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Details, datasheet, quote on part number:ZR285N801
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Datasheet text preview:
PRECISION 2.5 VOLT MICROPOWER VOLTAGE REFERENCE
ISSUE 5 FEBRUARY 1998 DEVICE DESCRIPTION
Th e ZR285 uses a bandgap circuit de sign 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 ZR285 design provides a stable voltage without an external capacitor and is stable with capacitive loads. The ZR285 is recommended for operation between 20µA and 20mA and so is ideally suited to low power and battery powered applications. Excellent performance is maintained to a n absolute maximum of 30mA, however the rugged design and 20 volt processi ng allows the reference to w i t h s t a n d transi e n t effects and c u r r e n t s up to 200mA. Superior switching capability allows the device to reach stable operating conditions in only a few microseconds.
ZR285-2.5
F EATURES
· · · · · · · · · · · · · · ·
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 0.4 ± 3%, 2% and 1% tolerance Industrial temperature range Operating current 20µA to 20mA
APPLICATIONS
Battery powered and portable equipment. Metering and measurement systems. Instrumentation. Test equipment. Data acquisition systems. Precision power supplies.
SCHEMATIC DIAGRAM
V
R
G nd
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ZR285-2.5
ABSOLUTE MAXIMUM RATING
Reverse Current Forward Current Operating Temperature Storage Temperature 30mA 25mA -40 to 85°C -55 to 125°C Power Dissipation (Tamb=25°C) SO8 625mW SOT23 330mW E-Line,2 Pin(TO92) 500mW E-Line,3 Pin(TO92) 500mW
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 20 20 30 IR = 1mA to 20mA IR = 1mA f = 100Hz IAC= 0.1 IR IR = 150µA f = 10Hz to 10kHz 0.4 0.3 90 1 0.8 V TOL. % UNITS
2.475 2.5 2.45 2.5 2.425 2.5 13 0.02
IMIN IR TC RS § ZR
Minimum Operating Current Recommended Operating Current Average Reverse Breakdown Voltage Temp. Co. Slope Resistance Reverse Dynamic Impedance
µA mA ppm/°C
EN
Wideband Noise Voltage
60 µV (rms)
TC =
(VR(max)-VR(min)) x 1000000
VR x (T(max)-T(min))
Reverse Current (µA)
40
Note: VR(max) - VR(min) is the maximum deviation in reference voltage measured over the full operating temperature range.
30
20
§
RS =
VR Change(IR (min) to IR (max)) IR (max) - IR (min)
10
TA=25°C
0 0
1.0
2.0
3.0
Reverse Voltage (V)
Reverse Characteristics
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ZR285-2.5
TYPICAL CHARACTERISTICS
1.4 2.51 1.2
IR=150µA to 5mA
1.0
Reference voltage (V)
1 10 100
Forward Voltage (V)
2.50
0.8
2.49
0.6
0.4
2.48
0.2 2.47
0.001
0.01
0.1
-40
-20
0
20
40
60
80
Forward Current (mA)
Temperature (°C)
Forward Characteristics
1000 1.4 1.2
Temperature Drift
Slope resistance ()
1.0
0.8
Slope resistance ()
85°C 25°C -40°C
IR=150µA
100
10
0.6
IR=5mA
1
0.4
0.2
IR=1mA
0.1 1 10 100 10 100 1K 10K 100K
Reference Current (mA)
Frequency (kHz)
Slope Resistance v Current
Slope Resistance v Frequency
VIN (V)
10
10
VIN (V)
0
0
IR=5mA
3
IR=5mA
2
IR=150µA
1
VR (V)
2
0
VR (V)
1
IR=150µA
0
0
4
8
12
16
0
4
8
12
16
Time (µs)
Time (µs)
Transient Response - Single pulse
Transient Response - Repetitive Test
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