LM12454_14 datasheet(18/45 Pages) TI1 | LM12454/LM12458/LM12H458 12-Bit + Sign Data Acquisition System with Self-Calibration

Part No.	LM12454

Description	LM12454/LM12458/LM12H458 12-Bit Sign Data Acquisition System with Self-Calibration

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Manufacturer	TI1 [Texas Instruments]

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LM12454, LM12458, LM12H458

SNAS079A – MAY 2004 – REVISED FEBRUARY 2006

www.ti.com

Typical Performance Characteristics

(1)The following curves apply for 12-bit + sign mode after auto-calibration unless otherwise specified. The performance for 8-

bit + sign and “watchdog” modes is equal to or better than shown.

Linearity Error Change

vs. Clock Frequency

vs. Temperature

Linearity Error Change

vs. Reference Voltage

vs. Supply Voltage

Full-Scale Error Change

vs. Clock Frequency

vs. Temperature

Full-Scale Error Change

Full-Scale Error

vs. Reference Voltage

vs. Supply Voltage

Zero Error Change

vs. Clock Frequency

vs. Temperature

(1)

With the test condition for VREF (VREF+ − VREF−) given as +5V, the 12-bit LSB is 1.22 mV and the 8-bit/“Watchdog” LSB is 19.53 mV.

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