CXA3125N 데이터 시트보기 (PDF) - Sony Semiconductor

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CXA3125N

All Band TV Tuner IC (VHF-CATV-UHF)

Sony Semiconductor 

CXA3125N

Pin Description and Equivalent Circuit

Pin

Symbol

No.

Typical pin

voltage (V)

1

VCC

5.0

During VHF

reception 4.4 2

2 MIXout1

During UHF

reception 4.3

4.4

3 MIXout2

4.3

Equivalent circuit

3

4

GND

0

2.4

5 VHFin1

0

2.4

6 VHFin2

0

5

3k

6

3k

0

7 UHFin1

2.4

0

8 UHFin2

2.4

3.1

9 VOSC1

3.2

4.0

11 VOSC2

5.0

7

3k

8

3k

11

9

8p

330

1

50

VCC

3k

3k

15p

Description

Power supply.

Mixer outputs and IF amplifier

inputs. These pins are output

with open collector, and they

must be connected to power

supply via load.

GND.

VHF inputs.

Normally a capacitor is

connected at Pin 5 to GND and

Pin 6 is used for input.

UHF inputs. Symmetrical input

to Pins 7 and 8 or a capacitor

is connected at Pin 8 to GND

and Pin 7 is used for input.

External resonance circuit

connection for VHF oscillators.

—3—

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