LM185-1.2/
LM285-1.2/LM385-1.2
Micropower Voltage
Reference
FEATURES
s
s
s
s
DESCRIPTIO
10µA to 20mA Operating Range
Guaranteed
1% Initial Voltage Tolerance
Guaranteed
1Ω Dynamic Impedance
Very Low Power Consumption
APPLICATIO S
s
s
s
s
Portable Meter References
Portable Test Instruments
Battery Operated Systems
Current Loop Instrumentation
The LM185-1.2 is a two terminal band gap reference diode
that has been designed for applications which require
precision performance with micropower operation. The
device provides guaranteed operating specifications at
currents as low as 10µA. The nominal voltage is 1.235V
with both 1% and 2% tolerances available. Some addi-
tional features are: maximum dynamic impedance of 1Ω,
low noise and excellent stability over time and tempera-
ture. Advanced design, processing and testing techniques
make Linear’s LM185-1.2 a superior choice over previous
designs. A micropower 5V reference application is shown
below. For guaranteed TC, micropower references, see the
LT1034 data sheet.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
Micropower 5V Reference
V
IN
7V TO 15V
OUTPUT VOLTAGE CHANGE (mV)
Reverse Voltage Change with Current
10
8
6
4
2
0
–2
0.01
T
A
= 25°C
V
+
LM334
V
–
R
5.6k
3
+
–
7
LT1494
6
5V
150pF
3.01M
1%
LM385-1.2
1M
1%
2
4
185/285/385 TA01a
U
0.1
1
10
REVERSE CURRENT (mA)
100
185/285/385 TA01b
U
U
1
LINER [ LINEAR TECHNOLOGY ]
