Overview
The FSA2275AUMX is a high-performance, Double-Pole Double-Throw (DPDT) analog switch designed by onsemi. It is notable for its negative swing audio capability, making it suitable for high-fidelity audio applications. The device operates over a wide voltage range of 2.5 V to 5.5 V and is fabricated using sub-micron CMOS technology, ensuring fast switching speeds and low distortion.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage Range (VCC) | 2.5 to 5.5 | V |
| On-Resistance (RON) at 2.5 V VCC | 0.5 | Ω (typical) |
| Total Harmonic Distortion + Noise (THD+N) | -105 dB | 2 V RMS, 20 kΩ Load; f = 1 kHz |
| Crosstalk (XTALK) | -134 dB | 1 V RMS, 50 Ω Load; f = 1 kHz |
| Off Isolation | -103 dB | 1 V RMS, 50 Ω Load; f = 1 kHz |
| Package Type | UMLP (Ultra-Mini Leadless Package) | 12-Lead, 1.8 mm x 1.8 mm |
| Maximum Current (ICC) | 1 | µA |
Key Features
- Ultra-low audio RON of 0.5 Ω (typical) at 2.5 V VCC
- Break-before-make operation to prevent signal distortion
- Selectable turn-on ramp time using an external capacitor (CEXT) to minimize pop and click noise
- Power-off protection on common ports
- High-fidelity audio quality suitable for both 32 Ω headphones and line out type loads (>600 Ω)
- Sub-micron CMOS technology for fast switching speeds
Applications
The FSA2275AUMX is versatile and suitable for various audio applications, including:
- High-fidelity audio systems
- Audio switching in consumer electronics
- Professional audio equipment
- Headphone and line-out switching
- General-purpose analog switching where low distortion and fast switching are required
Q & A
- What is the operating voltage range of the FSA2275AUMX?
The operating voltage range is 2.5 V to 5.5 V.
- What is the typical on-resistance (RON) of the FSA2275AUMX at 2.5 V VCC?
The typical on-resistance is 0.5 Ω.
- How does the FSA2275AUMX minimize pop and click noise during operation?
The device allows for the use of an external capacitor (CEXT) to select the turn-on ramp time, thereby minimizing pop and click noise.
- What is the THD+N specification of the FSA2275AUMX?
The THD+N specification is -105 dB at 2 V RMS, 20 kΩ Load; f = 1 kHz.
- What is the package type and size of the FSA2275AUMX?
The package type is UMLP (Ultra-Mini Leadless Package) with a size of 1.8 mm x 1.8 mm.
- Does the FSA2275AUMX have power-off protection?
- What are some common applications of the FSA2275AUMX?
- What technology is used to fabricate the FSA2275AUMX?
- What is the maximum current (ICC) of the FSA2275AUMX?
- What is the crosstalk (XTALK) specification of the FSA2275AUMX?
