datasheet for VRE410AS by Apex Microtechnology
VRE410
VRE410
VRE410
Precision Dual Voltage Reference
FEATURES
±10 V Output, ± 1.6 mV
Temperature Drift: 1.0 ppm/ºC
Low Noise: 6 VP-P (0.1-10Hz)
Tracking Error: 0.3 mV
Excellent Line Regulation: 6 ppm/V Typical
Surface Mount Package
APPLICATIONS
The VRE410 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 also ideal for calibrating scale factor
on high resolution A/D converters. The VRE410
offers superior performance over monolithic references.
DESCRIPTION
The VRE410 is a low cost, high precision, ±10 V reference. Available in a 14-pin SMT package, the device
is ideal for new designs that need a high performance
reference.
The device provides ultrastable ±10 V output with ±1.6
mV initial accuracy and a temperature coeficient of
1.0 ppm/°C. This improvement in accuracy is made
possible by a unique, patented multipoint laser compensation technique.
Another key feature of this reference is the 0.5 mV
tracking error between the positive and negative output voltages over the full operating temperature range.
This is extremely important in high performance systems for reducing overall system errors.
Figure 1. BLOCK DIAGRAM
SELECTION GUIDE
Model
VRE410AS
VRE410BS
VRE410JS
VRE410LS
Initial Error Temp. Coeff.
(mV)
(ppm/ºC)
±1.6
±2.0
±1.6
±2.2
www.apexanalog.com
VRE410DS
1.0
2.0
1.0
2.2
Temp. Range
(ºC)
0ºC to +70ºC
0ºC to +70ºC
-40ºC to +85ºC
-40ºC to +85ºC
Copyright © Apex Microtechnology, Inc. 2012
(All Rights Reserved)
14-pin Surface Mount
Package Style GE
DEC 20121
VRE410DS REVI
VRE410
1. CHARACTERISTICS AND SPECIFICATIONS
ELECTRICAL SPECIFICATIONS
VPS =±15V, T = +25ºC, RL = 10K
Unless Otherwise Noted.
Model
A/J
Parameter
B
L
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Units
±13.5
±15
±22
*
*
*
*
*
*
V
+70
*
*
*
*
ºC
ABSOLUTE RATINGS
Power Supply
Operating Temperature (A,B)
0
Operating Temperature (J,L)
-40
+85
*
*
*
*
ºC
Storage Temperature
-65
+150
*
*
*
*
ºC
Short Circuit Protection
Continuous
*
*
±10.0
*
*
OUTPUT VOLTAGE
VRE410
V
OUTPUT VOLTAGE ERRORS
Initial Error
(Note 1)
±1.60
Warmup Drift
±2.00
1
TMIN - TMAX
(Note 2)
Tracking Error
(Note 3)
2
1.0
±2.20
3
2.0
mV
ppm
2.2
ppm/ºC
0.5
0.7
1.0
mV
Long-Term Stability
6
*
*
ppm/1000hrs.
Noise (0.1 - 10Hz)
6
*
*
µVpp
OUTPUT CURRENT
Range
±10
*
mA
REGULATION
Line
3
*
*
ppm/V
Load
3
*
*
ppm/mA
+PS
7
*
*
mA
-PS
4
*
*
mA
POWER SUPPLY CURRENT (Note 4)
NOTES:
* Same as A/J Models.
1. The speciied values are without external trim.
2. The temperature coeficient (TC) is determined by the box method using the following formula:
T.C. =
VMAX – VMIN
x 106
VNOMINAL x (TMAX – TMIN)
3. The tracking error is the deviation between the positive and negative output over the operating temp.
range.
4. The speciied values are unloaded.
2
VRE410DS
VRE410
2. TYPICAL PERFORMANCE CURVES
2
VOUT vs. TEMPERATURE
1.5
1
Upper Limit
∆VOUT (mV)
∆VOUT (mV)
1
0
-0.5
Lower Limit
-1
0
-0.5
-1.5
0
-2
10 20 30 40 50 60 70
Temperature, °C
VRE410AS
VOUT vs. TEMPERATURE
Lower Limit
0
4
3
∆VOUT (mV)
0
-1
Lower Limit
-2
1
0
-1
-2
-3
-3
-4
-40
-4
-40
-15 10 35
60
Temperature, °C
VRE410JS
Upper Limit
2
Upper Limit
1
10 20 30 40 50 60 70
Temperature, °C
VRE410BS
VOUT vs. TEMPERATURE
3
2
∆VOUT (mV)
0.5
-1
-1.5
4
Upper Limit
1.5
0.5
-2
VOUT vs. TEMPERATURE
2
85
Lower Limit
-15 10 35
60
Temperature, °C
VRE410LS
85
POSITIVE OUTPUT (TYP)
QUIESCENT CURRENT VS. TEMP
Temperature oC
JUNCTION TEMP. RISE VS. OUTPUT CURRENT
Output Current (mA)
PSRR VS. FREQUENCY
Frequency (Hz)
NEGATIVE OUTPUT (TYP)
QUIESCENT CURRENT VS. TEMP
Temperature oC
VRE410DS
JUNCTION TEMP. RISE VS. OUTPUT CURRENT
Output Current (mA)
PSRR VS. FREQUENCY
Frequency (Hz)
3
VRE410
3. THEORY OF OPERATION
The following discussion refers to the block diagram in Figure 1. In operation, approximately 6.3 V is applied to
the noninverting input of the op amp. The voltage is ampliied by the op amp to produce a 10 V output. The gain is
determined by the networks R1 and R2: G=1 + R2/R1. The 6.3 V zener diode is used because it is the most stable
diode over time and temperature.
The zener operating current is derived from the regulated output voltage through R3. This feedback arrangement
provides a closely regulated zener current. This current determines the slope of the references’ voltage vs. temperature function. By trimming the zener current a lower drift over temperature can be achieved. But since the voltage
vs. temperature function is nonlinear this compensation technique is not well suited for wide temperature ranges.
A nonlinear compensation network of thermistors and resistors is used in the VRE series voltage references. This
proprietary network eliminates most of the nonlinearity in the voltage vs. temperature function. By then adjusting the
slope, a very stable voltage is produced over wide temperature ranges.
The VRE400 series voltage references have the ground terminal brought
out on two pins (pin 6 and 7) which are connected together internally.
This allows the user to achieve greater accuracy when using a socket.
Voltage references have a voltage drop across their power supply ground
pin due to quiescent current lowing through the contact resistance. If the
contact resistance was constant with time and temperature, this voltage
drop could be trimmed out. When the reference is plugged into a socket,
this source of error can be as high as 20 ppm. By connecting pin 7 to
the power supply ground and pin 6 to a high impedance ground point in
the measurement circuit, the error due to the contact resistance can be
eliminated. If the unit is soldered into place the contact resistance is suficiently small that it doesn’t effect performance.
PIN CONFIGURATION
N/C
1
14
N/C
VOUT
2
13
+VOUT
N/C
3
VRE410
12
N/C
- VIN
4
11
+VIN
N/C
5
TOP
VIEW
10
N/C
REF. GND
6
9
N/C
GND
7
8
N/C
-
NEED TECHNICAL HELP? CONTACT APEX SUPPORT!
For all Apex Microtechnology product questions and inquiries, call toll free 800-546-2739 in North America.
For inquiries via email, please contact [email protected]
International customers can also request support by contacting their local Apex Microtechnology Sales Representative.
To ind the one nearest to you, go to www.apexanalog.com
IMPORTANT NOTICE
Apex Microtechnology, Inc. has made every effort to insure the accuracy of the content contained in this document. However, the information is subject to change
without notice and is provided "AS IS" without warranty of any kind (expressed or implied). Apex Microtechnology reserves the right to make changes without further
notice to any speciications or products mentioned herein to improve reliability. This document is the property of Apex Microtechnology and by furnishing this information, Apex Microtechnology grants no license, expressed or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or other intellectual
property rights. Apex Microtechnology owns the copyrights associated with the information contained herein and gives consent for copies to be made of the information only for use within your organization with respect to Apex Microtechnology integrated circuits or other products of Apex Microtechnology. This consent does not
extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale.
APEX MICROTECHNOLOGY PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN PRODUCTS USED FOR
LIFE SUPPORT, AUTOMOTIVE SAFETY, SECURITY DEVICES, OR OTHER CRITICAL APPLICATIONS. PRODUCTS IN SUCH APPLICATIONS ARE UNDERSTOOD TO BE FULLY AT THE CUSTOMER OR THE CUSTOMER’S RISK.
Apex Microtechnology, Apex and Apex Precision Power are trademarks of Apex Microtechnolgy, Inc. All other corporate names noted herein may be trademarks
of their respective holders.
4
www.apexanalog.com
Copyright © Apex Microtechnology, Inc. 2012
(All Rights Reserved)
DEC
2012
VRE410DS
VRE410DS REVI
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