LT10041.2, LT10042.5

MICROPOWER INTEGRATED VOLTAGE REFERENCES

SLVS022L − JANUARY 1989 − REVISED OCTOBER 2006

7

POST OFFICE BOX 655303

Figure 5

LT1004x-1.2

REFERENCE IMPEDANCE

vs

REFERENCE CURRENT

IZ − Reference Current − mA

f = 25 Hz

TA = −55°C to 125°C

100

10

1

0.1

100

10

1

0.1

0.01

Figure 6

LT1004x-1.2

NOISE VOLTAGE

vs

FREQUENCY

f − Frequency − Hz

700

600

500

400

300

200

100

0

10

100

1 k

10 k

100 k

IZ = 100 µA

TA = 25°C

Figure 7

Cutoff Frequency − kHz

100

10

1

0.1

70

60

50

40

30

20

10

0

TL1004x-1.2

FILTERED OUTPUT NOISE VOLTAGE

vs

CUTOFF FREQUENCY

C

R

100

µA

RC Low Pass

IZ = 100 µA

TA = 25°C

Figure 8

Output

1.5

1

0.5

0

5

0

600

500

100

0

t − Time −

µs

Input

LT1004x-1.2

TRANSIENT RESPONSE

36 k

Ω

VO

VI

2

† Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.