參數(shù)資料
型號(hào): TDA1576
廠商: NXP SEMICONDUCTORS
元件分類: 接收器
英文描述: FM/IF amplifier/demodulator circuit
中文描述: FM, AUDIO DEMODULATOR, PDIP18
封裝: 0.300 INCH, PLASTIC, SOT-102-1, DIP-18
文件頁(yè)數(shù): 6/16頁(yè)
文件大?。?/td> 128K
代理商: TDA1576
1998 Nov 18
6
Philips Semiconductors
Product specification
FM/IF amplifier/demodulator circuit
TDA1576
CHARACTERISTICS
V
P
= 7.5 to 20 V; f
IF
= 10.7 MHz; R
S
= 60
; f
m
= 400 Hz with
f =
±
22.5 kHz; 50
μ
s de-emphasis (C
8
9
= 6.8 nF);
T
amb
= 25
°
C and measurements taken in Fig.1; unless otherwise specified. The demodulator circuit is adjusted at
minimum second harmonic distortion for V
iIF
= 1 mV and a deviation
f =
±
75 kHz.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Supply
I
P
supply current without load
I
12
= I
13
= 0; V
P
= 8.5 V
I
12
= I
13
= 0; V
P
= 15 V
10
12
16
18
23
25
mA
mA
IF amplifier/detector
V
iIF(rms)
input sensitivity (RMS value; pin 15)
3 dB before limiting
22
8
30
μ
V
μ
V
= 26 dB
= 46 dB
35
μ
V
V
oIF(p-p)
output voltage at pins 3 and 7
(peak-to-peak value)
output resistance
input impedance
input capacitance
output resistance
DC output voltage
Z
3, 7
= 10 pF parallel to
1 M
680
mV
R
3-7
Z
4-6
C
4-6
R
8, 9
V
8, 9
60
120
250
30
1
3.7
5.5
9.8
67
135
75
150
k
pF
k
V
V
mV
mV
V
P
= 8.5 V
V
P
= 15 V
Q
L
= 20; V
P
= 8.5 V
Q
L
= 20; V
P
= 15 V
V
oAF(rms)
AF output voltage (RMS value)
THD
total harmonic distortion
single tuned circuit
two tuned circuits
signal plus noise-to-noise ratio
(pins 8 and 9)
Q
L
= 20
0.1
0.02
76
%
%
dB
B = 250 Hz to 15 kHz;
V
i
> 1 mV (RMS); V
P
= 8.5 V
B = 250 Hz to 15 kHz;
V
i
> 1 mV (RMS); V
P
= 15 V
V
iIF
= 10 mV;
FM: 70 Hz;
f =
±
22.5 kHz;
AM: 1 kHz; m = 30%; note 1
α
> 40 dB
V
P
= 100 mV (RMS);
C
2
= 47
μ
F
V
P
= 8.5 V
V
P
= 15 V
80
dB
α
AM
AM suppression
54
dB
V
iIF
α
100
IF input voltage
hum suppression at f = 100 Hz
0.5
43
48
500
mV
dB
AFC tuning slope at Q
L
= 20
8.5
17
mV/kHz
mV/kHz
S
N
+
N
S
N
+
N
S
N
+
N
V
f
o
----------------
9
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