Part Number: TDA7297
Function: 15+15W DUAL BRIDGE AMPLIFIER
Package: Multiwatt 15 Type
Manufacturer: ST Microelectronics
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Description
The TDA7297 is a Class-AB dual-bridge audio amplifier IC designed for compact audio applications such as televisions, portable radios, DIY speaker systems, and more.
As a Class-AB device, you’re looking at moderate efficiency but strong audio quality for small-scale applications.Sufficient heatsinking needed, especially under higher loads or extended use.
Key Specifications
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Output Power: Delivers up to 15 W per channel into an 8 Ω load (30 W total
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Supply Voltage Range: Operates from 6 V to 18 V (6.5 V to 18 V on some platforms)
- Fixed Gain: Internally set gain of approximately 32 dB
- Protection Features: Includes stand-by/mute control, short-circuit protection, and thermal overload protection
Pinout
OUT1+, OUT1− Channel 1 speaker outputs (bridge configuration)
IN1 Channel 1 audio input
OUT2+, OUT2− Channel 2 speaker outputs
IN2 Channel 2 audio input
VCC (pins 3 & 13) Power supply input
MUTE Mute control pin
STANDBY Stand-by mode control pin
PW-GND, S-GND Power and signal grounds respectively
N.C. No-connect pins
Features
1. WIDE SUPPLY VOLTAGE RANGE (6V -18V)
2. MINIMUM EXTERNAL COMPONENTS
(1) NO SVR CAPACITOR
(2) NO BOOTSTRAP
(3) NO BOUCHEROT CELLS
(4) INTERNALLY FIXED GAIN
3. STAND-BY & MUTE FUNCTIONS
4. SHORT CIRCUIT PROTECTION
5. THERMAL OVERLOAD PROTECTION
Absolute Maximum Ratings
1. Supply Voltage : VS = 20 V
2. Output Peak Current (internally limited) : IO = 2 A
3. Total Power Dissipation (Tcase = 70°C) : Ptot = 33 W
Block Diagram
Power Output Performance
1. At 16.5 V supply: ~15 W + 15 W at 10% THD; ~12 W + 12 W at 1% THD
2. At 12 V supply: ~8 W + 8 W at 10% THD; ~6 W + 6 W at 1% THD
Official Homepage: https://www.st.com/en/audio-ics/tda7297.html
TDA7297 Datasheet
