LINE REGULATION: 6ppm/V Typ.
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OUTPUT TRIM CAPABILITY
FIGURE 1
N/C
+V
IN
TEMP
GND
1
2
3
4
8
PIN CONFIGURATION
NOISE
REDUCTION
REF. GND
V
OUT
TRIM
VRE304
TOP
VIEW
7
6
5
DESCRIPTION
The VRE304 is a low cost, high precision 4.5V
reference. Packaged in the industry standard 8
pin DIP, the device is ideal for upgrading systems
that use lower performance references.
The device provides ultrastable +4.500V output
with 卤0.4500 mV (.01%) initial accuracy and a
temperature coefficient of 0.6 ppm/掳C.
This
improvement in accuracy is made possible by a
unique, patented multipoint laser compensation
technique developed by Thaler Corporation.
Significant improvements have been made in
other performance parameters as well, including
initial accuracy, warm-up drift, line regulation, and
long-term stability, making the VRE304 series the
most accurate reference available in the standard
8 pin DIP package.
For enhanced performance, the VRE304 has an
external trim option for users who want less than
0.01% initial error. For ultra low noise applications,
an external capacitor can be attached between the
noise reduction pin and the ground pin.
A
reference ground pin is provided to eliminate
socket contact resistance errors.
The VRE304 is recommended for use as a
reference for 14, 16, or 18 bit D/A converters
which require an external precision reference.
The device is also ideal for calibrating scale factor
on high resolution A/D converters. The VRE304
offers superior performance over monolithic
references.
SELECTION GUIDE
Initial
Error
mV
0.45
0.70
0.90
0.45
0.70
0.90
Model
VRE304A
VRE304B
VRE304C
VRE304J
VRE304K
VRE304L
Temp.
Coeff.
ppm/掳C
0.6
1.0
2.0
0.6
1.0
2.0
Temp.
Range
掳C
0掳C to +70掳C
0掳C to +70掳C
0掳C to +70掳C
-40掳C to +85掳C
-40掳C to +85掳C
-40掳C to +85掳C
For package option add D for DIP or S for Surface Mount
to end of model number.
VRE304DS REV. D MAY 2001
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2
3
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