PRECISION 3.3 VOLT LOW KNEE
CURRENT VOLTAGE REFERENCE
ZRC330
No stabilising capacitor required
Low knee current, 15µA typical
Typical slope resistance 0.6Ω
±
3%, 2% and 1% tolerance
Industrial temperature range
Operating current 20µA to 5mA
Battery powered and portable equipment.
Metering and measurement systems.
Instrumentation.
Test equipment.
Data acquisition systems.
Precision power supplies.
Crystal oscillators
ISSUE 2 - FEBRUARY 1997
DEVICE DESCRIPTION
The ZRC330 uses a bandgap circuit design to
achieve a precision micropower voltage
reference of 3.3 volts. The device is available
in small outline surface mount packages, ideal
for applications where space saving is
important.
•
•
•
•
•
•
APPLICATIONS
The ZRC330 design provides a stable voltage
without an external capacitor and is stable with
capacitive loads. The ZRC330 is recommended
for operation between 20µA 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.
FEATURES
•
•
•
•
•
•
•
•
Small outline SOT23, SO8 and TO92
style packages
SCHEMATIC DIAGRAM
V
R
G
nd
1 - 42
ZRC330
TYPICAL CHARACTERISTICS
1.6
3.31
I
R
=150
µ
A to 5mA
1.4
ZRC330
ABSOLUTE MAXIMUM RATING
Reverse Current
Forward Current
Operating Temperature
Storage Temperature
1.2
3.30
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
ELECTRICAL CHARACTERISTICS
TEST CONDITIONS (Unless otherwise stated) T
amb
=25°C
1.0
SYMBOL PARAMETER
0.8
3.29
CONDITIONS
TYP MAX
0.4
0.1
1
10
100
1000
-40
0.6
Forward Voltage (V)
MIN
V
Forward Current (mA)
Reference voltage (V)
LIMITS
TOL.%
UNITS
V
R
Reverse Breakdown Voltage
I
R
=150µA
Forward Characteristics
3.0
-20
0
20
40
60
80
3.27
3.234
3.2
15
5
15
2.0
T
A
=-40°C
3.3
3.3
3.3
20
mA
ppm/°C
µA
3.33
3.366
3.4
1
2
3
Temperature (°C)
I
MIN
Minimum Operating Current
Temperature Drift
1000
I
R
50
Recommended Operating Current
0.02
T
C
I
4
=150
µ
A
Average Reverse Breakdown
Voltage Temp. Co.
0.6
T
A
=25°C
I
R(min)
to
I
R(max)
2
1.2
1.0
100
I
4
=1mA
R
S
§
0.5
Ω
Slope Resistance
Ω
10
I
R
= 1mA
f = 100Hz
I
AC
= 0.1 I
R
43
0
Slope resistance (Ω)
T
A
=85°C
Slope resistance (Ω)
Z
R
Reverse Dynamic Impedance
I
4
=5mA
1
E
N
µV(rms)
Wideband Noise Voltage
0.1
0.1
1
10
0.01
0.1
1
10
100
I
R
= 150µA
f = 10Hz to
10kHZ
Reference Current (mA)
Frequency (KHz)
Slope Resistance v Current
Slope Resistance v Frequency
40
3.0
3.0
T
C
=
V
R
Change
x
1000000
V
R
x Temperature Change
30
2.0
5 mA
150
µ
A
5 mA
2.0
150
µ
A
V - (V)
20
T
)
=85°C
R
V - (V)
R
1.0
INPUT
1K3 43K
5mA 150
µ
A
OUTPUT
0
10
1.0
1K3
5mA
INPUT
43K
150
µ
A
OUTPUT
0
10
V
R
Change
(I
R
(min)
to I
R
(
max))
§
R
S
=
I
R
(
max
)
−
I
R
(
min)
T
)
=-40°C
T
)
=25°C
Reverse Current (µA)
- (V)
- (V)
V
NI
0
100
200
300
10
0
0
2.0
V
0
NI
0
4.0
Reverse Voltage (V)
Time (
µ
s)
0
1
Reverse Characteristics
Transient Response
(Single Pulse)
Transient Response
(Repetitive Pulse)
Time (
µ
s)
2
3
4
1 - 43
1 - 44
ZRC330
TYPICAL CHARACTERISTICS
1.6
3.31
I
R
=150
µ
A to 5mA
1.4
ZRC330
ABSOLUTE MAXIMUM RATING
Reverse Current
Forward Current
Operating Temperature
Storage Temperature
1.2
3.30
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
ELECTRICAL CHARACTERISTICS
TEST CONDITIONS (Unless otherwise stated) T
amb
=25°C
1.0
SYMBOL PARAMETER
0.8
3.29
CONDITIONS
TYP MAX
0.4
0.1
1
10
100
1000
-40
0.6
Forward Voltage (V)
MIN
V
Forward Current (mA)
Reference voltage (V)
LIMITS
TOL.%
UNITS
V
R
Reverse Breakdown Voltage
I
R
=150µA
Forward Characteristics
3.0
-20
0
20
40
60
80
3.27
3.234
3.2
15
5
15
2.0
T
A
=-40°C
3.3
3.3
3.3
20
mA
ppm/°C
µA
3.33
3.366
3.4
1
2
3
Temperature (°C)
I
MIN
Minimum Operating Current
Temperature Drift
1000
I
R
50
Recommended Operating Current
0.02
T
C
I
4
=150
µ
A
Average Reverse Breakdown
Voltage Temp. Co.
0.6
T
A
=25°C
I
R(min)
to
I
R(max)
2
1.2
1.0
100
I
4
=1mA
R
S
§
0.5
Ω
Slope Resistance
Ω
10
I
R
= 1mA
f = 100Hz
I
AC
= 0.1 I
R
43
0
Slope resistance (Ω)
T
A
=85°C
Slope resistance (Ω)
Z
R
Reverse Dynamic Impedance
I
4
=5mA
1
E
N
µV(rms)
Wideband Noise Voltage
0.1
0.1
1
10
0.01
0.1
1
10
100
I
R
= 150µA
f = 10Hz to
10kHZ
Reference Current (mA)
Frequency (KHz)
Slope Resistance v Current
Slope Resistance v Frequency
40
3.0
3.0
T
C
=
V
R
Change
x
1000000
V
R
x Temperature Change
30
2.0
5 mA
150
µ
A
5 mA
2.0
150
µ
A
V - (V)
20
T
)
=85°C
R
V - (V)
R
1.0
INPUT
1K3 43K
5mA 150
µ
A
OUTPUT
0
10
1.0
1K3
5mA
INPUT
43K
150
µ
A
OUTPUT
0
10
V
R
Change
(I
R
(min)
to I
R
(
max))
§
R
S
=
I
R
(
max
)
−
I
R
(
min)
T
)
=-40°C
T
)
=25°C
Reverse Current (µA)
- (V)
- (V)
V
NI
0
100
200
300
10
0
0
2.0
V
0
NI
0
4.0
Reverse Voltage (V)
Time (
µ
s)
0
1
Reverse Characteristics
Transient Response
(Single Pulse)
Transient Response
(Repetitive Pulse)
Time (
µ
s)
2
3
4
1 - 43
1 - 44
ZRC330
ORDERING INFORMATION
Part No
ZRC330A03
ZRC330A02
ZRC330A01
ZRC330F03
ZRC330F02
ZRC330F01
ZRC330N803
ZRC330N802
ZRC330N801
1
SO8
2
SO8
ZRC33002
ZRC33001
3
SO8
ZRC33003
1
SOT23
33C
2
SOT23
33B
3
SOT23
33A
ZRC330Y03
ZRC330Y02
ZRC330Y01
1
E-Line
•
ZRC33001
ZRC330R01
1
3
2
1
2
E-Line
•
ZRC33002
ZRC330R02
2
3
E-Line
•
ZRC33003
ZRC330R03
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
ZRC330R3
ZRC330R2
ZRC330R1
ZRC33003
ZRC33002
ZRC33001
ZRC330
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
ZRC330
ORDERING INFORMATION
Part No
ZRC330A03
ZRC330A02
ZRC330A01
ZRC330F03
ZRC330F02
ZRC330F01
ZRC330N803
ZRC330N802
ZRC330N801
1
SO8
2
SO8
ZRC33002
ZRC33001
3
SO8
ZRC33003
1
SOT23
33C
2
SOT23
33B
3
SOT23
33A
ZRC330Y03
ZRC330Y02
ZRC330Y01
1
E-Line
•
ZRC33001
ZRC330R01
1
3
2
1
2
E-Line
•
ZRC33002
ZRC330R02
2
3
E-Line
•
ZRC33003
ZRC330R03
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
ZRC330R3
ZRC330R2
ZRC330R1
ZRC33003
ZRC33002
ZRC33001
ZRC330
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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