LT1027

3

sn1027 1027fcs

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Line Regulation (Note 4)

8V

6

12

ppm/V

q

25

ppm/V

10V

3

6

ppm/V

q

8

ppm/V

Load Regulation (Notes 4, 6)

Sourcing Current

–8

–3

6

ppm/mA

0

q

–10

8

ppm/mA

Sinking Current

q

30

120

ppm/mA

0

Supply Current

2.2

3.1

mA

q

3.5

mA

q

±30

±50

mV

Output Noise (Note 5)

0.1Hz

≤ f ≤ 10Hz

3

10Hz

≤ f ≤ 1kHz

2.0

6.0

Temperature Hysteresis

H package;

∆T = 25°C

10

ppm

Long Term Stability

H package

20

ppm/month

Note 5: RMS noise is measured with an 8-pole bandpass filter with a

center frequency of 30Hz and a Q of 1.5. The filter output is then rectified

and integrated for a fixed time period, resulting in an average, as opposed

to RMS voltage. A correction factor is used to convert average to RMS.

This value is then used to obtain RMS noise voltage in the 10Hz to 1000Hz

frequency band. This test also screens for low frequency "popcorn" noise

within the bandwidth of the filter. Consult factory for 100% 0.1Hz to 10Hz

noise testing.

Note 6: Devices typically exhibit a slight negative DC output impedance of

– 0.015

Ω. This compensates for PC trace resistance, improving regulation

at the load.

Note 1: Absolute Maximum Ratings are those values beyond which the life

of the part may be impaired.

Note 2: Output voltage is measured immediately after turn-on. Changes

due to chip warm-up are typically less than 0.005%.

Note 3: Temperature coefficient is determined by the "box" method in

which the maximum

Note 4: Line and load regulation measurements are done on a pulse basis.

Output voltage changes due to die temperature change must be taken into

account separately. Package thermal resistance is 150

°C/W for TO-5 (H),

130

°C/W for PDIP (N8), and 180°C/W for plastic SO (SO-8).

Ripple Rejection

CC

HARA TERISTICS

A

TYPICALPERFOR

CE

FREQUENCY (Hz)

10

90

100

110

120

100

100

1k

10k

1027 G01

80

70

60

50

FREQUENCY (Hz)

0.01

0.1

1

10

100

10

10k

100k

1M

1027 G02

100

1k

∆I = ±3mA AC

Output Impedance vs Frequency

Output Voltage

TEMPERATURE (

°C)

–50

5.002

5.004

5.006

25

75

1027 G03

5.000

4.998

–25

0

50

100

4.996

4.994

ELECTRICAL C

C