CXA1741Q Ver la hoja de datos (PDF) - Sony Semiconductor

Número de pieza

componentes Descripción

Fabricante

CXA1741Q

IF Amplifier for Analog Cellular Communications

Sony Semiconductor 

CXA1741Q

Pin No. Symbol

26 MIXIN

Pin voltage I/O

DC AC resistance

1.3 V

Equivalent circuit

27

Description

RF AMP output monitor.

Connected to the MIXER

input in the IC.

27 MIXPS 1.3 V

28 MIX ADJ2 0.1 V

MIXER

26

RF AMP

Balance adjustment for

mixers 1 and 2.

29 MIX ADJ1 0.1 V

4k 4k

660

28 29

4k 4k

660

30

T3

31

T4

32

T5

33

VCC1 3.0 V

34 GND1 0 V

35

T6

36 FADJ1 2.2 V

37 FADJ2 1.5 V

147

36

37

147

IC operational check.

Power supply.

Supplies current to the PSN,

BPF, and BIAS circuits.

Ground.

IC operational check.

When the resistance value

of an external resistor

connected between Pins

36 and 37 is varied, the

center frequency of the

BPF in the IC changes

accordingly.

—7—

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