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TPS7A4700 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS7A4700 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 31 page TPS7A47xx RF LDO Amplifier TPS7A33 Negative-Voltage Regulator Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS7A4700, TPS7A4701 SBVS204F – JUNE 2012 – REVISED SEPTEMBER 2014 TPS7A470x 36-V, 1-A, 4-µVRMS, RF LDO Voltage Regulator 1 Features 3 Description The TPS7A47 is a family of positive voltage (+36 V), 1 • Input Voltage Range: +3 V to +36 V ultralow-noise (4 µVRMS) low-dropout linear regulators • Output Voltage Noise: (LDO) capable of sourcing a 1-A load. 4 µVRMS (10 Hz, 100 kHz) The TPS7A4700 output voltages are user- • Power-Supply Ripple Rejection: programmable (up to 20.5 V) using a printed circuit – 82 dB (100 Hz) board (PCB) layout without the need of external resistors or feed-forward capacitors, thus reducing – ≥ 55 dB (10 Hz, 10 MHz) overall component count. • Two Output Voltage Modes: The TPS7A4701 output voltage can be configured – ANY-OUT™ Version (User-Programmable with a user-programmable PCB layout (up to 20.5 V), Output via PCB Layout): or adjustable (up to 34 V) with external feedback – No External Feedback Resistors or Feed- resistors. Forward Capacitors Required The TPS7A47 is designed with bipolar technology – Output Voltage Range: +1.4 V to +20.5 V primarily for high-accuracy, high-precision – Adjustable Version (TPS7A4701 only): instrumentation applications where clean voltage rails – Output Voltage Range: +1.4 V to +34 V are critical to maximize system performance. This feature makes the device ideal for powering • Output Current: 1 A operational amplifiers, analog-to-digital converters • Dropout Voltage: 307 mV at 1 A (ADCs), digital-to-analog converters (DACs), and • CMOS Logic Level-Compatible Enable Pin other high-performance analog circuitry in critical applications such as medical, radio frequency (RF), • Built-In Fixed Current Limit and and test-and-measurement. Thermal Shutdown • Available in High-Performance Thermal Package: In addition, the TPS7A47 is ideal for post dc-dc converter regulation. By filtering out the output 5-mm × 5-mm QFN voltage ripple inherent to dc-dc switching • Operating Temperature Range: conversions, maximum system performance is –40°C to 125°C ensured in sensitive instrumentation, test-and- measurement, audio, and RF applications. 2 Applications For applications where positive and negative low- • Voltage-Controlled Oscillators (VCO) noise rails are required, consider TI's TPS7A33 family • Frequency Synthesizers of negative high-voltage, ultralow-noise linear regulators. • Test and Measurement • Instrumentation, Medical, and Audio Device Information(1) • RX, TX, and PA Circuitry PART NUMBER PACKAGE BODY SIZE (NOM) • Supply Rails for Operational Amplifiers, TPS7A470x VQFN (20) 5 mm × 5 mm DACs, ADCs, and Other High-Precision Analog (1) For all available packages, see the orderable addendum at Circuitry the end of the datasheet. • Post DC-DC Converter Regulation and Ripple Filtering • Base Stations and Telecom Infrastructure • +12-V and +24-V Industrial Buses 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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