CXA1742Q
Pin voltage
I/O
Pin No. Symbol
Equivalent circuit
Description
DC
AC resistance
26
MIXIN
1.3 V
RF AMP output monitor.
Connected to the MIXER
input in the IC.
27
26
27
MIXPS
1.3 V
MIXER
RF AMP
28
29
MIX ADJ2 0.143 V
MIX ADJ1 0.143 V
Balance adjustment for
mixers 1 and 2.
4k
4k
4k 4k
28 29
660
660
30
31
32
33
T3
T4
T5
IC operational check.
VCC1
3.0 V
0 V
Power supply.
Supplies current to the PSN,
BPF, and BIAS circuits.
Ground.
34
35
GND1
T6
IC operational check.
36
FADJ1 2.29 V
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.
147
36
37
37
FADJ2 1.55 V
147
—7—
SONY [ SONY CORPORATION ]
