CXA1929M 查看數據表（PDF） - Sony Semiconductor

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CXA1929M

TV RF MODULATOR/PLL

Sony Semiconductor 

Pin

Pin Voltage

Reference

No.

Typical DC

Equivalent circuit

14

14

PDout

2.1 V

CXA1929M

Description

Phase detector output

15 OSC GND

16

OSC 1

17

OSC 2

18

OSC 3

19

OSC 4

20 OSC VCC

0V

2.5 V

1.7 V

1.7 V

2.5 V

5.V

19

18 17

16

VCO Ground

20

UHF OSC

15

Oscillator supply Voltage 5 V

22

22 Mod-Adj

2.5 V

MIXER

FMOSC

External Adjust Mod depth.

24 RF-OUT

24

3.4 V

MIXER

RF output.

Must be terminated with 75 Ω.

Application Circuit Notes

1. RF output pin 24 should be connected to a 75 Ω load in order to measure accurate input level. Also note

pin 24 has 2.7 kΩ to GND.

The output is measured using a spectrum analyzer.

2. After turning the device on, tune the variable inductor FM Tank so at the 6.5 MHz setting (set by I2C

control) the voltage on pin 6 should read 2.02 V

Set Fsound = 3

Delta Fsound = 1

—8—

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