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LH0071-0H |LH00710HNSN/a142avaiLH0070 Series Precision BCD Buffered Reference
LH0071--0H |LH00710HNSN/a47avaiLH0070 Series Precision BCD Buffered Reference
LH0071-1H |LH00711HNSN/a45avaiLH0070 Series Precision BCD Buffered Reference
LH0071-2H |LH00712HNSN/a43avaiLH0070 Series Precision BCD Buffered Reference


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LH0071-0H-LH0071--0H-LH0071-1H-LH0071-2H
LH0070 Series Precision BCD Buffered Reference
TL/H/5550
LH0070
Series
Precision
BCD
Buffered
Reference
LH0071
Series
Precision
Binary
Buffered
Reference
July 1987
LH0070 Series Precision BCD Buffered Reference
LH0071 Series Precision Binary Buffered Reference
General Description
The LH0070and LH0071are precision, three terminal, volt-
age references consistingofa temperature compensated
zenerdiodedriven bya current regulatoranda buffer ampli-
fier.The devices providean accurate referencethatis virtu-
ally independentof input voltage, load current, temperature
and time. The LH0070hasa 10.000V nominal outputto
provide equal step sizesin BCD applications.The LH0071
hasa 10.240V nominal outputto provide equal step sizesin
binary applications.
The output voltageis establishedby trimming ultra-stable,
low temperaturedrift,thinfilm resistors underactual operat-
ing circuit conditions. The devicesare shortcircuit proofin
boththe current sourcingand sinking directions.
The LH0070 and LH0071 series combine excellent long
term stability, easeof application, and low cost, making
them idealchoices asreference voltages inprecisionDtoA
andAtoD systems.
Features Accuracy output voltage
LH0070 10Vg0.02%
LH0071 10.24Vg0.02% Single supply operation 11.4Vto 40V Low output impedance 0.2X Excellentline regulation 0.1 mV/V Low zener noise 20 mVp-p 3-lead TO-5(pin compatible withthe LM109) Short circuit proof Low standby current 3mA
Equivalent Schematic
TL/H/5550–1
Connection Diagram
TO-5MetalCan Package
TL/H/5550–7
Order Number LH0070-0H, LH0071-0H,LH0070-1H,
LH0071-1H,LH0070-2HorLH0071-2H
SeeNS Package Number H03B
Typical Applications
Statistical Voltage Standard
TL/H/5550–8
*Output VoltageFineAdjustment
TL/H/5550–9
*Note:The outputofthe LH0070and LH0071maybe adjustedtoa precise voltageby usingthe above circuit sincethe supply currentofthe devicesis
relativelysmalland constantwith temperatureand inputvoltage.Forthe circuit shown, supply sensitivitiesare degraded slightlyto 0.01%/V changeinVOUT
for changesinVINandVb. additional temperaturedriftof 0.0001%/§C isaddedduetothe variationof supplycurrentwith temperature ofthe LH0070and LH0071. Sensitivitytothe
valueofR1,R2andR3isless than0.001%/%.
C1995National SemiconductorCorporation RRD-B30M115/PrintedinU.S.A.
ic,good price


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