Zetex ZRC250R01, ZRC250R02, ZRC250R03, ZRC250Y01, ZRC250Y02 Datasheet
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PRECISION 2.5 VOLT LOW KNEE CURRENT |
ZRC250 |
VOLTAGE REFERENCE |
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ISSUE 3 - MARCH 1998 |
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DEVICE DESCRIPTION
The ZRC250 uses a bandgap circuit design to achieve a precision micropower voltage reference of 2.5 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 ZRC250 design provides a stable voltage without an external capacitor and is stable with capacitive loads. The ZRC250 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 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 device to reach stable operating conditions in only a few microseconds.
FEATURES
∙Small outline SOT23 and SO8 packages
∙TO92 style packages
∙No stabilising capacitor required
∙Low knee current, 15μA typical
∙Typical TC 30ppm/°C
∙Typical slope resistance 0.4Ω
∙± 3, 2 and 1% tolerance
∙Industrial temperature range
∙Operating current 20μA to 5mA
∙Transient response, stable in less than 10μs
∙Optional extended current range
APPLICATIONS
∙Battery powered and portable equipment.
∙Instrumentation.
∙Test equipment.
SCHEMATIC DIAGRAM
V
R
Gnd
4-247
ZRC250
ABSOLUTE MAXIMUM RATING
Reverse Current |
25mA |
Power Dissipation (Tamb=25°C) |
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SOT23 |
330mW |
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Forward Current |
25mA |
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E-line, 3 pin (TO92) |
500mW |
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Operating Temperature |
-40 to 85°C |
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E-line, 2 pin (TO92) |
500mW |
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Storage Temperature |
-55 to 125°C |
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SO8 |
625mW |
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ELECTRICAL CHARACTERISTICS
TEST CONDITIONS (Unless otherwise stated) Tamb=25°C
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PARAMETER |
CONDITIONS |
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LIMITS |
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TOL% |
UNITS |
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MIN |
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TYP |
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MAX |
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VR |
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Reverse Breakdown Voltage |
IR=150μA |
2.475 |
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2.5 |
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2.525 |
1 |
V |
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2.45 |
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2.5 |
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2.55 |
2 |
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2.425 |
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2.5 |
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2.575 |
3 |
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IMIN |
Minimum Operating Current |
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13 |
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20 |
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μA |
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IR |
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Recommended Operating |
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0.02 |
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5 |
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mA |
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Current |
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TC |
† |
Average Reverse |
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30 |
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90 |
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ppm/°C |
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Breakdown Voltage Temp. |
IR(min) to |
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Co. |
IR(max) |
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RS |
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Slope Resistance |
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0.4 |
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1 |
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Ω |
ZR |
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Reverse Dynamic Impedance |
IR = 1mA |
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0.3 |
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0.8 |
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Ω |
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f = 100Hz |
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IAC=0.1 IR |
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EN |
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Wideband Noise Voltage |
IR = 150μA |
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60 |
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μV(rms) |
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f = 10Hz to |
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10kHz |
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† TC = |
(VR(max)−VR(min)) x 1000000 |
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VR x (T(max)−T(min)) |
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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))
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40 |
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30 |
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A) |
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μ |
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( |
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rent |
20 |
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ur |
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C |
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e |
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ers |
10 |
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TA=25°C |
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ev |
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R |
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0 |
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0 |
1.0 |
2.0 |
3.0 |
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Reverse Voltage (V) |
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Reverse Characteristics |
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4-248
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