LM385 / 385B
1.2 & 2. 5V M ICROPOWER
V OLTAGE
R EFERENCE
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KEY FEATURES
DESCRIPTION
The LM385/385B Micropower Voltage
References are two terminal bandgap reference
diodes designed and optimized for accurate low
power operation in portable and other power
The LM385 family is available in fixed 1.2V
and 2.5V reference values. Process and circuit
design optimization provides for high accuracy
with initial tolerance values of 1% for the
LM385B-1.2, 2% for the LM385-1.2, 1.5% for
the LM385B-2.5, and 3% for the LM385-2.5.
Complementing their initial accuracy, the
bandgap reference is temperature compensated
to deliver 20ppm performance over the 0° to
70°C operating temperature range.
Guaranteed 1% Initial Accuracy
(LM385B-1.2)
Guaranteed 2.5% Initial
Accuracy (LM385-1.2)
Guaranteed 1.5% Initial
Accuracy (LM385B-2.5)
Guaranteed 3.0% Initial
Accuracy (LM385-2.5)
Guaranteed 20µA Operating
Current
Low Temperature coefficient
Operating Current of 20µA to
20mA
Very Low Dynamic Impedance:
10Ω
sensitive systems.
Operating currents are
guaranteed from as low as 15µA up to 20mA for
the LX385/385B-1.2, and 20µA up to 20mA for
the LM385/385B-2.5, giving designers a great
deal of flexibility in optimizing power
consumption, noise and ultimate application
performance.
references output impedance is extraordinarily
low over the entire operating range of quiescent
As an added feature, the
The LM385 family from Linfinity is a pin-to-
pin replacement for the LM385/385B family of
voltage references.
current.
This enables an extremely wide
dynamic load range with little effect on the
overall reference accuracy.
APPLICATIONS
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
Portable Meter References
Portable Test Instruments
Battery Operated Systems
Current Loop Instrumentation
PRODUCT HIGHLIGHT
1.2V REFERENCE
M
ICROPOWER
R
EFERENCED FROM 9V BATTERY
5V
9V
38K
200K
2.5V
1.2V
LM385-1.2V
LM385-2.5V
PACKAGE ORDER INFO
Plastic SOIC
Plastic TO-92
3-Pin
Reference
Voltage
Initial
DM
8-Pin
LP
TA (°C)
Tolerance
RoHS Compliant / Pb-free RoHS Compliant / Pb-free
Transition DC: 0440
LM385DM-1.2
LM385BDM-1.2
LM385DM-2.5
LM385BDM-2.5
Transition DC: 0509
LM385LP-1.2
LM385BLP-1.2
LM385LP-2.5
LM385BLP-2.5
±30mV
±12mV
±75mV
±38mV
1.2V
2.5V
0 to 70
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX385BDM-TR)
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Copyright © 1996
Rev. 1.2a,2005-03-08
1
11861 WESTERN
A
VENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570