Analog Devices AN-375 ADM2xxL Family Application Note


Analog Devices AN-375 ADM2xxL Family Application Note - cover page
Brand
Analog Devices
Document type
Application Note
Language
English
Pages
6
File format
PDF
File size
351 KB
Published
02 August, 2012
Updated
22 August, 2012
MD5 checksum
07D93092C10E5965EDF8A0A2BD052948

About this manual

The document introduces the ADM2xxL family (ADM230L-ADM241L) as an improved replacement for older RS-232 drivers. It highlights key improvements such as operation from a single +5 V power supply, lower power consumption, and higher baud rates compared to previous generations requiring multiple supplies.

What's inside

  • Charge Pump Operation
  • Voltage Doubler Schematic
  • Voltage Inverter Schematic
  • Transmitter Outputs
  • Slew Rate Control
  • Latch-Up Immunity
  • Overvoltage Protection

Specifications

Power Supply RequirementSingle +5 V power supply
Output Voltage Levels+10 V and -10 V internally generated
Slew Rate LimitLess than 30V/ps

Frequently asked questions

What is the main advantage of the ADM2xxL family over older RS-232 drivers?

The ADM2xxL family operates from a single +5 V power supply, whereas older generations required three separate supplies (+5 V, +12 V and —12 V).

How does the device generate the necessary voltage levels for RS-232?

It uses an on-chip charge pump voltage converter to double and invert the input +5 V supply.

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