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AD7485BSTZ Datasheet(PDF) 3 Page - Analog Devices

Part # AD7485BSTZ
Description  1 MSPS, Serial 14-Bit SAR ADC
PDF  15 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7485BSTZ Datasheet(HTML) 3 Page - Analog Devices

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REV.
–2–
AD7485–SPECIFICATIONS1
Parameter
Specification
Unit
Test Conditions/Comments
DYNAMIC PERFORMANCE
2, 3
fIN = 500 kHz Sine Wave
Signal to Noise + Distortion (SINAD)
4
76.5
dB min
78
dB typ
77
dB typ
Internal Reference
Total Harmonic Distortion (THD)
4
–90
dB max
–95
dB typ
–92
dB typ
Internal Reference
Peak Harmonic or Spurious Noise (SFDR)
4
–88
dB max
Intermodulation Distortion (IMD)
4
Second-Order Terms
–96
dB typ
fIN1 = 95.053 kHz, fIN2 = 105.329 kHz
Third-Order Terms
–94
dB typ
Aperture Delay
10
ns typ
Full Power Bandwidth
40
MHz typ
@ 3 dB
3.5
MHz typ
@ 0.1 dB
DC ACCURACY
Resolution
14
Bits
Integral Nonlinearity
4
±1LSB max
±0.5
LSB typ
Differential Nonlinearity
4
±0.75
LSB max
Guaranteed No Missed Codes to 14 Bits
±0.25
LSB typ
Offset Error
4
±6LSB max
0.036
%FSR max
Gain Error
4
±6LSB max
0.036
%FSR max
ANALOG INPUT
Input Voltage
0
V min
2.5
V max
DC Leakage Current
±1
µA max
Input Capacitance
5
35
pF typ
REFERENCE INPUT/OUTPUT
VREFIN Input Voltage
2.5
V
±1% for Specified Performance
VREFIN Input DC Leakage Current
±1
µA max
VREFIN Input Capacitance
5
25
pF typ
VREFIN Input Current
6
220
A typ
External Reference
VREFOUT Output Voltage
2.5
V typ
VREFOUT Error @ 25
°C
±50
mV typ
VREFOUT Error TMIN to TMAX
±100
mV max
VREFOUT Output Impedance
1
Ω typ
LOGIC INPUTS
Input High Voltage, VINH
VDRIVE –1V min
Input Low Voltage, VINL
0.4
V max
Input Current, IIN
±1
µA max
Input Capacitance, CIN
5
10
pF typ
LOGIC OUTPUTS
Output High Voltage, VOH
7
0.7
× VDRIVE
V min
Output Low Voltage, VOL
7
0.3
× VDRIVE
V max
Floating-State Leakage Current
±10
µA max
Floating-State Output Capacitance
5
10
pF max
Output Coding
Straight (Natural) Binary
CONVERSION RATE
Conversion Time
24
MCLKs
Track/Hold Acquisition Time
100
ns max
Sine Wave Input
70
ns max
Full-Scale Step Input
Throughput Rate
1
MSPS max
(VDD = 5 V
5%, AGND = DGND = 0 V, VREF = External, fSAMPLE = 1 MSPS; all specifica-
tions TMIN to TMAX and valid for VDRIVE = 2.7 V to 5.25 V, unless otherwise noted.)
A



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