AD5757 datasheet(19/44 Pages) AD

19 / 44 page

AD5757

Rev. A | Page 19 of 44

REFERENCE

–2

0.2

0.4

0.6

0.8

1.0

1.2

TIME (ms)

AVDD

REFOUT

TA = 25°C

Figure 38. REFOUT Turn-On Transient

–1

–2

–3

TIME (s)

AVDD = 15V

TA = 25°C

Figure 39. REFOUT Output Noise (0.1 Hz to 10 Hz Bandwidth)

150

100

–50

–100

–150

TIME (ms)

AVDD = 15V

TA = 25°C

Figure 40. REFOUT Output Noise (100 kHz Bandwidth)

5.0000

5.0005

5.0010

5.0015

5.0020

5.0025

5.0030

5.0035

5.0040

5.0045

5.0050

–40

–20

20406080

100

TEMPERATURE (°C)

30 DEVICES SHOWN

AVDD = 15V

Figure 41. REFOUT vs. Temperature (When the AD5757 is soldered onto a

PCB, the reference shifts due to thermal shock on the package. The average

output voltage shift is –4 mV. Measurement of these parts after seven days

shows that the outputs typically shift back 2 mV toward their initial values.

This second shift is due to the relaxation of stress incurred during soldering.)

5.002

5.001

5.000

4.999

4.998

4.997

4.996

4.995

LOAD CURRENT (mA)

AVDD = 15V

TA = 25°C

Figure 42. REFOUT vs. Load Current

5.00000

4.99995

4.99990

4.99980

4.99985

4.99975

4.99970

4.99965

4.99960

AVDD (V)

TA = 25°C

Figure 43. REFOUT vs. Supply

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