TLC2551 Datasheet, PDF (17/23 Pages) Texas Instruments – 5 V, LOW POWER, 12-BIT, 400 KSPS, SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH AUTOPOWER DOWN

TLC2551, TLC2552, TLC2555
5 V, LOW POWER, 12-BIT, 400 KSPS,
SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH AUTOPOWER DOWN
SLAS276 –MARCH 2000
TYPICAL CHARACTERISTICS
111111111111
See Notes A and B
VFS
111111111110
4095
4094
111111111101
VFS _Nom
4093
100000000001
100000000000
011111111111
VZT =VZS + 1/2 LSB
VFT = VFS – 1/2 LSB
2049
2048
2047
VZS
000000000010
2
000000000001
1
000000000000
0
0.0012 0.0024
2.4564 2.4576 2.4588
0
4.9128 4.9140 4.9152
VI – Analog Input Voltage – V
NOTES: A. This curve is based on the assumption that Vref+ and Vref– have been adjusted so that the voltage at the transition from digital 0 to
1 (VZT) is 0.0006 V, and the transition to full scale (VFT) is 4.9134 V, 1 LSB = 1.2 mV.
B. The full scale value (VFS) is the step whose nominal midstep value has the highest absolute value. The zero-scale value (VZS) is
the step whose nominal midstep value equals zero.
Figure 21. Ideal 12-Bit ADC Conversion Characteristics
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