REF5050IDG4 [BB]

Low-Noise, Very Low Drift, Precision VOLTAGE REFERENCE; 低噪声,极低漂移,高精度电压基准
REF5050IDG4
型号: REF5050IDG4
厂家: BURR-BROWN CORPORATION    BURR-BROWN CORPORATION
描述:

Low-Noise, Very Low Drift, Precision VOLTAGE REFERENCE
低噪声,极低漂移,高精度电压基准

文件: 总16页 (文件大小:469K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
REF5020, REF5025  
REF5030, REF5040  
www.ti.com  
REF5045, REF5050  
SBOS410JUNE 2007  
Low-Noise, Very Low Drift, Precision  
VOLTAGE REFERENCE  
1
FEATURES  
DESCRIPTION  
2
LOW TEMPERATURE DRIFT:  
High-Grade: 3ppm/°C (max)  
The REF50xx is a family of low-noise, low-drift, very  
high precision voltage references. These references  
are capable of both sinking and sourcing, and are  
very robust with regard to line and load changes.  
Standard-Grade: 8ppm/°C (max)  
HIGH ACCURACY:  
High-Grade: 0.05% (max)  
Excellent temperature drift (3ppm/°C) and high  
accuracy (0.05%) are achieved using proprietary  
design techniques. These features, combined with  
very-low noise make the REF50xx family ideal for use  
in high-precision data acquisition systems.  
Standard-Grade: 0.1% (max)  
LOW NOISE: 3μVPP/V  
HIGH OUTPUT CURRENT: ±10mA  
TEMPERATURE RANGE: –40°C to +125°C  
Each reference voltage is available in both standard-  
and high-grade versions. They are offered in MSOP-8  
(available Q3, 2007) and SO-8 packages, and are  
specified from –40°C to +125°C.  
APPLICATIONS  
16-BIT DATA ACQUISITION SYSTEMS  
ATE EQUIPMENT  
INDUSTRIAL PROCESS CONTROL  
MEDICAL INSTRUMENTATION  
OPTICAL CONTROL SYSTEMS  
PRECISION INSTRUMENTATION  
REF50xx Family  
MODEL  
REF5020  
REF5025  
REF5030  
REF5040  
REF5045  
REF5050  
OUTPUT VOLTAGE  
2.048V  
2.5V  
3.0V  
4.096V  
4.5V  
5.0V  
+5V  
+5V  
Input  
Signal  
0V to 4V  
R1  
50W  
DNC(1)  
NC(2)  
DNC(1)  
1
2
3
4
8
7
6
5
VDD  
OPA365  
+IN  
VIN  
TEMP  
GND  
ADS8326  
REF50xx  
C1  
1.2nF  
VOUT  
-IN  
REF  
GND  
TRIM  
SO-8, MSOP-8(3)  
REF5040  
VIN  
VOUT  
+5V  
CBYPASS  
NOTES:(1) DNC = Do not connect.  
(2) NC = No internal connection.  
(3) MSOP-8 package available Q3, 2007.  
C2  
1mF  
22mF  
GND  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
All trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2007, Texas Instruments Incorporated  
REF5020, REF5025  
REF5030, REF5040  
REF5045, REF5050  
www.ti.com  
SBOS410JUNE 2007  
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with  
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.  
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more  
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.  
PACKAGE/ORDERING INFORMATION(1)  
PRODUCT  
OUTPUT VOLTAGE  
PACKAGE-LEAD  
PACKAGE DESIGNATOR  
PACKAGE MARKING  
STANDARD GRADE (8ppm, 0.1%)  
SO-8  
MSOP-8(2)  
SO-8  
D
DGK  
D
REF5020  
R50A  
REF5020A  
REF5025A  
REF5030A  
REF5040A  
REF5045A  
2.048V  
2.5V  
REF5025  
R50B  
MSOP-8(2)  
DGK  
D
SO-8  
REF5030  
R50C  
3.0V  
MSOP-8(2)  
SO-8  
MSOP-8(2)  
DGK  
D
REF5040  
R50D  
4.096V  
4.5V  
DGK  
D
SO-8  
REF5045  
R50E  
MSOP-8(2)  
SO-8  
MSOP-8(2)  
DGK  
D
REF5050  
R50F  
REF5050A  
HIGH GRADE (3ppm, 0.05%)  
REF5020I  
5.0V  
DGK  
SO-8  
MSOP-8(2)  
SO-8  
D
DGK  
D
REF5020  
R50A  
2.048V  
2.5V  
REF5025  
R50B  
REF5025I  
REF5030I  
REF5040I  
REF5045I  
REF5050I  
MSOP-8(2)  
DGK  
D
SO-8  
REF5030  
R50C  
3.0V  
MSOP-8(2)  
SO-8  
MSOP-8(2)  
DGK  
D
REF5040  
R50D  
4.096V  
4.5V  
DGK  
D
SO-8  
REF5045  
R50E  
MSOP-8(2)  
SO-8  
MSOP-8(2)  
DGK  
D
REF5050  
R50F  
5.0V  
DGK  
(1) For the most current package and ordering information see the Package Option Addendum at the end of this document, or see the TI  
web site at www.ti.com.  
(2) MSOP-8 (DGK) package available Q3, 2007.  
ABSOLUTE MAXIMUM RATINGS(1)  
PARAMETER  
REF50xx  
+18  
UNIT  
V
Input Voltage  
Output Short-Circuit  
30  
mA  
°C  
°C  
°C  
V
Operating Temperature Range  
Storage Temperature Range  
Junction Temperature (TJ max)  
–55 to +125  
–55 to +150  
+150  
Human Body Model (HBM)  
Charged Device Model (CDM)  
3000  
ESD Rating  
1000  
V
(1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may  
degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond  
those specified is not implied.  
2
Copyright © 2007, Texas Instruments Incorporated  
Submit Documentation Feedback  
Product Folder Link(s): REF5020 REF5025 REF5030 REF5040 REF5045 REF5050  
REF5020, REF5025  
REF5030, REF5040  
REF5045, REF5050  
www.ti.com  
SBOS410JUNE 2007  
ELECTRICAL CHARACTERISTICS: PER DEVICE  
Boldface limits apply over the specified temperature range, TA = –40°C to +125°C.  
At TA = +25°C, ILOAD = 0, CL = 1μF, and VIN = (VOUT + 0.2V) to 18V, unless otherwise noted.  
PER DEVICE  
PARAMETER  
CONDITIONS  
MIN  
TYP  
MAX  
UNIT  
REF5020 (VOUT = 2.048V)(1)  
OUTPUT VOLTAGE  
Output Voltage  
VOUT  
VOUT  
VOUT  
VOUT  
VOUT  
VOUT  
2.7V < VIN < 18V  
2.048  
V
%
%
Initial Accuracy: High-Grade  
–0.05  
–0.1  
0.05  
0.1  
Standard-Grade  
NOISE  
Output Voltage Noise  
f = 0.1Hz to 10Hz  
6
μVPP  
REF5025 (VOUT = 2.5V)  
OUTPUT VOLTAGE  
Output Voltage  
2.5  
V
%
%
Initial Accuracy: High-Grade  
–0.05  
–0.1  
0.05  
0.1  
Standard-Grade  
NOISE  
Output Voltage Noise  
f = 0.1Hz to 10Hz  
7.5  
3.0  
μVPP  
REF5030 (VOUT = 3.0V)  
OUTPUT VOLTAGE  
Output Voltage  
V
%
%
Initial Accuracy: High-Grade  
–0.05  
–0.1  
0.05  
0.1  
Standard-Grade  
NOISE  
Output Voltage Noise  
f = 0.1Hz to 10Hz  
9
μVPP  
REF5040 (VOUT = 4.096V)  
OUTPUT VOLTAGE  
Output Voltage  
4.096  
V
%
%
Initial Accuracy: High-Grade  
–0.05  
–0.1  
0.05  
0.1  
Standard-Grade  
NOISE  
Output Voltage Noise  
f = 0.1Hz to 10Hz  
12  
μVPP  
REF5045 (VOUT = 4.5V)  
OUTPUT VOLTAGE  
Output Voltage  
4.5  
V
%
%
Initial Accuracy: High-Grade  
–0.05  
–0.1  
0.05  
0.1  
Standard-Grade  
NOISE  
Output Voltage Noise  
f = 0.1Hz to 10Hz  
13.5  
5.0  
μVPP  
REF5050 (VOUT = 5.0V)  
OUTPUT VOLTAGE  
Output Voltage  
V
%
%
Initial Accuracy: High-Grade  
–0.05  
–0.1  
0.05  
0.1  
Standard-Grade  
NOISE  
Output Voltage Noise  
f = 0.1Hz to 10Hz  
15  
μVPP  
(1) For VOUT 2.5V, the minimum supply voltage is 2.7V.  
3
Copyright © 2007, Texas Instruments Incorporated  
Submit Documentation Feedback  
Product Folder Link(s): REF5020 REF5025 REF5030 REF5040 REF5045 REF5050  
 
REF5020, REF5025  
REF5030, REF5040  
REF5045, REF5050  
www.ti.com  
SBOS410JUNE 2007  
ELECTRICAL CHARACTERISTICS: ALL DEVICES  
Boldface limits apply over the specified temperature range, TA = –40°C to +125°C.  
At TA = +25°C, ILOAD = 0, CL = 1μF, and VIN = (VOUT + 0.2V) to 18V, unless otherwise noted.  
REF50xx  
TYP  
PARAMETER  
OUTPUT VOLTAGE TEMPERATURE DRIFT  
Output Voltage Temperature Drift  
High-Grade  
CONDITIONS  
MIN  
MAX  
UNIT  
dVOUT/dT  
2.5  
3
3
8
ppm/°C  
ppm/°C  
Standard-Grade  
LINE REGULATION  
Line Regulation  
dVOUT/dVIN  
REF5020(1) Only  
All Other Devices  
Over Temperature  
LOAD REGULATION  
Load Regulation  
VIN = 2.7V to 18V  
0.1  
0.1  
0.2  
1
1
1
ppm/V  
ppm/V  
ppm/V  
dVOUT/dILOAD  
–10mA < ILOAD < +10mA, VIN = VOUT + 0.75V  
20  
25  
30  
ppm/mA  
Over Temperature  
SHORT-CIRCUIT CURRENT  
Short-Circuit Current  
TEMP PIN  
50  
ppm/mA  
ISC  
VOUT = 0  
mA  
Voltage Output  
At TA = +25°C  
575  
mV  
Temperature Sensitivity  
TURN-ON SETTLING TIME  
Turn-On Settling Time  
POWER SUPPLY  
Supply Voltage  
2.64  
mV/°C  
To 0.1% with CL = 1μF  
200  
0.8  
μs  
(1)  
VS  
See Note  
VOUT + 0.2(1)  
18  
1
V
Quiescent Current  
Over Temperature  
TEMPERATURE RANGE  
Specified Range  
mA  
mA  
1.2  
–40  
–55  
+125  
+125  
°C  
°C  
Operating Range  
Thermal Resistance  
MSOP-8  
θJA  
150  
150  
°C/W  
°C/W  
SO-8  
(1) For VOUT 2.5V, the minimal supply voltage is 2.7V.  
4
Copyright © 2007, Texas Instruments Incorporated  
Submit Documentation Feedback  
Product Folder Link(s): REF5020 REF5025 REF5030 REF5040 REF5045 REF5050  
REF5020, REF5025  
REF5030, REF5040  
REF5045, REF5050  
www.ti.com  
SBOS410JUNE 2007  
TYPICAL CHARACTERISTICS  
At TA = +25°C, ILOAD = 0, and VS = VOUT + 0.2V, unless otherwise noted. For VOUT 2.5V, the minimum supply voltage is 2.7V.  
TEMPERATURE DRIFT  
TEMPERATURE DRIFT  
(–40°C to +125°C)  
(0°C to +85°C)  
Drift (ppm/°C)  
Drift (ppm/°C)  
Figure 1.  
Figure 2.  
OUTPUT VOLTAGE  
INITIAL ACCURACY  
OUTPUT VOLTAGE ACCURACY  
vs TEMPERATURE  
0.05  
0.04  
0.03  
0.02  
0.01  
0
-0.01  
-0.02  
-0.03  
-0.04  
-0.05  
-50  
-25  
0
25  
50  
75  
100  
125  
Temperature (°C)  
Drift (ppm/°C)  
Figure 3.  
Figure 4.  
POWER-SUPPLY REJECTION RATIO  
vs FREQUENCY  
DROPOUT VOLTAGE vs LOAD CURRENT  
160  
140  
120  
100  
80  
0.8  
0.7  
0.6  
0.5  
0.4  
0.3  
0.2  
0.1  
0
+125°C  
+25°C  
-40°C  
60  
40  
20  
0
10  
100  
1k  
10k  
100k  
-15  
-10  
-5  
0
5
10  
15  
Frequency (Hz)  
Load Current (mA)  
Figure 5.  
Figure 6.  
5
Copyright © 2007, Texas Instruments Incorporated  
Submit Documentation Feedback  
Product Folder Link(s): REF5020 REF5025 REF5030 REF5040 REF5045 REF5050  
 
REF5020, REF5025  
REF5030, REF5040  
REF5045, REF5050  
www.ti.com  
SBOS410JUNE 2007  
TYPICAL CHARACTERISTICS (continued)  
At TA = +25°C, ILOAD = 0, and VS = VOUT + 0.2V, unless otherwise noted. For VOUT 2.5V, the minimum supply voltage is 2.7V.  
REF5025 OUTPUT VOLTAGE  
vs LOAD CURRENT  
TEMP PIN OUTPUT VOLTAGE  
vs TEMPERATURE  
2.50125  
2.50100  
2.50075  
2.50050  
2.50025  
2.50000  
2.49975  
2.49950  
2.49925  
2.49900  
2.49875  
0.9  
0.8  
0.7  
0.6  
0.5  
0.4  
0.3  
+25°C  
-40°C  
+125°C  
-10  
-5  
0
5
10  
-50  
-25  
0
25  
50  
75  
100  
125  
Load Current (mA)  
Temperature (°C)  
Figure 7.  
Figure 8.  
QUIESCENT CURRENT  
vs TEMPERATURE  
LINE REGULATION  
vs TEMPERATURE  
1050  
1000  
950  
900  
850  
800  
750  
700  
650  
600  
0.5  
0.4  
0.3  
0.2  
0.1  
0
-0.1  
-0.2  
-0.3  
-0.4  
-0.5  
-50  
-25  
0
25  
50  
75  
100  
125  
-50  
-25  
0
25  
50  
75  
100  
125  
Temperature (°C)  
Temperature (°C)  
Figure 9.  
Figure 10.  
SHORT-CIRCUIT CURRENT  
vs TEMPERATURE  
NOISE  
35  
30  
25  
20  
15  
10  
5
Sourcing  
Sinking  
0
1s/div  
-50  
-25  
0
25  
50  
75  
100  
125  
Temperature (°C)  
Figure 11.  
Figure 12.  
6
Copyright © 2007, Texas Instruments Incorporated  
Submit Documentation Feedback  
Product Folder Link(s): REF5020 REF5025 REF5030 REF5040 REF5045 REF5050  
 
REF5020, REF5025  
REF5030, REF5040  
REF5045, REF5050  
www.ti.com  
SBOS410JUNE 2007  
TYPICAL CHARACTERISTICS (continued)  
At TA = +25°C, ILOAD = 0, and VS = VOUT + 0.2V, unless otherwise noted. For VOUT 2.5V, the minimum supply voltage is 2.7V.  
STARTUP  
(REF5025, CL = 1μF)  
STARTUP  
(REF5025, CL = 10μF)  
VIN  
5V/div  
VIN  
2V/div  
1V/div  
VOUT  
VOUT  
1V/div  
40ms/div  
400ms/div  
Figure 13.  
Figure 14.  
LOAD TRANSIENT  
(CL = 1μF, IOUT = 1mA)  
LOAD TRANSIENT  
(CL = 1μF, IOUT = 10mA)  
ILOAD  
+10mA  
+1mA  
+10mA  
ILOAD  
10mA/div  
-1mA  
-1mA  
1mA/div  
5mV/div  
-10mA  
VOUT  
VOUT  
2mV/div  
20ms/div  
20ms/div  
Figure 15.  
Figure 16.  
LOAD TRANSIENT  
(CL = 10μF, IOUT = 1mA)  
LOAD TRANSIENT  
(CL = 10μF, IOUT = 10mA)  
ILOAD  
+1mA  
+10mA  
ILOAD  
-10mA  
-10mA  
10mA/div  
2mV/div  
-1mA  
-1mA  
1mA/div  
5mV/div  
VOUT  
VOUT  
100ms/div  
100ms/div  
Figure 17.  
Figure 18.  
7
Copyright © 2007, Texas Instruments Incorporated  
Submit Documentation Feedback  
Product Folder Link(s): REF5020 REF5025 REF5030 REF5040 REF5045 REF5050  
REF5020, REF5025  
REF5030, REF5040  
REF5045, REF5050  
www.ti.com  
SBOS410JUNE 2007  
TYPICAL CHARACTERISTICS (continued)  
At TA = +25°C, ILOAD = 0, and VS = VOUT + 0.2V, unless otherwise noted. For VOUT 2.5V, the minimum supply voltage is 2.7V.  
LINE TRANSIENT  
LINE TRANSIENT  
(CL = 1μF)  
(CL = 10μF)  
VIN  
500mV/div  
VIN  
500mV/div  
5mV/div  
VOUT  
5mV/div  
VOUT  
20ms/div  
100ms/div  
Figure 19.  
Figure 20.  
8
Copyright © 2007, Texas Instruments Incorporated  
Submit Documentation Feedback  
Product Folder Link(s): REF5020 REF5025 REF5030 REF5040 REF5045 REF5050  
REF5020, REF5025  
REF5030, REF5040  
REF5045, REF5050  
www.ti.com  
SBOS410JUNE 2007  
APPLICATION INFORMATION  
The REF50xx is family of low-noise, precision  
bandgap voltage references that are specifically  
designed for excellent initial voltage accuracy and  
drift. Figure 21 shows a simplified block diagram of  
the REF50xx.  
SUPPLY VOLTAGE  
The REF50xx family of voltage references features  
extremely low dropout voltage. With the exception of  
the REF5020, which has  
a
minimum supply  
requirement of 2.7V, these references can be  
operated with a supply of 200mV above the output  
voltage in an unloaded condition. For loaded  
conditions, a typical dropout voltage versus load plot  
is shown in Figure 6 of the Typical Characteristics.  
+VSUPPLY  
VIN  
REF50xx  
OUTPUT ADJUSTMENT (TRIM Pin)  
µT  
The REF50xx provides a very accurate voltage  
output. However, VOUT can be adjusted from the  
nominal value for the purpose of trimming system  
errors by configuring the TRIM pin (pin 5). The TRIM  
pin provides for adjustment of the voltage at VOUT  
over a ±15mV range. Figure 23 shows a typical circuit  
using the TRIM pin to adjust VOUT. When using this  
technique, the temperature coefficients of the  
resistors can degrade the temperature drift at the  
output.  
(10mA  
at 25°C)  
VOUT  
TEMP  
µT  
1.2V  
Bandgap  
TRIM  
60kW  
GND  
+VSUPPLY  
REF50xx  
Figure 21. REF50xx Simplified Block Diagram  
DNC  
VIN  
DNC  
NC  
VOUT  
BASIC CONNECTIONS  
TEMP  
GND  
TRIM  
10kW  
1kW  
Figure 22 shows the typical connections for the  
470W  
REF50xx.  
A
supply bypass capacitor ranging  
between 1μF to 10μF is recommended. A 1μF to  
50μF, low-ESR output capacitor (CL) must be  
connected to VOUT  
.
+VSUPPLY  
Figure 23. VOUT Adjustment Using the TRIM Pin  
TEMPERATURE DRIFT  
REF50xx  
DNC  
DNC  
VIN  
NC  
CBYPASS  
The REF50xx is designed for minimal drift error,  
which is defined as the change in output voltage over  
temperature. The drift is calculated using the box  
method, as described by the following equation:  
VOUT  
VOUT  
TEMP  
GND  
1mF to 10mF  
CL  
1mF to 50mF  
TRIM  
VOUTMAX * VOUTMIN  
6
Drift + ǒ  
Ǔ
  10 (ppm)  
VOUT   Temp Range  
Figure 22. Basic Connections  
(1)  
The REF50xx features a maximum drift coefficient of  
3ppm/°C for the high-grade version, and 8ppm/°C for  
the standard-grade.  
9
Copyright © 2007, Texas Instruments Incorporated  
Submit Documentation Feedback  
Product Folder Link(s): REF5020 REF5025 REF5030 REF5040 REF5045 REF5050  
 
 
 
REF5020, REF5025  
REF5030, REF5040  
REF5045, REF5050  
www.ti.com  
SBOS410JUNE 2007  
TEMPERATURE MONITORING  
POWER DISSIPATION  
The temperature output terminal (TEMP, pin 3)  
provides a temperature-dependent voltage output  
with approximately 60ksource impedance. As seen  
in Figure 8, the output voltage follows the nominal  
relationship:  
The REF50xx family is specified to deliver current  
loads of ±10mA over the specified input voltage  
range. The temperature of the device increases  
according to the equation:  
TJ = TA + PD × θJA  
VTEMP PIN = 509mV + 2.64 × T(°C)  
Where:  
TJ = Junction temperature (°C)  
TA = Ambient temperature (°C)  
PD = Power dissipated (W)  
This pin indicates general chip temperature, accurate  
to approximately ±15°C. Although it is not generally  
suitable for accurate temperature measurements, it  
can be used to indicate temperature changes or for  
temperature compensation of analog circuitry. A  
temperature change of 30°C corresponds to an  
approximate 79mV change in voltage at the TEMP  
pin.  
θJA  
= Junction-to-ambient thermal resistance  
(°C/W)  
The REF50xx junction temperature must not exceed  
the absolute maximum rating of +150°C.  
The TEMP pin has high output impedance (see  
Figure 21). Loading this pin with a low-impedance  
circuit induces a measurement error; however, it does  
not have any effect on VOUT accuracy. To avoid  
errors caused by low-impedance loading, buffer the  
TEMP pin output with a suitable low-temperature drift  
op amp, such as the OPA333, OPA335, or OPA376,  
as shown in Figure 24.  
NOISE PERFORMANCE  
Typical 0.1Hz to 10Hz voltage noise for each member  
of the REF50xx family is specified in the Electrical  
Characteristics: Per Device table. The noise voltage  
increases with output voltage and operating  
temperature. Additional filtering can be used to  
improve output noise levels, although care should be  
taken to ensure the output impedance does not  
degrade performance.  
+V  
REF50xx  
DNC  
VIN  
DNC  
VTEMP  
OPA(1)  
NC  
2.6mV/°C  
VOUT  
TEMP  
GND  
TRIM  
NOTE: (1) Low drift op amp, such as the OPA333, OPA335, or OPA376.  
Figure 24. Buffering the TEMP Pin Output  
10  
Copyright © 2007, Texas Instruments Incorporated  
Submit Documentation Feedback  
Product Folder Link(s): REF5020 REF5025 REF5030 REF5040 REF5045 REF5050  
 
REF5020, REF5025  
REF5030, REF5040  
REF5045, REF5050  
www.ti.com  
SBOS410JUNE 2007  
APPLICATION CIRCUITS  
DATA ACQUISITION  
NEGATIVE REFERENCE VOLTAGE  
Data acquisition systems often require stable voltage  
references to maintain accuracy. The REF50xx family  
features low noise, very low drift, and high initial  
accuracy for high-performance data converters.  
Figure 26 shows the REF5040 in a basic data  
acquisition system.  
For applications requiring a negative and positive  
reference voltage, the REF50xx and OPA735 can be  
used to provide a dual-supply reference from a 5V  
supply. Figure 25 shows the REF5025 used to  
provide a 2.5V supply reference voltage. The low drift  
performance of the REF50xx complements the low  
offset voltage and zero drift of the OPA735 to provide  
an accurate solution for split-supply applications.  
Care must be taken to match the temperature  
coefficients of R1 and R2.  
+5V  
+5V  
Input  
Signal  
0V to 4V  
R1  
50W  
VDD  
OPA365  
+IN  
ADS8326  
C1  
1.2nF  
+5V  
-IN  
REF  
GND  
REF5025  
DNC  
VIN  
DNC  
REF5040  
VIN  
VOUT  
+5V  
NC  
CBYPASS  
VOUT  
+2.5V  
TEMP  
GND  
C2  
1mF  
22mF  
1mF  
TRIM  
GND  
R1  
10kW  
R2  
10kW  
Figure 26. Basic Data Acquisition System  
+5V  
-2.5V  
OPA735  
-5V  
NOTE: Bypass capacitors not shown.  
Figure 25. The REF5025 and OPA735 Create  
Positive and Negative Reference Voltages  
11  
Copyright © 2007, Texas Instruments Incorporated  
Submit Documentation Feedback  
Product Folder Link(s): REF5020 REF5025 REF5030 REF5040 REF5045 REF5050  
 
 
PACKAGE OPTION ADDENDUM  
www.ti.com  
23-Jul-2007  
PACKAGING INFORMATION  
Orderable Device  
REF5020AID  
Status (1)  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
Package Package  
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)  
Qty  
Type  
Drawing  
SOIC  
D
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
REF5020AIDG4  
REF5020AIDR  
REF5020AIDRG4  
REF5020ID  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
REF5020IDG4  
REF5020IDR  
75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
REF5020IDRG4  
REF5025AID  
2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
REF5025AIDG4  
REF5025AIDR  
REF5025AIDRG4  
REF5025ID  
75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
REF5025IDG4  
REF5025IDR  
75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
REF5025IDRG4  
REF5030AID  
2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
REF5030AIDG4  
REF5030AIDR  
REF5030AIDRG4  
REF5030ID  
75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
REF5030IDG4  
REF5030IDR  
75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
REF5030IDRG4  
REF5040AID  
2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
Addendum-Page 1  
PACKAGE OPTION ADDENDUM  
www.ti.com  
23-Jul-2007  
Orderable Device  
REF5040AIDG4  
REF5040AIDR  
REF5040AIDRG4  
REF5040ID  
Status (1)  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
Package Package  
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)  
Qty  
Type  
Drawing  
SOIC  
D
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
SOIC  
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
REF5040IDG4  
REF5040IDR  
75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
REF5040IDRG4  
REF5045AID  
2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
REF5045AIDG4  
REF5045AIDR  
REF5045AIDRG4  
REF5045ID  
75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
REF5045IDG4  
REF5045IDR  
75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
REF5045IDRG4  
REF5050AID  
2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
REF5050AIDG4  
REF5050AIDR  
REF5050AIDRG4  
REF5050ID  
75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
REF5050IDG4  
REF5050IDR  
75 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
REF5050IDRG4  
2500 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
(1) The marketing status values are defined as follows:  
ACTIVE: Product device recommended for new designs.  
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.  
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in  
a new design.  
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.  
Addendum-Page 2  
PACKAGE OPTION ADDENDUM  
www.ti.com  
23-Jul-2007  
OBSOLETE: TI has discontinued the production of the device.  
(2)  
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check  
http://www.ti.com/productcontent for the latest availability information and additional product content details.  
TBD: The Pb-Free/Green conversion plan has not been defined.  
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements  
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered  
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.  
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and  
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS  
compatible) as defined above.  
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame  
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)  
(3)  
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder  
temperature.  
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is  
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the  
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take  
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on  
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited  
information may not be available for release.  
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI  
to Customer on an annual basis.  
Addendum-Page 3  
IMPORTANT NOTICE  
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements,  
improvements, and other changes to its products and services at any time and to discontinue any product or service without notice.  
Customers should obtain the latest relevant information before placing orders and should verify that such information is current and  
complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.  
TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s  
standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this  
warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily  
performed.  
TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and  
applications using TI components. To minimize the risks associated with customer products and applications, customers should  
provide adequate design and operating safeguards.  
TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask  
work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services  
are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such  
products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under  
the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI.  
Reproduction of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is  
accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an  
unfair and deceptive business practice. TI is not responsible or liable for such altered documentation. Information of third parties  
may be subject to additional restrictions.  
Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service  
voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business  
practice. TI is not responsible or liable for any such statements.  
TI products are not authorized for use in safety-critical applications (such as life support) where a failure of the TI product would  
reasonably be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement  
specifically governing such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications  
of their applications, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related  
requirements concerning their products and any use of TI products in such safety-critical applications, notwithstanding any  
applications-related information or support that may be provided by TI. Further, Buyers must fully indemnify TI and its  
representatives against any damages arising out of the use of TI products in such safety-critical applications.  
TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are  
specifically designated by TI as military-grade or "enhanced plastic." Only products designated by TI as military-grade meet military  
specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is  
solely at the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in  
connection with such use.  
TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products  
are designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any  
non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements.  
Following are URLs where you can obtain information on other Texas Instruments products and application solutions:  
Products  
Amplifiers  
Data Converters  
DSP  
Applications  
Audio  
amplifier.ti.com  
dataconverter.ti.com  
dsp.ti.com  
www.ti.com/audio  
Automotive  
Broadband  
Digital Control  
Military  
www.ti.com/automotive  
www.ti.com/broadband  
www.ti.com/digitalcontrol  
www.ti.com/military  
Interface  
interface.ti.com  
logic.ti.com  
Logic  
Power Mgmt  
Microcontrollers  
RFID  
power.ti.com  
Optical Networking  
Security  
www.ti.com/opticalnetwork  
www.ti.com/security  
www.ti.com/telephony  
www.ti.com/video  
microcontroller.ti.com  
www.ti-rfid.com  
www.ti.com/lpw  
Telephony  
Low Power  
Wireless  
Video & Imaging  
Wireless  
www.ti.com/wireless  
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265  
Copyright © 2007, Texas Instruments Incorporated  

相关型号:

REF5050IDGK

Low-Noise, Very Low Drift, Precision OLTAGE REFERENCE
TI

REF5050IDGKR

Low-Noise, Very Low Drift Precision
TI

REF5050IDGKT

Low-Noise, Very Low Drift Precision
TI

REF5050IDR

Low-Noise, Very Low Drift, Precision VOLTAGE REFERENCE
BB

REF5050IDR

Low-Noise, Very Low Drift, Precision VOLTAGE REFERENCE
TI

REF5050IDRG4

Low-Noise, Very Low Drift, Precision VOLTAGE REFERENCE
BB

REF5050IDRG4

Low-Noise, Very Low Drift, Precision VOLTAGE REFERENCE
TI

REF5050MDREP

LOW-NOISE, VERY LOW DRIFT, PRECISION VOLTAGE REFERENCE
TI

REF50D

5V MICROPOWER PRECISION REFERENCE
ETC

REF50Z

5V MICROPOWER PRECISION REFERENCE
ETC

REF6025

具有集成缓冲器和使能引脚的 2.5V、5ppm/°C 高精度电压基准
TI

REF6025IDGKR

具有集成缓冲器和使能引脚的 2.5V、5ppm/°C 高精度电压基准 | DGK | 8 | -40 to 125
TI