*Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those listed in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
REV. C
–3–
AD7892
TIMING CHARACTERISTICS
1, 2
(V
Parameter
t
CONV
t
ACQ
Parallel Interface
t
1
t
2
t
3
t
4
t
5
t
6 3
t
7 4
t
8
t
9
Serial Interface
t
10
t
113
t
12
t
13
t
143
t
153
t
16
t
174
t
17A4
A, B
Versions
1.47
1.6
200
400
35
60
0
0
35
35
5
30
0
200
30
25
25
25
5
25
20
0
30
0
30
DD
= +5 V
5%, AGND = DGND = 0 V, REF IN = +2.5 V)
Unit
µs
max
µs
max
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns max
ns min
ns max
ns min
ns min
ns min
ns max
ns min
ns min
ns min
ns max
ns min
ns min
ns max
ns min
ns max
Test Conditions/Comments
Conversion Time for AD7892-3
Conversion Time for AD7892-1, AD7892-2
Acquisition Time for AD7892-3
Acquisition Time for AD7892-1, AD7892-2
CONVST
Pulsewidth
EOC
Pulsewidth
EOC
Falling Edge to
CS
Falling Edge Setup Time
CS
to
RD
Setup Time
Read Pulsewidth
Data Access Time After Falling Edge of
RD
Bus Relinquish Time After Rising Edge of
RD
CS
to
RD
Hold Time
RD
to
CONVST
Setup Time
RFS
Low to SCLK Falling Edge Setup Time
RFS
Low to Data Valid Delay
SCLK High Pulsewidth
SCLK Low Pulsewidth
SCLK Rising Edge to Data Valid Hold Time
SCLK Rising Edge to Data Valid Delay
RFS
to SCLK Falling Edge Hold Time
Bus Relinquish Time after Rising Edge of
RFS
Bus Relinquish Time after Rising Edge of SCLK
S
Version
1.68
320
45
60
0
0
45
40
5
40
0
200
35
30
25
25
5
30
30
0
30
0
30
NOTES
1
Sample tested at +25°C to ensure compliance. All input signals are measured with tr = tf = 1 ns (10% to 90% of +5 V) and timed from a voltage level of +1.6 V.
2
See Figures 2 and 3.
3
Measured with the load circuit of Figure 1 and defined as the time required for an output to cross 0.8 V or 2.4 V.
4
These times are derived from the measured time taken by the data outputs to change 0.5 V when loaded with the circuit of Figure 1. The measured number is then
extrapolated back to remove the effects of charging or discharging the 50 pF capacitor. This means that the times quoted in the timing characteristics are the true bus
relinquish times of the part and as such are independent of external bus loading capacitances.
5
Assumes CMOS loads on the data bits. With TTL loads, more current is drawn from the data lines and the
RD
to
CONVST
time needs to be extended to 400 ns min.
Specifications subject to change without notice.
1.6mA
TO
OUTPUT
PIN
50pF
+1.6V
200 A
Figure 1. Load Circuit for Access Time and Bus Relinquish Time
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD7892 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
–4–
REV. C
AD7892
ORDERING GUIDE
Model
AD7892AN-1
AD7892BN-1
AD7892AR-1
AD7892BR-1
AD7892SQ-1
AD7892AN-2
AD7892BN-2
AD7892AR-2
AD7892BR-2
AD7892AN-3
AD7892BN-3
AD7892AR-3
AD7892BR-3
EVAL-AD7892-2CB
2
EVAL-AD7892-3CB
2
EVAL-CONTROL BOARD
3
Input
Range
±
5 V or
±
10 V
±
5 V or
±
10 V
±
5 V or
±
10 V
±
5 V or
±
10 V
±
5 V or
±
10 V
0 V to +2.5 V
0 V to +2.5 V
0 V to +2.5 V
0 V to +2.5 V
±
2.5 V
±
2.5 V
±
2.5 V
±
2.5 V
Evaluation Board
Evaluation Board
Controller Board
Sample
Rate
500 kSPS
500 kSPS
500 kSPS
500 kSPS
500 kSPS
500 kSPS
500 kSPS
500 kSPS
500 kSPS
600 kSPS
600 kSPS
600 kSPS
600 kSPS
Relative
Accuracy
±
1 LSB
±
1 LSB
±
1 LSB
±
1 LSB
±
1 LSB
±
1 LSB
±
1 LSB
Temperature
Range
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–55°C to +125°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
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
Package
Option
1
N-24
N-24
R-24
R-24
Q-24
N-24
N-24
R-24
R-24
N-24
N-24
R-24
R-24
NOTES
1
N = Plastic DIP; Q = Cerdip; R = SOIC.
2
These boards can be used as stand-alone evaluation boards or in conjunction with the EVAL-CONTROL BOARD for evaluation/demonstration purposes.
3
This board is a complete unit allowing a PC to control and communicate with all Analog Devices’ evaluation boards ending in the CB designators.
[font=微软雅黑][size=3]The long-awaited [State Grid Collection System 2.0 TI Solution] live broadcast started this morning! Friends, hurry up and grab the sofa and sit tight, and watch how TI technical ex...
I just saw that the forum already has relevant information, but the manual name is not in Chinese... Link address [url=https://bbs.eeworld.com.cn/thread-420130-1-1.html]https://bbs.eeworld.com.cn/thre...
Since many people always ask this question, here is a summary document for your reference. It must be explained here that the following steps are all for Linux systems, not WinCE. You may notice that ...
I want to synchronously read 16 analog signals and complete analog-to-digital conversion. I use ADI's AD7768 evaluation board (introduction to the AD7768 evaluation board: https://www.analog.com/en/de...
I modified the i2c and pcf8563 drivers, and compiled and ran them normally. But after a while, a warning "RTC Voltage Low - reliable date/time information is no longer guaranteed!" will appear. From t...
When I saw the program written by the novice of 51, I admired his perseverance. To be honest, he is so persistent in making something. Well done, :victory:
But I think it would be perfect if the progr...
On August 24th, Jin Yuzhi, CEO of Huawei's Intelligent Automotive Solutions BU, announced the first automotive application of Huawei Qiankun's unique Limera technology. This technology eliminates t...[Details]
A vacuum eutectic furnace is a critical piece of equipment used in the manufacturing and processing of various materials, particularly in the fields of microelectronics and nanotechnology. One of t...[Details]
introduction
Bluetooth technology is a short-range wireless communication technology designed to replace wired cables. It is a wireless communication technology standard developed by the SIG, ...[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]
On August 21st, Zhiyuan Robotics revealed at its first partner conference that it expects shipments to reach thousands of units this year and tens of thousands next year. The company hopes to reach...[Details]
According to foreign media reports, Nissan Motor has recently reached a cooperation with US battery technology company LiCAP Technologies to jointly promote the research and development of next-gen...[Details]
Over the past decade, the narrative surrounding fuel vehicles has been one of decline and replacement. Under the onslaught of new energy vehicles, traditional automakers have been forced to acceler...[Details]
Wearable technology is taking off, with applications evolving rapidly, from smartwatches to fitness trackers and even smart wigs! Bluetooth Smart is at the center of this revolution. This is the se...[Details]
For self-driving cars, LiDAR is the sensory organ that allows them to "see the road." Simply put, its operating principle involves sending out a laser beam, receiving the echo, and ultimately gener...[Details]
With the development of vehicle technology, there are more types of cars. Cars are divided into hybrid, pure electric vehicles, and fuel vehicles. For hybrid cars, they are divided into plug-in hyb...[Details]
This series of articles aims to help readers have a brief understanding of the Hongke KPA Automation system and to quickly get started with MoDK, including: an introduction to Hongke KPA Automation...[Details]
Since entering the electronic components industry, I've learned that electronic components come in different packaging types. Some people have argued that different types of components may look the...[Details]
Munich, Germany, August 19, 2025 –
Infineon Technologies AG, a global semiconductor leader in power systems and the Internet of Things, announced today that its AIROC™ CYW20829 Bluetooth® low e...[Details]
NPN and PNP are two commonly used transistor circuits. They play an important role in industrial automation and control systems. This article will explain the difference between NPN and PNP and exp...[Details]
Currently, PLCs are widely used in various industries, including special machine tools, machine tools, control systems, building automation, steel, petrochemicals, electricity, building materials, ...[Details]
TI Technology Forum
京公网安备 11010802033920号
EEWORLD
