TDA3857 Philips Semiconductors, TDA3857 Datasheet
TDA3857
Available stocks
Related parts for TDA3857
TDA3857 Summary of contents
Page 1
... DATA SHEET TDA3857 Quasi-split sound processor with two FM demodulators Product specification File under Integrated Circuits, IC02 INTEGRATED CIRCUITS June 1994 ...
Page 2
... S/N (W) weighted signal-to-noise ratio ORDERING INFORMATION EXTENDED TYPE NUMBER PINS TDA3857 20 Note 1. SOT 146-1; 1996 November 28. June 1994 PARAMETER PACKAGE PIN POSITION DIL 2 Product specification TDA3857 MIN. TYP. MAX. 4 100 1 0.5 68 MATERIAL CODE plastic SOT146 UNIT V ...
Page 3
... Philips Semiconductors Quasi-split sound processor with two FM demodulators June 1994 Fig.1 Block diagram (standard B/G). 3 Product specification TDA3857 ...
Page 4
... MHz decoupling capacitor for FM2 demodulator AF2 (AF2) FM2I 17 intercarrier input for FM2 (5.74 MHz) GND 18 ground ( supply voltage P FMIF2 20 IF difference input 2 for B/G standard (38.9 MHz) June 1994 DESCRIPTION 4 Product specification TDA3857 Fig.2 Pin configuration. ...
Page 5
... AMF2’ (weighted S/N) must be wave modulation of the B/W-signal. Signal-to-noise ratios are measured with kHz deviation and kHz; with a deviation of 30 kHz the mod S/N ratio is deteriorated by 4.5 dB. 5 Product specification TDA3857 kHz sine ...
Page 6
... MHz mV; vision to sound carrier ratios are VC/SC1 = 13 dB and i VC CONDITIONS intercarrier signal reduction at pin 38.9 MHz o Figs 3 and 4 6 Product specification TDA3857 MIN. MAX. UNIT 8 635 mW 25 +150 C 0 +70 ...
Page 7
... LC-circuit at pin 10, 11 1.5 adjusted to minimum video content at pin signal 200 450 only 5.74 MHz channel 0 (RMS 0.84 note 2 75 1.8 7 Product specification TDA3857 TYP. MAX. UNIT 125 8.5 MHz 10 MHz ...
Page 8
... June 1994 CONDITIONS note 3 THD = 1.5% 1 kHz 0.3 CCIR468-3 note 4 minimum output signal maximum output signal out out 3 note 5 see part FM demodulator switching to Mute 8 Product specification TDA3857 MIN. TYP. MAX. UNIT 1 0.5 1 100 kHz ...
Page 9
... R(p- out signal at sync signal with 100% picture modulation Product specification MIN. TYP deviation f specifies the ratio of spurious TR VC TDA3857 MAX. UNIT ...
Page 10
... VC (see Fig.3) S Fig.4 Frequency response of the 38.9 MHz reference circuit. June 1994 ( with optional use of tracking P (because Product specification TDA3857 of the varicaps). ...
Page 11
... Philips Semiconductors Quasi-split sound processor with two FM demodulators APPLICATION INFORMATION June 1994 Fig.5 Internal circuits (continued in Fig.6). 11 Product specification TDA3857 ...
Page 12
... Philips Semiconductors Quasi-split sound processor with two FM demodulators June 1994 Fig.6 Internal circuits (continued from Fig.5). 12 Product specification TDA3857 ...
Page 13
... 1.73 0.53 0.36 26.92 6.40 1.30 0.38 0.23 26.54 6.22 0.068 0.021 0.014 1.060 0.25 0.051 0.015 0.009 1.045 0.24 REFERENCES JEDEC EIAJ SC603 13 Product specification 3.60 8.25 10.0 2.54 7.62 3.05 7.80 8.3 0.14 0.32 0.39 0.10 0.30 0.12 0.31 0.33 EUROPEAN PROJECTION TDA3857 SOT146 ( max. 0.254 2.0 0.01 0.078 ISSUE DATE 92-11-17 95-05-24 ...
Page 14
... If the temperature of the soldering iron bit is less than 300 C it may remain in contact for seconds. If the bit temperature is between 300 and 400 C, contact may seconds. 14 Product specification TDA3857 ). If the stg max ...