PRECISION 4.0 VOLT MICROPOWER
VOLTAGE REFERENCE
ZRA400
No stabilising capacitor required
Typical T
C
15ppm/°C
Typical slope resistance 0.55Ω
±
3%, 2% and 1% tolerance
Industrial temperature range
Operating current 50µA to 5mA
Battery powered and portable equipment.
Metering and measurement systems.
Instrumentation.
Test equipment.
Data acquisition systems.
Precision power supplies.
Crystal oscillators
ISSUE 1 - JANUARY 1996
DEVICE DESCRIPTION
The ZRA400 uses a bandgap circuit design to
achieve a precision micropower voltage
reference of 4.096 volts. The device is available
in small outline surface mount packages, ideal
for applications where space saving is
important.
•
•
•
•
•
•
APPLICATIONS
The ZRA400 design provides a stable voltage
without an external capacitor and is stable with
capacitive loads.
The ZRA400 is
recommended for operation between 50µA
and 5mA and so is ideally suited to low power
and battery powered applications.
Excellent performance is maintained to a
suggested 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.
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•
•
•
•
•
•
FEATURES
•
Small outline SO8, SOT23 and TO92 style
packages.
SCHEMATIC DIAGRAM
V
R
G
nd
1 - 33
ZRA400
TYPICAL CHARACTERISTICS
1.6
4.10
I
R
=150
µ
A to 5mA
ZRA400
ABSOLUTE MAXIMUM RATING
Reverse Current
Forward Current
Operating Temperature
Storage Temperature
1.4
25mA
25mA
-40 to 85°C
-55 to 125°C
Power Dissipation (T
amb
=25°C)
SOT23
330mW
E-Line, 3 pin (TO92)
500mW
E-Line, 2 pin (TO92)
500mW
SO8
625mW
1.2
ELECTRICAL CHARACTERISTICS
TEST CONDITIONS (Unless otherwise stated) T
amb
=25°C
1.0
4.08
Forward Voltage (V)
0.8
0.6
Reference voltage (V)
4.06
-40
SYMBOL PARAMETER
TYP
0.4
CONDITIONS
MAX
1
2
3
V
Forward Current (mA)
0.1
1
10
100
1000
LIMITS
TOL.
%
UNITS
MIN
4.096 4.14
4.096 4.18
4.096 4.22
Forward Characteristics
V
R
Reverse Breakdown Voltage I
R
=150µA
-20
0
20
40
60
80
4.05
4.01
3.97
25
5
4.0
Temperature (°C)
Temperature Drift
I
MIN
mA
ppm/°C
2.0
T
A
=-40°C
Minimum Operating Current
50
µA
1000
I
R
15
50
0.05
Recommended Operating
Current
I
4
=150
µ
A
100
T
C
I
4
=1mA
Average Reverse
Breakdown Voltage Temp.
Co.
0.55
0.5
0
0.1
I
R(min)
to
I
R(max)
2
1.2
Ω
Ω
10
Slope resistance (Ω)
R
S
§
Slope Resistance
I
4
=5mA
Z
R
Slope resistance (Ω)
1
T
A
=25°C
T
A
=85°C
1
10
0.1
0.01
0.1
1
10
100
Reverse Dynamic Impedance I
R
= 1mA
f = 100Hz
I
AC
= 0.1 I
R
Reference Current (mA)
Frequency (kHz)
50
Slope Resistance v Current
Slope Resistance v Frequency
T
C
=
V
R
Change
x
1000000
V
R
x Temperature Change
40
4.0
5mA
150
µ
A
4.0
30
T
)
=85°C
T
)
=25°C
T
)
=-40°C
5mA
150
µ
A
V - (V)
R
V
R
Change
(I
R
(min)
to I
R
(
max))
I
R
(
max
)
−
I
R
(
min)
20
2.0
V - (V)
R
§
R
S
=
INPUT
40K
1K2
150
µ
A
5mA
OUTPUT
0
2.0
INPUT
40K
1K2
150
µ
A
5mA
OUTPUT
0
Reverse Current (µA)
10
- (V)
V
0
2.0
IN
- (V)
10
10
0
4.0
Reverse Voltage (V)
0
1000
2000
V
0
NI
0
0
1
2
3
4
Time (
µ
s)
Time (
µ
s)
Reverse Characteristics
Transient Response
(Single Pulse)
Transient Response
(Repetitive Pulse)
1 - 34
1 - 35
ZRA400
TYPICAL CHARACTERISTICS
1.6
4.10
I
R
=150
µ
A to 5mA
ZRA400
ABSOLUTE MAXIMUM RATING
Reverse Current
Forward Current
Operating Temperature
Storage Temperature
1.4
25mA
25mA
-40 to 85°C
-55 to 125°C
Power Dissipation (T
amb
=25°C)
SOT23
330mW
E-Line, 3 pin (TO92)
500mW
E-Line, 2 pin (TO92)
500mW
SO8
625mW
1.2
ELECTRICAL CHARACTERISTICS
TEST CONDITIONS (Unless otherwise stated) T
amb
=25°C
1.0
4.08
Forward Voltage (V)
0.8
0.6
Reference voltage (V)
4.06
-40
SYMBOL PARAMETER
TYP
0.4
CONDITIONS
MAX
1
2
3
V
Forward Current (mA)
0.1
1
10
100
1000
LIMITS
TOL.
%
UNITS
MIN
4.096 4.14
4.096 4.18
4.096 4.22
Forward Characteristics
V
R
Reverse Breakdown Voltage I
R
=150µA
-20
0
20
40
60
80
4.05
4.01
3.97
25
5
4.0
Temperature (°C)
Temperature Drift
I
MIN
mA
ppm/°C
2.0
T
A
=-40°C
Minimum Operating Current
50
µA
1000
I
R
15
50
0.05
Recommended Operating
Current
I
4
=150
µ
A
100
T
C
I
4
=1mA
Average Reverse
Breakdown Voltage Temp.
Co.
0.55
0.5
0
0.1
I
R(min)
to
I
R(max)
2
1.2
Ω
Ω
10
Slope resistance (Ω)
R
S
§
Slope Resistance
I
4
=5mA
Z
R
Slope resistance (Ω)
1
T
A
=25°C
T
A
=85°C
1
10
0.1
0.01
0.1
1
10
100
Reverse Dynamic Impedance I
R
= 1mA
f = 100Hz
I
AC
= 0.1 I
R
Reference Current (mA)
Frequency (kHz)
50
Slope Resistance v Current
Slope Resistance v Frequency
T
C
=
V
R
Change
x
1000000
V
R
x Temperature Change
40
4.0
5mA
150
µ
A
4.0
30
T
)
=85°C
T
)
=25°C
T
)
=-40°C
5mA
150
µ
A
V - (V)
R
V
R
Change
(I
R
(min)
to I
R
(
max))
I
R
(
max
)
−
I
R
(
min)
20
2.0
V - (V)
R
§
R
S
=
INPUT
40K
1K2
150
µ
A
5mA
OUTPUT
0
2.0
INPUT
40K
1K2
150
µ
A
5mA
OUTPUT
0
Reverse Current (µA)
10
- (V)
V
0
2.0
IN
- (V)
10
10
0
4.0
Reverse Voltage (V)
0
1000
2000
V
0
NI
0
0
1
2
3
4
Time (
µ
s)
Time (
µ
s)
Reverse Characteristics
Transient Response
(Single Pulse)
Transient Response
(Repetitive Pulse)
1 - 34
1 - 35
ZRA400
ORDERING INFORMATION
Part No
ZRA400A03
ZRA400A02
ZRA400A01
ZRA400F03
ZRA400F02
ZRA400F01
ZRA400N803
ZRA400N802
ZRA400N801
1
SO8
2
SO8
ZRA40002
ZRA40001
3
SO8
ZRA40003
1
SOT23
40C
2
SOT23
40B
3
SOT23
40A
ZRA400Y03
ZRA400Y02
ZRA400Y01
1
E-Line
•
ZRA40001
ZRA400R01
1
3
2
1
2
E-Line
•
ZRA40002
ZRA400R02
2
3
E-Line
•
ZRA40003
ZRA400R03
3
Tol% Package
Partmark
Part No
Tol% Package
E-Line *
E-Line *
E-Line *
E-Line
E-Line
E-Line
* E-Line 3 pin Reversed
E-Line 2 pin
•
E-Line 3 pin
Partmark
ZRA400R3
ZRA400R2
ZRA400R1
ZRA40003
ZRA40002
ZRA40001
ZRA400
CONNECTION DIAGRAMS
E-Line, 2 pin Package Suffix Y
E-Line, 3 pin,Rev Package Suffix R
Bottom View
Bottom View
Pin 3 floating or connected to pin 1
E-Line, 3 pin Package Suffix A
SO8 Package Suffix N8
Bottom View
Pin 1 floating or connected to pin 3
Top View
SOT23 Package Suffix F
Top View
Pin 1 floating or connected to pin 2
ZRA400
ORDERING INFORMATION
Part No
ZRA400A03
ZRA400A02
ZRA400A01
ZRA400F03
ZRA400F02
ZRA400F01
ZRA400N803
ZRA400N802
ZRA400N801
1
SO8
2
SO8
ZRA40002
ZRA40001
3
SO8
ZRA40003
1
SOT23
40C
2
SOT23
40B
3
SOT23
40A
ZRA400Y03
ZRA400Y02
ZRA400Y01
1
E-Line
•
ZRA40001
ZRA400R01
1
3
2
1
2
E-Line
•
ZRA40002
ZRA400R02
2
3
E-Line
•
ZRA40003
ZRA400R03
3
Tol% Package
Partmark
Part No
Tol% Package
E-Line *
E-Line *
E-Line *
E-Line
E-Line
E-Line
* E-Line 3 pin Reversed
E-Line 2 pin
•
E-Line 3 pin
Partmark
ZRA400R3
ZRA400R2
ZRA400R1
ZRA40003
ZRA40002
ZRA40001
ZRA400
CONNECTION DIAGRAMS
E-Line, 2 pin Package Suffix Y
E-Line, 3 pin,Rev Package Suffix R
Bottom View
Bottom View
Pin 3 floating or connected to pin 1
E-Line, 3 pin Package Suffix A
SO8 Package Suffix N8
Bottom View
Pin 1 floating or connected to pin 3
Top View
SOT23 Package Suffix F
Top View
Pin 1 floating or connected to pin 2
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