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1FEATURES (LM4121-1.2)

2? Small SOT23-5 Package

? Low Voltage Operation

? High Output Voltage Accuracy: 0.2%

? Source and Sink Current Output: ±5 mA

? Supply current: 160 μA Typ.

? Low Temperature Coefficient: 50 ppm/°C

? Enable Pin

? Output Voltages: 1.25V and Adjustable

? Industrial Temperature Range: ?40°C to +85°C

? (For Extended Temperature Range, ?40°C to

125°C, Contact Texas Instruments)

APPLICATIONS

? Portable, Battery Powered Equipment

? Instrumentation and Process Control

? Automotive & Industrial

? Test Equipment

? Data Acquisition Systems

? Precision Regulators

? Battery Chargers

? Base Stations

? Communications

? Medical Equipment

DESCRIPTION

The LM4121 is a precision bandgap voltage reference available in a fixed 1.25V and adjustable

version with up to 5 mA current source and sink

capability.

This series reference operates with input voltages as

low as 1.8V and up to 12V consuming 160 μA (Typ.)

supply current. In power down mode, device current drops to less than 2 μA.

The LM4121 comes in two grades A and Standard.

The best grade devices (A) have an initial accuracy of

0.2%, while the standard have an initial accuracy of

0.5%, both with a tempco of 50ppm/°C ensured from

?40°C to +125°C.

The very low operating voltage, low supply current

and power-down capability of the LM4121 makes this

product an ideal choice for battery powered and

portable applications.

The device performance is ensured over the industrial

temperature range (?40°C to +85°C), while certain

specs are ensured over the extended temperature

range (?40°C to +125°C). Please contact Texas

Instruments for full specifications over the extended

temperature range. The LM4121 is available in a

standard 5-pin SOT-23 package.