超低噪声， 200毫安线性稳压器 Ultralow Noise, 200 mA Linear Regulator
Product Details
The ADM7160 is an ultralow noise, low dropout linear regulator that operates from 2.2 V to 5.5 V and provides up to 200 mA of output current. The low 150 mV dropout voltage at 200 mA load improves efficiency and allows operation over a wide input voltage range.
Using an innovative circuit topology, the ADM7160 achieves ultralow noise performance without the need for a bypass capacitor, making it ideal for noise-sensitive analog front end and RF applications. The ADM7160 also achieves ultralow noise performance without compromising PSRR or transient line and load performance.
Current-limit and thermal overload protection circuits prevent damage under adverse conditions. The ADM7160 also includes an internal pull-down resistor on the EN input.
The ADM7160 is specifically designed for stable operation with tiny 1 μF, ±30% ceramic input and output capacitors to meet the requirements of high performance, space constrained applications.
The ADM7160 is available in tiny 5-lead TSOT and 6-lead LFCSP packages with 16 fixed output voltage options, ranging from 1.1 V to 3.3 V. The LFCSP offers a very compact solution that provides excellent thermal performance for applications that require up to 200 mA of output current in a small, low profile footprint.
**APPLICATIONS**
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- ADC/DAC power supplies
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- RF, VCO, and PLL power supplies
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- Post dc-to-dc regulation
### Features and Benefits
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- PSRR performance of 54 dB at 100 kHz
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- Ultralow noise independent of VOUT
3 μV rms, 0.1 Hz to 10 Hz
9.5 μV rms, 0.1 Hz to 100 kHz
9 µV rms, 10Hz to 100KHz
17 µV rms, 10Hz to 1MHz
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- Low dropout voltage:
150 mV at 200 mA load
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- Maximum output current: 200 mA
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- Input voltage range: 2.2 V to 5.5 V
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- Low quiescent and shutdown current
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- Initial accuracy: ±1%
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- Accuracy over line, load, and temperature: −2.5%/+1.5%
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- 5-lead TSOT package and
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- 6-lead LFCSP package
