STV8225 Fast Delivery |IC PHOENIX CO.,LIMITED

STV8225 ,AM SIF CIRCUITSTV8225AM SIF CIRCUIT.SOUND AM SYNCHRONOUS DEMODULATOR.AM/FM AUDIO SWITCH.AV/TV AUDIO SWITCH.MUTE I ..
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STV8225
AM SIF CIRCUIT
STV8225 SIF CIRCUIT INPUT
AGC CAPACITOR
GND
LEVEL SWITCH SOUND INPUT
MUTE INPUT
MAIN SOUND OUTPUT INPUT
MEAN CAPACITORCC
EXTERNAL SOUND INPUT
SWITCHING INPUT
EXTERNALSOUND OUTPUT
NOT TO BE CONNECTED
PIN CONNECTIONS
DIP14
(Plastic Package)
ORDER CODE: STV8225
.SOUND AM SYNCHRONOUS DEMODULATOR.AM/FM AUDIO SWITCH.AV/TV AUDIO SWITCH.MUTE INPUT
DESCRIPTION
The STV8225is intended for the demodulationof
the AM soundof theL standard.
Usedas an add onto the STV8224it permitsto
designa multistandard set with the needed
switchesfor one SCART plug.
AGC Capacitor
Switching
Input
Mute
Input INPUT
AGC
VCCLevel
SwitchMean
Capacitor
MUTE
LOGIC
CONT
SW1
SW2 9
Main Sound Output Sound Input
External Sound Output
External Sound Input
STV8225
8225-02.EPS
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
VCC Supply Voltage 13 V
Tstg Storage Temperature -40, +150 oC
Toper Operating Temperature 0, +70 oC
Ptot Power Dissipation 0.35 W
8225-01.TBL
THERMAL DATA
Symbol Parameter Value Unit
Rth(j-a) Junction-ambient Thermal Resistance Max. 90 o C/W
8225-02.TBL
ELECTRICAL CHARACTERISTICS (VCC =9V, VIN= 10mVRMS,fSC= 32.4MHz,fM= 1kHz,= 54% modulation depth, AudioBW= 40Hzto 15kHz, Tamb =25oC, unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
VCC Supply Voltage Pin12 8 9 10 V
ICC Supply Current Pin12 20 30 mA
Supply Voltage Rejection Pins9,7,12- VRipple= 0.5VPP,f= 100Hz 45 53 dB AMPLIFIER1,14 Input Resistance (Pins 1-14) Resistance between Pin1 and14 2 kΩ1,14 Input Capacitance (Pins 1-14) Capacitance between Pin1 and14 2 pF
VIF min MinimumIF Input Signal IF inputsignalfor VOUT =VNOM- 3dB 70 μVRMS
VIF max MaximumIF Input Signal IF inputsignalfor VOUT =VNOM+ 1dB 75 mVRMS
DAV AGC Range DAV= VIF max/ VIF min 61 dB
lAGC Maximum AGC Output Current
(Pin2)
Charging and discharging ±35 ±50 ±65 μA
STV8225
ELECTRICAL CHARACTERISTICS (continued) (VCC =9V, VIN= 10mVRMS,fSC= 32.4MHz,fM= 1kHz,= 54% modulation depth, Audio BW= 40Hzto 15kHz, Tamb =25oC, unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit DEMODULATOR Output Voltage (Pins 7-9) Level switch (Pin4) open
Level switch (Pin4) connectedto GND
mVRMS
mVRMS Bandwidth (Pins 7-9)
Lower Limit
Upper Limit
-3dB versus nominal signal Hz
kHz
Harmonic Distorsion (Pins 7-9) THD+ Noise 0.7 1.8 %
S/N (Pins 7-9) Weighted accordingto CCIR 468-4 55 dB
MUTE
Threshold Level (Pin6) Mute modeif voltage below threshold 0.2 0.3 0.4 V
Attenuation (Pins 7-9) Level switch (Pin4) connectedto GND -AM mode 96 dB
AUDIO SWITCHES
Switching Voltage (Pin 10) Operation mode
View1 Level1 (Pin10) For voltage below this level
TV-FM mode: Pin7 connectedtoA
Pin9 connectedtoC
1.8 2.3 2.6 V
View2 Level2 (Pin10) For voltage below this level
TV-AM mode: Pin7 connectedtoA
Pin9 connectedtoA
4.1 4.6 4.9 V
View3 Level3 (Pin10) For voltage below this level
AV-AM mode: Pin7 connectedtoB
Pin9 connectedtoA
For voltage above this level
AV-FM mode: Pin7 connectedtoB
Pin9 connectedtoC
6.4 6.8 7.2 V
Input Current (Pin 10) Source current 0.3 2 μA
Input Dynamic Range (Pins 5-11) 2 VRMS
Input Resistance (Pins5-11) 35 50 kΩ
Switch Gain VIN =2VRMS,f= 1kHz
Pin7vs Pin11 and Pin9vs Pin5
-0.6 -0.1 0.4 dB
Crosstalk f= 1kHz 70 85 dB
Output Resistance (Pins 7-9) 70 100 130 Ω
Output Current Source (Pins 7-9) 1 mA
Switch Distorsion VIN =2VRMS,f= 1kHz, THD+ Noise,
Pin7vs Pin11 and Pin9vs Pin5
0.1 0.5 %
Output Noise Unweighted 7 20 μVp PlopatAF Output Pin 10 50 mV
8225-04.TBL
Viev1
Viev2
Viev3 VCC
V10
8225-03.EPS
STV8225
IF1
C20
C21
100nF
47nF
C251
C12C11
100nF
C1022
Level
Switch
R11
ExternalSoundInput SoundOutput
C2210
C26100nF
C144.7nF
C15
680nF10k
Tuner
AGC
Delay
C3310
BC337
R3515
R34
R1368
R15
6.8k
DZ1BZX55C
R14
27k
C16
C18168nF
SOUND
SAW
FILTER
STD
VIDEO
SAW
FILTERBGDKL
AGC
12V
IF2
9V6
R17100k
R16100k
AFC
C171
C32
10nF
IC1
STV8225
IC2
STV8224
LC1
38.9MHz
C2910nF
SW1
Mute
C31100nF
VolumeControl
SoundOutputSwitched
R3210k
C30
470nF
CVBSInputExternal
R2975
CVBSOuput
R191k
Switching
Voltage
C241nF
C28
68pF
CF1
5.5MHz
BFP
1N4148
CF2
6.5MHz
BFP
1N4148
R201k
R263.9k
R25
2.7k
BC547
R284.7k
R24
4.7k
+9V
R21
1.8k
R27
1.8k
SW4STD
R22
CF3
TRAP
FILTER
(5.5MHz
6.5MHz)
C27470nF
R12
2.2k
R1875
+9V
BC547
R1022
CVBSOutput(to
ART)
C13
APPLICATION DIAGRAM
STV8224- STV8225
STV8225
1112VCC
1mA
VCC
100Ω
VCC
50k
VREF
4.3V
SC_IN CONTROL SC_OUT
STV8225
5kΩ
VREF
4.3V
C_MEAN
4.2V
IF1
IF2
1002.7V
(discharge)
(charge)
C_AGC
VCC
114k
66k
LSW
VCC
50k
VREF
4.3V
FM_IN
MUTE
VCC
1mA
100Ω
AUDIO6.4V
6.0V
1.3k
26k
V6.4
(if used)
GND
8225-04.EPS
INPUT/OUTPUT PINS CONFIGURATION
STV8225
PM-DIP14.WMF
PACKAGE MECHANICAL DATA PINS- PLASTIC DIP
Dimensions Millimeters Inches
Min. Typ. Max. Min. Typ. Max. 0.51 0.020 1.39 1.65 0.055 0.065 0.5 0.020 0.25 0.010 20 0.787 8.5 0.335 2.54 0.100 15.24 0.600 7.1 0.280 5.1 0.201 3.3 0.130 1.27 2.54 0.050 0.100
DIP14.TBL
Information furnishedis believedtobe accurateand reliable. However, SGS-THOMSON Microelectronics assumes noresponsibility
forthe consequencesof use ofsuchinformation norfor anyinfringementof patents orotherrightsof third parties whichmay result
fromits use.No licence isgrantedby implication orotherwise underany patentor patent rightsof SGS-THOMSON Microelectronics.
Specifications mentionedin this publicationare subjectto change without notice. This publication supersedes and replacesall
information previously supplied. SGS-THOMSONMicroelectronics products arenot authorized foruseas criticalcomponentsinlife
support devicesor systems without express written approvalof SGS-THOMSON Microelectronics. 1995 SGS-THOMSON Microelectronics-All Rights Reserved
PurchaseofI2C Components ofSGS-THOMSON Microelectronics, conveysa license underthe Philips2C Patent. Rightsto use these componentsinaI2C system,is granted provided thatthe systemconformsto
theI2C Standard Specificationsas definedby Philips.
SGS-THOMSON Microelectronics GROUP OFCOMPANIES
STV8225

Partno	Mfg	Dc	Qty	Available	Descript
STV8225	STM	N/a	1	avai	AM SIF CIRCUIT