THALER VRE402LS, VRE402LD, VRE402KS, VRE402KD, VRE402JS Datasheet

VRE402
Precision
Dual Reference

DESCRIPTION

FEATURES

The VRE402 is a low cost, high precision, ±2.5V
reference. Packaged in 14 pin DIP or SMT
packages, the device is ideal for new designs that
need a high performance reference.

The device provides ultrastable ±2.500V output
with ±0.250 mV (.01%) initial accuracy and a
temperature coefficient of 0.6 ppm/°C. This
improvement in accuracy is made possible by a
unique, patented multipoint laser compensation
technique developed by Thaler Corporation.

Another key feature of this reference is the 0.3 mV
maximum tracking error between the positive and
negative output voltages over the operating
temperature range. This is extremely important in
high performance systems for reducing overall
system errors.

For designs which use the DIP package in a
socket, there is a reference ground pin to
eliminate reference ground errors.

The VRE402 is recommended for use as a
reference for high precision A/D and D/A
converters which require an external precision
reference. The device is ideal for calibrating
scale factor on high resolution A/D converters.
The VRE402 offers superior performance over
monolithic references.

• ±2.500 V OUTPUT ± 0.250 mV (.01%)

• TEMPERATURE DRIFT: 0.6 ppm/°C

• LOW NOISE: 1.5µVpp (0.1-10Hz)

• TRACKING ERROR: 0.2 mV max.

• EXCELLENT LINE REGULATION: 6ppm/V Typ.

• SURFACE MOUNT AND DIP PACKAGES

FIGURE 1

VRE402DS REV. A MAY 1996

SELECTION GUIDE

Model

Temp.
Range

°C

Temp.

Coeff.

ppm/

°C

VRE402A 0.25 0.6 0°C to +70°C
VRE402B 0.40 1.0 0°C to +70°C
VRE402C 0.50 2.0 0°C to +70°C
VRE402J 0.25 0.6 -40°C to +85°C
VRE402K 0.40 1.0 -40°C to +85°C
VRE402L 0.50 2.0 -40°C to +85°C

For package option add D for DIP or S for Surface
Mount to end of model number.

Initial

Error

mV

THALER CORPORATION • 2015 N. FORBES BOULEVARD • TUCSON, AZ. 85745 • [phone]

11

12

13

14

VRE402

TOP

VIEW

1
2
3
4

N/C

+V

IN

GND

REF. GND

+V

OUT

PIN CONFIGURATION

5

6

7

10

9
8

- V

OUT

N/C

- V

IN

N/C

N/C

N/C

N/C

N/C

N/C

MODEL A/J B/K C/L
PARAMETER MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS

ABSOLUTE RATINGS

Power Supply ±13.5 ±15 ±22 * * * * * * V
Operating Temp. (A,B,C) 0 +70 * * * * °C
Operating Temp. (J,K,L) -40 +85 * * * * °C
Storage Temperature -65 +150 * * * * °C
Short Circuit Protection Continuous * *

OUTPUT VOLTAGE

VRE402 ±2.5 * * V

OUTPUT VOLTAGE ERRORS

Initial Error 0.25 0.40 0.50 mV
Warmup Drift 1 2 3 ppm
T

min

- T

max

0.6 1.0 2.0 ppm/ °C
Tracking Error 0.2 0.3 0.4 mV
Long-Term Stability 6 * * ppm/1000hrs
Noise (.1-10Hz) 1.5 * * µVpp

OUTPUT CURRENT

Range ±10 * * mA

REGULATION

Line 3 10 * * * * ppm/V
Load 3 * * ppm/mA

POWER SUPPLY CURRENTS

+PS 7 9 * * * * mA

-PS 4 6 * * * * mA

VRE402

NOTES: *Same as A/J Models.

1. The specified values are without external trim.

2. The temperature coefficient (tc) is determined by the
box method using the following formula:

V

max

- V

min

tc = x 10

6

V

nominal

x (T

max-Tmin

)

3. The tracking error is the deviation between the
positive and negative output over the operating temp.
range.

(1)

(4)

(2)

(3)

VRE402DS REV. A MAY 1996

Vps =±15V, T = 25°C, RL = 10KΩ unless otherwise noted.

ELECTRICAL SPECIFICATIONS

4. The specified values are unloaded.