Basic Product Information
Part Number: TDA7297
| Field |
Value |
| Manufacturer |
STMicroelectronics |
| Device Type |
TDA7297 – Dual Bridge Class-AB Audio Power Amplifier |
| Package |
Multiwatt 15 (Vertical) |
| Compliance |
RoHS Compliant |
| Grade |
Consumer / Industrial |
Core Electrical Parameters
| Parameter |
Value |
Unit |
| Supply Voltage Range |
6.5 – 18 |
V |
| Output Power (per channel, THD=10%, RL=8Ω) |
15 |
W |
| Total Output Power (stereo) |
30 |
W |
| Quiescent Current |
50 (typ) |
mA |
| THD (Po=1W) |
0.1 (typ) |
% |
| Closed-Loop Voltage Gain |
32 (typ) |
dB |
| Supply Voltage Rejection (SVR) |
56 (typ) |
dB |
| Crosstalk |
60 (typ) |
dB |
| Mute Attenuation |
80 (typ) |
dB |
| Thermal Shutdown Threshold |
150 |
°C |
| Input Resistance |
30 (typ) |
kΩ |
| Operating Temperature Range |
0 to +70 |
°C |
Core Features & Advantages
The TDA7297 delivers a complete dual-channel Class-AB audio amplification solution with minimal external component count and integrated protection circuitry.
- Primary Function: Stereo Class-AB dual bridge audio power amplifier designed for TV and portable radio applications.
- Advantages:
- Minimal External Components: No SVR capacitor, no bootstrap capacitor, and no Boucherot cells required — reduces BOM cost and PCB footprint significantly.
- Internally Fixed Gain (32 dB): Eliminates external gain-setting resistors, ensuring consistent channel matching (ΔGv ≤ 0.5 dB) and simplifying design.
- Comprehensive Protection: Integrated short-circuit protection and thermal overload shutdown at 150°C protect both the IC and connected speakers under fault conditions.
Typical Application Scenarios
- Industry: Consumer Electronics / Audio
- Equipment: Televisions, portable radios, Bluetooth speakers, DIY audio amplifier boards
- Use Cases:
- TV built-in stereo speaker driver delivering 2×15W into 8Ω loads from a single 12-16V supply rail.
- Portable Bluetooth speaker amplifier with standby/mute control for power management and pop-noise suppression during turn-on/off.
- DIY desktop speaker system with simplified circuit requiring only input coupling capacitors and supply decoupling.
Market Reference Price
| Market |
Price Range |
Currency |
| Huaqiangbei Spot |
$0.80 – $1.50 |
USD |
| Overseas B2B |
$1.20 – $2.50 |
USD |
Related Models Comparison
| Model |
Difference |
Application |
| TDA7266 |
Lower power (7W+7W), pin-compatible subset |
Low-power TV and portable audio |
| TDA7294 |
Single channel, higher power (100W), MOSFET output stage |
Hi-Fi and subwoofer amplifiers |
| TPA3116D2 |
Class-D architecture, higher efficiency, digital input |
Battery-powered and compact audio systems |
