ZXRE125
SOT23 MICROPOWER 1.22V VOLTAGE REFERENCE
SUMMARY
DESCRIPTION
The ZXRE125 is a bandgap circuit designed to achieve a precision micropower
voltage reference of 1.22 volts. The device is available in the small outline SOT23
surface mount package which is ideal for applications where space saving is
important.
SOT23 tolerance is available to 0.5% for precision applications. Excellent
performance is maintained over the 8 A to 20mA operating current range with a
typical temperature coefficient of only 20ppm/°C. The device has been designed
to be highly tolerant of capacitive loads so maintaining excellent stability.
This device offers a SOT23 pin for pin compatible replacement of the ZRA124
and ZRA125 series of voltage references. An E-Line (TO92 style) package is also
available.
SOT23
FEATURES
•
•
•
•
•
•
•
•
•
•
High performance 1.220V reference
0.5%, 1%, 2% and 3% tolerance
4 A knee current
20ppm/°C typical temperature coefficient
Unconditionally stable
Small outline SOT23
E-line
SOT23
Package Suffix - F
E-line
Package Suffix - R
APPLICATIONS
Battery powered equipment
Precision power supplies
Portable instrumentation
Portable communications devices
Top view -
Pin 1 floating or
connected to pin 2
Bottom view -
Pin 3 floating or
connected to pin 1
•
Data acquisition systems
ORDERING INFORMATION
DEVICE
ZXRE125CFTA
ZXRE125DFTA
ZXRE125EFTA
ZXRE125FFTA
ZXRE125DRSTOA
ZXRE125ERSTOA
ZXRE125FRSTOA
TOL%
0.5
1
2
3
1
2
3
GRADE
C
D
E
F
PACKAGE
SOT23
SOT23
SOT23
SOT23
E-line
E-line
E-line
PARTMARKING
12J
12H
12G
12F
ZXRE125D
ZXRE125E
ZXRE125F
REEL
7”
7”
7”
7”
-
-
-
QUANTITY PER REEL
3,000
3,000
3,000
3,000
2,000
2,000
2,000
NOTE:
E-line parts available loose in boxes of 2,000 units, omit “STOA” from order code i.e. ZXRE125DR
ISSUE 7 - OCTOBER 2003
1
SEMICONDUCTORS
ZXRE125
ELECTRICAL CHARACTERISTICS
(at T
amb
= 25°C unless otherwise stated)
PARAMETER
SYMBOL CONDITIONS
I
R
= 100 A
MIN.
1.214
1.208
1.196
1.183
Minimum Knee Current
Recommended Operating
Current Range
Average Reverse
Breakdown Voltage
Temperature Coefficient
I
MIN
I
R
T
C (2)
I
R(min)
to I
R(max)
0.008
20
TYP.
1.220
1.220
1.220
1.220
4
MAX.
1.226
1.232
1.244
1.257
8
20
75
GRADE/ UNITS
TOL%
C/0.5
(1)
D/1
E/2
F/3
V
V
V
V
A
mA
ppm/°C
Reverse Breakdown Voltage V
R
Reverse Breakdown Change
∆
V
R
with Current Voltage
∆
I
R
Reverse Dynamic
Impedance
Z
R
I
R
= 30 A to 1 mA
I
R
= 1mA to 5mA
I
R
= 1mA
f = 100Hz
I
AC
= 0.1I
R
0.2
1
10
0.6
mV
mV
Wideband Noise Voltage
E
N
IR = 8 A to 100 A
f = 10Hz to 10kHz
60
V(rms)
NOTE:
(1) 0.5% SOT23 only
(
V
−
V
R
(min)
)
x
1000000
(2)
T
C
=
R
(max)
V
R
x
(
T
(max)
−
T
(min)
)
VR(max) - VR(min) is the maximum deviation in reference voltage measured over the full operating
temperature range
REVERSE CHARACTERISTICS
ISSUE 7 - OCTOBER 2003
SEMICONDUCTORS
4
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