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LH0070-2H

P1-P3P4-P6P7-P9P10-P12
1
LT1031/LH0070
1031fb
■
Pin Compatible with LH0070 and AD581*
■
Ultralow Drift—5ppm/°C Max Slope
■
Trimmed Output Voltage
■
Operates in Series or Shunt Mode
■
Output Sinks and Sources in Series Mode
■
Very Low Noise < 1ppm
P-P
0.1Hz to 10Hz
■
> 100dB Ripple Rejection
■
Minimum Input Voltage of 11V
The LT
®
1031 is a precision 10V reference with ultralow
drift and noise, extremely good long term stability, and
almost total immunity to input voltage variations. The
reference output will both source and sink up to 10mA and
can be used as a shunt regulator (two terminal Zener) with
the same precision characteristics as the three terminal
connection. Special care has been taken to minimize
thermal regulation effects and temperature induced
hysteresis.
The LT1031 reference is based on a buried Zener diode
structure which eliminates noise and stability problems
associated with surface breakdown devices. Further, a
subsurface Zener exhibits better temperature drift and
time stability than even the best band-gap references.
Unique circuit design makes the LT1031 the first three
terminal IC reference to offer ultralow drift without the
use of high power on-chip heaters. Output voltage is
pretrimmed to 0.05% accuracy.
The LT1031 can be used as a plug-in replacement for
the AD581 and LH0070,* with improved electrical and
thermal performance.
■
A-to-D and D-to-A Converters
■
Precision Regulators
■
Digital Voltmeters
■
lnertial Navigation Systems
■
Precision Scales
■
Portable Reference Standard
Basic Positive and
Negative Connections
Precision 10V Reference
Distribution of Output Accuracy
FEATURES
APPLICATIO S
U
DESCRIPTIO
U
V
OUT
I
LOAD
+ 1.5mA
–V
OUT
–V
IN
V
IN
–V
OUT
V
IN
LT1031 LT1031
IN
OUT
R1 = R1
OUT
GND
GND
LT1031 • TA01
OUTPUT ACCURACY (%)
–0.10
PERCENT OF UNITS (%)
15
20
25
0
0.06
LT1031 TA02
10
5
0
–0.06 –0.02 0.02
30
35
40
0.10
T
A
= 25°C
DISTRIBUTION
FROM 5 RUNS
TYPICAL APPLICATIO
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
*See LH0070 Electrical Characteristics table and AD581 cross reference guide.
2
LT1031/LH0070
1031fb
Input Voltage ........................................................... 40V
Input-Output Voltage Differential ............................. 35V
Output to Ground Voltage
(Shunt Mode Current Limit)................................. 16V
Trim Pin to Ground Voltage
Positive ................................................. Equal to V
OUT
Negative ............................................................. –20V
Output Short-Circuit Duration
V
IN
= 35V ......................................................... 10 sec
V
IN
≤ 20V ..................................................... Indefinite
Operating Temperature Range
LT1031M .......................................... –55°C to 125°C
LT1031C .................................................. 0°C to 70°C
Lead Temperature (Soldering, 10 sec).................. 300°C
LT1031
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
R
Output Voltage (Note 2) LT1031B 9.995 10.000 10.005 V
LT1031C 9.990 10.000 10.010 V
LT1031D 9.980 10.000 10.020 V
∆V
R
Output Voltage Temperature T
MIN
≤ T
J
≤ T
MAX
∆T Coefficient (Note 3) LT1031B ● 3 5 ppm/°C
LT1031C
● 6 15 ppm/°C
LT1031D ● 10 25 ppm/°C
∆V
R
Line Regulation (Note 4) 11.5V ≤ V
IN
≤ 14.5V 1 4 ppm/V
∆V
IN
● 6 ppm/V
4.5V ≤ V
IN
≤ 40V 0.5 2 ppm/V
● 4 ppm/V
∆V
R
Load Regulation (Sourcing Current) 0 ≤ I
OUT
≤ 10mA 12 25 ppm/mA
∆I
O
(Note 4) ● 40 ppm/mA
∆V
R
Load Regulation (Shunt Mode) 1.7mA ≤ I
SHUNT
≤ 10mA 50 100 ppm/mA
∆I
O
(Notes 4, 5) ● 150 ppm/mA
I
Q
Series Mode Supply Current 1.2 1.7 mA
● 2.0 mA
I
MIN
Shunt Mode Minimum Current V
IN
is Open 1.1 1.5 mA
Output Short-Circuit Current 11V ≤ V
IN
≤ 35V 30 mA
Minimum Input Voltage (Note 7) l
OUT
≤ 1mA 10.8 11.0 V
e
n
Output Voltage Noise 0.1Hz ≤ f ≤ 10Hz 6 µV
P-P
10Hz ≤ f ≤ 10kHz 11 µV
RMS
∆V
R
Long Term Stability of ∆t = 1000 Hrs 15 ppm
∆Time Output Voltage Non-Cumulative
Temperature Hysteresis of Output ∆T = 50°C 5 ppm
ABSOLUTE AXI U RATI GS
WWWU
(Note 1)
PACKAGE/ORDER I FOR ATIO
UU
W
(LT1031) The
●
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 15V, I
OUT
= 0, Mil or Comm version, unless noted.
ELECTRICAL CHARACTERISTICS
ORDER PART NUMBER
LH0070-0H
LH0070-1H
LH0070-2H
BOTTOM VIEW
INPUT
1
2
3
OUTPUT
GROUND
H PACKAGE
3-LEAD TO-39 METAL CAN
T
JMAX
= 150°C, θ
JA
= 150°C/W, θ
JC
= 45°C/W (LH0070)
T
JMAX
= 150°C, θ
JA
= 150°C/W, θ
JC
= 45°C/W (LT1031M)
T
JMAX
= 85°C, θ
JA
= 150°C/W, θ
JC
= 45°C/W (LT1031C)
LT1031BMH
LT1031DMH
LT1031BCH
LT1031CCH
LT1031DCH
3
LT1031/LH0070
1031fb
(LH0070) The ● denotes the specifications which apply over the full
operating temperature range. V
IN
= 15V, R
L
= 10kΩ, –55°C ≤ T
A
≤ 125°C, unless noted.
ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Output voltage is measured immediately after turn-on. Changes
due to chip warm-up are typically less than 0.005%.
Note 3: Temperature coefficient is measured by dividing the change in
output voltage over the temperature range by the change in temperature.
Separate tests are done for hot and cold: T
MIN
to 25°C and 25°C to T
MAX
.
Incremental slope is also measured at 25
°
C. For LT1031BMH, the
5ppm/°C drift specification is for –25°C to 85°C. Drift over the full –55°C
to 125°C range is guaranteed to 7ppm/°C.
Note 4: Line and load regulation are measured on a pulse basis. Output
changes due to die temperature change must be taken into account
separately. Package thermal resistance is 150°C/W.
Note 5: 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.
Note 6: Temperature drift is guaranteed from –25°C to 85°C on LH0070.
Note 7: See curve for guaranteed minimum V
IN
versus I
OUT
.
Note 8: Guaranteed by design.
LH0070
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
R
Output Voltage T
A
= 25°C 10.000 V
∆V
R
Output Accuracy T
A
= 25°C
– 0, –1 ± 0.03 ± 0.1 %
– 2 ± 0.02 ± 0.05 %
∆V
R
Output Accuracy T
A
= –55°C, 125°C
– 0, –1
● 0.3 %
– 2 0.2 %
∆V
R
Output Voltage Change Note 6
∆T with Temperature
– 0
● ± 0.2 %
– 1
● ± 0.02 ± 0.1 %
– 2
● ± 0.01 ± 0.04 %
∆V
R
Line Regulation 13V ≤ V
IN
≤ 33V, T
A
= 25°C
∆V
IN
– 0, –1 0.006 0.1 %
– 2 0.006 0.03 %
Input Voltage Range ● 11.4 40 V
∆V
R
Load Regulation 0mA ≤ l
OUT
≤ 5mA ● 0.01 0.03 %
∆I
O
I
Q
Quiescent Current 13V ≤ V
IN
≤ 33V ● 1.2 5 mA
∆l
Q
Change in Quiescent Current ∆V
IN
= 20V from 13V TO 33V ● 0.1 1.5 mA
∆V
IN
e
n
Output Noise Voltage 6 µV
P-P
Ripple Rejection f = 120Hz ● 0.001 %/V
P-P
r
O
Output Resistance ● 0.2 0.6 Ω
∆V
Z
Long Term Stability T
A
= 25°C (Note 8)
∆Time – 0, –1 ± 0.2 %/Yr
– 2 ± 0.05 %/Yr
P1-P3P4-P6P7-P9P10-P12

LH0070-2H

Mfr. #:
Buy LH0070-2H
Manufacturer:
Analog Devices / Linear Technology
Description:
Voltage References LH0070 - Precision 10V Reference
Lifecycle:
New from this manufacturer.
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