ZR285N801 [ZETEX]
PRECISION 2.5 VOLT MICROPOWER VOLTAGE REFERENCE; 精密2.5伏微功耗电压参考
| 型号： | ZR285N801 |
| 厂家： | 
ZETEX SEMICONDUCTORS |
| 描述： | PRECISION 2.5 VOLT MICROPOWER VOLTAGE REFERENCE |
| 文件： | 总4页 (文件大小：82K) |
| 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
ZR285-2.5
ISSUE 5 – FEBRUARY 1998
FEATURES
DEVICE DESCRIPTION
The ZR285 uses a bandgap circuit
Small outline SOT23 and SO8 packages
TO92 style packages
•
•
•
•
•
•
•
•
•
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.
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 20mA
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.
APPLICATIONS
Excellent performance ismaintained to
an absolute maximum of 30mA,
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.
Battery powered and portable equipment.
•
Metering and measurement systems.
•
Instrumentation.
•
Test equipment.
•
Data acquisition systems.
•
Precision power supplies.
•
SCHEMATIC DIAGRAM
V
R
Gnd
4-165
ZR285-2.5
ABSOLUTE MAXIMUM RATING
Power Dissipation (Tamb=25°C)
SO8
625mW
Reverse Current
30mA
SOT23
E-Line,2 Pin(TO92)
E-Line,3 Pin(TO92)
330mW
500mW
500mW
Forward Current
Operating Temperature
Storage Temperature
25mA
-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
2.475 2.5 2.525
1
V
IR=150µA
2.45
2.5 2.55
2
3
2.425 2.5 2.575
IMIN
IR
Minimum Operating Current
13 20
µA
Recommended Operating
Current
0.02
20
mA
TC
†
Average Reverse Breakdown
Voltage Temp. Co.
30 90
ppm/°C
IR= 1mA to
20mA
RS
ZR
§
Slope Resistance
0.4 1
Ω
Ω
Reverse Dynamic Impedance
IR = 1mA
0.3 0.8
f
= 100Hz
IAC=0.1 IR
EN
Wideband Noise Voltage
60
IR= 150µA
f = 10Hz to
10kHz
µV (rms)
(VR(max)−VR(min)) x 1000000
†
T =
C
40
30
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.
20
10
TA=25°C
VR Change(I (min) to IR (max))
R
§
R =
S
I
R (max) − IR (min)
0
0
1.0
2.0
3.0
Reverse Voltage (V)
Reverse Characteristics
4-166
ZR285-2.5
TYPICAL CHARACTERISTICS
1.4
1.2
1.0
0.8
0.6
0.4
0.2
2.51
2.50
2.49
2.48
2.47
IR=150µA to 5mA
1
100
0.001
10
-20
0
20
60
0.01
0.1
-40
40
80
Temperature (°C)
Forward Current (mA)
Forward Characteristics
Temperature Drift
1000
100
10
1.4
1.2
IR=150µA
85°C
25°C
-40°C
1.0
0.8
0.6
0.4
0.2
IR=5mA
1
IR=1mA
100K
1
10
100
10
100
1K
0.1
10K
Frequency (kHz)
Reference Current (mA)
Slope Resistance v Current
Slope Resistance v Frequency
10
0
10
0
IR=5mA
≈
≈
2
IR=5mA
IR=150µA
3
2
1
1
IR=150µA
0
0
0
4
12
0
4
12
8
16
8
16
Time (µs)
Time (µs)
Transient Response - Single pulse
Transient Response - Repetitive Test
4-167
ZR285-2.5
CONNECTION DIAGRAMS
E-Line, 2 pin Package Suffix – Y
E-Line, 3 pin,Rev Package Suffix – R
Bottom View
Bottom View –
Pin 3 floating or connected to pin 1
SOT23 Package Suffix – F
SO8 Package Suffix – N8
Top View –
Pin 1 floating or connected to pin 2
Top View
ORDERING INFORMATION
Part No
Tol% Package
Partmark
Part No
Tol% Package
Partmark
ZR285F03
ZR285F02
ZR285F01
ZR285N803
ZR285N802
ZR285N801
ZR285R03
ZR285R02
3
2
1
3
2
1
3
2
SOT23
SOT23
SOT23
SO8
28A
ZR285R01
ZR285Y03
ZR285Y02
ZR285Y01
1
3
2
1
E-Line * ZR28501
E-Line † ZR28503
E-Line † ZR28502
E-Line † ZR28501
28B
28C
ZR285803
ZR285802
ZR285801
SO8
* E-Line 3 pin Reversed
† E-Line 2 pin
SO8
E-Line * ZR28503
E-Line * ZR28502
4-168
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