Diodes ZRC400 User Manual
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Diodes Incorporated
ZRC400
PRECISION 4.096 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE
Description
The ZRC400 uses a bandgap circuit design to achieve a
precision micropower voltage reference of 4.096 volts. The
device is available in a small outline surface mount package,
ideal for applications where space saving is important, as
well as packages for through hole requirements.
The ZRC400 design provides a stable voltage without an
external capacitor and is stable with capacitive loads. The
ZRC400 is recommended for operation between 23A 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 volt
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, 18A typical
• Typical TC 30ppm/°C
• Typical slope resistance 0.4
• 1% tolerance
• Industrial temperature range
• Operating current 23A to 5mA
• Transient response, stable in less than 10s
• “Green” molding compound
Pin Assignments
SOT23 Package Suffix - F
Pin 1 floating or connected to pin 1
E-Line, 3 pin Package Suffix - A
OBSOLETE
(Bottom View)
Pin 1 floating or connected to pin 3
(Top View)
Applications
• Battery powered and portable equipment
• Instrumentation
• Test equipment
• Metering and measurement systems
Typical Application Circuit
ZRC400
Document number: DS32164 Rev. 5 - 2
1 of 6
www.diodes.com
June 2010
© Diodes Incorporated
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Diodes Incorporated
Absolute Maximum Ratings (Voltages to GND Unless Otherwise Stated)
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
AMB
= 25°C)
330 mW
Product Line o
ZRC400
Electrical Characteristics (Test conditions: T
= 25°C, unless otherwise specified.)
amb
Symbol Parameter Condition Min. Typ. Max. Tol. (%) Unit
VR
I
MIN
IR
T
R
ZR
EN
Reverse breakdown voltage
Minimum operating current 18 23
IR = 150µA
Recommended operating current 0.023 5
(*)
C
(†)
S
Average reverse breakdown voltage
temperature coefficient
Slope resistance 0.4 2
Reverse dynamic impedance
Wideband noise voltage
to
I
R(MIN)
I
R(MAX)
= 1mA
I
R
f = 100Hz
I
= 0.1IR
AC
= 150µA
I
R
f = 10Hz to
4.055 4.096 4.137 1 V
30 90
µA
mA
ppm/°C
0.3 0.8
90
µV(rms)
10kHz
Notes:
(V
– V
(*)
TC =
Note: V
voltage measured over the full operating temperature range.
(†)
RS =
.
R(MAX)
R(MAX
- V
V
Change (
R
V
R
R(MIN)
I
R(MAX
x (T
) x 1000000
R(MIN
– T
R(MIN
to I
MIN
R(MAX
)
)
MAX
is the maximum deviation in reference
IR(MIN
– I
ZRC400
Document number: DS32164 Rev. 5 - 2
)
2 of 6
www.diodes.com
June 2010
© Diodes Incorporated
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