SMM205
Preliminary Information
DC OPERATING CHARACTERISTICS (CONTINUED)
(Over recommended operating conditions, unless otherwise noted. All voltages are relative to GND.)
Symbol
Parameter
1.25VREF Output
Voltage
Notes
Min.
Typ.
Max
Unit
VREF
1.24
1.25
1.26
V
R
LOAD = 2KΩ to GND
External VREF Voltage
VREF_CNTL
0.25
-0.2
-0.5
VDD
+0.2
+0.5
V
%
%
Range
External VREF=1.25V, ±0.1%
ADOC trimmed to internal VREF
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
Active DC Control
sampling period
Update period for Active DC
Control
tDC_CONTROl
1.7
ms
+ 10% change in voltage with
0.1% ripple
Settling Time
100
20
ms
ms
ms
Tsettling
Fast Margin, nom to high,
TRIM_CAP=1µF
TTRIM
Trim Speed
Slow Margin, nom to high,
TRIM_CAP=1µF
200
Summit Microelectronics, Inc
2069 1.4 6/23/03
6