THALER VRE404LS, VRE404KS, VRE404LD, VRE404KD, VRE404JS Datasheet

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VRE404 Precision Dual Reference
DESCRIPTION
FEATURES
The VRE404 is a low cost, high precision, ±4.5V 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 ±4.500V output with ±0.450 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 VRE404 is recommended for use as a reference for high precision D/A and A/D converters which require an external precision reference. The device is ideal for calibrating scale factor on high resolution A/D converters. The VRE404 offers superior performance over monolithic references.
• ±4.500 V OUTPUT ± 0.400 mV (.01%)
• TEMPERATURE DRIFT: 0.6 ppm/°C
• LOW NOISE: 3µVpp (0.1-10Hz)
• TRACKING ERROR: 0.3 mV max.
• EXCELLENT LINE REGULATION: 6ppm/V Typ.
• SURFACE MOUNT AND DIP PACKAGES
FIGURE 1
VRE404DS REV. A MAY 1996
SELECTION GUIDE
Model
Temp. Range
°C
Temp.
Coeff.
ppm/
°C
VRE404A 0.45 0.6 0°C to +70°C VRE404B 0.70 1.0 0°C to +70°C VRE404C 0.90 2.0 0°C to +70°C VRE404J 0.45 0.6 -40°C to +85°C VRE404K 0.70 1.0 -40°C to +85°C VRE404L 0.90 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 • (520) 882-4000
11
12
13
14
VRE404
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
VRE404 ±4.5 * * V
OUTPUT VOLTAGE ERRORS
Initial Error 0.45 0.70 0.90 mV Warmup Drift 1 2 3 ppm T
min
- T
max
0.6 1.0 2.0 ppm/ °C Tracking Error 0.3 0.4 0.5 mV Long-Term Stability 6 * * ppm/1000hrs Noise (.1-10Hz) 3 * * 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
VRE404
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)
VRE404DS REV. A MAY 1996
Vps =±15V, T = 25°C, RL = 10K unless otherwise noted.
ELECTRICAL SPECIFICATIONS
4. The specified values are unloaded.
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