TA31275FN Datasheet, PDF (13/25 Pages) Toshiba Semiconductor – AM/FM RF/IF Detector IC for Low Power Wireless System

Typical Test Circuit (FSK)
TA31275FN/ TA31275FNG
V_CC
V_CC
1000 pF
C13
24 23 22 21 20 19 18
LPF
LPF AF _{RSSI REF AM/FM MIX}
OUT IN OUT
AM/FM
IN
RSSI _Comparator
17 16 15 14 13
GND1 ^RF CHARGE RF RF
OUT
DEC IN
OSC
IN
1
×8
Detector
MIX
LOBS OUT ^VCC1
2
3
4
5
IF IF
IN DEC ^GND2
6
7
8
BS QUAD VCC2 DATA
9 10 11 12
V_CC
V_CC
V_CC
BPF
0.01 µF
V_CC
Test Circuit 1
(1) V_RSSI
0.01 µF
6
SG
(2) D_R
0.01 µF
21
6
SG
V
(3) V_DATAL
2.5 V
V 20
3.0 V
V 23
R = 10 kΩ
12
V_CC
V
(4) I_DATAH
2.5 V
V 20
3.0 V
V 23
V_CC
DATA
V_CC
12
V_CC
V
12
V_CC
100 kΩ
I = V/100 × 10³
13
03-01-23