參數(shù)資料
型號(hào): AD7861
廠商: Analog Devices, Inc.
英文描述: 11-Bit Resolution Simultaneous Sampling A/D Converter(同時(shí)采樣11位A/D轉(zhuǎn)換器)
中文描述: 11位分辨率同時(shí)采樣的A / D轉(zhuǎn)換器(同時(shí)采樣11位的A / D轉(zhuǎn)換器)
文件頁數(shù): 2/6頁
文件大?。?/td> 257K
代理商: AD7861
AD7861–SPECIFICATIONS
Parameter
AD7861AP Units
Conditions/Comments
DC ACCURACY
Resolution
Relative Accuracy
Differential Nonlinearity
Bias Offset Error
Bias Offset Error Match
Full-Scale Error
Full-Scale Error Match
11
±
2
±
2.5
±
9
4
±
13
4
Bits
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
Twos Complement Data Format
Integral Nonlinearity
No Missing Codes Guaranteed
Any Channel
Between Channels
Any Channel
Between Channels
DYNAMIC PERFORMANCE
Signal-to-Noise Ratio (SNR)
Total Harmonic Distortion (THD)
Peak Harmonic or Spurious Noise
Channel-to-Channel Isolation
M1 = 0
M1 = 1
60
–60
–60
dB min
dB max
dB max
f
IN
= 1 kHz Sine Wave, f
SAMPLE
= 75 kHz
f
IN
= 1 kHz Sine Wave, f
SAMPLE
= 75 kHz
f
IN
= 1 kHz Sine Wave, f
SAMPLE
= 75 kHz
–58
–53
dB max
dB max
1 kHz Sine Wave Applied to Unselected Channels
1 kHz Sine Wave Applied to Unselected Channels
REFERENCE
Input Voltage Range (REF IN)
Input Current
Onboard Reference Output (REF OUT)
Reference Tolerance
Reference Drive Capability
2.5
50
2.5
±
5
±
100
V
μ
A max
V
%
μ
A max
SAMPLE-AND-HOLD
Acquisition Time
Aperture Delay Time
Aperture Delay Time Match
Droop Rate
1.6
200
20
5
μ
s
ns max
ns max
mV/ms max
20 CLK Cycles @ 12.5 MHz
LOGIC
Input High Voltage (V
IH
)
Input Low Voltage (V
IL
)
Input Leakage Current
Input Capacitance
(V
OH
)
(V
OL
)
Three-State Leakage Current
2
0.8
1
20
4.5
0.4
1
V min
V max
μ
A max
pF typ
V min
V max
μ
A max
I
SOURCE
Current = 20
μ
A, V
DD
= 5 V
I
SINK
Current = 400
μ
A, V
DD
= 5 V
CONVERSION RATE
Conversion Time/Channel
40
CLK Cycles
CONVST
Pulse Width
2
CLK Cycles min
ANALOG INPUTS
Nominal Input Level
Input Current
Input Capacitance
0–5
100
10
V
μ
A
pF
VIN1, VIN2, VIN3, AUX0–AUX3
SYSTEM CLOCK
6.25–12.5
MHz
POWER REQUIREMENTS
V
DD
I
DD
5
10
V dc
mA max
REV. A
– 2 –
(V
DD
= 5 V
6
5%; T
A
= –40
8
C to +85
8
C; REFIN = 2.5 V; Ext CLK @ 12.5 MHz,
unless otherwise noted)
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