TDA7335

Features:

*DUAL CHANNEL PROCESSOR FOR PLAYBACK APPLICATIONS.
*STEREODOLBY B NR SYSTEM
*LOWNOISE HEAD PREAMPLIFIER
* MUTE, AUTOREVERSE, AMS (AUDIO MU-
   SIC SENSOR) FUNCTIONS
*INTERNAL SWITCHES FOR EQUALIZATION
*DOLBY REFERENCE LEVEL -6dBm
   (388.2mVRMS)
*MINIMUM NUMBER OF EXTERNAL COMPO-
   NENTS
*LOWSUPPLY CURRENT (18mA)
*MIXED BIPOLAR/CMOSTECHNOLOGY


Pinout




Specifications

Symbo	Parameter	Value	Unit
VS	Supply Voltage	12	V
Ptot	Total Power Dissipation	1	W
Top	Operating Temperature Range	-40 to 85	°C
Tstg	Storage Temperature Range	-40 to 150	°C

Description

The TDA7335 is a monolithic BICmos IC de- signed for use in stereo cassette player systems.

The TDA7335 includes two separate audio channels composed by low noise preamplifier, Dolby B noise reduction systemand Audio Music Sensor.

The dual preamplifier contains mute, autoreverse, metal/normal facilities for amplification of low level signal in applications requiring very low noise performances.

Each channel consists of two cascaded operational amplifiers.

The first one, AMP1, has a fixed gain of 36dB, low noise forward/reverse switchable input, and allows magnetic heads connection directly to ground. The second one, AMP2, is a standard operational amplifier whose equalizing external components fix the frequency response.

The TDA7335 detects the interprogram space and then the starting point of musical programs (the interprogram time and program detectiontime are externally selectable).

The TDA7335 contains Dolby B decoder NR chains requiring very few external components and do not require coils.