SMM105
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
1.25VREF Output Voltage
1.24
1.25
1.26
V
R
LOAD = 2KΩ to GND
External VREF Voltage
Range
VREF_CNTL
0.25
-0.2
-0.5
VDD
+0.2
+0.5
V
%
%
External VREF=1.25V, ±0.1%
ADOC trimmed to internal VREF
±0.1
±0.3
ADOCACC ADOC/Margin Accuracy
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 Active
DC Control
Active DC Control sampling period
tDC_CONTROl
1.7
ms
+ 10% change in voltage
with 0.1% ripple
Settling Time
Trim Speed
100
20
ms
ms
ms
ms
ms
ms
ms
Tsettling
Fast Margin, nom to high,
TRIM_CAP=1µF
TTRIM
Slow Margin, nom to high,
TRIM_CAP=1µF
200
0.2
12.8
25.6
51.2
ADOC/Margining Start
time delay after Start pin is
enabled
Programmable Start Time
Tstart
Summit Microelectronics, Inc
2068 1.8 09/20/05
6
SUMMIT [ SUMMIT MICROELECTRONICS, INC. ]
