LM12L458 datasheet(12/36 Pages) NSC

Part #	LM12L458

Description	12-Bit Sign Data Acquisition System with Self-Calibration

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Manufacturer	NSC [National Semiconductor (TI)]

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Digital Timing Characteristics (Continued)

Typical Performance Characteristics The following curves apply for 12-bit + sign mode after

auto-calibration with V

A+ = VD+ = 3.3V, VREF+ = 2.5V, VREF− = 0V, TA = 25˚C, and fCLK = 6 MHz unless otherwise specified.

The performance for 8-bit + sign and “watchdog” modes is equal to or better than shown. (Note 9)

DS011711-11

FIGURE 7. Simplified Error Curve vs Output Code after Auto-Calibration Cycle

DS011711-12

FIGURE 8. Offset or Zero Error Voltage

Linearity Error Change

vs Clock Frequency

DS011711-34

Linearity Error Change

vs Temperature

DS011711-35

Linearity Error Change

vs Reference Voltage

DS011711-36

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