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Analog Devices Inc. ADP7118 / ADP7142 CMOS LDO 线性调节器

亚德诺半导体 ADP7118 CMOS 低压差（LDO）线性调节器，在 2.7V 到 20V 的电压范围内运行，输出电流可达 200mA 。这款高输入电压 LDO 适用于调节 20V 至 1.2V 供电轨的高性能模拟和混合信号电路。ADP7142 在 2.7V 到 40V 的电压范围内运行，输出电流可达 200mA 。这款高输入电压 LDO 适用于调节 40V 至 1.2V 供电轨的高性能模拟和混合信号电路。ADI ADP7118 和 ADP7142 设备采用一种先进的专有架构，具有高电源抑制、低噪音的特点，采用一个小型 2.2μF 的陶瓷输出电容器达到出色的线路和负载瞬态响应。对于 5V 或 5V 以下的固定选项而言，调节器输出噪声为 11μV rms，并与输出电压无关。

ADI ADP7118/ADP7142 evaluation boards are used to demonstrate the functionality of the ADP7118/ADP7142 series of linear regulators. Simple device measurements such as line and load regulation, dropout, and ground current can be demonstrated with just a single voltage source, a voltmeter, an ammeter, and load resistors.

特性

  • ADP7142
    • Low Noise: 11μVRMS independent of fixed output voltage
    • PSRR of 88dB @ 10KHz, 68dB @ 100KHz, 50dB @ 1MHz, VOUT ≤5V, VIN = 7V
    • Input voltage range: 2.7V to 40V input voltage range
    • Maximum output current: 200mA
    • Initial accuracy: ±0.8%
    • Accuracy over line, load, and temperature
    • ±1.1%, TJ = −40°C to +85°C
    • ±1.8%, TJ = −40°C to +125°C
    • Low dropout voltage: 200mV @ 200mA load, VOUT = 5V
    • User programmable soft start (LFCSP and SOIC only)
    • Low quiescent current, IGND = 50μA with no load
    • Low shutdown current: 1.8μA @ VIN = 5V, 3.0μA @ VIN = 40V
    • Stable with small 2.2μF ceramic output capacitor
  • ADP7118
    • Low Noise: 11μVRMS independent of fixed output voltage
    • PSRR of 88dB @ 10KHz, 68dB @ 100KHz, 50dB @ 1MHz, VOUT ≤5V, VIN = 7V
    • Input voltage range: 2.7V to 20V
    • Maximum output current: 200mA
    • Initial accuracy: ±0.8%
    • Accuracy over line, load, and temperature
    • ±1.1%, TJ = −40°C to +85°C
    • ±1.8%, TJ = −40°C to +125°C
    • Low dropout voltage: 200mV @ 200mA load, VOUT = 5V
    • User programmable soft start (LFCSP and SOIC only)
    • Low quiescent current, IGND = 50μA with no load
    • Low shutdown current: 1.8μA @ VIN = 5 V, 3.0μA @ VIN = 20V
    • Stable with small 2.2μF ceramic output capacitor

应用

  • ADP7142
    • Regulation to noise-sensitive applications
    • ADC, DAC circuits, precision amplifiers, power for VCO Vtune control
    • Communications and infrastructure
    • Medical and healthcare
    • Industrial and instrumentation
  • ADP7118
    • Regulation to noise-sensitive applications
    • ADC, DAC circuits, precision amplifiers, power for VCO Vtune control
    • Communications and infrastructure
    • Medical and healthcare
    • Industrial and instrumentation

Block Diagram

框图 - Analog Devices Inc. ADP7118 / ADP7142 CMOS LDO 线性调节器

Additional Resource

Evaluation Boards

发布日期: 2015-01-20 | 更新日期: 2025-09-30