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Details, datasheet, quote on part number:ZR25D
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| Part: | ZR25D |
| Category: | Power Management => Voltage References => 2.5V |
| Description: | Precision 2.5v Micropower Voltage Reference |
| Company: | Zetex Inc. |
| Datasheet: | Download ZR25D datasheet File size : 55 kB |
| Request For quote: | Find where to buy ZR25D
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Datasheet text preview:
PRECISION 2.5 VOLT MICROPOWER VOLTAGE REFERENCE
ISSUE 2 - FEBRUARY 1998
ZR25D
DEVICE DESCRIPTION
The ZR25D uses a bandgap circuit design to achi eve a precision micropower voltage reference of 2.5 volts. The device is available in a small outline SOT23 surface mount package, ideal for applications where space saving is important. The ZR25D design provides a stable voltage without an external capacitor and is stable w i t h capacitive loads. The ZR25D 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 an absolute maximum of 25mA, however the rugged design and 20 volt processing allows the reference to withstand transient effects a n d currents up to 200mA. Superior switching capability allows the device to reach stable operating conditions in only a few microseconds.
FEATURES
· · · · · · · · · · · · · · ·
Small outline SOT23 package. No stabilising capacitor required Typical TC 30ppm/°C Typical slope resistance 0.4 ± 3%, 2% and 1% tolerance Industrial temperature range Operating current 50µA to 5mA Transient response, stable in less than 10µs Alternative package options available
APPLICATIONS Battery powered and portable equipment. Metering and measurement systems. Instrumentation. Test equipment. Data acquisition systems. Precision power supplies.
SCHEMATIC DIAGRAM
VR
G nd
4-161
ZR25D
ABSOLUTE MAXIMUM RATING
Reverse Current Forward Current Operating Temperature Storage Temperature 25mA 25mA -40 to 85°C -55 to 125°C Power Dissipation (Tamb=25°C) SOT23 330mW
ELECTRICAL CHARACTERISTICS TEST CONDITIONS (Unless otherwise stated) Tamb=25°C
SYMBOL PARAMETER CONDITIONS MIN VR Reverse Breakdown Voltage IR=150µA LIMITS TYP MAX 2.525 1 2.55 2 2.575 3 50 5 30 0.4 0.3 90 2 0.8 V TOL. % UNITS
2.475 2.5 2.45 2.5 2.425 2.5 25 0.05
IMIN IR TC RS § ZR
Minimum Operating Current Recommended Operating Current Average Reverse Breakdown Voltage Temp. Co. I R(min) to IR(max) Slope Resistance Reverse Dynamic Impedance IR = 1mA f = 100Hz IAC= 0.1 IR IR = 150µA f = 100Hz to 10kHz
µA mA ppm/°C
EN
Wideband Noise Voltage
45
µV(rms)
VR x (T(max)-T(min))
Reverse Current (µA)
TC =
(VR(max)-VR(min)) x 1000000
60 50 40 30 20 10 0 0.2 0.6 1.0 1.4 1.8 2.2 2.6
Note: VR(max) - VR(min) is the maximum deviation in reference voltage measured over the full operating temperature range.
§
RS =
VR Change(IR (min) to IR (max)) IR (max) - IR (min)
5°C =8 TA 5°C C =2 TA -40° = TA
Reverse Voltage (V)
Reverse Characteristics
4-162
ZR25D
TYPICAL CHARACTERISTICS
1.4 2.53 IR =150µA to 5mA
Forward Voltage (V)
1.0 0.8 0.6 0.4 0.2 0.1 1 10 10 0 1000
Reference voltage (V)
1.2
2.52 2.51 2.50 2.49 2.48 2.47 -40 -20 0 20 40 60 80
Forward Current (mA)
Temperature (°C)
Forward Characteristics
Temperature Drift
1000
I R=150µA
Slope resistance ()
Slope resistance ()
1.0
10 0
10
IR=1mA
0.5 TA=-40°C TA=25°C TA=85°C 0 0.1 1 10
IR=5mA
1
0.1 0.01 0.1 1 10 10 0
Reference Current (mA)
Frequency (kHz)
Slope Resistance v Current
Slope Resistance v Frequency
3.0
3.0
VR - (V)
VR - (V)
2.0
INPUT 50K
2.0
INPUT 1K5
1.0
OUTPUT
1.0
OUTPUT
0
0
VIN - (V)
VIN - (V)
0 1 2
10
10
0 3 4
0 0 0.1 0.2 0.3 0.4
Time (µs)
Time (µs)
µ Transient Response (IR=150µA)
Transient Response (IR=5mA)
4-163
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