Typical rms noise at worst case transitions and temperatures.
3
Measured with fixed resistors as shown in Figures 11, 12 and 13. Adjustable to zero. Tested at room temperature.
4
Full-Scale Error is expressed as the % difference between the actual full-scale code transition voltage and the ideal full scale transition voltage, and includes the effect of offset
error. For bipolar input ranges, the Full-Scale Error is the worst case of either the –Full Scale or +Full Scale code transition voltage errors. For unipolar input ranges, Full-Scale
Error is with respect to the +Full-Scale code transition voltage.
5
External 2.5 V reference connected to REF.
6
f
IN
= 20 kHz, 0.5 dB down unless otherwise noted.
7
All specifications in dB are referred to a full scale
±
10 V input.
8
Full-Power Bandwidth is defined as full-scale input frequency at which Signal-to-(Noise+Distortion) degrades to 60 dB, or 10 bits of accuracy.
9
Recovers to specified performance after a 2
×
F
S
input overvoltage.
Specifications subject to change without notice.
–2–
REV. D
AD977/AD977A
AD977A–SPECIFICATIONS
(–40 C to +85 C, F = 200 kHz, V
S
DIG
= V
ANA
= 5 V, unless otherwise noted)
Max
Min
16
C Grade
Typ Max
Unit
Bits
Parameter
RESOLUTION
ANALOG INPUT
Voltage Range
Impedance
Sampling Capacitance
THROUGHPUT SPEED
Complete Cycle
Throughput Rate
DC ACCURACY
Integral Linearity Error
Differential Linearity Error
No Missing Codes
Transition Noise
2
Full-Scale Error
3, 4
Full-Scale Error Drift
Full-Scale Error
Ext. REF = 2.5 V
Full-Scale Error Drift
Ext. REF = 2.5 V
Bipolar Zero Error
3
Bipolar Ranges
Bipolar Zero Error Drift
Bipolar Ranges
Unipolar Zero Error
3
Unipolar Ranges
Unipolar Zero Error Drift
Unipolar Ranges
Recovery to Rated Accuracy
After Power-Down
5
2.2
µF
to CAP
Power Supply Sensitivity
V
ANA
= V
DIG
= V
D
= 5 V
±
5%
AC ACCURACY
Spurious Free Dynamic Range
6
Total Harmonic Distortion
6
Signal-to-(Noise+Distortion)
6
–60 dB Input
Signal-to-Noise
6
Full Power Bandwidth
8
–3 dB Input Bandwidth
SAMPLING DYNAMICS
Aperture Delay
Transient Response, Full-Scale Step
Overvoltage Recovery
9
REFERENCE
Internal Reference Voltage
Internal Reference Source Current
External Reference Voltage Range
for Specified Linearity
External Reference Current Drain
Ext. REF = 2.5 V
Min
16
A Grade
Typ
Max
Min
16
B Grade
Typ
40
5
200
±
3
+3
1.0
±
7
±
0.5
±
0.5
±
2
±
10
±
2
±
10
±
2
1
±
8
90
–90
83
27
83
1
2.7
40
1
150
2.48
2.5
1
2.5
2.52
±
10 V, 0 V to 5 V, . . . (See Table II)
See Table II
40
5
200
±
2.0
+1.75
1.0
±
7
±
0.25
±
0.25
±
2
±
10
±
2
±
10
±
2
1
±
8
96
–96
85
28
85
1
2.7
40
1
150
2.48
2.5
1
2.5
2.52
2.48
83
83
90
200
40
5
pF
µs
kHz
LSB
1
LSB
Bits
LSB
%
ppm/°C
%
ppm/°C
±
15
mV
ppm/°C
±
10
mV
ppm/°C
–2
15
–1
16
±
3
±
2
15
1.0
±
7
±
0.5
±
0.5
±
2
±
2
±
2
1
±
8
ms
LSB
dB
7
dB
dB
dB
dB
MHz
MHz
ns
µs
ns
V
µA
V
mA
–90
27
1
2.7
40
1
150
2.5
1
2.5
2.52
2.3
2.7
1.2
2.3
2.7
1.2
2.3
2.7
1.2
NOTES
1
LSB means Least Significant Bit. With a
±
10 V input, one LSB is 305
µV.
2
Typical rms noise at worst case transitions and temperatures.
3
Measured with fixed resistors as shown in Figures 11, 12 and 13. Adjustable to zero. Tested at room temperature.
4
Full-Scale Error is expressed as the % difference between the actual full-scale code transition voltage and the ideal full scale transition voltage, and includes the effect of offset
error. For bipolar input ranges, the Full-Scale Error is the worst case of either the –Full Scale or +Full Scale code transition voltage errors. For unipolar input ranges, Full-Scale
Error is with respect to the +Full-Scale code transition voltage.
5
External 2.5 V reference connected to REF.
6
f
IN
= 20 kHz, 0.5 dB down unless otherwise noted.
7
All specifications in dB are referred to a full scale
±
10 V input.
8
Full-Power Bandwidth is defined as full-scale input frequency at which Signal-to-(Noise+Distortion) degrades to 60 dB, or 10 bits of accuracy.
9
Recovers to specified performance after a 2
×
F
S
input overvoltage.
Specifications subject to change without notice.
REV. D
–3–
AD977/AD977A–SPECIFICATIONS
(Both Specs)
Parameter
DIGITAL INPUTS
Logic Levels
V
IL
V
IH
I
IL
I
IH
DIGITAL OUTPUTS
Data Format
Data Coding
Pipeline Delay
V
OL
V
OH
POWER SUPPLIES
Specified Performance
V
DIG
V
ANA
I
DIG
I
ANA
Power Dissipation
PWRD LOW
PWRD HIGH
TEMPERATURE RANGE
Specified Performance
T
MIN
to T
MAX
Conditions
Min
A, B, C Grades
Typ
Max
Unit
–0.3
2.0
+0.8
V
DIG
+ 0.3
±
10
±
10
V
V
µA
µA
I
SINK
= 1.6 mA
I
SOURCE
= 500
µA
Serial 16-Bits
Binary Two’s Complement or Straight Binary
Conversion Results Only Available after Completed Conversion
I am currently researching a TCPMP project and now want to give it a nice interface. If anyone has done this, please contact me for cooperation. EMAIL: mobile_search@163.com, MSN: mobile_search@hotmai...
[color=black][font=宋体][size=14pt] [size=4] [/size][/size][/font][size=4][font=宋体][size=14pt]DIY[/font][/size][font=宋体][size=14pt]([/size][/font][size=14pt][font=Times New Roman]Do It Yourself[/font][/...
Well, it's a bit difficult for me to sort out the order, so I won't do it. I have a lot of boards on hand. When I wrote that blog before (without taking photos), I simply sorted out at least ten board...
I had the urge to do a series of topics on sound visualization. This topic is a bit difficult and covers a wide range of areas. The related FFT and FHT algorithms are also quite complicated. However, ...
[i=s]This post was last edited by zhanghuichun on 2014-11-28 13:19[/i] This work consists of two parts, one is a smart watch made under STM32MCU (limited by the size of the touch screen, it is a bit l...
1. Purpose Since the number of times the STM32 FLASH can be erased and written is limited, in order to protect our FLASH and extend the use time of the MCU, we can debug on the SRAM. SRAM is a ...[Details]
In the actual project development process, it is common to encounter modifications to the hardware circuit, and then the modified part requires the modification of the driver. Thinking about the comi...[Details]
In the previous article, I wrote a simple GPIO running light test, which looked a bit monotonous. I was used to serial port debugging. If there was no serial port on the board, I had to find another ...[Details]
The last two blogs talked about a version problem of STM32CubeMX and the problem of hardware reset. When you solve these two problems, you will find that after the program is burned into the board, t...[Details]
1. Initial understanding of FSMC: FSMC consists of 4 modules: (1) AHB interface (including FSMC configuration register) (2) NOR flash memory and PSRAM controller (when driving LCD, LCD is like a PSRA...[Details]
Automotive LCD Instrument Clock EMI Solution As early as 2014, the market size of China's automotive full LCD instrument has reached 3.506 billion yuan, and it is expected that by 2020, this s...[Details]
On the eve of Qingming Festival, the trade friction between China and the United States is on the rise. Let's follow the automotive electronics editor to learn more about the relevant content. Ba...[Details]
In 1952, Bell Labs built a 6-foot-tall automatic number recognition machine called "Audrey", which could recognize the pronunciation of the numbers 0 to 9 with an accuracy of more than 90%. And its...[Details]
On April 16, the U.S. Department of Commerce announced that it would ban U.S. companies from selling parts, goods, software, and technology to
ZTE
for seven years, until March 13, 2025.
Th...[Details]
The parking assistance system is an important application of the active anti-collision system of automobiles in low-speed and complex urban environments, and is also a specific embodiment of the inte...[Details]
Artificial intelligence
There is no inherent bias in AI. It does not "think" something is true or false for reasons that cannot be explained by logic. Unfortunately, human bias exists in mach...[Details]
The implementation of CAN driver under embedded operating system Android requires not only adding CAN driver device in Linux kernel, but also implementing the call of Android HAL layer. Taking S5...[Details]
In recent years, in order to meet the needs of social development, more and more companies have entered the fields of smart phones, artificial intelligence,
VR
, AR, etc. After seeing the d...[Details]
China Energy Storage Network News:
"As the world's first third-generation blockchain, Anda Chain, which has China's independent intellectual property rights, will be launched globally in the ...[Details]
Embedded System
京公网安备 11010802033920号
EEWORLD
