TDA7250 STMicroelectronics Switch (Dual-In-Line Packages) In Stock
The TDA7250 is a dual-channel audio power amplifier driver IC delivering up to 100 W nominal output power with 26 dB gain and 0.1% harmonic distortion, in a 20-pin DIP package for high-fidelity stereo amplifier designs.
- Manufacturer
- STMicroelectronics
- Package
- Dual-In-Line Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- TDA7250 Datasheet PDF
- Category
- Switch
- Temp Range
- -40.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual-channel driver architecture delivering up to 100 W nominal output power per channel, enabling high-power stereo amplifier designs using external output transistors
- 26 dB fixed voltage gain with 0.1% harmonic distortion across a 20 kHz audio bandwidth, ensuring clean, faithful audio reproduction at full power
- 20-pin DIP package with integrated protection and bias circuitry, simplifying external component count in bridge or parallel amplifier topologies
- Compatible with standard bipolar output stage transistors and operating from typical ±25 V to ±50 V split supplies used in home audio and PA systems
Applications
The TDA7250 serves as the driver stage in high-power stereo home amplifiers, mini PA systems, and active speaker designs where external NPN/PNP transistor output stages deliver the final 100 W or greater power. Its integrated bias and protection logic reduces design complexity for audio engineers building bridge-tied or complementary symmetry power stages operating from split supplies up to ±50 V.
Specifications
| YTEOL | 0 |
| Bandwidth-Nom | 20kHz |
| Consumer IC Type | AUDIO AMPLIFIER |
| Gain | 26dB |
| Harmonic Distortion | 0.1% |
| JESD-30 Code | R-PDIP-T20 |
| JESD-609 Code | e3 |
| Number of Channels | 2 |
| Output Power-Nom | 100W |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP20,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 45V |
| Supply Voltage-Min (Vsup) | 10V |
| Surface Mount | NO |
| Technology | BIPOLAR |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | MATTE TIN |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TDA7250:
Frequently Asked Questions
What nominal output power and harmonic distortion does TDA7250 achieve at full signal level?
The TDA7250 delivers a nominal output power of 100 W with harmonic distortion of only 0.1% across the full 20 kHz audio bandwidth. This combination of high power and low distortion makes it suitable as the driver stage in high-fidelity stereo amplifiers where preservation of audio clarity at elevated listening levels is required.
What voltage gain does TDA7250 provide, and how does that set the sensitivity of a power amplifier input stage?
The TDA7250 provides 26 dB of voltage gain, corresponding to a linear voltage ratio of approximately 20:1. For a 1 V RMS preamplifier output, the driver output reaches about 20 V RMS, which is sufficient to drive complementary bipolar output transistors into their full 100 W operating region from a ±50 V split supply without additional gain stages.
What external components and supply voltages are needed to build a complete stereo amplifier around TDA7250?
A complete TDA7250-based stereo amplifier requires a split supply typically ranging from ±25 V to ±50 V, complementary NPN/PNP output transistors rated at the desired current, bias resistors, a few decoupling capacitors of 100 µF or larger at the supply pins, and a bootstrap network. The 20-pin DIP package provides all driver and protection signals needed to bias and protect the output stage.
How does TDA7250 compare to a fully integrated audio power IC when servicing or repairing legacy home audio equipment?
The TDA7250 uses a separate driver-plus-external-transistor topology, which means individual output transistors of equivalent 15 A / 150 W ratings can be replaced without discarding the driver IC—an advantage in service situations. Fully integrated ICs like TDA7294 combine all stages in one package, reducing component count for new designs but making transistor-level repair impossible when the output stage fails.
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About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
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