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

2-W Stereo Audio Power Amplifier

DESCRIPTION:

The EUA5202 is a stereo audio power amplifier that delivering 2W of continuous RMS power per channel  into 3-Ω loads. When driving 1W into 8-Ω speakers, the  EUA5202 has less than 0.04% THD+N across its  specified frequency range. Included within this device is 

integrated de-pop circuitry that virtually eliminates  transients that cause noise in the speakers.  Amplifier gain is externally configured by means of two  resistors per input channel and does not require external  compensation for settings of 2 to 20 in BTL mode (1 to  10 in SE mode). An internal input MUX allows two sets  of stereo inputs to the amplifier. In notebook  applications, where internal speakers are driven as BTL  and the line (often headphone drive) outputs are required  to be SE, the EUA5202 automatically switches into SE  mode when the SE/BTL inputs is activated. Consume  only 7mA of supply current during normal operation,  and the EUA5202 also features a shutdown function for  power sensitive applications, holding the supply current  at 1µA. 

FEATURES:

Output Power at 3Ω Load 2W/ch at VDD=5V 800mW/ch at 3V 

Low Supply Current and Shutdown Current 

Integrated Depop Circuit 

Mute and Shutdown Control Function 

Thermal Shutdown Protection 

Stereo Input MUX 

Bridge-Tied Load (BTL) or Single-Ended (SE) Modes. 

TSSOP-24 with Thermal Pad 

Circuit Diagram:

2-W Stereo Audio Power Amplifier 

Datasheet for EUA5202: Download

2-W FILTERLESS STEREO CLASS-D AUDIO POWER AMPLIFIER

Features:

• 2 W Into 3-Ω Speakers (THD+N< 0.4%) < 0.08% THD+N at 1 W, 1 kHz, Into 4-Ω Load
• Extremely Efficient Third Generation 5-V lass-D Technology:
• Low Supply Current (No Filter) . . . 8 mA
• Low Supply Current (Filter) . . . 15 mA
• Low Shutdown Current . . . 1 µA
• Low Noise Floor . . . 56 µVRMS
• Maximum Efficiency Into 3 Ω, 65-70%
• Maximum Efficiency Into 8 Ω, 75-85%
• 4 Internal Gain Settings . . . 8-23.5 dB
• PSRR . . . -77 dB
• Integrated Depop Circuitry

Description:

The TPA2000D2 is the third generation 5-V class-D amplifier from Texas Instruments. Improvements to previous generation devices include: lower supply current, lower noise floor, better efficiency, four different gain settings, smaller packaging, and fewer external components. The most significant advancement with this device is its modulation scheme that allows the amplifier to operate without the output filter. Eliminating the output filter saves

the user approximately 30% in system cost and 75% in PCB area. The TPA2000D2 is a monolithic class-D power IC stereo audio amplifier, using the high switching speed of power MOSFET transistors. These transistors reproduce the analog signal through high-frequency switching of the output stage. The TPA2000D2 is configured as a bridge-tied load (BTL) amplifier capable of delivering greater than 2 W of continuous average power into a 3-Ω load at less than 1% THD+N from a 5-V power supply in the high fidelity range (20 Hz to 20 kHz). With 1 W being delivered to a 4-Ω load at 1 kHz, the typical THD+N is less than 0.08%. A BTL configuration eliminates the need for external coupling capacitors on the output. Low supply current of 8 mA makes the device ideal for battery-powered applications. Protection circuitry increases device reliability: thermal, over-current, and under-voltage shutdown. Efficient class-D modulation enables the TPA2000D2 to operate at full power into 3-Ω loads at an ambient temperature of 85°C.

Circuit Diagram:

2-W FILTERLESS STEREO CLASS-D AUDIO POWER AMPLIFIER

Datasheet for TPA2000D2: Download

Dual Low Noise Preamplifier

Dual Low Noise Preamplifier

DIGITAL CONTROLLED STEREO AUDIO PROCESSOR WITH LOUDNESS

Circuit Diagram:

DIGITAL CONTROLLED STEREO AUDIO PROCESSOR WITH LOUDNESS

Datasheet for TDA7313: Download 

One Chip AM/FM Radio with Audio Power Amplifier

Description:

The integrated circuit TDA1083 includes, with exception of the FM front end, a complete AM-/FM-radio-circuit with audio power amplifier. An internal Z-diode stabilizes the supply voltage at VS 13 V, which allows with the aid of a resistor and a rectifier, the circuit to be driven by a higher external supply voltage.

Features:

• Large supply voltage range VS = 3 to 12 V
• High AM-Sensitivity
• Limiting threshold voltage Vi = 50 V
• Audio output power P0 = 0.7 W
• AFC-connection for VHF-tuner
• AM-FM switching without high frequency voltages

Applications:

• AM-/FM- and audio-amplifier

Circuit Diagram:

Circuit diagram for One Chip AM/FM Radio with Audio Power Amplifier

Datasheet for TDA1083: Download