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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 60A 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 TC 20ppm/C Typical slope resistance 0.55 2% and 1% tolerance Industrial temperature range Operating current 60A 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 85C -55 to 125C Power Dissipation (Tamb=25C) SOT23 330mW SO8 625mW E-Line, 3 pin (TO92) 500mW
ELECTRICAL CHARACTERISTICS TEST CONDITIONS (Unless otherwise stated) Tamb= 25C
SYMBOL PARAMETER CONDITION MIN VR IMIN IR TC RS ZR Reverse Breakdown Voltage Minimum Operating Current Recommended Operating Current Average Reverse Breakdown Voltage Temp. Co. IR(min) to IR(max) Slope Resistance Reverse Dynamic Impedance Wideband Noise Voltage IR = 1mA f = 100Hz IAC= 0.1 IR IR = 1mA f = 10Hz to 10kHz 0.06 20 0.55 0.5 IR=150A 4.05 4.01 LIMITS TYP MAX 1 2 V A mA ppm/C TOL UNITS
4.096 4.14 4.096 4.18 25 60 15 100 2 1.2
EN
90
V(rms)
TC =
(VR(max)-VR(min)) x 1000000
Reverse Current (A)
50
VR x (T(max)-T(min))
Note: VR(max) - VR(min) is the maximum deviation in reference voltage measured over the full operating temperature range.
40 30 20 TA=85C TA=25C TA=-40C
RS =
VR Change(IR (min) to IR (max)) IR (max) - IR (min)
10 0 0 2.0 4.0
Reverse Voltage (V)
Reverse Characteristics
4-178
ZR4040-4.1
TYPICAL CHARACTERISTICS
1.6 IR=150A to 5mA
1.2 1.0 0.8 0.6 0.4 0.1 1 10 100 1000
Reference voltage (V)
Forward Voltage (V)
1.4
4.10
4.08
4.06 -40 -20 0 20 40 60 80
Forward Current (mA)
Temperature (C)
Forward Characteristics
Temperature Drift
4.0
1000
Slope resistance ()
Slope resistance ()
IR=150A
100
IR=1mA
2.0 TA=-40C
10
IR=5mA
1
TA=25C TA=85C 0 0.1 1 10 0.1 0.01 0.1 1 10 100
Reference Current (mA)
Frequency (kHz)
Slope Resistance v Current
Slope Resistance v Frequency
4.0
4.0
5 mA 150 A
VR - (V)
VR - (V)
5 mA
150 A INPUT
INPUT
2.0
1K2 5mA
40K 150A OUTPUT
2.0
1K2 5mA
40K 150A OUTPUT
VIN - (V)
0
0
VIN - (V)
0 1000 2000
10 0
10 0 0 1 2 3 4
Time (s)
Time (s)
Transient Response (Single Pulse)
Transient Response (Repetitive Pulse)
4-179
ZR4040-4.1
CONNECTION DIAGRAMS
SO8 Package Suffix - N8 SOT23 Package Suffix - F
Top View
Top View - Pin 1 floating or connected to pin 2
E-Line, 3 pin, Rev Package Suffix - R
Bottom View - Pin 3 floating or connected to pin 1
ORDERING INFORMATION
Part Number ZR40402F41 ZR40401F41 ZR40402N841 ZR40401N841 ZR40402R41 ZR40401R41 Tol% Package Partmark 2 1 2 1 2 1 SOT23 SOT23 SO8 SO8 40E 40F ZR4040241 ZR4040141
E-Line * ZR4040241 E-Line * ZR4040141
* E-Line, 3 pin Reversed
4-180

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