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Details, datasheet, quote on part number:ZRC250N801
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Datasheet text preview:
PRECISION 2.5 VOLT LOW KNEE CURRENT VOLTAGE REFERENCE
ISSUE 4 - JANUARY 2003 DEVICE DESCRIPTION
The ZRC250 uses a bandgap circuit design to achie ve a precision micropower voltage reference of 2.5 volts. The device is available in a small outline surface mount package, ideal for applications where space saving is important, as well as a package for through hole requirements. The ZRC250 design provides a stable voltage without an external capacitor and is stable w i t h 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 a n d cu r r e n t s up to 200mA. Superior sw itching capability allows the device to reach stable operating conditions in only a few microseconds. F EA TU R E S
ZRC250
· · · · · · · · · · · · · ·
Small outline SOT23 package 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 5mA Transient response, stable in less than 1 0µ s Optional extended current range
A P P L I C A TI O N S Battery powered and portable equipment. Instrumentation. Test equipment.
SCHEMATIC DIAGRAM
V
R
G nd
4 -2 4 7
ZRC250
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) S O T 23 33 0 m W E-line, 3 pin (TO92) 50 0 m W
ELECTRICAL CHARACTERISTICS TEST CONDITIONS (Unless otherwise stated) Tamb=25°C
SY M BO L P A RA M E TE R CONDITIONS M IN VR Reverse Breakdown Voltage IR=1 50 µA 2 .4 7 5 2 .4 5 2 .4 2 5 LIMITS TY P M A X 2.5 2.5 2.5 13 0 .0 2 30 IR(min) to IR ( m a x ) 0.4 IR = 1 m A f = 1 0 0H z IAC= 0.1 IR IR = 1 50 µA f = 10Hz to 10kHz
40
TOL%
UNITS
2 .5 2 5 2 .5 5 2 .5 7 5 20 5 90
1 2 3
V
IM I N IR TC
Minimum Operating Current Recommended Operating C ur r e n t Average Reverse Breakdown Voltage Temp. Co. Slope Resistance Reverse Dynamic Impedance
µA mA p p m / °C
RS § ZR
1 0 .8
0.3
EN
Wideband Noise Voltage
60 µV(r m s)
TC =
(VR(max)-VR(min)) x 1000000 VR x (T(max)-T(min))
Reverse Current (µA)
30
Note: VR(max) - VR(min) is the maximum deviation in reference voltage measured over the full operating temperature r a n ge . § RS = VR Change (IR (min) to IR (max)) IR (max) - IR (min)
20
10
TA=25°C
0 0
1.0
2.0
3.0
Reverse Voltage (V)
Reverse Characteristics
4- 24 8
ZRC250
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
-2 0
0
20
40
60
80
Forward Current (mA)
Temperature (°C)
Forward Characteristics
1000 1.4 1.2
Temperature Drift
IR=150µA
Slope resistance ()
85°C 25°C -40°C
100
Slope resistance ()
1 .0
0.8
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
VR (V)
1 0
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
4 -2 4 9
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