Overview
The TDA7850A is a class AB audio power amplifier developed by STMicroelectronics, utilizing breakthrough MOSFET technology. It is designed for high-power car radio applications and is packaged in the Flexiwatt27 format. The amplifier features a fully complementary P-Channel/N-Channel output structure, allowing for a rail-to-rail output voltage swing. This design combines high output current with minimized saturation losses, setting new power and distortion performance standards in the car-radio field.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Type | Class AB | |
| Output Type | 4-Channel (Quad) | |
| Max Output Power x Channels @ Load | 4 x 50 W @ 4 Ω, 4 x 80 W @ 2 Ω | |
| Voltage - Supply | 8 V ~ 18 V | |
| Operating Temperature | -55°C ~ 150°C (TJ) | |
| Package | 27-Flexiwatt (Formed Leads) | |
| Mounting Type | Through Hole | |
| Power Dissipation | 80 W @ Tcase = 70 °C | |
| Junction Temperature | 150 °C | |
| Storage Temperature | -55 to 150 °C |
Key Features
- High output power capability: 4 x 50 W/4 Ω max, 4 x 80 W/2 Ω max
- MOSFET output power stage
- Excellent 2 Ω driving capability
- Hi-fi class distortion
- Low output noise
- Standby function and Mute function
- Automute at minimum 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
Applications
The TDA7850A is primarily designed for high-power car radio applications. Its features and protections make it suitable for use in automotive audio systems where high power output, low distortion, and robust protection mechanisms are essential.
Q & A
- What is the TDA7850A?
The TDA7850A is a class AB audio power amplifier developed by STMicroelectronics, designed for high-power car radio applications.
- What is the maximum output power of the TDA7850A?
The maximum output power is 4 x 50 W @ 4 Ω and 4 x 80 W @ 2 Ω.
- What is the supply voltage range for the TDA7850A?
The supply voltage range is 8 V to 18 V.
- What are the key features of the TDA7850A?
Key features include high output power capability, MOSFET output power stage, excellent 2 Ω driving capability, hi-fi class distortion, low output noise, and various protection mechanisms.
- What protections does the TDA7850A offer?
The TDA7850A offers protections such as 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, and ESD.
- What is the operating temperature range of the TDA7850A?
The operating temperature range is -55°C to 150°C (TJ).
- What package types are available for the TDA7850A?
The TDA7850A is available in Flexiwatt27 (vertical and horizontal) packages.
- Does the TDA7850A have a standby function?
- What is the quiescent current of the TDA7850A?
The quiescent current is typically 180 mA.
- Is the TDA7850A RoHS compliant?
