ta31275 TOSHIBA Semiconductor CORPORATION, ta31275 Datasheet - Page 20

• Manufacturer Part Number: ta31275
• Description: Am/fm Rf/if Detector Ic For Low Power Wireless System
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Reference Data
Reference Data
−0.5
−1.5
−2.5
−3.5
−4.5
140
120
100
80
60
40
20
−1
−2
−3
−4
−5
−6
−7
−1
−2
−3
−4
−5
0
0
1.5
1
0
1
Supply Voltage Characteristics
FM Modulation Characteristics
Supply Voltage Characteristics
2
12-dB SINAD Sensitivity –
12-dB SINAD Sensitivity –
2.5
Supply voltage V
Supply voltage V
Demodulation Output –
Dev = ±60 kHz
Dev = ±40 kHz
Dev = ±20 kHz
FM modulation (kHz)
(with a broadband ceramic filter (280 k) used)
(with a narrowband ceramic filter (150 k) used)
2
3
3.5
3
V CC = 5 V
f (RF) in = 314.9 MHz
fmod = 600 Hz
f (L o ) in = 40.7 MHz
V (L o ) in = 100dBµV
LOBS = “H”
SAW FILTER
No SAW filter
V CC = 5 V
f (RF) in = 314.9 MHz
Dev = ±20 kHz
fmod = 600 Hz
f (L o ) in = 40.7 MHz
V (L o ) in = 100dBµV
LOBS = “H”
No SAW filter
<Meas point>
FILOUT at audio analyzer
4
CC
CC
V CC = 5 V
f (RF) in = 314.9 MHz
fmod = 600 Hz
f (L o ) in = 40.7 MHz
V (L o ) in = 100dBµV
LOBS = “H”
No SAW filter
<Meas point>
FILOUT at mult meter
4
(V)
(V)
4.5
5
5
5.5
6
6
20
−10
2.5
1.5
0.5
60
58
56
54
52
50
48
46
44
42
40
10
−2
−4
−6
−8
314.7
314.4
8
6
4
2
0
2
1
0
0
40dBµVEMF
30dBµVEMF
S Curve – Supply Voltage Characteristics
Frequency Characteristics (AM and FM)
Waveform Shaping Output Duty Ratio –
314.75 314.8
314.55 314.7
Dev = ±20 k
Dev = ±40 k
RF IN input frequency f (RF) in (MHz)
20dBµVEMF
RF IN input frequency f (RF) in (MHz)
AM
1
Supply Voltage Characteristics
50dBµVEMF
TA31275FN/ TA31275FNG
12-dB SINAD Sensitivity –
Supply voltage V
314.85
2
Dev = ±20 kHz
10dBµVEMF
0dBµVEMF
Dev = ±40 kHz
314.85
314.9
3
315
V CC = 5 V
f (RF) in = 314.9 MHz
fmod = 600 Hz
f (L o ) in = 40.7 MHz
V (L o ) in = 100dBµV
LOBS = “H”
No SAW filter
<Meas point>
DATA at oscilloscope
314.95
CC
V CC = 5 V
fmod = 600 Hz
f (L o ) in = 40.7 MHz
V (L o ) in = 100dBµV
LOBS = “H”
No SAW filter
<Meas point>
FILOUT at multi meter
V CC = 5 V
f (RF) in = 314.9 MHz
fmod = 600 Hz
f (L o ) in = 40.7 MHz
V (L o ) in = 100dBµV
LOBS = “H”
SAW FILTER
No SAW filter
<Meas point>
FILOUT at audio
analyzer
4
315.15
(V)
315
315.3
315.05
5
315.45
315.1
03-01-23
6