Overview
The TS4990EIJT, 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 and 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 TS4990EIJT is available in a 9-bump flip-chip package.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| VCC (Supply Voltage) | 2.2 | - | 5.5 | V |
| Pout (Output Power) | 0.9 | - | 1.2 | W |
| THD + N (Total Harmonic Distortion + Noise) | 0.2 | - | - | % |
| ISTBY (Standby Current) | 10 | - | 1000 | nA |
| PSRR (Power Supply Rejection Ratio) | - | - | 62 | dB |
| Toper (Operating Temperature Range) | -40 | - | 85 | °C |
| Tj (Maximum Junction Temperature) | - | - | 150 | °C |
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 (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 9-bump flip-chip 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 TS4990EIJT?
The TS4990EIJT 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 TS4990EIJT?
The standby current is less than 10 nA when VSTBY is tied to GND.
- What is the PSRR of the TS4990EIJT at 217 Hz?
The PSRR is 62 dB at 217 Hz in grounded mode.
- What is the total harmonic distortion + noise (THD + N) of the TS4990EIJT?
The THD + N is 0.2% at Pout = 1 Wrms, AV = 2, 20 Hz ≤ F ≤ 20 kHz, RL = 8 Ω.
- What are the available packages for the TS4990EIJT?
The TS4990EIJT is available in a 9-bump flip-chip package, among other options like miniSO-8 and DFN8.
- What is the operating temperature range of the TS4990EIJT?
The operating temperature range is from -40°C to +85°C.
- Does the TS4990EIJT have thermal shutdown protection?
Yes, the TS4990EIJT includes internal thermal shutdown protection.
- What is the gain stability of the TS4990EIJT?
The amplifier is unity gain stable and can be configured by external gain setting resistors.
- How does the standby mode work on the TS4990EIJT?
The standby mode is active when VSTBY is tied to GND, reducing the supply current to less than 10 nA.
- What are some common applications of the TS4990EIJT?
Common applications include mobile phones, laptop and notebook computers, PDAs, and portable audio devices.
