Overview
The TS488IQT is a pop-free 120 mW stereo headphone amplifier produced by STMicroelectronics. This dual audio power amplifier is designed to drive either a 16 Ω or a 32 Ω stereo headset in single-ended mode. It features pop and click noise protection circuitry, ensuring a smooth audio experience. The amplifier operates within a voltage range of 2.2 V to 5.5 V and includes an externally-controlled standby mode that reduces the supply current to as low as 10 nA. The TS488IQT is known for its high signal-to-noise ratio, high crosstalk immunity, and low current consumption, making it suitable for various audio applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC) | 2.2 to 5.5 | V |
| Output Power (THD+N = 0.1% max., F = 1 kHz, RL = 16 Ω) | 120 mW at 5 V, 55 mW at 3.3 V | mW |
| Supply Current (ICC) at 5 V | 2.7 mA max. | mA |
| Standby Current (ISTBY) | 10 nA typical | nA |
| Signal-to-Noise Ratio (SNR) A-weighted | 102 dB | dB |
| Crosstalk Immunity | 102 dB (F = 1 kHz) | dB |
| Power Supply Rejection Ratio (PSRR) | 70 dB typ. (F = 1 kHz) | dB |
| Operating Temperature Range | -40 to +85 °C | °C |
| Package | DFN8 2x2 mm | - |
Key Features
- Pop and click noise protection circuitry
- Operating range from VCC = 2.2 V to 5.5 V
- Externally-controlled standby mode with ultra-low standby current consumption (10 nA typical)
- High signal-to-noise ratio and high crosstalk immunity
- Unity-gain stable configuration with external gain-setting resistors
- Short-circuit protection circuitry
- Low current consumption and high power efficiency
Applications
- Headphone amplifiers
- Mobile phones and PDAs
- Computer motherboards
- High-end TVs and portable audio players
Q & A
- What is the operating voltage range of the TS488IQT?
The TS488IQT operates within a voltage range of 2.2 V to 5.5 V.
- What is the maximum output power of the TS488IQT at 5 V and 16 Ω load?
The maximum output power is 120 mW at 5 V with a 16 Ω load and 0.1% THD+N.
- How does the standby mode work on the TS488IQT?
The standby mode is externally controlled and reduces the supply current to as low as 10 nA.
- What is the signal-to-noise ratio (SNR) of the TS488IQT?
The SNR is 102 dB A-weighted.
- What is the crosstalk immunity of the TS488IQT?
The crosstalk immunity is 102 dB at 1 kHz.
- What is the power supply rejection ratio (PSRR) of the TS488IQT?
The PSRR is 70 dB typical at 1 kHz.
- What is the operating temperature range of the TS488IQT?
The operating temperature range is -40 to +85 °C.
- What package type is the TS488IQT available in?
The TS488IQT is available in a DFN8 2x2 mm package.
- What are some common applications of the TS488IQT?
Common applications include headphone amplifiers, mobile phones, PDAs, computer motherboards, and high-end TVs.
- Does the TS488IQT have short-circuit protection?
