Voltage regulator designed to power noise-sensitive components

Texas Instruments’ TPS7A87 is a dual, low-noise, LDO voltage regulator capable of sourcing 500mA per channel with only 100mV of maximum dropout. The device provides the flexibility of two independent LDOs and approximately 30% smaller solution size than two single-channel LDOs. Each output is adjustable with external resistors from 0.8V to 5.2V. The wide input-voltage range of the device supports operation as low as 1.4V and up to 6.5V. With one per cent output voltage accuracy and soft-start capabilities to reduce in-rush current, the regulator is ideal for powering sensitive analog low-voltage devices, ADCs, DACs, CMOS sensors, and video ASICs. The device is designed to power noise-sensitive components such as those found in instrumentation, medical, video, professional audio, test and measurement, and high-speed communication applications. The very low 3.8-µVRMS output noise and wideband PSRR minimises phase noise and clock jitter. These features maximise the performance of clocking devices, ADCs and DACs.