3

Electrical characteristics

Limits are 100% production tested at 25 °C. Limits over full temperature range are guaranteed through correlation

and by design. Ik = 10 µA, Tamb = 25 °C (unless otherwise specified).

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

Vk

Reverse breakdown voltage

(Vk = 2.048 V)

Ik = 10 µA, LM4040A

2.0460

2.048

2.0500

V

Ik = 10 µA, LM4040B

2.0439

2.0521

Ik = 10 µA, LM4040C

2.0378

2.0582

Ik = 10 µA, LM4040D

2.0275

2.0685

Reverse breakdown voltage

(Vk = 2.5 V)

Ik = 10 µA, LM4040A

2.4975

2.50

2.5025

V

Ik = 10 µA, LM4040B

2.4950

2.5050

Ik = 10 µA, LM4040C

2.04875

2.5125

Ik = 10 µA, LM4040D

2.4750

2.5250

Reverse breakdown voltage

(Vk = 3.0 V)

Ik = 12 µA, LM4040A

2.9970

3.0

3.0030

V

Ik = 12 µA, LM4040B

2.9940

3.0060

Ik = 12 µA, LM4040c

2.9850

3.0150

Ik = 12 µA, LM4040D

2.9700

3.0300

Reverse breakdown voltage

(Vk = 4.096 V)

Ik = 20 µA, LM4040A

4.0919

4.096

4.1001

V

Ik = 20 µA, LM4040B

4.0878

4.1042

Ik = 20 µA, LM4040C

4.0755

4.1165

Ik = 20 µA, LM4040D

4.0550

4.1370

Reverse breakdown voltage

(Vk = 4.096 V)

Ik = 20 µA, LM4040A

4.9950

5.0

5.0050

V

Ik = 20 µA, LM4040B

4.9900

5.0100

Ik = 20 µA, LM4040C

4.9750

5.0250

Ik = 20 µA, LM4040D

4.9500

5.0500

Ikmin

Minimum operating current

Tamb = 25 °C, Vk <2.5 V

7.5

10

µA

-40 °C < Tamb < +125 °C

12

Tamb = 25 °C, Vk >3.0 V

15

20

-40 °C < Tamb < +125 °C

25

ΔVk/ΔT Average temperature coefficient

10 µA <Ik <20 mA

20

70

ppm/° C

ΔVk/ΔIk

Reverse breakdown voltage change

with operating current range

Ik min < Ik < 1 mA

-40 °C < Tamb < +125 °C

0.2

1

mV

1 mA < Ik < 15 mA

-40 °C < Tamb < +125 °C

1.7

4

Rka

Static impedance

ΔIk = 10 µA to 10 mA

0.15

0.3

Ω

Hys

Thermal hysteresis (1)

Ik =10 µA

120

ppm

Noise

Wideband noise

Ik = 10 µA, 10 Hz < f< 10 kHz

95

mVRMS

Low frequency noise

Ik = 10 µA, 0.1 Hz < f< 10 Hz

10

µVp-p

1. Thermal hysteresis is defined as the difference in voltage measured at +25 °C after cycling to -40 °C and the measurement at +25 °C after

cycling to temperature +125 °C.

LM4040

Electrical characteristics

DS13886 - Rev 2

page 4/22