MAX853
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MAX853

Low-Noise, Regulated, Negative Charge Pump Power Supplies for GaAsFET Bias

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1mVP-P Output Voltage Ripple (MAX853)

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1ku List Price Starting From $2.25
Features
  • Fixed -4.1V or Adjustable -0.5V to -9V Output at 5mA
  • 4.5V to 10V Input Voltage Range
  • 2mVP-P Output Voltage Ripple (MAX850-MAX852)
  • 1mVP-P Output Voltage Ripple (MAX853)
  • 100kHz Charge-Pump Switching Frequency (MAX850/MAX851/MAX853)
  • External Synchronizing Clock Input (MAX852)
  • Logic-Level Shutdown Mode: 1µA Max Over Temperature (MAX850/MAX852/MAX853)
  • Low Cost, 8-Pin SO Package
Additional Details
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The MAX850-MAX853 low-noise, inverting, charge-pump power supplies are ideal for biasing GaAsFETs in cellular telephone transmitter amplifiers.

The MAX850-MAX852 offer both preset (-4.1V) and adjustable (-0.5V to -9.0V) output voltages. The MAX853 uses an external positive control voltage to set the negative output voltage. Input voltage range for all four devices is 4.5V to 10V. Output current is 5mA.

An internal linear regulator reduces the output voltage ripple to 2mVP-P. With a well-filtered control voltage (VCTRL), the MAX853 achieves typical output ripple of less than 1mVP-P. Supply current is 3mA max, and shutdown current is less than 1µA max over temperature (5µA max for MAX851).

Applications

  • Cell Phones
  • Continuously Adjustable GaAsFET Bias
  • LCD-Bias Contrast Control
  • Negative Regulated Power Supplies
  • Personal Communicators, PDAs
  • Wireless Data Loggers
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Part Models 3
1ku List Price Starting From $2.25
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MAX853

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UPDATED 04/01/1996
English

MAX850-MAX853: Low-Noise, Regulated, Negative Charge Pump Power Supplies for GaAsFET Bias Data Sheet (Rev.2)

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UPDATED 01/01/1900
Chinese

1205: 低噪声、稳压型、负输出电荷泵，用于GaAsFET偏置电源 Data Sheet

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UPDATED 04/01/1996
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MAX850-MAX853_jp: 低ノイズ、安定化、GaAsFETバイアス用、チャージポンプ負電源 Data Sheet (Rev.2)

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Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

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MAX853ISA+ Small-Outline IC, Narrow (0.15in) external-link
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Regulated Inverting Charge Pumps1
MAX881R
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PRODUCTION

Low-Noise Bias Supply in µMAX with Power OK for GaAsFET PA

Evaluation Kits 1

MAX850EVKIT

Evaluation Kit for the MAX850, MAX851, MAX852, MAX853

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MAX850EVKIT

Evaluation Kit for the MAX850, MAX851, MAX852, MAX853

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MAX850EVKIT
Evaluation Kit for the MAX850, MAX851, MAX852, MAX853

Features and Benefits

  • 4.5V to 10V Input Range
  • -4.1V Regulated Output
  • Less than 2mVp-p Output Voltage Ripple
  • 5mA Output Current
  • Surface-Mount Technology
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Product Detail

The MAX850-MAX853 ICs are inverting, charge-pump DC-DC converters with low-noise, regulated outputs. Their low output ripple voltage makes these devices ideal for biasing the GaAs FETs commonly found in cellular telephone transmitters.

The MAX850 evaluation kit (EV kit) is a fully assembled and tested surface-mount board. The board is shipped with a MAX850 mounted, but it can be replaced by the MAX851, MAX852, or MAX853. Provisions are made for mounting two additional resistors, which are required for output voltages other than -4.1V. A special scope-probe socket is also mounted on the board, so output noise can be observed on an oscilloscope.

Applications

  • Cell Phones
  • Continuously Adjustable GaAsFET Bias
  • LCD-Bias Contrast Control
  • Negative Regulated Power Supplies
  • Personal Communicators, PDAs
  • Wireless Data Loggers

Evaluation Kits1

MAX850EVKIT

Evaluation Kit for the MAX850, MAX851, MAX852, MAX853

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