TDA2546A Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Fabricante
TDA2546A Datasheet PDF : 10 Pages
| |||
Philips Semiconductors
Quasi-split-sound circuit
with 5,5 MHz demodulation
Product specification
TDA2546A
CHARACTERISTICS
VP = V15-16 = 12 V; Tamb = 25 °C; measured at fVC = 38,9 MHz, fSC1 = 33,4 MHz, fSC2 = 33,158 MHz:
Vision carrier (V.C.) modulated with different video signals (see below); modulation depth 100% (proportional to 10%
residual carrier).
Vision carrier amplitude (r.m.s. value) is VVC = 10 mV.
Vision-to-sound carrier ratios are VC/SC1 = 13 dB and VC/SC2 = 20 dB.
Sound carriers (SC1, SC2) modulated with f = 1 kHz and deviation ∆f = ± 30 kHz.
For measuring circuit see Fig.2; unless otherwise specified.
PARAMETER
SYMBOL
MIN.
TYP. MAX. UNIT
Supply (pin 15)
Supply voltage
Supply current
I.F. amplifier
Input voltage for start of gain control
(intercarrier signals −3 dB)
Input voltage for end of gain control
(intercarrier signals + 1 dB)
I.F. gain control range
Control voltage range (see Fig.3)
Input resistance
Input capacitance
Intercarrier generation
Output voltage; 5,5 MHz (r.m.s. value)
Output voltage; 5,742 MHz (r.m.s. value)
D.C. output voltage
Allowable d.c. load resistance at the output
Allowable output current
Frequency demodulator (measured at f = 5,5 MHz)
Input voltage vor start of limiting (r.m.s. value)
Maximum input voltage (r.m.s. value)
D.C. output voltage
A.F. output voltage (r.m.s. value)
D.C. output voltage
Allowable d.c. load resistance at the output
Allowable a.c. load impedance at the output
Total harmonic distortion
Internal de-emphasis resistance
Switching voltage (pin 4)
for mute
for a.f. on
VP = V15-16
IP = I15
VVC1-18(rms)
VVC1-18 (rms)
∆Gv
V3-16
R1-18
C1-18
V14-16(rms)
V14-16(rms)
V14-16
R14-16
−I14
V12-16(rms)
V12-16 (rms)
V11,12,13-16
V6-16(rms)
v6-16
R6-16
Z6-16
THD
Ri5-16
V4-16
V4-16
10,8
12
13,2 V
40
57
75
mA
−
150
200
µV
100
250
−
mV
60
64
−
dB
4
−
Vp
V
−
2,5
−
kΩ
−
1,5
−
pF
60
100
140
mV
27
45
63
mV
−
5,9
−
V
7
−
−
V
−
−
1
mA
−
−
100
µV
−
200
−
mV
−
2,2
−
V
450
600
810
mV
−
4
−
V
27
−
−
kΩ
10
−
−
kΩ
−
−
1
%
−
1
−
kΩ
9
−
−
V
−
−
2,5
V
February 1985
5
Share Link: 