Stereo Audio Amplifier Based on TDA7266D
aliexs1995
Posts: 2
Schematic
Introduction about TDA7266D
Tiny stereo audio amplifier board has been designed around SMD TDA7266D that produced by ST. The TDA7266D is a dual bridge amplifier specially designed for Portable Audio, LCD TV/Monitor, PC Motherboard, and TV applications. This circuit provides high quality audio output of 3W approx. on each channel with standard audio signal input. The circuit works with 3.5V to 5V. Due to low supply input this amplifier is suitable for small size audio gadgets and portable audio applications like MP3 player, Voice messaging system, Warning signals, Annunciator etc.
TDA7266D Datasheet
Specifications
Supply voltage range 3.5 to 5v (maximum supply 5v due to small pcb and small thermal area)
Output power 3+3w@thd = 10%, rl = 8ω, vcc = 3.7v (3w approx.)
Single supply
Minimum external components – no svr capacitor – no bootstrap – no boucherot cells – internally fixed gain
Mute functions (jumper close)
Short circuit protection
Thermal overload protection
Parts List
Photos
Introduction about TDA7266D
Tiny stereo audio amplifier board has been designed around SMD TDA7266D that produced by ST. The TDA7266D is a dual bridge amplifier specially designed for Portable Audio, LCD TV/Monitor, PC Motherboard, and TV applications. This circuit provides high quality audio output of 3W approx. on each channel with standard audio signal input. The circuit works with 3.5V to 5V. Due to low supply input this amplifier is suitable for small size audio gadgets and portable audio applications like MP3 player, Voice messaging system, Warning signals, Annunciator etc.
TDA7266D Datasheet
Specifications
Supply voltage range 3.5 to 5v (maximum supply 5v due to small pcb and small thermal area)
Output power 3+3w@thd = 10%, rl = 8ω, vcc = 3.7v (3w approx.)
Single supply
Minimum external components – no svr capacitor – no bootstrap – no boucherot cells – internally fixed gain
Mute functions (jumper close)
Short circuit protection
Thermal overload protection
Parts List
Photos
Comments
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all righty then...
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Well there it is, if I ever wanted to upgrade the power supply from my Hello Kitty boombox, I have a solution.
HT SYSTEM-
Sony 850c 4k
Pioneer elite vhx 21
Sony 4k BRP
SVS SB-2000
Polk Sig. 20's
Polk FX500 surrounds
Cables-
Acoustic zen Satori speaker cables
Acoustic zen Matrix 2 IC's
Wireworld eclipse 7 ic's
Audio metallurgy ga-o digital cable
Kitchen
Sonos zp90
Grant Fidelity tube dac
B&k 1420
lsi 9's -
What no film caps????
Rookie! -
I installed one of these into my 1968 talking G.I. Joe as the original had some leaking caps. It was a tight fit. Between the bigger size of the new "wardrobe" necessary to accommodate this amp, and the fuzzy G.I. Joe beard, the doll ended up being a dead-ringer for Sebastian Cabot as Mr. French on "Family Affair".Well there it is, if I ever wanted to upgrade the power supply from my Hello Kitty boombox, I have a solution. -
I installed one of these into my 1968 talking G.I. Joe as the original had some leaking caps. It was a tight fit. Between the bigger size of the new "wardrobe" necessary to accommodate this amp, and the fuzzy G.I. Joe beard, the doll ended up being a dead-ringer for Sebastian Cabot as Mr. French on "Family Affair".Well there it is, if I ever wanted to upgrade the power supply from my Hello Kitty boombox, I have a solution.
LOL....only those of age know that one.HT SYSTEM-
Sony 850c 4k
Pioneer elite vhx 21
Sony 4k BRP
SVS SB-2000
Polk Sig. 20's
Polk FX500 surrounds
Cables-
Acoustic zen Satori speaker cables
Acoustic zen Matrix 2 IC's
Wireworld eclipse 7 ic's
Audio metallurgy ga-o digital cable
Kitchen
Sonos zp90
Grant Fidelity tube dac
B&k 1420
lsi 9's -
I dissected a talking GI Joe once. I believe he had suffered a mortal injury on the battlefield
These (ahem) dolls employed a clever analog technology for sound reproduction; basically a mylar strip (like an audio tape, but a little thicker) with a modulated groove cut into it. In essence, an 'endless loop' record.
