range previously unattainable in a monolithic op amp.
Using a de-compensated voltage feedback architec-
ture with two internal gain stages, the OPA643 achieves
exceptionally low harmonic distortion over a wide
frequency range. The "classic" differential input pro-
vides all the familiar benefits of precision op amps,
such as bias current cancellation and very low invert-
ing current noise compared with wideband current
feedback op amps. High slew rate and open-loop gain,
along with low input noise and high output current
drive make the OPA643 ideal for very high dynamic
range requirements.
The high gain bandwidth product for the gain
≥
3
stable OPA643 makes it particularly suitable for
wideband transimpedance amplifiers and moderate gain
IF amplifier applications. External compensation
techniques may be used to apply the OPA643 at low
gains giving exceptionally low distortion and frequency
response flatness. Where unity gain stability with
comparable distortion performance is required, consider
the OPA642.
+5V
5kΩ
REFT
0.1µF
+5V
ADS805
Low Gain
Compensation
0.1µF
280Ω
2Vp-p
0.1µF
50Ω
47pF
–5V
806Ω
2.7pF
14pF
OPA643
Analog
Input
12-Bit
20MSPS
Measured
80dB SFDR
50Ω
Source
1Vp-p
10MHz
56.9Ω
402Ω
5kΩ
REFB
0.1µF
High Dynamic Range 20MSPS Digitizer
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111
NOTE: (1) Packages must be derated based on specified
θ
must be observed.
JA
.
PIN CONFIGURATION
Top View
NC
Inverting Input
Non-Inverting Input
–V
S1
1
2
3
4
8
7
6
5
DIP/SO-8
+V
S2(1)
+V
S1
Output
–V
S2(1)
Maximum T
J
ELECTROSTATIC
DISCHARGE SENSITIVITY
Electrostatic discharge can cause damage ranging from per-
formance degradation to complete device failure. Burr-Brown
Corporation recommends that all integrated circuits be handled
and stored using appropriate ESD protection methods.
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 published speci-
fications.
SOT23-5
Output
1
5
+V
S
–V
S
Non-Inverting Input
2
3
4
Inverting Input
NOTE: (1) Making use of all four power supply pins is highly recommended,
although not required. Using these four pins, instead of just pins 4 and 7, will
lower the power supply impedance improving distortion.
PACKAGE/ORDERING INFORMATION
PACKAGE
DRAWING
NUMBER
(1)
182
182
331
331
006
006
TEMPERATURE
RANGE
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
PACKAGE
MARKING
(2)
OPA643U
OPA643UB
A43
A43B
OPA643P
OPA643PB
ORDERING
NUMBER
(3)
OPA643U
OPA643UB
OPA643N-250
OPA643N-3k
OPA643NB-250
OPA643NB-3k
OPA643P
OPA643PB
PRODUCT
OPA643U
OPA643UB
OPA643N
OPA643NB
OPA643P
OPA643PB
PACKAGE
SO-8 Surface Mount
SO-8 Surface Mount
5-pin SOT23-5
5-pin SOT23-5
8-Pin Plastic DIP
8-Pin Plastic DIP
NOTES: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. (2) The “B” grade of the SO-8 and
DIP packages will be marked with a “B” by pin 8. The “B” grade of the SOT23-5 will be marked with a “B” near pins 3 and 4. (3) The SOT23-5 is only available on a 7"
tape and reel (e.g. ordering 250 pieces of “OPA643N-250” will get a single 250 piece tape and reel. Ordering 3000 pieces of “OPA643N-3k” will get a single 3000 piece
tape and reel). Please refer to Appendix B of Burr-Brown IC Data Book for detailed Tape and Reel Mechanical information.
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
Here are some questions about embedded development projects. Welcome to speak freely and share your scores! About the project "Embedded Chip Application Operating System Software Solution" 1. Project ...
[i=s] This post was last edited by qwqwqw2088 on 2014-8-14 08:46 [/i] [align=left][color=#000000] When choosing a DC-DC power module, we have many choices. In addition to the basic voltage conversion ...
Our products use domestic Zigbee modules, and we are now exporting them to Japan. I would like to ask if we need to obtain any certification for the use of wireless modules in Japan?...
I want to add code to the bootloader to detect the pin level. If the level is low, the CPU enters super sleep mode. This will achieve "disabling the board from automatically starting up when powered o...
[size=5] What is the difference between using gdb directly to debug a program and using gdb+gdbserver to debug a program remotely? What are the advantages and disadvantages? [/size] [size=5] Can someo...
Teclast x19+MP3, when connected to the computer, it shows that the USB is connected, and when the removable disk is opened, it shows that please insert the disk into the drive. It also does not work w...
On August 23rd, Geely's subsidiary, Jiyao Tongxing, announced it has the industry's largest advanced production capacity for tandao
batteries
, with eight production bases across China. Jiy...[Details]
When you are happily watching NBA or football, your wife asks you to turn off the lights in the bedroom. Would you be depressed? Of course, unless you are not afraid of your wife.
Now you are ...[Details]
To understand why car engines need gearboxes, we must first understand the characteristics of different types of engines. An engine refers to a machine that can convert a form of energy into kineti...[Details]
Based on a survey of more than ten intelligent robot companies, this article sorts out and analyzes the current development status of the intelligent industry and the challenges and differences it ...[Details]
Coal mines typically contain gas and coal dust. When gas and coal dust reach a certain concentration, they can cause explosions. Electrical equipment generates arcs during normal operation or durin...[Details]
Magna's integrated in-cabin perception system fuses vision and millimeter-wave radar data to detect the presence of passengers, identify stranded children, monitor driver fatigue and vital signs, a...[Details]
Bosch has released a new SoC series to support L2+ advanced driver assistance functions. The chip integrates high resolution and long-range detection capabilities, and has built-in support for neur...[Details]
Shenzhen Baowei Power Supply high frequency pure sine wave power, communication inverter power supply has two communication interfaces, RS232 and R485 interfaces, their functions and characteristic...[Details]
The range of an electric vehicle is crucial to the driving experience, and range anxiety is a common headache when driving an electric vehicle. Although the latest electric vehicles can achieve a r...[Details]
Tires are a very important component for cars. They are related to the driving experience of the vehicle. We are almost inseparable from cars in our daily lives. For tires, according to the role of...[Details]
Summer is the peak season for buying and using air conditioners. Do you pay attention to the energy efficiency of your air conditioner? Did you buy a DC inverter air conditioner? Do you know the re...[Details]
The fracture mechanism is stress concentration, which typically occurs at the capacitor lead pins or pad connection points, as shown in the figure. Under vibration, the capacitor lead pins and pad ...[Details]
Batteries are a core component of new energy vehicles, accounting for over 40% of the total cost. This is also the area where automakers are most willing to tamper with costs. Since 2021, domestic ...[Details]
For the average person, an electricity meter is a monthly bill. For beginners, it's a collection of components and parts. For experienced meter engineers, however, it's a complex and complex proces...[Details]
As a core component of electric vehicles, power batteries, like batteries for other electronic products, inevitably experience degradation after a certain period of use due to their characteristics...[Details]
Embedded System
京公网安备 11010802033920号
EEWORLD
