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LM4040x50Q Electrical Characteristics

DVZ

DIZ

LM4040

PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

SLOS456J – JANUARY 2005 – REVISED SEPTEMBER 2006

at extended temperature range, full-range T

A = –40°C to 125°C (unless otherwise noted)

LM4040C50Q

LM4040D50Q

PARAMETER

TEST CONDITIONS

UNIT

MIN

TYP

MAX

MIN

TYP

MAX

Reverse breakdown voltage

IZ = 100 µA

°C

–25

–50

Reverse breakdown voltage

∆V

IZ = 100 µA

tolerance

Full range

–75

–125

125

°C

IZ,min

Minimum cathode current

µA

Full range

IZ = 10 mA

°C

±30

°C

±20

Average temperature coefficient

IZ = 1 mA

ppm/

°C

of reverse breakdown voltage

Full range

±100

±150

IZ = 100 µA

°C

±20

°C

0.5

IZ,min < IZ < 1 mA

Reverse breakdown voltage

Full range

1.4

1.8

change with cathode current

°C

3.5

change

1 mA < IZ < 15 mA

Full range

IZ = 1 mA, f = 120 Hz,

Reverse dynamic impedance

°C

0.5

1.1

0.5

1.1

Ω

IAC = 0.1 IZ

IZ = 100 µA,

Wideband noise

°C

µV

RMS

10 Hz

≤ f ≤ 10 kHz

t = 1000 h,

Long-term stability of reverse

TA = 25°C ± 0.1°C,

120

ppm

breakdown voltage

IZ = 100 µA

VHYST Thermal hysteresis(1)

∆T

A = –40°C to 125°C

0.08

(1)

Thermal hysteresis is defined as VZ,25°C (after cycling to –40°C) – VZ,25°C (after cycling to 125°C).

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