Digital TV sound demodulator/decoder

 FEATURES
• Sound IF (SIF) input switch
• SIF AGC with 24 dB control range
• Switchable 10 dB SIF input attenuator
• SIF 8-bit Analog-to-Digital Converter (ADC)
• Easy TV standard programming option
• Differential Quadrature Phase Shift Keying (DQPSK) demodulation for different standards, simultaneously with 1-channel FM demodulation
• NICAM decoding (B/G, D/K, I and L standard)
• 2-carrier multi-standard FM demodulation (B/G, D/K and M standard)
• Single carrier high deviation FM mono demodulation mode
• Decoding for three analog multi-channel systems (A2) and satellite sound
• Adaptive de-emphasis for satellite
• Programmable identification (B/G, D/K and M standard) and different identification times
• FM pilot carrier presence detector
• Optional AM demodulation for system L, simultaneously with NICAM
• Monitor selection for FM/AM demodulator outputs and FM and NICAM signals with peak option
• Automatic FM dematrixing option
• Digital crossbar switch
• I2S-bus serial audio output with matrix, level adjustment and mute
• Dual audio Digital-to-Analog Converter (DAC) from digital crossbar switch to analog crossbar switch, bandwidth = 15 kHz
• Automatic Volume Level (AVL) control
• Analog crossbar switch with inputs for mono and stereo
• Output selection of mono, stereo, dual, dual A or dual B
• Additional mono output with automatic select
• 20 kHz bandwidth for analog path
• Standby mode
• Automatic output selection for TV applications.
GENERAL DESCRIPTION
The TDA9874A is a single-chip Digital TV Sound Demodulator/Decoder (DTVSD) for analog and digital multi-channel sound systems in TV/VCR sets and satellite  receivers.
Circuit Diagram:

Digital TV sound demodulator/decoder

Datasheet for TDA9874: Download

TDA9875 Digital TV Sound Processor

GENERAL DESCRIPTION:

The TDA9875 is a single-chip Digital TV Sound Processor (DTVSP) for analog and digital multi-channel sound systems in TV sets and satellite receivers.

Circuit Diagram:

TDA9875 Digital TV Sound Processor

Datasheet for TDA9875: Download

FM sound IF-PLL demodulator

GENERAL DESCRIPTION

The TDA9880(T) is an integrated circuit for multistandard vision IF signal processing and FM demodulation in TV and VTR sets.

Circuit Diagram:

FM sound IF-PLL demodulator

Datasheet for TDA9880: Download

I 2C-bus controlled multistandard alignment-free IF-PLL demodulator with FM radio

FEATURES:

• 5 V supply voltage

• Gain controlled wide-band Vision Intermediate Frequency (VIF) amplifier, AC-coupled

• Multistandard true synchronous demodulation with active carrier regeneration: very linear demodulation, good intermodulation figures, reduced harmonics, and excellent pulse response

• Gated phase detector for L and L-accent standard

• Fully integrated VIF Voltage Controlled Oscillator (VCO), alignment-free, frequencies switchable for all negative and positive modulated standards via I2C-bus

• Digital acquisition help, VIF frequencies of 33.4, 33.9, 38.0, 38.9, 45.75, and 58.75 MHz

• 4 MHz reference frequency input: signal from Phase-Locked Loop (PLL) tuning system or operating as crystal oscillator

• VIF Automatic Gain Control (AGC) detector for gain control, operating as peak sync detector for negative modulated signals and as a peak white detector for positive modulated signals

• VIF-AGC monitor output at pin OP2

• External VIF-AGC setting via pin OP1

• Precise fully digital Automatic Frequency Control (AFC) detector with 4-bit digital-to-analog converter, AFC bits readable via I2C-bus

• TakeOver Point (TOP) adjustable via I2C-bus or alternatively with potentiometer

• Fully integrated sound carrier trap for 4.5, 5.5, 6.0, and 6.5 MHz, controlled by FM-PLL oscillator

• Sound IF (SIF) input for single reference Quasi Split Sound (QSS) mode, PLL controlled

• SIF-AGC for gain controlled SIF amplifier, single reference QSS mixer able to operate in high performance single reference QSS mode and in intercarrier mode, switchable via I2C-bus 

• AM demodulator without extra reference circuit

• Alignment-free selective FM-PLL demodulator with high linearity and low noise

• I2C-bus control for all functions

• I2C-bus transceiver with pin programmable Module Address (MAD)

• Four selectable I2C-bus addresses

• SIF and FM-AGC for radio (optional)

• Radio IF (RIF) input using the sound IF SAW input for converting to 10.7 MHz, input frequencies are 41.3 MHz for NTSC (M/N standard) applications and 33.3 MHz for other applications

• Alignment-free FM radio demodulation at 10.7 MHz

• Radio AFC

• External FM input and demodulation.

GENERAL DESCRIPTION:

The TDA9887 is an alignment-free multistandard (PAL, SECAM and NTSC) vision and sound IF signal PLL demodulator for positive and negative modulation, including sound AM and FM processing. A special function is implemented for the demodulation of FM radio signals (fRIF = 10.7 MHz).

Circuit Diagram:

I 2C-bus controlled multistandard alignment-free IF-PLL demodulator with FM radio

Datasheet for TDA9887: Download

Interference and noise suppression circuit for FM receivers TDA1001B

GENERAL DESCRIPTION:
The TDA1001B is a monolithic integrated circuit for suppressing interference and noise in FM mono and stereo receivers.
Features:
• Active low-pass and high-pass filters
• Interference pulse detector with adjustable and controllable response sensitivity
• Noise detector designed for FM i.f. amplifiers with ratio detectors or quadrature detectors
• Schmitt trigger for generating an interference suppression pulse
• Active pilot tone generation (19 kHz)
• Internal voltage stabilization
Circuit Diagram:

Interference and noise suppression circuit for FM receivers TDA1001B

Datasheet for TDA1001B: Download

5-band stereo equalizer circuit

FEATURES:

• Monolithic integrated 5-band stereo equalizer circuit

• Five filters for each channel

• Centre frequency, bandwidth and maximum boost/cut defined by external components

• Choise for variable or constant Q-factor via I2C software

• Defeat mode

• All stages are DC-coupled

• I2C-bus control for all functions

• Two different modul addresses programmable.

GENERAL DESCRIPTION:

The 5-band stereo equalizer is an 12C-bus controlled tone processor for application in car radio sets, TV sets and music centres. It offers the possibility of sound control as well as equalization of sound pressure behaviour of different rooms or loudspeakers, especially in cars.

Circuit diagram:

5-band stereo equalizer circuit

Datasheet for TEA6360: Download

Integrated Circuit Module Hybrid Audio Output 4.5W for Car Radio & CB

Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Power Supply Voltage, VCC - 18V
Power Dissipation (TC = +75°C), PD - 4.5W
Operating Temperature Range, Topr  −20° to +75°C
Storage Temperature Range, Tstg   −55° to +125°C