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Product Detailed Parameters
- Description：IC AMP AB MONO 10W 15MULTIWATT
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Type：Class AB
- Output Type：1-Channel (Mono)
- Max Output Power x Channels @ Load：10W x 1 @ 8Ohm
- Voltage - Supply：11V ~ 35V
- Features：Depop, Mute, Short-Circuit and Thermal Protection, Standby
- Mounting Type：Through Hole
- Supplier Device Package：15-Multiwatt
- Package / Case：Multiwatt-15 (Vertical, Bent and Staggered Leads)
- Operating Temperature：-20°C ~ 85°C (TA)
- Grade：-
- Qualification：-
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Overview
The TDA7494S is a single-channel Class AB power amplifier designed for high-quality sound applications, specifically targeting TV systems. It operates on a single supply voltage ranging from 11V to 35V and delivers up to 10W of output power into an 8Ω load at THD=10% with a 28V supply. The device utilizes Multiwatt 15 packaging and incorporates internally fixed gain, eliminating the need for external Boucherot cells or standby RC input networks. Key electrical characteristics include a quiescent current of 22mA typical, a closed-loop gain of 26dB, and a slew rate of 5V/µs typical.
Feature Summary
- Integrated Stand-by and Mute functions for flexible power management
- Soft clipping capability to minimize audio distortion during overload
- Low turn-on and turn-off pop noise performance
- Built-in short circuit and thermal overload protection mechanisms
Applications
- Television audio systems
- High-fidelity sound equipment
- Single-supply audio amplification circuits
Procurement Notes
Verify component authenticity as this part is marked obsolete by STMicroelectronics. Confirm package integrity and pin alignment against the Multiwatt 15 specifications before integration. Ensure design compatibility with legacy single-supply architectures given the discontinuation status.
Selection Notes
Select this component for designs requiring a robust Class AB solution with integrated protections and mute capabilities. Consider the Multiwatt 15 package dimensions for thermal management and PCB layout constraints. Evaluate the internal fixed gain against system requirements to determine if external attenuation is necessary.
Part Context
This amplifier belongs to STMicroelectronics' discrete power amplifier lineup utilizing Multipower BI50II technology. It is engineered for automotive and consumer electronics environments where reliability under varying supply conditions is critical. The device represents a specialized solution for mono-channel audio amplification in compact form factors.
Replacement Considerations
No direct public substitute part numbers are documented for this obsolete component. Designers should evaluate modern Class D alternatives or consult STMicroelectronics engineering support for updated equivalent recommendations.
FAQ
Does the TDA7494S require an external Boucherot cell?
No, the device is designed to operate without an external Boucherot cell.
What is the maximum supply voltage for the TDA7494S?
The absolute maximum DC supply voltage is 40V, with an operating range up to 35V.
