AD7861 查看數據表（PDF） - Analog Devices
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AD7861 Datasheet PDF : 6 Pages
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AD7861–SPECIFICATIONS (VDD = 5 V ؎ 5%; TA = –40؇C to +85؇C; REFIN = 2.5 V; Ext CLK @ 12.5 MHz, unless
otherwise noted)
Parameter
DC ACCURACY
Resolution
Relative Accuracy
Differential Nonlinearity
Bias Offset Error
Bias Offset Error Match
Full-Scale Error
Full-Scale Error Match
DYNAMIC PERFORMANCE
Signal-to-Noise Ratio (SNR)
Total Harmonic Distortion (THD)
Peak Harmonic or Spurious Noise
Channel-to-Channel Isolation
M1 = 0
M1 = 1
REFERENCE
Input Voltage Range (REF IN)
Input Current
Onboard Reference Output (REF OUT)
Reference Tolerance
Reference Drive Capability
SAMPLE-AND-HOLD
Acquisition Time
Aperture Delay Time
Aperture Delay Time Match
Droop Rate
LOGIC
Input High Voltage (VIH)
Input Low Voltage (VIL)
Input Leakage Current
Input Capacitance
(VOH)
(VOL)
Three-State Leakage Current
CONVERSION RATE
Conversion Time/Channel
CONVST
Pulsewidth
ANALOG INPUTS
Nominal Input Level
Input Current
Input Capacitance
SYSTEM CLOCK
POWER REQUIREMENTS
VDD
IDD
AD7861AP
11
±2
± 2.5
±9
4
± 13
4
60
–60
–60
–58
–53
2.5
50
2.5
±5
± 100
1.6
200
20
5
2
0.8
1
20
4.5
0.4
1
40
2
0–5
100
10
6.25–12.5
5
10
Units
Bits
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
dB min
dB max
dB max
dB max
dB max
V
µA max
V
%
µA max
µs
ns max
ns max
mV/ms max
V min
V max
µA max
pF typ
V min
V max
µA max
CLK Cycles
CLK Cycles min
V
µA
pF
MHz
V dc
mA max
Conditions/Comments
Twos Complement Data Format
Integral Nonlinearity
Any Channel
Between Channels
Any Channel
Between Channels
fIN = 1 kHz Sine Wave, fSAMPLE = 75 kHz
fIN = 1 kHz Sine Wave, fSAMPLE = 75 kHz
fIN = 1 kHz Sine Wave, fSAMPLE = 75 kHz
1 kHz Sine Wave Applied to Unselected Channels
1 kHz Sine Wave Applied to Unselected Channels
20 CLK Cycles @ 12.5 MHz
ISOURCE Current = 20 µA, VDD = 5 V
ISINK Current = 400 µA, VDD = 5 V
VIN1, VIN2, VIN3, AUX0–AUX3
–2–
REV. B
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