onsemi FAB1200UCX
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $94,999.99 | $94,999.99 |
| 15+ | $91,999.99 | $1,379,999.85 |
| 25+ | $89,999.99 | $2,249,999.75 |
| 50+ | $84,999.99 | $4,249,999.50 |
| 100+ | $74,999.99 | $7,499,999.00 |
| N+ | $15,000.00 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | onsemi |
| Product Series | |
| Packaging | | |
| Part Status | Obsolete |
| Type | Class G |
| Output Type | Headphones, 2-Channel (Stereo) |
| Max Output Power x Channels @ Load | 51mW x 2 @ 16Ohm |
| Voltage - Supply | 2.5V ~ 5.5V |
| Features | Differential Inputs, I2C, Short-Circuit and Thermal Protection, Shutdown, Volume Control |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Supplier Device Package | 16-WLCSP (1.71x1.71) |
| Package / Case | 16-UFBGA, WLCSP |
| ROHS |
The FAB1200UCX is a stereo Class G headphone amplifier from Fairchild Semiconductor, optimized for portable audio devices. Operating from 2.5V to 5.5V, it delivers 51mW per channel into 16Ω loads with high efficiency. The ultra-compact 16-WLCSP package (1.71x1.71mm) saves critical board space in smartphones, tablets, and wearables. Its Class G architecture dynamically adjusts voltage rails to minimize power waste, extending battery life in always-on audio applications.
- Ultra-Compact Package: 16-WLCSP (1.71x1.71mm) enables integration into the smallest portable devices.
- High Efficiency: Class G topology reduces power consumption by adapting supply voltage to signal level.
- Low Voltage Operation: Works from 2.5V, compatible with single-cell Li-ion batteries.
- Stereo Output: Dedicated left and right channels for immersive headphone audio.
Smartphone Headphone Amplifier
The FAB1200UCX's ultra-small WLCSP package and low 2.5V operation make it perfect for integrating high-quality stereo headphone amplification into smartphones.
Portable Media Player
With 51mW per channel into 16Ω, it provides ample volume for portable media players while Class G efficiency extends playback time.
Wireless Earbud Charging Case
Its tiny footprint allows embedding in charging cases for audio pass-through, enabling high-fidelity sound from a compact battery source.
Tablet Audio Subsystem
The low supply voltage and stereo output make it ideal for tablets requiring a dedicated headphone driver with minimal board space.
VR Headset Audio
Class G operation reduces power consumption in VR headsets, where battery life is critical, while delivering clear stereo sound.
- Q: What is the output power of the FAB1200UCX?
- A: It delivers 51mW per channel into 16Ω loads, ideal for headphone applications.
- Q: What supply voltage does it require?
- A: It operates from 2.5V to 5.5V, suitable for battery-powered devices.
- Q: What amplifier class does it use?
- A: It is a Class G amplifier, which dynamically adjusts voltage rails for improved efficiency.
- Q: Is it a stereo amplifier?
- A: Yes, it is a 2-channel (stereo) amplifier designed for headphone outputs.
- Q: What package is available?
- A: It comes in a 16-WLCSP (1.71x1.71mm) ultra-compact package for space-constrained designs.
- Q: What is the output power of the FAB1200UCX?
- A: It delivers 51mW per channel into 16Ω loads, ideal for headphone applications.
- Q: What supply voltage does it require?
- A: It operates from 2.5V to 5.5V, suitable for battery-powered devices.
- Q: What amplifier class does it use?
- A: It is a Class G amplifier, which dynamically adjusts voltage rails for improved efficiency.
- Q: Is it a stereo amplifier?
- A: Yes, it is a 2-channel (stereo) amplifier designed for headphone outputs.
- Q: What package is available?
- A: It comes in a 16-WLCSP (1.71x1.71mm) ultra-compact package for space-constrained designs.

FAB1200UCX.pdf