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
1.24
1.25
1.26
VREF
VREF Internal Reference
V
VREF=0.5V
0.496 0.500 0.504
MARG
ACC
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
Update period for ADC
Monitor sampling/conversion
conversion and DAC
t
ADC_DAC
1.8
ms
period
update
t
MARG_I/D
Margin single bit increment or
decrement time
T
MARG_UPDATE
= (X)(1.8ms) where:
X=step number of possible 256
and 1 step=5mV
1.8
0
15
ms
µs
µs
µs
µs
ms
ms
ms
ms
t
GLITCH
Programmable glitch filter times
40
120
2.5
5
t
MARGIN
Programmable Margin Delay Times
Note 1 – See Figure 4
10
17.5
Summit Microelectronics, Inc
2075 2.6 05/13/05
6
SUMMIT [ SUMMIT MICROELECTRONICS, INC. ]
