TDA3845 Datasheet | NXP Semiconductors

INTEGRATED CIRCUITS DATA SHEET TDA3845; TDA3845T Quasi split-sound circuit and AM demodulator Objective specification File under Integrated Circuits, IC02 January 1993 Philips Semiconductors Objective specification Quasi split-sound circuit and AM demodulator Features - Power supply from 5 V (200 m W) to 8 V source also an alternative 12 V source (12 V not for TDA3845T) - Gain controlled wideband IF amplifier (AC coupled with three stages) - High precision internal 90° phase shifter for quadrature demodulator - Amplitude detector for gain control which operates as a peak detector for FM sound and as a mean level detector for AM sound (switchable) - In-phase wideband synchronous demodulator for AM detection TDA3845; TDA3845T - Stabilizer circuit for ripple rejection and constant output signals - ESD protection for all pins - Suitable for all FM standards and L as well as L-accent standard - NICAM patible. GENERAL DESCRIPTION The TDA3845 is a quasi split-sound IF circuit which is designed to provide high performance television FM/AM sound. QUICK REFERENCE DATA SYMBOL VP1 VP2 IP V1-16(RMS) V12-13(RMS) (S +W)/W pin 14 pin 11 (not for TDA3845T) supply current minimum IF input voltage (RMS value) IF control range intercarrier output voltage 5.5 MHz (RMS value) signal-to-weighted-noise ratio (relative to 1 k Hz; 50 k Hz deviation) at 5.5 MHz for 2T/20T at 5.742 MHz for 2T/20T V6-13(RMS) (S +W)/W THD Tamb AF output voltage AM (RMS value) signal-to-weighted-noise ratio; AM mode total harmonic distortion; AM mode operating ambient temperature - - 440 - - 0 60 58 550 56 1 - - - 660 - 2 +70 d B d B m V d B % °C PARAMETER positive supply voltage 4.5 10.8 - - 60 70 5.0 12.0 40 70 63 100 8.8 13.2 - 100 - - V V m A µV d B m V MIN. TYP. MAX. UNIT ORDERING INFORMATION EXTENDED TYPE NUMBER TDA3845 TDA3845T Note 1. SOT38-1; 1996 November 28. 2. SOT109-1; 1996 November 28. PACKAGE PINS 16 16 PIN POSITION DIL SO16 MATERIAL plastic plastic CODE SOT38(1) SOT109A(2) January...