is applied to the signal that

had pedestal added (see the pin 39 description). The clipping level

changes depending on this pin's input state. (0 V → maximum,

open → typical, 5 V → minimum clipping levels) Iris windowing is

possible by inputting an iris window pulse signal that has three

values: 0 V, floating, and 5 V.

AGC window pulse input. The other signal that had OPB clamping

applied at pin 14 goes to the AGC detector system. First a pedestal

on the order of a few tens of mV is added using the blanking pulse

input from pin 39. Next, white clipping is applied. However, the clipping

level changes according to the state of this pin. (0 V → maximum,

open → typical, 5 V → minimum clipping levels) AGC backlighting

correction is possible by inputting an AGC window pulse signal that

has three values: 0 V, floating, and 5 V.

1H interpolation control pulse input. When 1H interpolation is used,

input an LSP pulse ( ) that switches on each 1H to this pin. Pin

40 clamp pulse switching is performed by the LSP pulse. This circuit

also switches the OPB clamped original signal and the 1H delayed

signal. When 1H interpolation is not used, only the original signal is

OPB clamped and passed through this circuit.

Continued on next page.

No. 4850-16/24

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