Overview
The TS488IST, produced by STMicroelectronics, is a dual audio power amplifier designed to drive stereo headsets efficiently. This amplifier is notable for its pop and click noise protection circuitry, ensuring a smooth audio experience. It operates within a voltage range of 2.2 V to 5.5 V, making it versatile for various applications. The TS488IST features a standby mode with ultra-low current consumption, reducing power usage when not in active use. It is available in a DFN8 2x2 mm package, making it suitable for compact designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC) | 2.2 to 5.5 | V |
| Output Power (THD+N = 0.1%, 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 Channel Separation | -102 dB | 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 to ensure smooth audio transitions.
- Operating range from VCC = 2.2 V to 5.5 V, making it suitable for a variety of power supply conditions.
- Standby mode with ultra-low current consumption (10 nA typical) to minimize power usage when not in use.
- High signal-to-noise ratio (SNR) of 102 dB A-weighted for clear audio quality.
- High crosstalk immunity of -102 dB to reduce interference between channels.
- Unity-gain stable configuration with external gain-setting resistors.
- Short-circuit protection circuitry to prevent damage from output short-circuits.
Applications
- Headphone amplifiers in portable audio devices.
- Mobile phones and PDAs for enhanced audio output.
- Computer motherboards to drive stereo headsets.
- High-end TVs and portable audio players for improved audio quality.
Q & A
- What is the operating voltage range of the TS488IST?
The TS488IST operates within a voltage range of 2.2 V to 5.5 V.
- What is the maximum output power of the TS488IST at 5 V and 16 Ω load?
The maximum output power is 120 mW at 5 V into a 16 Ω load with 0.1% THD+N.
- How much current does the TS488IST consume in standby mode?
The standby current is typically 10 nA.
- What is the signal-to-noise ratio (SNR) of the TS488IST?
The SNR is 102 dB A-weighted.
- Does the TS488IST have built-in protection against short-circuits?
- What is the package type and size of the TS488IST?
The TS488IST is available in a DFN8 2x2 mm package.
- What are some common applications of the TS488IST?
Common applications include headphone amplifiers, mobile phones, PDAs, computer motherboards, high-end TVs, and portable audio players.
- How does the TS488IST protect against pop and click noise?
The TS488IST includes pop and click noise protection circuitry to ensure smooth audio transitions.
- What is the thermal resistance junction-to-ambient of the TS488IST?
The thermal resistance junction-to-ambient is 40 °C/W when mounted on a 4-layer PCB.
- What is the wake-up time of the TS488IST from standby mode?
The wake-up time is 100 ms.
