TA31275FN/ TA31275FNG
03-01-23
20
Reference Data (with a broadband ceramic filter (280 k) used)
Reference Data (with a narrowband ceramic filter (150 k) used)
5
1.5
4.5
5.5
2
2.5
3.5
4.5
2.5
1
0.5
1.5
3
4
3.5
VCC = 5 V
f (RF) in
= 314.9 MHz
Dev
= ±20 kHz
fmod
= 600 Hz
f (Lo) in = 40.7 MHz
V (Lo) in = 100dBV
LOBS
= “H”
No SAW filter
<Meas point>
FILOUT at audio analyzer
0
Demodulation Output –
Supply Voltage Characteristics
Waveform Shaping Output Duty Ratio –
Supply Voltage Characteristics
12-dB SINAD Sensitivity –
FM Modulation Characteristics
12-dB SINAD Sensitivity –
Frequency Characteristics (AM and FM)
12-dB SINAD Sensitivity –
Supply Voltage Characteristics
S Curve – Supply Voltage Characteristics
Supply voltage
VCC (V)
Supply voltage
VCC (V)
FM modulation
(kHz)
RF IN input frequency
f (RF) in
(MHz)
Supply voltage
VCC (V)
RF IN input frequency
f (RF) in
(MHz)
W
a
ve
form
shap
ing
outpu
t
d
u
ty
ratio
DR
(%)
Demodula
tion
ou
tp
ut
V
o
d
(m
V
rms)
12-dB
SI
NA
D
sen
s
it
ivi
ty
(dB
VEM
F
)
12-dB
SI
NA
D
sen
s
it
ivi
ty
(dB
VEM
F
)
AFOUT
p
in
volt
age
(
V
)
12-dB
SI
NA
D
sen
s
it
ivi
ty
(dB
VEM
F
)
0
1
140
2
3
5
6
100
80
60
40
4
Dev
= ±20 kHz
120
20
Dev
= ±40 kHz
Dev
= ±60 kHz
VCC = 5 V
f (RF) in
= 314.9 MHz
fmod
= 600 Hz
f (Lo) in = 40.7 MHz
V (Lo) in = 100dBV
LOBS
= “H”
No SAW filter
<Meas point>
FILOUT at mult meter
40
0
60
1
3
5
6
56
52
48
46
4
VCC = 5 V
f (RF) in
= 314.9 MHz
fmod
= 600 Hz
f (Lo) in = 40.7 MHz
V (Lo) in = 100dBV
LOBS
= “H”
No SAW filter
<Meas point>
DATA at oscilloscope
42
50
54
58
Dev
= ±40 k
44
2
Dev
= ±20 k
7
0
1
3
5
6
3
5
4
VCC = 5 V
f (RF) in
= 314.9 MHz
fmod
= 600 Hz
f (Lo) in = 40.7 MHz
V (Lo) in = 100dBV
LOBS
= “H”
SAW FILTER
No SAW filter
4
2
6
2
10
314.7
10
314.75 314.8
315
315.1
2
0
4
8
314.9
6
Dev
= ±40 kHz
Dev
= ±20 kHz
AM
8
4
2
6
314.85
314.95
315.05
VCC = 5 V
f (RF) in
= 314.9 MHz
fmod
= 600 Hz
f (Lo) in = 40.7 MHz
V (Lo) in = 100dBV
LOBS
= “H”
SAW FILTER
No SAW filter
<Meas point>
FILOUT at audio
analyzer
30dB
VEMF
40dB
VEMF
0
314.4
2.5
314.55
314.7
315
315.15
315.45
0.5
1.5
2
1
VCC = 5 V
fmod
= 600 Hz
f (Lo) in = 40.7 MHz
V (Lo) in = 100dBV
LOBS
= “H”
No SAW filter
<Meas point>
FILOUT at multi meter
50dB
VEMF
314.85
315.3
20dB
VEMF
10dB
VEMF
0dB
VEMF