LM385BMX-2.5 National Semiconductor, LM385BMX-2.5 Datasheet - Page 8

• Manufacturer Part Number: LM385BMX-2.5
• Description: IC,VOLT REFERENCE,FIXED,2.5V,BIPOLAR,SOP,8PIN,PLASTIC
• Manufacturer: National Semiconductor

Specifications of LM385BMX-2.5

• Rohs Compliant: NO

www.national.com
LM385-2.5 Applications
Adjustment Procedure
1. Adjust TC ADJ pot until voltage across R1 equals Kelvin
2. Adjust zero ADJ pot until voltage across R2 equals the
temperature multiplied by the thermocouple Seebeck
coefficient.
thermocouple Seebeck coefficient multiplied by 273.2.
Micropower Thermocouple Cold Junction
Compensator
Typical supply current 50 µA
Thermocouple
Type
T
K
S
J
Improving Regulation of Adjstable Regulators
(Continued)
Seebeck
efficient
(
µ
52.3
42.8
40.8
Co-
V/˚C)
6.4
DS005519-6
63.4 150
523 1.24k
432
412 953
( )
R1
8
( )
R2
1k
DS005519-7
Across R1
Voltage
@
15.60
12.77
12.17
1.908
(mV)
25˚C
Across R2
Voltage
14.32
11.78
11.17
1.766
(mV)