LA7780M データシートの表示（PDF） - SANYO -> Panasonic

部品番号

コンポーネント説明

メーカー

LA7780M

QPSK Downconverter for CATV Systems

SANYO -> Panasonic 

Note 2.

Input: SG1 = 69.55 MHz, SG2 = 70.55 MHz

LA7780M

Other conditions:

Internal AGC mode

Pin 24 left open.

Output: The post amplifier output (pin 13)

Point = 20 dBmV (69.55 MHz) + 20 dBmV (70.55 MHz)

Note 3.

Post amplifier output level = –3 dB

Remove the low-pass filter between pins 14 and 16.

(Short the coil of 27 µH and remove the capacitors of 27 pF and 15 pF.)

Note 4.

Input: SG1 = 69.55 MHz

Other conditions:

Internal AGC mode

Pin 24 left open.

Output: The signal level such that the post

amplifier output (pin 13) falls by –3 dB.

Note 5.

SG = 75 MHz, 20 dBm V

Note 6.

SG1 = 75 MHz, SG2 = 76 MHz,

Adjust the pin 1 level until the IM3 in the pin 4 output is 40 dB.

Output:RF1-OUT (pin 4)

VO(IM3) = 40 dB

No. 5268-3/9

Share Link: