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Details, datasheet, quote on part number:TDA4480
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Datasheet text preview:
TELEFUNKEN Semiconductors
TDA 4480-C
Multi standard quasi parallel-sound processor for TV-sets
Technology: Bipolar Features
D High signal sensitivity D Simple filter components configuration and few external D ESD protected D Alignment free AM demodulator for the standard L D VCO controlled mixer stage converts intercarrier frequencies of different standards into a preferred sound IF D Optimum tuning characteristic
D Processing of two carrier stereo signals D Low intercarrier distortions Case: 20-pin dual inline plastic
Figure 1 Block diagram
Preliminary Information
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TDA 4480-C
Pin Configuration
Pin 12 3 4 5 6 7 8-9 10 Symbol Function Vision-IF-carrier input Intercarrier input 5.74 MHz AGC time constant Intercarrier output 5.74 MHz Standard switch AF output 1 Phase tank circuit 5.74 MHz VC0 tank circuit Pin 11 12-13 14 15 16 17 18-19 20 Symbol
TELEFUNKEN Semiconductors
Function Ground Phase tank circuit 5.5 MHz AF output 2 Intercarrier output 5.5 MHz Supply voltage Intercarrier input 5.5 MHz Sound-IF-carrier input n.c.
Circuit Description
The integrated circuit allows the high quality processing of sound carrier for different TV standards. The circuit requires separate vision and audio carrier inputs. It delivers the output audio signal for mono, two channels or stereo applications. Audio carrier signal (simple or double carrier, FM and AM) is applied via three stage AGC controlled broad band amplifier which delivers regulated output signal for two mixing stages. One mixer works for AM-demodulation and AGC-function whereas the second mixer produces the sound intercarrier IF-frequencies (5.5/5.74 MHz). Vision carrier signal for the intercarrier generation is delivered from the demodulator tank of the video IF circuit (TDA 4439, TDA 4453). It is then matched via a limiter stage to the FM intercarrier mixer. FM-sound-IF-carrier reaches the quadrature demodulator via the selection circuit and the following limiter amplifier. The final audio signal is supplied to the low ohmic output (Pin 7,14) with low pass filter character. There is a switchable converter for different audio standards (4.5, 6.00 and 6.5 MHZ), which mixes the sound 1P-signal properly e.g. at 5.5 MHz. The VC0 (Pin 10) must be controlled across the sound output (Pin 7) which includes AFC-function. Sound signal at the AM-modulation is introduced via standard switch in the first sound channel, whereas the intercarrier, converter section and both FM demodulators are switched off. In case of sound IF converter operation, the second sound channel and the AM-section are switched off. The standard mode is controlled by a tristate signal on Pin 6.
Absolute Maximum Ratings
Reference point Pin 11, unless otherwise specified Parameters Supply voltage Supply current External voltage Pin 16 Pin 16 Pin 6 Pin 1, 2, 3, 4, 5, 7, 8, 9, 12, 13, 14, 15, 17, 18, 19 Symbol VS IS Vext Vext Ptot Tj Tamb Tstg Value 10 to 13.5 80 VS 6 1 125 - 25 to + 70 - 25 to + 125 Unit V mA V V W
_C _C _C
Power dissipation (in soldered position) Junction temperature Ambient temperature range Storage temperature range
2
Preliminary Information
TELEFUNKEN Semiconductors
TDA 4480-C
Symbol RthJA Value 60 Unit K/W
Thermal Resistance
Parameters Junction ambient
Electrical Characteristics
V5 = 12 V, Tamb = 25 _C, reference point pin 11, fPC = 38.9 MHz, fSC1 = 33.4 MHz, fSC2 = 33.1578 MHz, SC1/SC2 = 7 dB, unless otherwise specified Parameters Supply voltage range Supply current Output DC voltage Standard switching voltage Test Conditions / Pin Pin 16 FM-operation, AM-operation, Pin 16 Pin 16 Pin 7,14 Symbol VS IS IS V0 V V V I v v v 1.7 0 3.5 5 Min 10 Type 65 40 3.5 2.2 2.7 1.5 VS 20 20 Max 13.5 Unit V mA mA V V V V mA mV mV mV dB mVeff "1 0.5 1.5 3 3.0 dB % % kW
Standard B/G, Pin 6 Standard L, Pin 6 converter operation Pin 6 Standard switching current V6 x 5 V Pin 6 Picture carrier input voltage Pin 1,2 Min. sound carrier input 5.5 MHz-output Pin 18,19 voltage SC1 signal 3 dB Max. sound carrier input Pin 18,19 voltage SC1 AGC range Audio output voltage FM-deviation = 30 kHz m = 80 % Pin 7,14 Audio voltage difference Pin 7,14 between both outputs Harmonic distortion AMfmod = 1 kHz, Pin 7,14 operation FM-deviation = 30 kHz Harmonic distortion AMfmod = 1 kHz, Pin 7 operation m = 80 %, v18-19 = 10 mV Min. output load Pin 7,14 Signal to noise ratio (Standard B/G) according to CCIR 468-2 specifications, SC1: v18-19 = 10 mV, PC: v1-2 = 10 mV, prelimited demodulator picture carrier signal from TDA 4453 reference signal: fmod = 1 kHz, FM deviation = 30 kHz Black burst 1. channel/2. channel 1) Grid test signal 1. channel/2. channel 1) Converter DC voltage Tuning range Input resistance Input capacity Pin 7/14 Pin 7/14
10 50 100 65 500
v v d d R
(S=N)/N (S=N)/N
62/60 50/48
dB dB
V6 y 3.5 V
Pin 10 Pin 10 Pin 10 Pin 10
V10 f R C
2.7 9 100 12 13
V MHz kW pF
Preliminary Information
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