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The TDA7850A is a breakthrough MOSFET technology class AB audio power amplifier in Flexiwatt27 package designed for high power car radio. The fully complementary P-Channel/N-Channel output structure allows a rail to rail output voltage swing which, combined with high output current and minimized saturation losses sets new power references in the car-radio field, with unparalleled distortion performances.
The TDA7850A integrates a DC offset detector.
Key Features
- High output power capability:
- 4 x 50 W/4 Ω max.
- 4 x 30 W/4 Ω @ 14.4 V, 1 kHz, 10 %
- 4 x 80 W/2 Ω max.
- 4 x 55 W/2 Ω @ 14.4 V, 1 kHz, 10 %
- MOSFET output power stage
- Excellent 2 Ω driving capability
- Hi-fi class distortion
- Low output noise
- Standby function
- Mute function
- Automute at min. supply voltage detection
- Low external component count:
- Internally fixed gain (26 dB)
- No external compensation
- No bootstrap capacitors
- On board 0.35 A high side driver
- Protections:
- Output short circuit to GND, to Vs, across the load
- Very inductive loads
- Overrating chip temperature with soft thermal limiter
- Output DC offset detection
- Load dump voltage
- Fortuitous open gnd
- Reversed battery
- ESD
- High output power capability:
Sample & Buy
| Part Number | Marketing Status | Package | Packing Type | ECCN (US) | Country of Origin | Approximate Price (US$)* / Qty | Order from ST | Order from Distributors |
|---|---|---|---|---|---|---|---|---|
| TDA7850A | Active | FLEXIWATT FM2 27 | Tube | EAR99 | CHINA | 8.16 / 1k | Buy now | Check Availability |
| TDA7850AH | Active | FLEXIWATT 27 HB | Tube | EAR99 | CHINA | 8.16 / 1k | Buy now | No availability of distributors reported, please contact our sales office |
(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
Featured Videos
Power amplifier system for automotive applications
Evaluation Tools
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Picture Part number Manufacturer Description 
EVAL-TDA785X ST EVAL-TDA785x evaluation board for STPA001, STPA003, STPA008, TDA7851A, TDA7850A, and TDA7388A Part NumberEVAL-TDA785x evaluation board for STPA001, STPA003, STPA008, TDA7851A, TDA7850A, and TDA7388A
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| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| TDA7850A | Active | FLEXIWATT FM2 27 | Automotive | Ecopack2 | |
| TDA7850AH | Active | FLEXIWATT 27 HB | Automotive | Ecopack2 | |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
