NJM2825 Просмотр технического описания (PDF) - Japan Radio Corporation

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NJM2825

Precision Micropower Shunt Voltage Reference

Japan Radio Corporation  

NJM2825

■TEST CIRCUIT

Input

VREF

FB

VKA

IK

CATHODE

ANODE

Input

R1

R2

VREF

FB

IFB

VKA

IK

CATHODE

ANODE

Fig.1 VKA=VREF to test circuit

VFB=VA

■TYPICAL CHARACTERISTICS

1206

Reference Voltage vs. Temperature

(IK=0.8µA,

V =V )

FB A

1204

1202

1200

1198

1196

1194

-50 -25 0 25 50 75 100 125

Ambient Temperature Ta (oC)

Reference Voltage vs. Cathode Current

1400

(V =V , Ta=25oC)

FB A

1200

1000

800

600

400

0

0.2 0.4 0.6 0.8

1

Cathode Current Ik (µA)

Fig.2 VKA>VREF to test circuit

VKA

=

VREF1 +



R2

R1





+

IFB × R2

Reference Voltage vs Cathode Current

15

(VFB=VA )

Ta=-40oC

12

9

6

Ta=25oC

3

0

Ta=75oC

0.0001 0.001 0.01 0.1 1 10 100

Cathode Current Ik (mA)

Reference Voltage vs. Cathode Voltage

1202 (R1=120kΩ, R2=val, IK=2µA, Ta=25oC)

1200

1198

1196

1194

1192

1190

1188

0

5

10

15

Cathode Voltage VK (V)

Ver.2009-03-05

-3-

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