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參數(shù)資料
| 型號： | TDA1576T-T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 接收器 |
| 英文描述： | FM, AUDIO DEMODULATOR, PDSO20 |
| 封裝： | 7.50 MM, PLASTIC, MS-013, SOT163-1, SOP-20 |
| 文件頁數(shù)： | 15/16頁 |
| 文件大?。?/td> | 90K |
| 代理商： | TDA1576T-T |
1998 Nov 18
8
Philips Semiconductors
Product specication
FM/IF amplier/demodulator circuit
TDA1576T
OPERATING CHARACTERISTICS
VP = 8.5 V; fIF = 10.7 MHz; RS =60 ; fm = 400 Hz with f= ±22.5 kHz; 50 s de-emphasis (C8-9 = 6.8 nF);
Tamb =25 °C and measurements taken in Fig.1; unless otherwise specied. The demodulator circuit is adjusted at
minimum second harmonic distortion with ViIF = 1 mV.
Standby switch; see Fig.9
V5
input voltage for FM on
;
V19 = 0.3 V
2.4
2.5
V
input voltage for FM off
2.9
3
V
linear range
350
mV
I5
input current
V5 =0to2V
100
A
V5 = 3.5 to 15 V
1
A
temperature dependence
FM on (3.5VBE)
7
mV/K
FM off (5VBE)
10
mV/K
Supply voltage smoothing
V1-2
internal voltage drop
proportional to
V1 3VBE
80
210
400
mV
R1-2
internal resistor
5.8
8.3
10.8
k
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
IF amplier and demodulator
ViIF(rms)
input sensitivity (RMS value)
3 dB before limiting
14
22
35
V
S/N = 26 dB
10
V
S/N = 46 dB
55
V
VoAF(rms)
AF output voltage (RMS value)
60
67
75
mV
VoN
noise voltage for ViIF = 0 (RMS value;
pins 8 and 9)
RS = 300 ;
f = 250 to 15000 Hz
900
V
weighted noise voltage
in accordance with
“DIN 45405”
2
mV
S/N
signal-to-noise ratio (pins 8 and 9)
ViIF = 1 mV (RMS);
see Fig.3
72
dB
α
AM
AM suppression
ViIF = 0.5 to 200 mV;
FM: 70 Hz;
±15 kHz;
AM: 1 kHz; m = 30%
50
dB
α
FM
FM suppression for FM off
ViIF = 500 mV; V5 =3V
80
dB
V
8, 9
AFC shift in relation to minimum second
harmonic distortion
α
2H
ViIF = 0.03 to 500 mV
25
mV
DC offset at second harmonic distortion
operating
0
±100
mV
mute or FM off
0
±50
mV
α
3H
distortion for third harmonic
0.65
%
RR
ripple rejection Vripple = 200 mV on VP
f = 100 Hz
43
48
dB
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
3, 7
V
3, 7(max)
-----------------------
0.9
=
V
5
T
-------
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