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AD7703CR 데이터시트(PDF) 2 Page - Analog Devices

부품명 AD7703CR
상세설명  LC2MOS 20-Bit A/D Converter
Download  16 Pages
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AD7703CR 데이터시트(HTML) 2 Page - Analog Devices

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REV. D
–2–
AD7703–SPECIFICATIONS
Parameter
A/S Versions
2
B Version
2
C Version
2
Units
Test Conditions/Comments
STATIC PERFORMANCE
Resolution
20
20
20
Bits
Integral Nonlinearity, TMIN to TMAX
± 0.0015
± 0.0007
± 0.0003
% FSR typ
+25
°C
± 0.003
± 0.0015
± 0.0008
% FSR max
TMIN to TMAX
± 0.003
± 0.0015
± 0.0012
% FSR max
Differential Nonlinearity, TMIN to TMAX
± 0.5
± 0.5
± 0.5
LSB typ
Guaranteed No Missing Codes
Positive Full-Scale Error
3
± 4
± 4
± 4
LSB typ
± 16
± 16
± 16
LSB max
Full-Scale Drift
4
± 19/± 37
± 19
± 19
LSB typ
Unipolar Offset Error
3
± 4
± 4
± 4
LSB typ
± 16
± 16
± 16
LSB max
Unipolar Offset Drift
4
± 26
± 26
± 26
LSB typ
Temp Range: 0
°C to +70°C
± 67 +48/–400
± 67
± 67
LSB typ
Specified Temp Range
Bipolar Zero Error
3
± 4
± 4
± 4
LSB typ
± 16
± 16
± 16
LSB max
Bipolar Zero Drift
4
± 13
± 13
± 13
LSB typ
Temp Range: 0
°C to +70°C
± 34 +24/–200
± 34
± 34
LSB typ
Specified Temp Range
Bipolar Negative Full-Scale Errors
3
± 8
± 8
± 8
LSB typ
± 32
± 32
± 32
LSB max
Bipolar Negative Full-Scale Drift
4
± 10/± 20
± 10
± 10
LSB typ
Noise (Referred to Output)
1.6
1.6
1.6
LSB rms typ
DYNAMIC PERFORMANCE
Sampling Frequency, fS
fCLKIN/256
fCLKIN/256
fCLKIN/256
Hz
Output Update Rate, fOUT
fCLKIN/1024
fCLKIN/1024
fCLKIN/1024
Hz
Filter Corner Frequency, f–3 dB
fCLKIN/409,600
fCLKIN/409,600
fCLKIN/409,600
Hz
Settling Time to
±0.0007% FS
507904/fCLKIN
507904/fCLKIN
507904/fCLKIN
sec
For Full-Scale Input Step
SYSTEM CALIBRATION
Positive Full-Scale Calibration Range
VREF + 0.1
VREF + 0.1
VREF + 0.1
V max
System Calibration Applies to
Positive Full-Scale Overrange
VREF + 0.1
VREF + 0.1
VREF + 0.1
V max
Unipolar and Bipolar Ranges.
Negative Full-Scale Overrange
–(VREF + 0.1)
–(VREF + 0.1)
–(VREF + 0.1)
V max
After Calibration, if AIN > VREF,
Maximum Offset Calibration Ranges
5, 6
the Device Will Output All 1s.
Unipolar Input Range
–(VREF + 0.1)
–(VREF + 0.1)
–(VREF + 0.1)
V max
If AIN < 0 (Unipolar) or –VREF
Bipolar Input Range
–0.4 VREF to +0.4 VREF –0.4 VREF to +0.4 VREF –0.4 VREF to +0.4 VREF V max
(Bipolar), the Device Will
Input Span
7
0.8 VREF
0.8 VREF
0.8 VREF
V min
Output all 0s
2 VREF + 0.2
2 VREF + 0.2
2 VREF + 0.2
V max
ANALOG INPUT
Unipolar Input Range
0 to +2.5
0 to +2.5
0 to +2.5
Volts
Bipolar Input Range
± 2.5
± 2.5
± 2.5
Volts
Input Capacitance
20
20
20
pF typ
Input Bias Current
1
1
1
1
nA typ
LOGIC INPUTS
All Inputs except CLKIN
VINL, Input Low Voltage
0.8
0.8
0.8
V max
VINH, Input High Voltage
2.0
2.0
2.0
V min
CLKIN
VINL, Input Low Voltage
0.8
0.8
0.8
V max
VINH, Input High Voltage
3.5
3.5
3.5
V min
IIN, Input Current
10
10
10
µA max
LOGIC OUTPUTS
VOL, Output Low Voltage
0.4
0.4
0.4
V max
ISINK = 1.6 mA
VOH, Output High Voltage
DVDD –1
DVDD –1
DVDD –1
V min
ISOURCE = 100
µA
Floating State Leakage Current
± 10
± 10
± 10
µA max
Floating State Output Capacitance
9
9
9
pF typ
POWER REQUIREMENTS
Power Supply Voltages
Analog Positive Supply (AVDD)
4.5/5.5
4.5/5.5
4.5/5.5
V min/V max
For Specified Performance
Digital Positive Supply (DVDD)
4.5/AVDD
4.5/AVDD
4.5/AVDD
V min/V max
Analog Negative Supply (AVSS)
–4.5/–5.5
–4.5/–5.5
–4.5/–5.5
V min/V max
Digital Negative Supply (DVSS)
–4.5/–5.5
–4.5/–5.5
–4.5/–5.5
V min/V max
Calibration Memory Retention
Power Supply Voltage
2.0
2.0
2.0
V min
(TA = +25 C; AVDD = DVDD = +5 V; AVSS = DVSS = –5 V; VREF = +2.5 V; fCLKIN = 4.096 MHz;
BP/UP = +5 V; MODE = +5 V; AIN Source Resistance = 1 k
1 with 1 nF to AGND at A
IN unless otherwise noted.)


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