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AD7475 Datasheet(PDF) 2 Page - Analog Devices

Part # AD7475
Description  1 MSPS, 12-Bit ADCs
Download  16 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7475 Datasheet(HTML) 2 Page - Analog Devices

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REV. A
–2–
AD7475/AD7495–SPECIFICATIONS1
AD7475–SPECIFICATIONS1
Parameter
A Version
1
B Version
1
Unit
Test Conditions/Comments
DYNAMIC PERFORMANCE
Signal to Noise + Distortion Ratio
68
68
dB min
fIN = 300 kHz Sine Wave, fSAMPLE = 1 MSPS
(SINAD)
Total Harmonic Distortion (THD)
–75
–75
dB max
fIN = 300 kHz Sine Wave, fSAMPLE = 1 MSPS
Peak Harmonic or Spurious Noise
–76
–76
dB max
fIN = 300 kHz Sine Wave, fSAMPLE = 1 MSPS
(SFDR)
Intermodulation Distortion (IMD)
Second Order Terms
–78
–78
dB typ
Third Order Terms
–78
–78
dB typ
Aperture Delay
10
10
ns typ
Aperture Jitter
50
50
ps typ
Full Power Bandwidth
8.3
8.3
MHz typ
@ 3 dB
Full Power Bandwidth
1.3
1.3
MHz typ
@ 0.1 dB
DC ACCURACY
Resolution
12
12
Bits
Integral Nonlinearity
±1.5
±1
LSB max
@ 5 V (typ @ 3 V)
±0.5
±0.5
LSB typ
@ 25
°C
Differential Nonlinearity
+1.5/–0.9
+1.5/–0.9
LSB max
@ 5 V Guaranteed No Missed Codes to 12 Bits
(typ @ 3 V)
±0.5
±0.5
LSB typ
@ 25
°C
Offset Error
±8
±8
LSB max
Typically
±2.5 LSB
Gain Error
±3
±3LSB max
ANALOG INPUT
Input Voltage Ranges
0 to REF IN
Volts
DC Leakage Current
±1
±1
µA max
Input Capacitance
20
20
pF typ
REFERENCE INPUT
REF IN Input Voltage Range
2.5
2.5
Volts
±1% for Specified Performance
DC Leakage Current
±1
±1
µA max
Input Capacitance
20
20
pF typ
LOGIC INPUTS
Input High Voltage, VINH
VDRIVE – 1
VDRIVE – 1
V min
Input Low Voltage, VINL
0.4
0.4
V max
Input Current, IIN
±1
±1
µA max
Typically 10 nA, VIN = 0 V or VDRIVE
Input Capacitance, CIN
2
10
10
pF max
LOGIC OUTPUTS
Output High Voltage, VOH
VDRIVE – 0.2
V min
ISOURCE = 200
µA; VDRIVE = 2.7 V to 5.25 V
Output Low Voltage, VOL
0.4
0.4
V max
ISINK = 200
µA
Floating-State Leakage Current
±10
±10
µA max
Floating-State Output Capacitance
2
10
10
pF max
Output Coding
Straight (Natural) Binary
CONVERSION RATE
Conversion Time
800
800
ns max
16 SCLK Cycles with SCLK at 20 MHz
Track/Hold Acquisition Time
300
300
ns max
Sine Wave Input
325
325
ns max
Full-Scale Step Input
Throughput Rate
1
1
MSPS max
See Serial Interface Section
POWER REQUIREMENTS
VDD
2.7/5.25
2.7/5.25
V min/max
VDRIVE
2.7/5.25
2.7/5.25
V min/max
IDD
3
Digital I/Ps = 0 V or VDRIVE
Normal Mode (Static)
750
750
A typ
VDD = 2.7 V to 5.25 V. SCLK On or Off
Normal Mode (Operational)
2.1
2.1
mA max
VDD = 4.75 V to 5.25 V. fSAMPLE = 1 MSPS
1.5
1.5
mA max
VDD = 2.7 V to 3.6 V. fSAMPLE = 1 MSPS
Partial Power-Down Mode
450
450
µA typ
fSAMPLE = 100 kSPS
Partial Power-Down Mode
100
100
µA max
(Static)
Full Power-Down Mode
1
1
µA max
SCLK On or Off
(VDD = 2.7 V to 5.25 V, VDRIVE = 2.7 V to 5.25 V, REF IN = 2.5 V, fSCLK = 20 MHz unless otherwise
noted; TA = TMIN to TMAX, unless otherwise noted.)


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