CXA3225N Ver la hoja de datos (PDF) - Sony Semiconductor

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componentes Descripción

Fabricante

CXA3225N

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

Sony Semiconductor 

CXA3225N

Pin Description and Equivalent Circuit

Pin

Symbol

No.

Typical pin

voltage (V)

Equivalent circuit

3

1

IFIN1

2.4

1

5k

5k

2

IFIN2

2.4

Description

2

IF amplifier input.

3

VCC

5.0

4.4 during

VHF reception

4 MIXOUT1

4.3 during

UHF reception

4.4 during

VHF reception

5 MIXOUT2

4.3 during

UHF reception

6

GND

0

0.8

7

IFSW

(when open)

4

3

7

2.4 during

VHF reception

8 VHFIN

8

3k

2.6 during

UHF reception

Power supply.

5

Mixer outputs.

These pins are output with

open collector, and they must

be connected to the power

supply via the load.

20k

500

3k

GND.

Switching of VHF input ground

and IF symmetrical/

asymmetrical output.

Asymmetrical output is selected

for open state; symmetrical

output for grounding. When

used as an asymmetrical output,

ground this pin with a capacitor.

3

VCC

7

IFSW

VHF inputs.

Input format is asymmetrical

input.

2.6 during

VHF reception

9 UHFIN1

2.3 during

UHF reception 9

3k

2.6 during

VHF reception

10 UHFIN2

2.3 during

3

UHF inputs.

10 Input the signal to Pins 9 and

3k

10 symmetrically or ground Pin

10 with a capacitor and input to

Pin 9.

UHF reception

—3—

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