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LP5907 Datasheet(PDF) 11 Page - Texas Instruments |
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LP5907 Datasheet(HTML) 11 Page - Texas Instruments |
11 / 36 page IN VBG 1.20V EN + EN EN GND POR + OUT 1 M VIH RF CF + EN EN RAD Copyright © 2016, Texas Instruments Incorporated 11 LP5907 www.ti.com SNVS798J – APRIL 2012 – REVISED MARCH 2016 Product Folder Links: LP5907 Submit Documentation Feedback Copyright © 2012–2016, Texas Instruments Incorporated 7 Detailed Description 7.1 Overview Designed to meet the needs of sensitive RF and analog circuits, the LP5907 provides low noise, high PSRR, low quiescent current, as well as low line and load transient response figures. Using new innovative design techniques, the LP5907 offers class leading noise performance without the need for a separate noise filter capacitor. The LP5907 is designed to perform with a single 1-µF input capacitor and a single 1-µF ceramic output capacitor. With a reasonable PCB layout, the single 1-µF ceramic output capacitor can be placed up to 10 cm away from the LP5907 device. 7.2 Functional Block Diagram 7.3 Feature Description 7.3.1 Enable (EN) The LP5907 EN pin is internally held low by a 1-M Ω resistor to GND. The EN pin voltage must be higher than the VIH threshold to ensure that the device is fully enabled under all operating conditions. The EN pin voltage must be lower than the VIL threshold to ensure that the device is fully disabled and the automatic output discharge is activated. 7.3.2 Low Output Noise Any internal noise at the LP5907 reference voltage is reduced by a first order low-pass RC filter before it is passed to the output buffer stage. The low-pass RC filter has a –3 dB cut-off frequency of approximately 0.1 Hz. |
Similar Part No. - LP5907_16 |
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Similar Description - LP5907_16 |
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