TDA1576T Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Fabricante
TDA1576T Datasheet PDF : 16 Pages
| |||
Philips Semiconductors
FM/IF amplifier/demodulator circuit
Product specification
TDA1576T
SYMBOL
PARAMETER
Standby switch; see Fig.9
V5
input voltage for FM on
input voltage for FM off
linear range
I5
input current
∆-V---T-5-
temperature dependence
Supply voltage smoothing
V1-2
internal voltage drop
R1-2
internal resistor
CONDITIONS
MIN. TYP. MAX. UNIT
V-----3-V-,---7-3-(-,-m--7--a--x--) = 0.9 ;
V19 = 0.3 V
V5 = 0 to 2 V
V5 = 3.5 to 15 V
FM on (3.5VBE)
FM off (5VBE)
2.4
2.5
−
V
−
2.9
3
V
−
350 −
mV
−
−
−100 µA
−
−
1
µA
−
7
−
mV/K
−
10
−
mV/K
proportional to
V1 − 3VBE
80
210 400 mV
5.8
8.3
10.8 kΩ
OPERATING CHARACTERISTICS
VP = 8.5 V; fIF = 10.7 MHz; RS = 60 Ω; fm = 400 Hz with ∆f = ±22.5 kHz; 50 µs de-emphasis (C8-9 = 6.8 nF);
Tamb = 25 °C and measurements taken in Fig.1; unless otherwise specified. The demodulator circuit is adjusted at
minimum second harmonic distortion with ViIF = 1 mV.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
IF amplifier and demodulator
ViIF(rms) input sensitivity (RMS value)
VoAF(rms)
VoN
AF output voltage (RMS value)
noise voltage for ViIF = 0 (RMS value;
pins 8 and 9)
weighted noise voltage
S/N
signal-to-noise ratio (pins 8 and 9)
αAM
AM suppression
αFM
∆V8, 9
α3H
RR
FM suppression for FM off
AFC shift in relation to minimum second
harmonic distortion α2H
DC offset at second harmonic distortion
distortion for third harmonic
ripple rejection Vripple = 200 mV on VP
−3 dB before limiting 14
S/N = 26 dB
−
S/N = 46 dB
−
60
RS = 300 Ω;
−
f = 250 to 15000 Hz
in accordance with
−
“DIN 45405”
ViIF = 1 mV (RMS);
−
see Fig.3
ViIF = 0.5 to 200 mV;
−
FM: 70 Hz; ±15 kHz;
AM: 1 kHz; m = 30%
ViIF = 500 mV; V5 = 3 V 80
ViIF = 0.03 to 500 mV −
operating
−
mute or FM off
−
−
f = 100 Hz
43
22
35
µV
10
−
µV
55
−
µV
67
75
mV
900 −
µV
2
−
mV
72
−
dB
50
−
dB
−
−
dB
25
−
mV
0
±100 mV
0
±50 mV
0.65 −
%
48
−
dB
1998 Nov 18
8
Share Link: 