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=1.25V
VREF=0.5V
1.24
1.25
1.26
VREF
VREF Internal Reference
V
0.496 0.500 0.504
MARGACC Margin Accuracy
-1.0
+1.0
%
±0.75
AC OPERATING CHARACTERISTICS
(Over recommended operating conditions, unless otherwise noted. All voltages are relative to GND.)
Symbol
Parameter
Notes
Update period for ADC
conversion and DAC
update
Min.
Typ.
Max
Unit
Monitor sampling/conversion
period
tADC_DAC
1.8
ms
TMARG_UPDATE = (X)(1.8ms) where:
Margin single bit increment or
decrement time
tMARG_I/D
1.8
0
ms
X=step number of possible 256
and 1 step=5mV
µs
µs
µs
µs
15
Programmable glitch filter times
tGLITCH
40
120
2.5
5
ms
ms
ms
ms
Programmable Margin Delay Times
tMARGIN
Note 1 – See Figure 4
10
17.5
Summit Microelectronics, Inc
2075 2.6 05/13/05
6
SUMMIT [ SUMMIT MICROELECTRONICS, INC. ]
