VRE310BS [ETC]

Analog IC ; 模拟IC\n
VRE310BS
元器件型号: VRE310BS
生产厂家: ETC    ETC
描述和应用:

Analog IC
模拟IC\n

模拟IC光电二极管
PDF文件: 总5页 (文件大小:421K)
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型号参数:VRE310BS参数
是否Rohs认证 符合
生命周期Obsolete
包装说明SURFACE MOUNT PACKAGE-8
Reach Compliance Codeunknown
风险等级5.75
模拟集成电路 - 其他类型THREE TERMINAL VOLTAGE REFERENCE
JESD-30 代码R-PDSO-X8
功能数量1
输出次数1
端子数量8
最高工作温度85 °C
最低工作温度-40 °C
标称输出电压10 V
封装主体材料PLASTIC/EPOXY
封装形状RECTANGULAR
封装形式SMALL OUTLINE
认证状态Not Qualified
最大供电电流 (Isup)7 mA
表面贴装YES
最大电压温度系数1 ppm/ °C
温度等级INDUSTRIAL
端子形式UNSPECIFIED
端子位置DUAL
微调/可调输出YES
Base Number Matches1
MAX34334CSE前5页PDF页面详情预览
VRE310
Low Cost
Precision Reference
THALER CORPORATION • 2015 N. FORBES BOULEVARD • TUCSON, AZ. 85745 • (520) 882-4000
FEATURES
10.000 V OUTPUT ± 1.000 mV (.01%)
TEMPERATURE DRIFT: 0.6 ppm/°C
LOW NOISE: 6
µ
V
p-p
(0.1-10Hz)
INDUSTRY STD PINOUT- 8 PIN DIP OR
SURFACE MOUNT PACKAGE
•EXCELLENT
LINE REGULATION: 6ppm/V Typ.
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
VRE310
TOP
VIEW
7
6
5
DESCRIPTION
The VRE310 is a low cost, high precision 10.0V
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 +10.000V output
with ±1.000 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.
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 VRE310 series the
most accurate reference available in the standard
8 pin DIP package.
For enhanced performance, the VRE310 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 VRE310 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 VRE310
offers superior performance over monolithic
references.
SELECTION GUIDE
Initial
Error
mV
1.0
1.6
2.0
1.0
1.6
2.0
Model
VRE310A
VRE310B
VRE310C
VRE310J
VRE310K
VRE310L
Temp.
Coeff.
ppm/°C
0.6
1.0
2.0
0.6
1.0
2.0
Temp.
Range
°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
For package option add D for DIP or S for Surface Mount
to end of model number.
VRE310DS REV. D MAY 2001
ELECTRICAL SPECIFICATIONS
Vps =+15V, T = 25°C, RL = 10KΩ unless otherwise noted.
VRE310
B/K
MAX
MIN
TYP
MAX
MIN
MODEL
PARAMETER
ABSOLUTE RATINGS
Power Supply
Operating Temp. (
A,B,C
)
Operating Temp. (
J,K,L
)
Storage Temperature
Short Circuit Protection
OUTPUT VOLTAGE
VRE310
(1)
Temp. Sensor Voltage
OUTPUT VOLTAGE ERRORS
Initial Error
Warmup Drift
T
min
- T
max (3)
Long-Term Stability
Noise (.1-10Hz)
(4)
OUTPUT CURRENT
Range
REGULATION
Line
Load
OUTPUT ADJUSTMENT
Range
POWER SUPPLY CURRENTS
VRE310 +PS
NOTES:
*Same as A/J Models.
(5)
(2)
A/J
MIN
TYP
C/L
TYP
MAX
UNITS
+13.5
0
-40
-65
+22
+70
+85
+150
Continuous
+15
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
V
°C
°C
°C
*
*
10.000
630
*
*
*
*
V
mV
1.00
1
0.6
6
6
*
*
2
1.60
3
1.0
*
*
2.00
2.0
mV
ppm
ppm/°C
ppm/1000hrs
µVpp
±10
*
*
mA
3
3
10
*
*
*
*
*
*
ppm/V
ppm/mA
20
*
*
mV
5
7
*
*
*
*
mA
1. The temp. reference TC is 2.1mV/°C
2. The specified values are without external trim.
3. The temperature coefficient is determined by the box
method using the following formula:
V
max
- V
min
T.C. =
V
nominal
x (T
max
-T
min
)
x 10
6
4. The specified values are without the external
noise reduction capacitor.
5. The specified values are unloaded.
VRE310DS REV. D MAY 2001
TYPICAL PERFORMANCE CURVES
V
OUT
vs. TEMPERATURE
V
OUT
vs. TEMPERATURE
V
OUT
vs. TEMPERATURE
Temperature
o
C
VRE310A
Temperature
o
C
VRE310B
Temperature
o
C
VRE310C
V
OUT
vs. TEMPERATURE
V
OUT
vs. TEMPERATURE
V
OUT
vs. TEMPERATURE
Temperature
o
C
VRE310J
Temperature
o
C
VRE310K
Temperature
o
C
VRE310L
QUIESCENT CURRENT VS. TEMP
JUNCTION TEMP. RISE VS. OUTPUT CURRENT
PSRR VS. FREQUENCY
Temperature
o
C
Output Current (mA)
Frequency (Hz)
VRE310DS REV. D MAY 2001
DISCUSSION OF PERFORMANCE
THEORY OF OPERATION
The following discussion refers to the schematic in
figure 2 below. In operation, approximately 6.3 volts is
applied to the noninverting input of the op amp. The
voltage is amplified by the op amp to produce a 10.000V
output. The gain is determined by the networks R1 and
R2: G=1 + R2/R1. The 6.3V 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.
Thaler Corporation has developed a nonlinear
compensation network of thermistors and resistors that 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, Thaler Corporation produces a very stable
voltage over wide temperature ranges.
This network is less than 2% of the overall network
resistance so it has a negligible effect on long term
stability. By using highly stable resistors in our network,
we produce a voltage reference that also has very good
long term stability
Figure 3 shows the proper connection of the VRE310
series voltage references with the optional trim resistor.
The VRE310 reference has the ground terminal brought
out on two pins (pin 4 and pin 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 flowing 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 20ppm. By connecting pin 4 to
the power supply ground and pin 7 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 sufficiently
small that it does not effect performance. Pay careful
attention to the circuit layout to avoid noise pickup and
voltage drops in the lines.
VRE310
FIGURE 2
EXTERNAL CONNECTIONS
+ V
IN
2
8
V
TEMP OUT
3
6
+ V
OUT
10k
OPTIONAL
FINE TRIM
ADJUSTMENT
OPTIONAL
NOISE REDUCTION
CAPACITOR
VRE310
C
N
1µF
7
4
5
FIGURE 3
REF. GND
VRE310DS REV. D MAY 2001
FIGURE 3
MECHANICAL
D
D1
D2
INCHES
DIM
A
B
B1
MIN
.115
.098
.046
.107
.009
.052
.397
.372
MAX
.125
.102
.051
.113
.012
.058
.403
.380
MILLIMETER
MIN
2.92
2.48
1.14
2.71
0.22
1.32
10.0
9.44
MAX
3.17
2.59
1.29
2.89
0.30
1.47
10.2
9.65
DIM
D2
E
E1
E2
P
Q
S
INCHES
MIN
.018
.507
.397
.264
.085
.020
.045
MAX
.023
.513
.403
.270
.095
.030
.055
MILLIMETER
MIN
0.46
12.8
10.0
6.70
2.15
.508
1.14
MAX
0.58
13.0
10.2
6.85
2.41
.762
1.39
E2
E1
E
C
C1
C2
D
PIN 1 IDENTIFIER
D1
A
Q
BASE
SEATING
E1
P
C1
C2
C
B
B1
FIGURE 4
S
INCHES
DIM
A
B
B1
B2
C
D
D1
MIN
.115
.018
.046
.098
.009
.397
.372
MAX
.125
.022
.051
.102
.012
.403
.380
MILLIMETER
MIN
2.92
.457
1.14
2.48
0.22
10.0
9.44
MAX
3.17
.558
1.29
2.59
0.30
10.2
9.65
DIM
E
E1
G1
L
P
Q
S
INCHES
MIN
.397
.264
.290
.195
.085
.055
.045
MAX
.403
.270
.310
.215
.095
.065
.055
MILLIMETER
MIN
10.0
6.70
7.36
4.95
2.15
1.39
1.14
MAX
10.2
6.85
7.87
5.46
2.41
1.65
1.39
VRE310DS REV. D MAY 2001
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