AmplifierCircuits

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

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

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 Datasheet for TDA8586: Download

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 wi...

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  pr...

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