vre127 ETC-unknow, vre127 Datasheet

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vre127

Manufacturer Part Number
vre127
Description
Precision High Temperature Reference Supplies
Manufacturer
ETC-unknow
Datasheet
RHOPOINT COMPONENTS LTD., Holland Road,Hurst Green, Oxted, Surrey, RH8 0AX. Tel: +44 (0)1883 717988
Corporation's patented multi-point compensation technique. The stability of the VRE125 series is enhanced
by using a zener diode instead of a bandgap reference, which is typically used in 5V references. Zener
diodes have better long term stability and don't suffer the significant shifts caused by temperature cycling
that bandgap references do.
Other performance parameters, such as warm-up drift and long term stability are better than competitive
models.
Superior stability, accuracy, and quality make these references ideal for high temperature applications such
as A/D and D/A converter references.
VRE125 series references are designed to
operate over an extremely wide temperature
range (-55°C to +200°C) and still provide
excellent accuracy. The VRE125 provides a +5V
output and the VRE127 provides a ±5V output.
All types are available in commercial (C suffix)
and military (M suffix) models. They are
hermetically sealed and are screened for high
reliability and quality. Two accuracy grades
(standard and A) are available in both models.
The adjacent selector guide shows the limits of
the
VRE125/127 series references.
The accuracy of the VRE125/127 series over
temperature is achieved by using Thaler
DESCRIPTION
FEATURES
WIDE OPERATING RANGE: -55°C to +200°C
VERY HIGH ACCURACY: 5.000 V ±0.4 mV
EXTREMELY LOW DRIFT: 0.6 mV (-55°C to +150°C)
EXCELLENT STABILITY: 6 ppm / 1000Hrs.
HERMETIC 14-PIN DIP
EXCELLENT LINE REGULATION: 6 ppm / V Typ.
most
important
parameters
2.0 mV (-55°C to +200°C)
VRE125/127
Precision High Temperature
Reference Supplies
of
the
VRE125C
VRE125CA
VRE125M
VRE125MA
VRE127C
VRE127CA
VRE127M
VRE127MA
Type
APPLICATIONS
THRESHOLD VOLTAGE
MEASUREMENT SYSTEMS
PRECISION A/D and D/A CONVERTERS
ACCURATE COMPARATOR
HIGH RESOLUTION SERVO SYSTEMS
HIGH TEMPERATURE TEST and
TRANSDUCER EXCITATION
GEOLOGICAL EQUIPMENT
Output
+5V
+5V
+5V
+5V
±5V
±5V
±5V
±5V
SELECTION GUIDE
to +150°C)
Max. Volt
Deviation
±0.9mV
±0.6mV
±0.9mV
±0.6mV
±0.9mV
±0.6mV
±0.9mV
±0.6mV
(-55°C
to +200°C)
Max. Volt
Deviation
±3.0mV
±2.0mV
±3.0mV
±2.0mV
±3.0mV
±2.0mV
±3.0mV
±2.0mV
(150°C
VRE125DS REV. C SEPT 1994
±0.8mV
±0.4mV
±0.8mV
±0.4mV
±0.8mV
±0.4mV
±0.8mV
±0.4mV
(Max)
Initial
Error

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vre127 Summary of contents

Page 1

... The VRE125 provides a +5V output and the VRE127 provides a ±5V output. All types are available in commercial (C suffix) and military (M suffix) models. They are hermetically sealed and are screened for high reliability and quality ...

Page 2

... OUTPUT ADJUSTMENT Range Temperature Coefficient POWER SUPPLY CURRENTS VRE125 +PS VRE127 +PS VRE127 -PS NOTES: *Same as C Models. 1.Using the box method, the specified value is the maximum deviation from the output voltage at 25°C over the specified operating temperature range. 2.The specified values are unloaded. ...

Page 3

... C vs. TEMPERATURE V vs. TEMPERATURE OUT Temperature o C Temperature VRE125/127CA VRE125/127M VRE125 JUNCTION TEMP. RISE VS. OUTPUT CURRENT Output Current (mA) VRE127 POSITIVE OUTPUT JUNCTION TEMP. RISE VS. OUTPUT CURRENT Output Current (mA) NEGATIVE OUTPUT JUNCTION TEMP. RISE VS. OUTPUT CURRENT Output Current (mA) V vs. TEMPERATURE OUT o Temperature C o ...

Page 4

... APPLICATION INFORMATION Figure 1 shows the proper connection of the VRE125 series voltage reference with the optional trim resistors. When trimming the VRE127, the positive voltage should be trimmed first since the negative voltage tracks the positive side. Pay careful attention to the circuit layout to avoid noise pickup and voltage drops in the lines ...

Page 5

... FIGURE 1 3. Optional Fine Adjust for approximately ±10mV. VRE127 center tap connects to -PS. 4. Pin 6 is internally connected to Pin 7 and can be used as Ref. GND. TOP VIEW VRE125 NC NC REF. GND GND 14-PIN HYBRID PACKAGE EXTERNAL CONNECTIONS PIN CONFIGURATION FINE ADJ. +5V FINE ADJ. ...

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