Showing posts with label 2x20W. Show all posts
Showing posts with label 2x20W. Show all posts

10/31/2014

Dual BTL 20W Audio Power Amplifier

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Description:
The AN7177 is a monolithic integrated circuit designed for  Dual BTL audio power amplifier suitable for Hi-Fi and car stereo. 
Features:

  •  High output power (20W x 2) 
  •  Incorporating stand-by circuits 
  •  Low shock noise from power ON/OFF switching 
  •  Fewer external components 
  •  Incorporates protection circuits 
  •  Highly stable operation
Circuit Diagram:
Dual BTL 20W Audio Power Amplifier 
Datasheet for AN7177: Download
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10/13/2014

Dual 20 Watt BTL audio amplifier

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General Description:

The AN7198Z is an audio power IC developed for the sound output of car audio (Dual 20 W).A capacitor and a resistor between the output pin and GND to stop oscillation are built-in so that a space saving of set is possible. Also, it is incorporates an industry's first superior muting circuit which is free from shock noise, so that a shock noise design under the set transient condition can be made easily when the muting circuit is used together with its standby function.
Circuit diagram:
Dual 20 Watt BTL audio amplifier

Datasheet for AN7198: Download

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9/30/2014

2 x 20 W BTL amplifiers

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General Description:
The IC incorporates the following functions:
4 × 6 W SE amplifies without SE capacitor, because of the availability of 2 half supply voltage power buffers. 2. 2 × 20 W BTL amplifiers. Automatic switching between 2 and 4 speaker operation. The mode of operation is determined during start-up.
This amplifier is protected for all general short-circuit conditions to battery or ground, overvoltage, 45 V load dump and short-circuits on the speaker outputs. The IC is contained in a 20-pin power HSOP package, but is also available in a 17-pin SIL power package. When packaged in the 20-pin HSOP package additional functions are available:
DDD level selection between 2 and 10% Overrule pin for changing mode of operation (from SE to BTL or from BTL to SE).
Circuit Diagram:
2 x 20 W BTL amplifiers
2 x 20 W BTL amplifiers
Datasheet for TDA8586: Download
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9/12/2014

Two-Channel 20 W BTL Audio Power Amplifier

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Overview:

The LA4628 is a 2-channel general-purpose BTL audio power amplifier provided in a miniature package. It was designed for the best possible audio quality and features an extended low band roll-off frequency provided by a newly-developed NF circuit that does not require an external capacitor. Furthermore, crosstalk, which can cause muddiness in the audio output, has been significantly reduced by both circuit and wiring pattern improvements. Thus this amplifier can provide powerful lows an clear highs. Note that this device is pin compatible with the 13.5 W × 2-channel LA4625, and allows end products differentiated by their power rating to share the same printed circuit board.

Features:
  • Total output: 20 W + 20 W (at VCC = 13.5 V, RL = 4 Ω,THD = 10%)
  • High-fidelity design (fL < 10 Hz, fH = 130 kHz)
  • Extremely low impulse noise levels
  • An arbitrary amplifier startup time can be set up with external components.
  • Full complement of built-in protection circuits (includes circuits that protect against shorting to VCC, shorting to ground, load shorting, overvoltages and excessive temperatures)

Circuit Diagram:
Two-Channel 20 W BTL Audio Power Amplifier

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8/17/2014

2 x 20 W Class D / 1-Bit Audio Power Output Stage

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FEATURES
  • Class D/1-Bit Audio Power Output Stage
  • 5 V Analog and Digital Supply Voltages
  • Power Stage Power Supply 8 V to 20 V
  • Output Power @ 0.1% THD + N
  • Stereo Mode
  • 2 20 W @ 4  @ 14.4 V
  • 2 20 W @ 8  @ 20 V
  • Mono Mode
  • 1 40 W @ 4  @ 20 V
  • RON < 320 m (per Transistor)
  • Efficiency > 85% @ Full Power/8 
  • Clickless Mute Function
  • Turn-On and Turn-Off Pop Suppression
  • Short-Circuit Protection
  • Overtemperature Protection
  • Data Loss Protection
  • 2-Channel BTL Outputs or
  • 4-Channel Single-Ended Outputs
  • 52-Lead Exposed Pad TQFP Package
  • Low Cost DMOS Process

APPLICATIONS:
  • PC Audio Systems
  • Minicomponents
  • Automotive Amplifiers
  • Home Theater Systems
  • Televisions
GENERAL DESCRIPTION:
The AD1991 is a 2-channel BTL or 4-channel single-ended class D audio power output stage. The part is configured during reset to be in either 2-channel mode or 4-channel mode. To protect the IC as well as the connected speakers, the AD1991 provides turn-on and turn-off pop suppression, short-circuit protection, and overtemperature shutdown. To control the IC, a power-down/reset input and a mute pin are available. The output stage can be operated over a power supply range from 8 V to 20 V. In 2-channel mode, Transistors A1, B2, C1, and D2 are turned on by a Logic 1 on inputs INA and INC, and Transistors A2, B1, C2, and D1 are turned on by a Logic 0 on inputs INA and INC. In 4-channel mode, Transistors A1, B1, C1, and D1 are turned on by a Logic 1 on the four inputs, and Transistors A2, B2, C2, and D2 are turned on by a Logic 0 on the four inputs (see the Functional Block Diagrams).

Circuit Diagram:
2 x 20 W Class D / 1-Bit Audio Power Output Stage

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8/04/2014

20+20W STEREO AMPLIFIER WITH STAND-BY

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Circuit diagram TDA7262 20+20W STEREO AMPLIFIER WITH STAND-BY

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