ZRA125A1 [ZETEX]
Analog Circuit;
| 型号： | ZRA125A1 |
| 厂家： | 
ZETEX SEMICONDUCTORS |
| 描述： | Analog Circuit |
| 文件： | 总5页 (文件大小：142K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PRECISION 1.25 VOLT
MICROPOWER VOLTAGE REFERENCE
ZRA125
ISSUE 2 - FEBRUARY 1997
DEVICE DESCRIPTION
•
•
•
•
•
•
•
Typical TC 30ppm/°C
Typical slope resistance 0.65Ω
The ZRA125 uses a bandgap circuit design to
achieve a precision micropower voltage
reference of 1.25 volts. The device is available
in small outline surface mount packages, ideal
for applications where space saving is
important, aswellaspackagesforthroughhole
requirements.
± 3%,2% and 1% tolerance
Industrial temperature range
Operating current 50µA to 5mA
Transient response, stable in less than 10µs
Optional extended current range
The ZRA125 design provides a stable voltage
without an external capacitor and is stable with
capacitive loads. The ZRA125 is recommended
for operation between 50µA and 5mA and so
is ideally suited to low power and battery
powered applications.
APPLICATIONS
•
•
•
•
•
•
Battery powered and portable equipment.
Metering and measurement systems.
Instrumentation.
Excellent performance is maintained to a
suggested absolute maximum of 25mA,
however the rugged design and 20 volt
processing allows the reference to withstand
transient effects and currents up to 200mA.
Superiorswitchingcapabilityallowsthedevice
to reach stable operating conditions in only a
few microseconds.
Data acquisition systems.
Precision power supplies.
Test equipment.
FEATURES
•
Small outline SOT23, SO8 and TO92 style
packages
•
No stabilising capacitor required
SCHEMATIC DIAGRAM
V
R
Gnd
1 - 24
ZRA125
ABSOLUTE MAXIMUM RATING
25mA
Power Dissipation (Tamb=25°C)
Reverse Current
SOT23
330mW
Forward Current
25mA
E-Line, 3 pin (TO92)
E-Line, 2 pin (TO92)
SO8
500mW
500mW
625mW
Operating Temperature
Storage Temperature
-40 to 85°C
-55 to 125°C
ELECTRICAL CHARACTERISTICS
TEST CONDITIONS (Unless otherwise stated) T =25°C
amb
CONDITIONS
LIMITS
TOL.
%
UNITS
SYMBOL PARAMETER
MIN
TYP MAX
1
2
3
VR
Reverse Breakdown Voltage
1.228 1.24 1.252
1.225 1.25 1.275
V
IR=150µA
1.21
1.25 1.29
IMIN
IR
Minimum Operating Current
30
50
5
µA
Recommended Operating
Current
0.05
mA
TC
Average Reverse
30
90
ppm/°C
Breakdown Voltage Temp. IR(min) to
Co.
IR(max)
RS
ZR
§
Slope Resistance
Reverse Dynamic Impedance
0.65 2
Ω
Ω
IR = 1mA
0.5
1
f
= 100Hz
IAC= 0.1 IR
EN
Wideband Noise Voltage
40
IR= 150µA
f = 100Hz to
10kHZ
µV(rms)
VR Changex 1000000
§
T =
C
V
R x Temperature Change
VR Change(IR (min) to IR (max))
IR (max) − IR (min)
R =
S
Reverse Voltage (V)
Reverse Characteristics
1 - 45
ZRA125
TYPICAL CHARACTERISTICS
µ
Temperature (°C)
Forward Current (mA)
Forward Characteristics
Temperature Drift
µ
Frequency (kHz)
Reference Current (mA)
Slope Resistance v Current
Slope Resistance v Frequency
Time (µs)
Time (µs)
Transient Response (I =5mA)
Transient Response (I =150µA)
1 - 26
ZRA125
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
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
ZRA125
ORDERING INFORMATION
Part No
Tol% Package
Partmark
ZRA12503
ZRA12502
ZRA12501
12A
Part No
Tol% Package
Partmark
ZRA125R3
ZRA125R2
ZRA125R1
ZRA12503
ZRA12502
ZRA12501
ZRA125A03
ZRA125A02
ZRA125A01
ZRA125F03
ZRA125F02
ZRA125F01
ZRA125N803
ZRA125N802
ZRA125N801
3
2
1
3
2
1
3
2
1
E-Line •
E-Line •
E-Line •
SOT23
SOT23
SOT23
SO8
ZRA125R03
ZRA125R02
ZRA125R01
ZRA125Y03
ZRA125Y02
ZRA125Y01
3
2
1
3
2
1
E-Line *
E-Line *
E-Line *
E-Line
E-Line
E-Line
12B
12D
ZRA12503
ZRA12502
ZRA12501
* E-Line 3 pin Reversed
E-Line 2 pin
• E-Line 3 pin
SO8
SO8
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