VRE3025 ETC1 [List of Unclassifed Manufacturers], VRE3025 Datasheet

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VRE3025

Manufacturer Part Number
VRE3025
Description
Low Cost Precision Reference
Manufacturer
ETC1 [List of Unclassifed Manufacturers]
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
VRE3025CS
Manufacturer:
CIRRUS
Quantity:
42
Part Number:
VRE3025LS
Manufacturer:
ON
Quantity:
1 000
FEATURES
• 2.500 V Output ± 0.250 mV (.01%)
• Temperature Drift: 0.6 ppm/°C
• Low Noise: 1.5
• Low Thermal Hysteresis: 1 ppm Typ.
• ±15mA Output Source and Sink Current
• Excellent Line Regulation: 5 ppm/V Typ.
• Optional Noise Reduction and Voltage Trim
• Industry Standard Pinout
DESCRIPTION
The VRE3025 is a low cost, high precision 2.5V
reference that operates from +10V. The device
features a buried zener for low noise and excellent
long term stability. Packaged in an 8 pin DIP and
SMT, the device is ideal for high resolution data
conversion systems.
The device provides ultrastable +2.500V output
with ±0.2500 mV (.01%) initial accuracy and a
temperature coefficient of 0.6 ppm/°C.
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 VRE3025 series
the most accurate reference available.
For enhanced performance, the VRE3025 has an
external trim option for users who want less than
0.01%
applications,
attached between the noise reduction pin and the
ground pin.
THALER CORPORATION • 2015 N. FORBES BOULEVARD • TUCSON, AZ. 85745 • (520) 882-4000
initial
an
error.
µ
V
external
p-p
(0.1Hz-10Hz)
For
capacitor
VRE3025
Low Cost
Precision Reference
ultra
low
can
noise
This
be
For package option add D for DIP or S for Surface Mount
to end of model number.
The VRE3025 is recommended for use as a
reference for 14, 16, or 18 bit data converters
which require an external precision reference.
The device is also ideal for calibrating scale factor
on high resolution data converters. The VRE3025
offers superior performance over monolithic
references.
VRE3025A
VRE3025B
VRE3025C
VRE3025J
VRE3025K
VRE3025L
Model
N/C
+V
GND
N/C
PIN CONFIGURATION
IN
3
4
1
2
SELECTION GUIDE
Initial
0.250
0.375
0.500
0.250
0.375
0.500
Error
mV
VRE3025
FIGURE 1
VIEW
TOP
ppm/°C
Temp.
Coeff.
0.6
1.0
2.0
0.6
1.0
2.0
8
7
6
5
NOISE
REDUCTION
N/C
TRIM
V
OUT
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
Range °C
VRE3025DS REV.D JULY 2000
Temp.

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VRE3025 Summary of contents

Page 1

... Optional Noise Reduction and Voltage Trim • Industry Standard Pinout DESCRIPTION The VRE3025 is a low cost, high precision 2.5V reference that operates from +10V. The device features a buried zener for low noise and excellent long term stability. Packaged pin DIP and SMT, the device is ideal for high resolution data conversion systems ...

Page 2

... IN = +70°C)…….…...300mW A MIN TYP MAX 8 36 2.4998 2.5000 2.5003 2.4996 2.5000 2.5004 2.4995 2.5000 2.5005 0.3 0.6 0.5 1.0 1.0 2.0 ±2.5 2 1.5 1.5 3 3.5 4 VRE3025DS REV.D JULY 2000 UNITS V V ppm/° Vp-p V RMS ppm ppm/ 1khrs mA ppm/ mA ppm/V ...

Page 3

... QUIESCENT CURRENT VS. TEMP 8.0 6.0 4.0 2 100 Temperature ( vs. TEMPERATURE OUT 1.00 0.75 Upper Limit 0.50 0.25 0 -0.25 -0.50 Lower Limit -0.75 -1. Temperature ( o C) VRE3025C V vs. TEMPERATURE OUT 2.0 1.5 Upper Limit 1.0 0.5 0 -0.5 -1.0 Lower Limit -1.5 -2.0 75 100 -50 - Temperature ( o C) VRE3025L OUTPUT IMPEDIANCE VS. FREQUENCY Frequency (Hz) VRE3025DS REV.D JULY 2000 ...

Page 4

... I (mA) out 0.1Hz to 10Hz Noise 1 Sec/Div TURN-ON AND TURN-OFF TRANSIENT RESPONSE +10V s/div A: Vin, 10V/div B: Vout, 1V/div CHANGE IN OUTPUT VOLTAGE VS. INPUT VOLTAGE -10 - (V) in VRE3025DS REV.D JULY 2000 ...

Page 5

... External trim input. Leave open if not used. 6 OUT Voltage reference output 8 NR Noise Reduction BASIC CIRCUIT CONNECTION Figure 3 shows the proper connection of the VRE3025 voltage reference with the optional trim resistor for initial error and optional capacitor for noise reduction. 2 Optional Noise Reduction Capacitor + 6 ...

Page 6

... TEMPERATURE PERFORMANCE The VRE3025 is designed for applications where the initial error at room temperature temperature are important to the user. instrument manufacturers, a voltage reference with a temperature coefficient less than 1ppm/ C makes it possible to not have to perform a system temperature calibration, a slow and costly process. Of the three TC specification methods (slope, butterfly, and box), the box method is used commonly used ...

Page 7

... INCHES MIN MAX DIM MIN MAX 2.794 3.048 D1 .372 .380 2.413 2.667 E .425 .435 0.533 0.686 E1 .397 .403 1.397 1.651 E2 .264 .270 0.305 0.508 P .085 .095 0.508 1.016 S .045 .055 10.03 10. MILLIMETER MIN MAX 9.45 9.65 10.80 11.05 10.08 10.24 6.71 6.86 2.16 2.41 1.14 1. VRE3025DS REV.D JULY 2000 ...

Page 8

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