SMM150
Preliminary Information
DC OPERATING CHARACTERISTICS (CONTINUED)
(Over recommended operating conditions, unless otherwise noted. All voltages are relative to GND.)
Symbol
Parameter
Notes
Min. Typ. Max Unit
VREF
VREF Internal Reference
VREF=1.25V
VREF=0.5V
1.24 1.25 1.26
0.496 0.500 0.504
V
MARGACC Margin Accuracy
-1.0 ±0.75 +1.0 %
AC OPERATING CHARACTERISTICS
(Over recommended operating conditions, unless otherwise noted. All voltages are relative to GND.)
Symbol
Parameter
Notes
Min. Typ. Max Unit
Monitor sampling/conversion
tADC_DAC period
Update period for ADC
conversion and DAC
update
1.8
ms
tMARG_I/D
Margin single bit increment or
decrement time
TMARG_UPDATE = (X)(1.8ms) where:
X=step number of possible 256
and 1 step=5mV
1.8
ms
0
µs
tGLITCH Programmable glitch filter times
15
µs
40
µs
120
µs
2.5
ms
tMARGIN Programmable Margin Delay Times
Note 1 – See Figure 4
5
ms
10
ms
17.5
ms
Summit Microelectronics, Inc
2075 2.6 05/13/05
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