Diodes ZRC330 User Manual

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Diodes Incorporated

PRECISION 3.3VOLT LOW KNEE CURRENT VOLTAGE REFERENCE

ZRC330

Description

The ZRC330 uses a bandgap circuit design to achieve a
precision micropower voltage reference of 3.3 volts. The
device is available in a small outline surface mount
package, ideal for applications where space saving is
important.

The ZRC330 design provides a stable voltage without an
external capacitor and is stable with capacitive loads. The
ZRC330 is recommended for operation bet ween 20µA and
5mA and so is ideally suited to low power and battery
powered applications.

Excellent performance is maintained to an absolute
maximum of 25mA, however the rugged design and 20 v olt
processing allows the reference to withstand transient
effects and currents up to 200mA. Superior switching
capability allows the device to reach stable operating
conditions in only a few microseconds.

Features

• Small outline SOT23 package

• No stabilizing capacitor required

• Low knee current, 15A typical

• Typical slope resistance 0.6

• ± 3%, ± 2% and 1% tolerance

• Industrial temperature range

• Operating current 20A to 5mA

• Green molding compound (No Br, Sb)

Pin Assignments

SOT23 Package Suffix – F

V

GND

Pin 1 floating or connected to pin 2

3

R

2

(Top View)

Typical Application Circuit

-

+

1

Applications

• Battery powered and portable equipment.

• Metering and measurement systems

• Instrumentation

• Test equipment

• Data acquisition systems

• Precision power supplies

• Crystal oscillators

ZRC330

Document number: DS32163 Rev. 7 - 2

1 of 5

www.diodes.com

March 2012

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Diodes Incorporated

ZRC330

PRECISION 3.3VOLT LOW KNEE CURRENT VOLTAGE REFERENCE

Absolute Maximum Ratings

Parameter Rating Unit

Reverse Current 25 mA
Forward Current 25 mA
Operating Temperature -40 to 85 °C
Storage Temperature -55 to 125 °C
Power Dissipation (T

SOT23

Electrical Characteristics (Test conditions: T

Symbol Parameter Condition Min. Typ. Max. Tol. (%) Unit

VR

I

MIN

IR

T

C

R

S

ZR

EN

Note:

(*)

T

Note: V
voltage measured over the full operating temperature range

(†)

R

Reverse breakdown voltage

Minimum operating current 15 20
Recommended operating current 0.02 5
Average reverse breakdown voltage

(*)

temperature coefficient

(†)

Slope resistance 0.6 2

Reverse dynamic impedance

Wideband noise voltage

=

C

S

R(MAX)

V

=

V

– V

R(MIN)

Change

= 25°C)

AMB

330 mW

AMB

IR = 150µA

to

I

R(MIN)

I

R(MAX)

IR = 1mA
f = 100Hz

= 0.1IR

I

AC

I

= 150µA

R

f = 10Hz to
10kHz

−

VV

()

x

I

1000000x

)MIN(R)MAX(R

TT

−

is the maximum deviation in reference

to

I

−

II

)MIN(R)MAX(R

)MIN()MAX(R

)MAX(R)MIN(RR

= 25°C, unless otherwise specified.)

3.27

3.234

3.201

15 50

0.5 1.2

75

40

30

20

3.3

3.3

3.3

3.33

3.366

3.399

T = 85°C

A

1
2
3

ppm/°C

µV(rms)

V

µA

mA





Reverse Current (µA)

10

0

ZRC330

Document number: DS32163 Rev. 7 - 2

2 of 5

www.diodes.com

T = 25°C

A

2.0 4.00.0

Reverse Voltage ( V)

T = -40°C

A

March 2012

© Diodes Incorporated