TDA4321XS ,FM-IF IC with Counter, analog STS, fi...Characteristics T = +25°C Page 9 ... 10ambTest Circuit Page 11Application Circuit Page 12Diagrams P ..
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TDA4321XS
FM-IF IC with Counter, analog STS, fi...
FS: 04/93
FM-IF IC with counter output, analog STS, field strength
indicator, noise detector and mute settingTable of ContentsPage1
Functional Description, ApplicationPage2
Circuit DescriptionPage3
Block DiagrammPage4
Pin AssignmentPage5
Package OutlinePage6
Absolute Maximum RatingsPage7
Operational RangePage8
AC / DC Characteristics Tamb = +25°CPage9 ... 10
Test CircuitPage11
Application CircuitPage12
DiagramsPage13 ...16
FS: 04/93The FM-IF-Demodulator TDA 4321 XS has been developed especially for car radio applications. The on-chip multipath
identification circuit activates an interference suppression circuit in case of multipath interferences.
The TDA 4321 XS includes an:
- 7stage limiter amplifier
- Coincidence demodulator
- Counter output with request input
- Field strength output
- Analog Multipath identification circuit
- Adjustable muting depth (with full muting ≥80dB)
- STS function.
This device is ESD protected.
FS: 04/93The IC includes a 7 stage capacitive coupled-limiter amplifier with coincidence demodulator and AF output. The AF
output signal can be continuously attenuated to decrease the noise.
In case of multipath interferences, the TDA 4321 XS includes an identification circuitry with analog output.
There is a field strength output (with min. 76 dB dynamic range, typ. ±1 dB nonlinearity and typ. ±3 dB temperature
drift), an IF-Counter output and an adjustable muting (with full muting ≥80dB). An STS output with adjustable
threshold and stop window is available.
FS: 04/93
FS: 04/93
FS: 04/93Supply voltageVS0+13.5VJunction temperature Tj+150°CStorage temperature Ts+125°CESD voltage, HBMVESD-4+4kV
(1.5 kΩ ,100pF)Thermal ResistanceRthsa115K/W
FS: 04/93Supply voltage VS+7.5+11VAmbient temperatureTamb-40+85°C
