ZRT100 PDF даташит
Спецификация ZRT100 изготовлена «Zetex Semiconductors» и имеет функцию, называемую «9.8V LOW POWER PRECISION REFERENCE SOURCE». |
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Детали детали
Номер произв | ZRT100 |
Описание | 9.8V LOW POWER PRECISION REFERENCE SOURCE |
Производители | Zetex Semiconductors |
логотип |
4 Pages
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9.8V LOW POWER
PRECISION REFERENCE SOURCE
ISSUE 1 - OCTOBER 1995
ZRT100
DEVICE DESCRIPTION
The ZRT100 is a monolithic integrated circuit
providing a precise stable reference voltage
of 9.8V at 500µA.
The circuit features a knee current of 150µA
and operation over a wide range of
temperatures and currents.
The ZRT100 is available in a 3-pin metal can
package for through hole applications as
well as SOT223 and SO8 packages for
surface mount applications. Each package
option offers a trim facility whereby the
output voltage can be adjusted as shown in
Fig.1. This facility is used when
compensating for system errors or setting
the reference output to a particular value.
When the trim facility is not used, the pin
should be left open circuit.
FEATURES
• Trimmable output
• Excellent temperature stability
• Low output noise figure
• Available in two temperature ranges
• 1 and 2% initial voltage tolerance
versions available
• No external stabilising capacitor
required in most cases
• Low slope resistance
• TO18 package
• SOT223 and SO8 small outline
packages
SCHEMATIC DIAGRAM
R
VCC
VR
R=VCC-VR
IR
RT=100k
(Optional trim facility)
Gnd
Gnd
Figure 1:
This circuit will allow the reference to be
trimmed over a wide range. The device is
specified over a Ϯ5% trim range.
4-295
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ZRT100
ABSOLUTE MAXIMUM RATING
Reverse Current
30mA ø
Operating Temperature
A grade
C grade
-55°C to 125°C
0°C to 70°C
Storage Temperature
TO18
-55 °C to 175 °C
SO8, SOT223 -55 °C to 125 °C
Power Dissipation (Tamb=25°C)
TO18
300mW
SO8
625mW
SOT223
2W
ø Above 25°C this figure should be linearly
derated to 6mA at 125°C
TEMPERATURE DEPENDENT ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER
INITIAL
VOLTAGE
TOLERANCE
%
GRADE A
-55°C TO 125°C
TYP MAX
GRADE C
0°C TO 70°C
TYP MAX
⌬VR Output voltage
1&2
change over relevant
temperature range
(See note (a))
27.0 90.0 10.8 34.4
TCVR
Output voltage
temperature
coefficient (See note
(b))
1&2
15.0 50.0 15.0 50.0
UNITS
mV
ppm/°C
ELECTRICAL CHARACTERISTICS
( at Tamb =25°C and Trim pin o/c unless otherwise stated)
SYMBOL PARAMETER
MIN. TYP. MAX. UNITS
VR Output voltage
1% tolerance (A1,C1)
2% tolerance (C2)
9.70 9.80 9.90 V
9.60 9.80 10.00
⌬VTRIM
Output voltage adjustment
range
Ϯ5 %
TC⌬VTRIM Change in TCVR with output 5.0 ppm/°C/%
adjustment
IR
ton
toff
enp-p
Operating current range
Turn-on time
Turn-off time
Output voltage noise (over
the range 0.1 to 10Hz)
0.15
30
400
0.3
50
mA
µs
µV
RS Slope resistance
1.8 4.0 Ω
4-296
COMMENTS
IR=500µA
RT=100kΩ
See note (c)
RL=1kΩ
Peak to peak
measurement
IR =
0.5mA to 5mA
See note (d)
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TYPICAL CHARACTERISTICS
ZRT100
NOTES
(a) Output change with temperature (VR)
The absolute maximum difference between
the maximum output voltage and the
minimum output voltage over the specified
temperature range
⌬VR = Vmax - Vmin
(b) Output temperature coefficient (TCVR)
The ratio of the output change with
temperature to the specified temperature
range expressed in ppm/°C
TcVR
=
∆VR x 106
VR x ∆T
ppm
⁄
°C
∆T= Full temperature range
(c) Operating current (IR)
Maximum operating current must be
derated as indicated in maximum ratings.
(d) Slope resistance (RS)
The slope resistance is defined as :
RS =
changein VR
specifiedcurrentrange
∆I = 5 - 0.5 = 4.5mA (typically)
(e) Line regulation
The ratio of change in output voltage to the
change in input voltage producing it.
RS x 100
VR x Rsource
%⁄V
4-297
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Номер в каталоге | Описание | Производители |
ZRT100 | 9.8V LOW POWER PRECISION REFERENCE SOURCE | Zetex Semiconductors |
ZRT100A1 | 9.8V LOW POWER PRECISION REFERENCE SOURCE | Zetex Semiconductors |
ZRT100C1 | 9.8V LOW POWER PRECISION REFERENCE SOURCE | Zetex Semiconductors |
ZRT100C2 | 9.8V LOW POWER PRECISION REFERENCE SOURCE | Zetex Semiconductors |
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