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AD7484 Datasheet(PDF) 2 Page - Analog Devices

Part # AD7484
Description  3MSPS, 14-Bit SAR ADC
Download  12 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7484 Datasheet(HTML) 2 Page - Analog Devices

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REV. PrC
7/13/01
PRELIMINARY TECHNICAL DATA
–2–
AD7484–SPECIFICATIONS
(TA = 25 C, VDD = 4.75 V to 5.25 V, VDRIVE = 2.7 V to 5.25 V,
fSAMPLE = 3MSPS)
Parameter
Specification
Units
Test Conditions/Comments
DYNAMIC PERFORMANCE
FIN = 100kHz Sine Wave
Signal to Noise + Distortion (SINAD)
2
78
dB min
Signal to Noise Ratio (SNR)
2
78
dB min
Total Harmonic Distortion (THD)
2
-90
dB max
Peak Harmonic or Spurious Noise (SFDR)
2
T B D
dB max
Intermodulation Distortion (IMD)
2
Second Order Terms
T B D
dB typ
Third Order Terms
T B D
dB typ
Aperture Delay
10
ns typ
Aperture Jitter
10
ps typ
Full Power Bandwidth
50
MHz typ
@ 3 dB
T B D
MHz typ
@0.1 dB
DC ACCURACY
Resolution
14
Bits
Integral Nonlinearity
2
T B D
LSB max
± 1
LSB typ
Differential Nonlinearity
2
T B D
LSB max
Guaranteed No Missed Codes to 14 bits
± 1
LSB typ
Offset Error
2
±1.5
LSB max
Gain Error
2
±1.5
LSB max
ANALOG INPUT
Input Voltage
-200
mV min
+2.7
Volts max
DC Leakage Current
T B D
µA max
Input Capacitance
10
pF typ
REFERENCE INPUT/OUTPUT
VREF Input Voltage
+2.5
Volts
±1% for specified performance
VREF Input DC Leakage Current
± 1
µA max
VREF Input Capacitance
T B D
pF max
VREF Output Voltage
+2.5
V nom
VREF Error @ 25°C
T B D
mV max
VREF Error TMIN to TMAX
T B D
mV max
VREF Output Impedance
T B D
k
typ
LOGIC INPUTS
Input High Voltage, VINH
T B D
V min
Input Low Voltage, VINL
0.4
V max
Input Current, IIN
T B D
µA max
Input Capacitance, CIN
2
T B D
pF max
LOGIC OUTPUTS
Output High Voltage, VOH
VDRIVE - 0.2
V min
Output Low Voltage, VOL
0.4
V max
Floating-State Leakage Current
T B D
µA max
Floating-State Output Capacitance
2,3
T B D
pF max
Output Coding
Straight (Natural) Binary
CONVERSION RATE
Conversion Time
T B D
ns max
Track/Hold Acquisition Time
T B D
ns max
Sine Wave Input
T B D
ns max
Full-Scale Step Input
Throughput Rate
3
MSPS max
POWER REQUIREMENTS
VDD
+ 5
Volts
± 5 %
VDRIVE
+2.7
V min
+5.25
V max
IDD
Normal Mode (Static)
T B D
mA typ
Normal Mode (Operational)
18
mA typ
NAP Mode
1
mA typ
Standby Mode
1
µA max


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