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AD7890BN-4 датащи(PDF) 2 Page - Analog Devices

номер детали AD7890BN-4
подробное описание детали  LC2MOS 8-Channel, 12-Bit Serial, Data Acquisition System
Download  20 Pages
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

AD7890BN-4 датащи(HTML) 2 Page - Analog Devices

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REV. 0
–2–
AD7890–SPECIFICATIONS
Parameter
A Versions
1
B Versions
S Version
Units
Test Conditions/Comments
DYNAMIC PERFORMANCE
Using External CONVST. Any Channel
Signal to (Noise + Distortion) Ratio
2
70
70
70
dB min
fIN = 10 kHz Sine Wave, fSAMPLE = 100 kHz
3
Total Harmonic Distortion (THD)
2
–78
–78
–78
dB max
fIN = 10 kHz Sine Wave, fSAMPLE = 100 kHz
3
Peak Harmonic or Spurious Noise
2
–79
–79
–79
dB max
fIN = 10 kHz Sine Wave, fSAMPLE = 100 kHz
3
Intermodulation Distortion
fa = 9 kHz, fb = 9.5 kHz, fSAMPLE = 100 kHz
3
2nd Order Terms
–80
–80
–80
dB typ
3rd Order Terms
–80
–80
–80
dB typ
Channel-to-Channel Isolation
2
–80
–80
–80
dB max
fIN = 1 kHz Sine Wave
DC ACCURACY
Resolution
12
12
12
Bits
Minimum Resolution for Which
No Missing Codes Are Guaranteed
12
12
12
Bits
Relative Accuracy
2
±1
±0.5
±1
LSB max
Differential Nonlinearity
2
±1
±1
±1
LSB max
Positive Full-Scale Error
2
±2.5
±2.5
±2.5
LSB max
Full-Scale Error Match
4
2
2
2
LSB max
AD7890-2, AD7890-4
Unipolar Offset Error
2
±2
±2
±2
LSB max
Unipolar Offset Error Match
2
2
2
LSB max
AD7890-10 Only
Negative Full-Scale Error
2
±2
±2
±2
LSB max
Bipolar Zero Error
2
±4
±4
±4
LSB max
Bipolar Zero Error Match
2
2
2
LSB max
ANALOG INPUTS
AD7890-10
Input Voltage Range
±10
±10
±10
Volts
Input Resistance
20
20
20
k
Ω min
AD7890-4
Input Voltage Range
0 to +4.096
0 to +4.096
0 to +4.096
Volts
Input Resistance
11
11
11
k
Ω min
AD7890-2
Input Voltage Range
0 to +2.5
0 to +2.5
0 to +2.5
Volts
Input Current
50
50
200
nA max
MUX OUT OUTPUT
Output Voltage Range
0 to +2.5
0 to +2.5
0 to +2.5
Volts
Output Resistance
(AD7890-10, AD7890-4)
3/5
3/5
3/5
k
Ω min/kΩ max
(AD7890-2)
2
2
2
k
Ω max
Assuming VIN Is Driven from Low Impedance
SHA IN INPUT
Input Voltage Range
0 to +2.5
0 to +2.5
0 to +2.5
Volts
Input Current
±50
±50
±50
nA max
REFERENCE OUTPUT/INPUT
REF IN Input Voltage Range
2.375/2.625
2.375/2.625
2.375/2.625
V min/V max
2.5 V
± 5%
Input Impedance
1.6
1.6
1.6
k
Ω min
Resistor Connected to Internal Reference Node
Input Capacitance
5
10
10
10
pF max
REF OUT Output Voltage
2.5
2.5
2.5
V nom
REF OUT Error @ +25
°C
±10
±10
±10
mV max
TMIN to TMAX
±20
±20
±25
mV max
REF OUT Temperature Coefficient
25
25
25
ppm/
°C typ
REF OUT Output Impedance
2
2
2
k
Ω nom
LOGIC INPUTS
Input High Voltage, VINH
2.4
2.4
2.4
V min
VDD = 5 V ± 5%
Input Low Voltage, VINL
0.8
0.8
0.8
V max
VDD = 5 V ± 5%
Input Current, IIN
±10
±10
±10
µA max
VIN = 0 V to VDD
Input Capacitance, CIN
5
10
10
10
pF max
(VDD = +5 V, AGND = DGND = 0 V, REF IN = +2.5 V, fCLK IN = 2.5 MHz external,
MUX OUT connect to SHA IN. All specifications TMIN to TMAX unless otherwise noted.)


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