ZRA250_06 [ZETEX]
PRECISION 2.5 VOLT MICROPOWER VOLTAGE REFERENCE; 精密2.5伏微功耗电压参考
| 型号： | ZRA250_06 |
| 厂家： | 
ZETEX SEMICONDUCTORS |
| 描述： | PRECISION 2.5 VOLT MICROPOWER VOLTAGE REFERENCE |
| 文件： | 总5页 (文件大小：152K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PRECISION 2.5 VOLT MICROPOWER
VOLTAGE REFERENCE
ZRA250
ISSUE 5 - JANUARY 2006
DEVICE DESCRIPTION
FEATURES
The ZRA250 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.
Small outline SOT23, SO8 and TO92
style packages.
•
No stabilising capacitor required
Typical TC 30ppm/°C
•
•
•
•
•
•
•
Typical slope resistance 0.4Ω
± 3%, 2%,1% and 0.5% tolerance
Industrial temperature range
Operating current 50µA to 5mA
The ZRA250designprovidesastablevoltage
without an external capacitor and is stable
with capacitive loads. The ZRA250 is
recommended for operation between 50µA
and 5mA and so is ideally suited to low
power and battery powered applications.
Transient response, stable in less than
10µs
Optional extended current range
•
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.
APPLICATIONS
Battery powered and portable
equipment.
•
Metering and measurement systems.
•
Instrumentation.
•
Test equipment.
•
Data acquisition systems.
•
Precision power supplies.
•
SCHEMATIC DIAGRAM
Note:
VR
3%, 2% and 1% tolerance devices are
not recommended for new designs.
Refer to ZRC250
Gnd
4-232
ZRA250
Power Dissipation (Tamb=25°C)
ABSOLUTE MAXIMUM RATING
SOT23
330mW
500mW
500mW
625mW
Reverse Current
25mA
E-Line, 3 pin (TO92)
E-Line, 2 pin (TO92)
SO8
Forward Current
25mA
Operating Temperature
Storage Temperature
-40 to 85°C
-55 to 125°C
ELECTRICAL CHARACTERISTICS
TEST CONDITIONS (Unless otherwise stated) Tamb=25°C
CONDITIONS
LIMITS
TOL.
%
UNITS
SYMBOL PARAMETER
MIN
TYP MAX
VR
Reverse Breakdown Voltage
2.4875 2.5
2.475 2.5
2.5125 0.5
V
IR=150µA
2.525
2.55
1
2
3
2.45
2.5
2.425 2.5
2.575
IMIN
IR
Minimum Operating Current
25
50
5
µA
Recommended Operating
Current
0.05
mA
TC
†
Average Reverse Breakdown
Voltage Temp. Co.
30
90
ppm/°C
IR(min) to
IR(max)
RS
ZR
§
Slope Resistance
0.4
0.3
2
Ω
Ω
Reverse Dynamic Impedance IR = 1mA
= 100Hz
0.8
f
IAC=0.1 IR
EN
Wideband Noise Voltage
45
IR= 150µA
f = 10Hz to
10kHz
µV(rms)
60
50
40
30
20
(VR(max)−VR(min)) x 1000000
†
TC =
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.
C
°
5
8
=
TA
C
°
5
2
VR Change (IR (min) to IR (max))
=
TA
§
RS =
10
0
A
IR (max) − IR (min)
0.2
0.6
1.0
1.4
1.8
2.2
2.6
Reverse Voltage (V)
Reverse Characteristics
4-233
ZRA250
TYPICAL CHARACTERISTICS
1.4
1.2
1.0
0.8
0.6
2.53
2.52
2.51
2.50
2.49
2.48
2.47
IR =150µA to 5mA
0.4
0.2
0.1
1
10
100
1000
-40
-20
0
20
40
60
80
Forward Current (mA)
Temperature (°C)
Forward Characteristics
Temperature Drift
1000
IR=150µA
1.0
100
10
I
=1mA
R
I
=5mA
R
0.5
0
TA=-40°C
TA=25°C
1
TA=85°C
0.1
0.1
1
10
0.01
0.1
1
10
100
Frequency (kHz)
Reference Current (mA)
Slope Resistance v Current
Slope Resistance v Frequency
3.0
2.0
1.0
3.0
2.0
1.0
INPUT
INPUT
1K5
50K
OUTPUT
OUTPUT
0
0
10
10
0
0
0
0.1
0.2
0.3
0.4
0
1
2
3
4
Time (µs)
Time (µs)
R
µ
Transient Response (I =150 A)
R
Transient Response (I =5mA)
4-234
ZRA250
CONNECTION DIAGRAMS
E-Line, 3 pin,Rev Package Suffix – R
E-Line, 2 pin Package Suffix – Y
Bottom View –
Pin 3 floating or connected to pin 1
Bottom View
E-Line, 3 pin Package Suffix – A
SO8 Package Suffix – N8
Bottom View –
Pin 1 floating or connected to pin 3
Top View
SOT23 Package Suffix – F
Top View –
Pin 1 floating or connected to pin 2
4-235
ZRA250
ORDERING INFORMATION
Part No
Tol% Package Partmark
Part No
Tol% Package Partmark
ZRA250A03
ZRA250A02
ZRA250A01
3
2
1
E-Line • ZRA25003
E-Line • ZRA25002
E-Line • ZRA25001
E-Line • ZRA250005
ZRA250R03
ZRA250R02
ZRA250R01
3
2
1
E-Line * ZRA250R3
E-Line * ZRA250R2
E-Line * ZRA250R1
E-Line * ZRA250R05
E-Line † ZRA25003
E-Line † ZRA25002
E-Line † ZRA25001
E-Line † ZRA250005
ZRA250A005 0.5
ZRA250R005 0.5
ZRA250F03
ZRA250F02
ZRA250F01
3
2
1
SOT23
SOT23
SOT23
SOT23
SO8
25A
ZRA250Y03
ZRA250Y02
ZRA250Y01
3
2
1
25C
25B
ZRA250F005 0.5
25Y
ZRA250Y005 0.5
ZRA250N803
ZRA250N802
ZRA250N801
3
2
1
ZRA25003
ZRA25002
ZRA25001
ZRA250005
* E-Line 3 pin Reversed
† E-Line 2 pin
• E-Line 3 pin
SO8
SO8
ZRA250N8005 0.5
SO8
Note:
3%, 2% and 1% tolerance devices are
not recommended for new designs.
Refer to ZRC250
4-236
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