MCF51QH128 View Datasheet(PDF) - Freescale Semiconductor
Part Name
Description
MFG CO.
'MCF51QH128' PDF : 68 Pages View PDF
12-bit DAC electrical characteristics
Table 29. VREF full-range operating behaviors (continued)
Symbol
Vout
Vstep
Vdrift
Ac
Ibg
Itr
ΔVLOAD
Description
Voltage reference output — user trim
Voltage reference trim step
Temperature drift (Vmax -Vmin across the full
temperature range)
Aging coefficient
Bandgap only (MODE_LV = 00) current
Tight-regulation buffer (MODE_LV =10) current
Load regulation (MODE_LV = 10)
• current = + 1.0 mA
• current = - 1.0 mA
Min.
1.198
—
—
—
—
—
—
—
Typ.
—
0.5
—
—
—
—
—
—
Max.
1.202
—
40
TBD
TBD
1.1
TBD
TBD
Unit
V
mV
mV
ppm/year
µA
mA
mV
Notes
See
Figure 16
1
Tstup
DC
Buffer startup time
Line regulation (power supply rejection)
—
—
100
µs
—
—
TBD
mV
–60
—
TBD
dB
1. Load regulation voltage is the difference between the VREF_OUT voltage with no load vs. voltage with defined load
Table 30. VREF limited-range operating requirements
Symbol
TA
Description
Temperature
Min.
0
Max.
50
Unit
Notes
°C
Table 31. VREF limited-range operating behaviors
Symbol
Vout
Description
Voltage reference output with factory trim
Min.
Max.
Unit
TBD
TBD
V
Notes
TBD
Figure 16. Typical output vs.temperature
TBD
Figure 17. Typical output vs. VDD
6.7 Timers
See General Switching Specifications.
MCF51QH128 Advance Information Data Sheet, Rev. 0, 05/2011.
Freescale Semiconductor, Inc.
Preliminary
45
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