Datasheet

PRE POST
6
HYST
NOM
V V
V 10 (ppm)
V
æ ö
-
= ×
ç ÷
ç ÷
è ø
500mV/div
Time(200 s/div)m
V
IN
V
OUT
10mV/div
200 s/divm
V
OUT
-1mA
+1mA
-1mA
I
LOAD
20mV/div
500mV/div
Time(400 s/div)m
V
IN
V
OUT
10mV/div
200 s/divm
V
OUT
-5mA
+5mA
-5mA
I
LOAD
50mV/div
REF3312 , REF3318 , REF3320 , REF3325 , REF3330 , REF3333
www.ti.com SBOS392D –AUGUST 2007–REVISED JUNE 2014
Typical Characteristics (continued)
At T
A
= 25°C and V
IN
= 5 V, and REF3325 used for typical characteristic measurements (unless otherwise noted).
C
LOAD
= 10 μF, I
OUT
= 0 mA C
L
= 1 μF, ±5-mA Output Pulse
Figure 13. Line Transient Figure 14. Load Transient
C
LOAD
= 10 μF, I
OUT
= 1 mA C
L
= 1 μF, ±1-mA Output Pulse
Figure 15. Line Transient Figure 16. Load Transient
8 Parameter Measurement Information
8.1 Thermal Hysteresis
Thermal hysteresis for the REF33xx is defined as the change in output voltage after operating the device at
25°C, cycling the device through the specified temperature range, and returning to 25 ° C. It can be expressed as
Equation 1:
where
• V
HYST
= thermal hysteresis (in units of ppm).
• V
NOM
= the specified output voltage.
• V
PRE
= output voltage measured at 25°C pretemperature cycling.
• V
POST
= output voltage measured after the device cycles from 25°C through the specified temperature range of
–40°C to 125°C and returns to 25°C. (1)
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Product Folder Links: REF3312 REF3318 REF3320 REF3325 REF3330 REF3333