PRECISION 4.1 VOLT MICROPOWER
VOLTAGE REFERENCE
ISSUE 3 - FEBRUARY 1998
ZR4040-4.1
DEVICE DESCRIPTION
The ZR4040-4.1 uses a bandgap circuit
design to achieve a precision micropower
voltage reference of 4.1 volts. The device
is available in small outline surface mount
packages, ideal for applications where
space saving is important, as well as
packages for through hole requirements.
The ZR4040-4.1 design provides a stable
voltage without an external capacitor and
is stable with capacitive loads. The
ZR4040-4.1 is recommended for operation
between 60µA and 15mA 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
de v i c e t o r e a c h s t a b l e ope ra ti n g
conditions in only a few microseconds.
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Small outline SO8 and SOT23
packages
TO92 style package
No stabilising capacitor required
Typical T
C
20ppm/°C
Typical slope resistance 0.55Ω
2% and 1% tolerance
Industrial temperature range
Operating current 60µA to 15mA
APPLICATIONS
Battery powered and portable
equipment.
Metering and measurement systems.
Instrumentation.
Test equipment.
Data acquisition systems.
Precision power supplies.
Crystal oscillators.
SCHEMETIC DIAGRAM
V
R
G
nd
4-177
ZR4040-4.1
ABSOLUTE MAXIMUM RATING
Reverse Current
Forward Current
Operating Temperature
Storage Temperature
25mA
25mA
-40 to 85°C
-55 to 125°C
Power Dissipation (T
amb
=25°C)
SOT23
330mW
SO8
625mW
E-Line, 3 pin (TO92)
500mW
ELECTRICAL CHARACTERISTICS
TEST CONDITIONS (Unless otherwise stated) T
amb
= 25°C
SYMBOL PARAMETER
CONDITION
MIN
V
R
I
MIN
I
R
T
C
†
R
S
§
Z
R
Reverse Breakdown
Voltage
Minimum Operating
Current
Recommended Operating
Current
Average Reverse Breakdown
Voltage Temp. Co.
I
R(min)
to I
R(max)
Slope Resistance
Reverse Dynamic
Impedance
Wideband Noise Voltage
I
R
= 1mA
f = 100Hz
I
AC
= 0.1 I
R
I
R
= 1mA
f = 10Hz to
10kHz
0.06
20
0.55
0.5
I
R
=150µA
4.05
4.01
LIMITS
TYP
MAX
1
2
V
µA
mA
ppm/°C
Ω
Ω
TOL
UNITS
4.096 4.14
4.096 4.18
25
60
15
100
2
1.2
E
N
90
µV(rms)
†
T
C
=
(
V
R
(
max
)
−
V
R
(
min
)
)
x
1000000
Reverse Current (µA)
50
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.
§
40
30
20
T
A
=85°C
T
A
=25°C
T
A
=-40°C
R
S
=
V
R
Change
(
I
R
(
min
)
to I
R
(
max
))
I
R
(
max
) −
I
R
(
min
)
10
0
0
2.0
4.0
Reverse Voltage (V)
Reverse Characteristics
4-178
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