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Details, datasheet, quote on part number:TDA4482-D
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| Part: | TDA4482-D |
| Category: | Communication => Telephony => Voice Processors |
| Description: | Quasi-parallel Sound Processor For TV Sets |
| Company: | Temic Semiconductors (acquired by ATMEL Corporation) |
| Datasheet: | Download TDA4482-D datasheet File size : 111 kB |
| Request For quote: | Find where to buy TDA4482-D
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Datasheet text preview:
TDA4482-D
Quasi-Parallel Sound Processor for TV Sets
Technology: Bipolar Features
D High signal sensitivity D Simple filter configuration and few external
components
D Processing of two carrier stereo signals D ESD protected D Low intercarrier distortions
D D D D
Alignment-free intercarrier mixer Optimum tuning characteristics Improved linearity for NICAM applications AF output level matched to SIMAVELEC condition
Case: DIP18
Block Diagram
Figure 1.
TELEFUNKEN Semiconductors Rev. A1, 29-Aug-96
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TDA4482-D
Pin Configuration
Pin 12 3 4 5 6 78 9 Function Vision-IF-carrier input Intercarrier input 5.74 MHz AGC storage capacitor Intercarrier output 5.74 MHz AF output 1 FM demod circuit 5.74 MHz Ground Pin 1011 12 13 14 15 1617 18 Function FM-demode circuit 5.5 MHz AF output 2 Intercarrier output 5.5 MHz Supply voltage Intercarrier input 5.5 MHz Sound-IF-carrier input Not conneccted
Circuit Description
This circuit configuration permits high-quality processing of audio carriers for FM-sound standards, providing separate inputs for the video and audio carrier. The audio carrier signal is passed to two multiplying mixer arrangements via a 3-stage variable wideband amplifier with led level output signals. One mixer generates the gain-control signal. The second mixer operates as an intercarrier demodulator and supplies the intermediate AF carrier. The video carrier signal required from the intercarrier is decoupled in a prelimited and selected form from the demodulator tank of the intermediate video frequency circuit (TDA4453 or TDA4439) and led to the intercarrier mixer via a limiting amplifier. Depending on the system, the Nyquist range of the IF input filter in the video channel affects the attainable AF signal-to-noise ratio. The audio PM IF carrier reaches the quadrature demodulators via an inter-connected IF filter and subsequent limiting amplifier. The resulting AF signals are led via a low-pass amplifier with increased level to the buffered output stages. Switching can take place with TTLequivalent levels.
Absolute Maximum Ratings
Reference point Pin 9, 18, unless otherwise specified Parameters Supply voltage Pin 14 Supply current Pin 14 External voltages Pins 1, 2, 3, 4, 5, 7, 8, 10, 11, 12, 13, 15, 16 and 17 Power dissipation (in soldered position) Junction temperature Ambient temperature range Storage temperature range Symbol VS IS Vext Ptot Tj Tamb Tstg Value 10 to 13.5 80 6 1 125 25 to +70 25 to +125 Unit V mA V W °C °C °C
Thermal Resistance
Parameters Junction ambient Symbol RthJA Maximum 60 Unit K/W
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TELEFUNKEN Semiconductors Rev. A1, 29-Aug-96
TDA4482-D
Electrical Characteristics
VS = 12 V, Tamb = 25°C, reference point Pin 9, fPC = 38.9 MHz, fSC1 = 33.43 MHz, fSC2 = 33.1578 MHz, SC1/SC2 = 7 dB, unless otherwise specified Parameters Supple voltage range Supply current Output dc voltage Picture carrier input voltage Min. sound carrier input voltage SC1 AGC range Audio output voltage Audio-voltage difference between both outputs Harmonic distortion 1) Test Conditions / Pin Pin 14 Pin 14 Pin 6, 12 Pin 12 (5.5 MHz-output signal 3 dB) Pin 1617 FM deviation = 27 kHz, Pin 6, 12 Pin 6, 12 fmod = 1 kHz, FM deviation = 30 kHz Pin 6, 12 (VAF3 dB) fmod= 1 kHz, m = 30% 3) V3(15)=10 mV, f= 5.5 (5.74) MHz Symbol VS IS V0 v v Min 10 55 10 Typ 62 3.6 20 50 65 500 1 0.5 Max 13.5 80 30 Unit V mA V mV mV dB mV dB %
60 v
DvAF
THD
Limiting threshold AM rejection
250 55
mV
dB
FM amplifier input R3,15 560 W resistance Min. output load Pin 6,12 R 3 kW Signal-to-noise ratio (standard B/G) according to CCIR 468-2 specifications v1617: SC1 = 10 mV, SC2 = 4.5 V PC: v12 = 20 mV, prelimited demodulator picture carrier signal from TDA4453 Black burst 1. channel/ 2. channel 2,3) (S+N)/N 62/60 dB Pin 6,12 Grid test signal 1. channel/ 2. channel 2,3) (S+N)/N 50/48 dB Pin 6,12
1) 2) 3)
FM tank circuits: operation quality factor = 22 Standard B/G IF-modulated FBAS signal Reference signal: fmod = 1 kHz, FM deviation = 30 kHz
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