3
LT1236
E
LECTR
IC
AL C CHARA TERIST
ICS
V
IN
= 10V, I
OUT
= 0, T
A
= 25°C, unless otherwise noted.
LT1236-10
PARAMETER CONDITIONS MIN TYP MAX UNITS
Output Voltage (Note 1) LT1236A-10 9.995 10.000 10.005 V
LT1236B-10/LT1236C-10 9.990 10.000 10.010 V
Output Voltage Temperature Coefficient (Note 2) T
MIN
≤ T
J
≤ T
MAX
LT1236A-10 2 5 ppm/°C
LT1236B-10 5 10 ppm/°C
LT1236C-10 10 15 ppm/°C
Line Regulation (Note 3) 11.5V ≤ V
IN
≤ 14.5V 1.0 4 ppm/V
● 6 ppm/V
14.5V ≤ V
IN
≤ 40V 0.5 2 ppm/V
● 4 ppm/V
Load Regulation (Sourcing Current) 0 ≤ I
OUT
≤ 10mA 12 25 ppm/mA
(Note 3)
● 40 ppm/mA
Load Regulation (Shunt Mode) 1.7mA ≤ I
SHUNT
≤ 10mA 50 100 ppm/mA
(Notes 3, 4)
● 150 ppm/mA
Series Mode Supply Current 1.2 1.7 mA
● 2.0 mA
Shunt Mode Minimum Current V
IN
is Open 1.1 1.5 mA
● 1.7 mA
Output Voltage Noise (Note 5) 0.1Hz ≤ f ≤ 10Hz 6.0 µV
P-P
10Hz ≤ f ≤ 1kHz 3.5 6 µV
RMS
Long-Term Stablility of Output Voltage (Note 6) ∆t = 1000Hrs Non-Cumulative 30 ppm
Temperature Hysteresis of Output (Note 7) ∆T = ±25°C 5 ppm
V
IN
= 15V, I
OUT
= 0, T
A
= 25°C, unless otherwise noted.
Note 5: RMS noise is measured with a 2-pole highpass filter at 10Hz and a
2-pole lowpass filter at 1kHz. The resulting output is full-wave rectified and
then integrated for a fixed period, making the final reading an average as
opposed to RMS. Correction factors are used to convert from average to
RMS, and 0.88 is used to correct for the non-ideal bandbass of the filters.
Peak-to-peak noise is measured with a single highpass filter at 0.1Hz and a
2-pole lowpass filter at 10Hz. The unit is enclosed in a still-air environment
to eliminate thermocouple effects on the leads. Test time is 10 seconds.
Note 6: Long-term stability typically has a logarithmic characteristic and
therefore, changes after 1000 hours tend to be much smaller than before
that time. Total drift in the second thousand hours is normally less than
one third that of the first thousand hours, with a continuing trend toward
reduced drift with time. Significant improvement in long-term drift can be
The
● denotes specifications which apply over the specified temperature
range.
Note 1: Output voltage is measured immediately after turn-on. Changes
due to chip warm-up are typically less than 0.005%.
Note 2: Temperature coefficient is measured by dividing the change in
output voltage over the temperature range by the change in temperature.
Incremental slope is also measured at 25°C.
Note 3: Line and load regulation are measured on a pulse basis. Output
changes due to die temperature change must be taken into account
separately.
Note 4: Shunt mode regulation is measured with the input open. With the
input connected, shunt mode current can be reduced to 0mA. Load
regulation will remain the same.
LT1236-5
PARAMETER CONDITIONS MIN TYP MAX UNITS
Load Regulation (Sinking Current) 0 ≤ I
OUT
≤ 10mA 60 100 ppm/mA
(Note 3)
● 150 ppm/mA
Supply Current 0.8 1.2 mA
● 1.5 mA
Output Voltage Noise 0.1Hz ≤ f ≤ 10Hz 3.0 µV
P-P
(Note 5) 10Hz ≤ f ≤ 1kHz 2.2 3.5 µV
RMS
Long-Term Stability of Output Voltage (Note 6) ∆t = 1000Hrs Non-Cumulative 20 ppm
Temperature Hysteresis of Output (Note 7) ∆T = ±25°C 10 ppm
