Overview
The TS4990IQT, produced by STMicroelectronics, is a 1.2 W audio power amplifier designed for demanding audio applications. It is particularly suited for use in mobile phones, laptop/notebook computers, PDAs, and portable audio devices. This amplifier is capable of delivering 1.2 W of continuous RMS output power into an 8 Ω load at 5 V, with a total harmonic distortion (THD) of 1% at 1 kHz. It features an externally controlled standby mode that reduces the supply current to less than 10 nA and includes internal thermal shutdown protection. The TS4990IQT is available in a DFN8 package and is unity-gain stable, allowing configuration by external gain setting resistors.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC) | 2.2 to 5.5 | V |
| Output Power at VCC = 5 V | 1.2 | W |
| THD at 1 kHz, 8 Ω load | 1% | |
| Standby Current | < 10 | nA |
| PSRR at 217 Hz | 62 | dB |
| Total Harmonic Distortion + Noise | 0.1% | |
| Operating Temperature Range | -40 to +85 | °C |
| Storage Temperature Range | -65 to +150 | °C |
| Maximum Junction Temperature | 150 | °C |
| Package Type | DFN8 |
Key Features
- Operating range from VCC = 2.2 V to 5.5 V
- 1.2 W output power at VCC = 5 V, THD = 1%, F = 1 kHz, with 8 Ω load
- Ultra-low consumption in standby mode (less than 10 nA)
- 62 dB PSRR at 217 Hz in grounded mode
- Near-zero pop and click
- Ultra-low distortion (0.1%)
- Unity gain stable
- Available in DFN8 package
- Internal thermal shutdown protection
Applications
- Mobile phones (cellular / cordless)
- Laptop / notebook computers
- PDAs
- Portable audio devices
Q & A
- What is the maximum output power of the TS4990IQT?
The TS4990IQT can deliver up to 1.2 W of continuous RMS output power into an 8 Ω load at 5 V.
- What is the standby current of the TS4990IQT?
The standby current is less than 10 nA when the standby mode is active.
- What is the power supply rejection ratio (PSRR) of the TS4990IQT?
The PSRR is 62 dB at 217 Hz in grounded mode.
- What are the package options available for the TS4990IQT?
The TS4990IQT is available in a DFN8 package.
- What is the operating temperature range of the TS4990IQT?
The operating temperature range is from -40°C to +85°C.
- Does the TS4990IQT have thermal protection?
- How can the gain of the TS4990IQT be configured?
The gain can be configured by external gain setting resistors.
- What is the total harmonic distortion + noise (THD + N) of the TS4990IQT?
The THD + N is 0.1% at 1 W RMS output power, with a gain of 2 and a frequency range of 20 Hz to 20 kHz.
- Is the TS4990IQT RoHS compliant?
- What are some typical applications of the TS4990IQT?
