A Product Line of
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 23μA 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.
Pin Assignments
SOT23 Package Suffix - F
(Top View)
Pin 1 floating or connected to pin 1
E-Line, 3 pin Package Suffix - A
OBSOLETE
Features
•
•
•
•
•
•
•
•
•
•
Small outline SOT23 package
No stabilizing capacitor required
Low knee current, 18μA typical
Typical TC 30ppm/°C
Typical slope resistance 0.4Ω
1% tolerance
Industrial temperature range
Operating current 23μA to 5mA
Transient response, stable in less than 10μs
“Green” molding compound
(Bottom View)
Pin 1 floating or connected to pin 3
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
A Product Line of
Diodes Incorporated
ZRC400
Absolute Maximum Ratings
(Voltages to GND Unless Otherwise Stated)
Parameter
Reverse Current
Forward Current
Operating Temperature
Storage Temperature
Power Dissipation (T
AMB
= 25°C)
SOT23
Rating
25
25
-40 to 85
-55 to 125
330
Unit
mA
mA
°C
°C
mW
Electrical Characteristics
Symbol
V
R
I
MIN
I
R
T
C
(*)
(†)
(Test conditions: Tamb = 25°C, unless otherwise specified.)
Parameter
Reverse breakdown voltage
Minimum operating current
Recommended operating current
Average reverse breakdown voltage
temperature coefficient
Slope resistance
Reverse dynamic impedance
Condition
I
R
= 150µA
Min.
4.055
0.023
Typ.
4.096
18
30
0.4
0.3
Max.
4.137
23
5
90
2
0.8
Tol. (%)
1
Unit
V
µA
mA
ppm/°C
Ω
Ω
R
S
Z
R
I
R(MIN)
to
I
R(MAX)
I
R
= 1mA
f = 100Hz
I
AC
= 0.1I
R
I
R
= 150µA
f = 10Hz to
10kHz
E
N
Notes:
(*)
Wideband noise voltage
90
µV(rms)
T
C
=
(V
R(MAX)
– V
R(MIN)
) x 1000000
V
R
x (T
(MAX)
– T
(MIN)
)
Note: V
R(MAX)
- V
R
(MIN)
is the maximum deviation in reference
voltage measured over the full operating temperature range.
(†)
R
S
=
V
R
Change (
IR(MIN)
to I
R(MAX
)
)
I
R(MAX)
– I
R(MIN)
)
.
ZRC400
Document number: DS32164 Rev. 5 - 2
2 of 6
www.diodes.com
June 2010
© Diodes Incorporated
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