AD7890SQ-10 查看數據表（PDF） - Analog Devices
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AD7890SQ-10 Datasheet PDF : 29 Pages
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AD7890
SPECIFICATIONS
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.
Table 1.
Parameter
DYNAMIC PERFORMANCE
Signal to (Noise + Distortion) Ratio2
Total Harmonic Distortion (THD)2
Peak Harmonic or Spurious Noise2
Intermodulation Distortion
2nd Order Terms
3rd Order Terms
Channel-to-Channel Isolation2
DC ACCURACY
Resolution
Min. Resolution for Which No
Missing Codes Are Guaranteed
Relative Accuracy2
Differential Nonlinearity2
Positive Full-Scale Error2
Full-Scale Error Match4
AD7890-2, AD7890-4
Unipolar Offset Error2
Unipolar Offset Error Match
AD7890-10 Only
Negative Full-Scale Error2
Bipolar Zero Error2
Bipolar Zero Error Match
ANALOG INPUTS
AD7890-10
Input Voltage Range
Input Resistance
AD7890-4
Input Voltage Range
Input Resistance
AD7890-2
Input Voltage Range
Input Current
MUX OUT OUTPUT
Output Voltage Range
Output Resistance
AD7890-10, AD7890-4
AD7890-2
SHA IN INPUT
Input Voltage Range
Input Current
REFERENCE OUTPUT/INPUT
REF IN Input Voltage Range
Input Impedance
Input Capacitance5
REF OUT Output Voltage
REF OUT Error @ 25°C
TMIN to TMAX
REF OUT Temperature Coefficient
REF OUT Output Impedance
A Versions1
70
−77
−78
−80
−80
−80
12
12
±1
±1
±2.5
2
±2
2
±2
±5
2
±10
20
0 to 4.096
11
0 to 2.5
50
0 to 2.5
3/5
2
0 to 2.5
±50
2.375/2.625
1.6
10
2.5
±10
±20
25
2
B Versions S Version Unit
70
70
dB min
−77
−77
dB max
−78
−78
dB max
−80
−80
dB typ
−80
−80
dB typ
−80
−80
dB max
12
12
Bits
12
12
Bits
±0.5
±1
LSB max
±1
±1
LSB max
±2.5
±2.5
LSB max
2
2
LSB max
±2
±2
LSB max
2
2
LSB max
±2
±2
LSB max
±5
±5
LSB max
2
2
LSB max
±10
±10
Volts
20
20
kΩ min
0 to 4.096
11
0 to 4.096
11
Volts
kΩ min
0 to 2.5
50
0 to 2.5
200
Volts
nA max
0 to 2.5
0 to 2.5
Volts
3/5
3/5
kΩ min/kΩ max
2
2
kΩ max
0 to 2.5
±50
0 to 2.5
±50
Volts
nA max
2.375/2.625 2.375/2.625
1.6
1.6
10
10
2.5
2.5
±10
±10
±20
±25
25
25
2
2
Rev. C | Page 3 of 28
V min/V max
kΩ min
pF max
V nom
mV max
mV max
ppm/°C typ
kΩ nom
Test Conditions/Comments
Using external CONVST, any channel
fIN = 10 kHz sine wave, fSAMPLE = 100 kHz3
fIN = 10 kHz sine wave, fSAMPLE = 100 kHz3
fIN = 10 kHz sine wave, fSAMPLE = 100 kHz3
fa = 9 kHz, fb = 9.5 kHz, fSAMPLE = 100 kHz3
fIN = 1 kHz sine wave
Assuming VIN is driven from low impedance
2.5 V ± 5%
Resistor connected to internal reference node
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