STV8247_06 Datasheet, PDF (141/156 Pages) STMicroelectronics – Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders

STV82x7
Electrical Characteristics
13.4 Crystal Oscillator
Symbol
Parameter
f_P
DF/F_P
DF/F_T
C1
R_S
C_S
Crystal Series Resonance Frequency (at C21 = C22 = 27 pF load capacitor)
Frequency Tolerance at 25 °C
Frequency Stability versus Temperature within a range from 0 to 70 °C
Motional Capacitor
Serial Resistance
Shunt Capacitance
Min. Typ. Max. Units
27
MHz
-30
+30 ppm
-30
+30 ppm
15
fF
30
Ω
7
pF
13.5 Analog Sound IF Signal
Symbol
Parameter
Test Conditions
Min. Typ. Max. Units
BAND_SIF SIF Frequency Flatness
AGC_ERR at 0, frequency range
from 4 to 7 MHz
R_INSIF SIF Input Resistance
60
DC_INSIF SIF Input DC Level
C_INSIF SIF Input Capacitance
FM Carrier
VSIF_FM SIF Input Sensitivity
SNR 40dB
RMS unweighted, 20 Hz-15 kHz,
Standard B/G 27 kHz FM
350
Deviation,1 kHz
FM50k (Standard)
±15
DEV_FM
FM200k
FM Maximum Deviation
FM350k
Signal Lost, DK mode, FM
prescale at 0
FM500k
DFSIF_FM
SIF Carrier Accuracy for
FM
Standard (FM50k)
Shifted Standard
(FM50k with DCO
compensation)
R_FM/QPSK Carrier Ratio FM/QPSK for NICAM System
NICAM mute, FAR_MODE is
active, standard BG, 100 mV_PP
level for FM carrier
AM Carrier
VSIF_AM SIF Input Sensitivity
Unmodulated, -3 dB at output
amplitude AGC_ERR at 21d
Standard L, 54% AM Depth,
19
1 kHz
VMAX_SIF_AM SIF Maximum Input Level
Unmodulated, THD at 1%, 54%
AM Depth, AGC_ERR at 0
DEV_AM Modulation Depth for AM
THD at 1%
0
0.6
3
dB
72
85
kΩ
0.9
V
3
pF
µV_PP
±50 ±115
±200 ±320
kHz
±350 ±560
±500 ±700
±1
±5 kHz
±120 kHz
40
dB
mV_PP
1.3
V_PP
100 %
141/156