STV2246H STMicroelectronics, STV2246H Datasheet - Page 29

• Manufacturer Part Number: STV2246H
• Manufacturer: STMicroelectronics

Specifications of STV2246H

• Lead Free Status / Rohs Status: Compliant

STV224X, STV228X, STV223X - ELECTRICAL CHARACTERISTICS
4.4.7 SIF Amplifier
Note 5: L standard Sc/Pc = -10 dB, Nyquist Pc = -6 dB, SIF input -4 dB with PIF input = 84 µV, BG standard Sc/Pc = -
Note 6: This parameter is not tested during production. It is tested on the validation bench during the qualification phase.
4.4.8 SIF AGC (FM)
4.4.9 SIF AGC (AM)
4.4.10 FM Demodulator
Electrical parameter valid in both QSS and Intercarrier modes, unless otherwise specified.
4.4.11 De-emphasis
29/86
deemp-T1 De-emphasis Time Constant
deemp-T2 De-emphasis Time Constant
THD_FM
Symbol
Symbol
_w_qss
vsvideo
Symbol
Symbol
Symbol
I
SIFMin
VINSIF
DFMX
_norm
DFMX
NORMAL
VOAF
GRSIF
C
R
AMR
SVR
I
S/N
S/N
FAST
INSIF
INSIF
I
I
C
D
13 dB, Nyquist Pc = -6 dB, SIF input -7 dB with PIF input = 85 µV.
Min. Broadcast Sound/Video Carri-
er Ratio
FM Audio Output Amplitude at AM/
FMOUT Pin
Maximum FM Deviation
Maximum FM Deviation
Total Harmonic Distortion
Audio S/N
Amplitude Modulation Rejection
Supply Voltage Rejection
S/N versus picture content, Inter-
carrier mode
SIF Input Sensitivity
Gain Control Range
Differential Input Capacitance
Differential Input Resistance
Charging Current
Discharging Current
Charging/Discharging Current
Charging/Discharging Current
Parameter
Parameter
Parameter
Parameter
Parameter
Intercarrier mode: SAW filter K2955M
at SNR 35 dB
FM dev = ±27 kHz BGDKI
FM dev = ±13.5 kHz MN
THD < 10%, normal audio mode,
AF = 1 kHz
QSS mode, Audio FM Wide mode
(reg 04h, d3d2 = 11),
AF = 1 kHz
FM dev = ±27 kHz BGDKI
Weighted according to CCIR468-4
Quasi-Peak
m = 30%, AF = 1 kHz
Intercarrier mode: SAW filter K2955M
Black picture,
White picture,
250 kHz squarewave
See Note 4
B,G,D,K,I standards
M, N, standards
- 3dB at AM/FMOUT Pin (see Note 5)
AM output amplitude,
FM subcarrier amplitude
- 3dB to +1dB at AM/FMOUT Pin
SIF Inputs (see Note 6)
SIF Inputs
Normal time constant
Fast time constant
Test Conditions
Test Conditions
Test Conditions
Test Conditions
Test Conditions
Min.
Min.
Min.
Min.
Min.
400
1.5
1.5
Typ.
Typ.
Typ.
Typ.
Typ.
±2.4
500
200
400
100
-30
0.3
2.4
55
32
45
52
50
52
50
75
55
40
60
±6
2
2
Max.
Max.
Max.
Max.
Max.
630
2.5
2.5
1
mV
µV
Unit
Unit
Unit
Unit
Unit
kHz
kHz
mA
mA
kΩ
dB
pF
µA
µA
dB
dB
dB
dB
dB
µs
µs
%
RMS
RMS