HX7A8101-SQ

The HX7A8101-SQ is an ultra-low-noise voltage regulator (6µVRMS) with a high PSRR and low-dropout (LDO) capability, capable of supplying a current of up to 1A. Its output voltage is adjustable within a range of 0.8V to 6V through external resistors. Additionally, the device boasts a wide input voltage range, spanning from 2.6V to 6.5V. The HX7A8101-SQ is specifically tailored to power noise-sensitive components commonly found in various applications, including high-speed communications, video processing, medical devices, and test and measurement equipment. Its ultra-low output noise and wideband PSRR effectively minimize phase noise and clock jitter in a diverse array of devices, ranging from VCOs, ADCs, and DACs to high-end processors and FPGAs. This ensures optimal performance and reliability in noise-critical The HX7A8101-SQ is an LDO (Low Dropout) regulator that boasts low noise, high PSRR (Power Supply Rejection Ratio), and a maximum dropout voltage of 450mV. It is capable of sourcing a 1A load current and can operate with an input voltage as low as 2.6V, delivering an output voltage of 0.8V. This combination of features makes it an ideal choice for powering a wide range of loads, from noise-sensitive communication components in high-speed applications to high-end microprocessors or field-programmable gate arrays (FPGAs). Additionally, the HX7A8101-SQ incorporates internal protection circuitry, including under-voltage lockout, to prevent the device from turning on until the input voltage is sufficient for accurate regulation. It also features foldback current limiting, which allows the output to source the rated current when the output voltage is regulated but reduces the allowable output current during short-circuit conditions.

Applications

• High Performance Analog: VCO, ADC, DAC, LVDS
• Communication: CPU, ASIC, FPGA, CPLD, DSP
• Noise Sensitive Imaging: CMOC Sensors, Video ASICs
• Instrumentation, Medical, and Audio

Key features

• Input Voltage Range: 2.6V to 6.5V
• Output Voltage Range: 0.8V to 6V
• Low Quiescent Current: 210uA (TYP)
• Ultra-Low Output Noise: 6µVRMS(TYP)
• Output Voltage Noise (100Hz to 100kHz) at 1A Load
• High PSRR: Over 70dB at 1kHz and 40dB at 1MHz
• 2.0% Accuracy Over Line, Load and Temperature
• Low Dropout: 450mV maximum at 1A Load
• Excellent Transient Response
• Thermal Shutdown and Over-Current Protection
• Stable with a 22µF or larger ceramic capacitor
• Operating Junction Temperature: -40°C to +125°C
• Available packages: DFN3x3-8L