MM1327 查看數據表（PDF） - Mitsumi

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MM1327

Wide Discriminator

Mitsumi 

MITSUMI

Wide Discriminator MM1327

* Note 1 : 1 Clamp level and MAX output pin voltage

Measure voltage on each pin when GPIN and HDIN are connected to VCC.

* Note 2 : 2 Y input voltage gain

Input a sweep signal to Y input, input a clamp pulse synchronized to HSYNC to GPIN pin, and

measure voltage gain at MAX pin for 100kHz.

* Note 3 : 3 I, Q max/min gain

Input a square wave signal as shown below and a GPIN signal to I input (or Q input) and GPIN

pin, and measure voltage gain at MAX pin.

I or Q signal

GP pin

2µS

63.5µS

0.3V

0V

5V

0V

* Note 4 : 4 MAX amp limit level

Measure limit level at MAX pin when LIMIT-SW pin is high. However, the limit range is as follows

for the NTSC/PAL pin.

* Note 5 : 5 Offset voltage for reset

Connect GPIN pin to VCC and measure potential difference between INT IN pin and INT OUT pin.

* Note 6 : 6 Integrated limit voltage

Input a 100% white signal to Y input and a clamp pulse synchronized to HSYNC to GPIN pin.

Measure INT OUT pin voltage at integration end at this time.

Y input

INT OUT output

100IRE

VINTL

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