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AD7492AR Arkusz danych(PDF) 5 Page - Analog Devices

Numer części AD7492AR
Szczegółowy opis  1.25 MSPS, 16 mW Internal REF and CLK, 12-Bit Parallel ADC
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Producent  AD [Analog Devices]
Strona internetowa  http://www.analog.com
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AD7492AR Arkusz danych(HTML) 5 Page - Analog Devices

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AD7492
Rev. A | Page 5 of 24
Parameter
A Version2
B Version2
Unit
Test Conditions/Comments
DC ACCURACY
fS = 1 MSPS for AD7492
fS = 400 kSPS for AD7492-4
Resolution
12
12
Bits
Integral Nonlinearity
±1.5
LSB max
±0.6
LSB typ
VDD = 5 V
±1
LSB max
VDD = 3 V
Differential Nonlinearity
+1.5/−0.9
+1.5/−0.9
LSB max
Guaranteed no missed codes to
12 bits (A and B versions)
Offset Error
±9
±9
LSB max
Gain Error
±2.5
±2.5
LSB max
ANALOG INPUT
Input Voltage Ranges
0 to 2.5
0 to 2.5
V
DC Leakage Current
±1
±1
μA max
Input Capacitance
33
33
pF typ
REFERENCE OUTPUT
REF OUT Output Voltage Range
2.5
2.5
V
±1.5% for specified performance
LOGIC INPUTS
Input High Voltage, VINH4
VDRIVE × 0.7
VDRIVE × 0.7
V min
VDD = 5 V ± 5%
Input Low Voltage, VINL4
VDRIVE × 0.3
VDRIVE × 0.3
V max
VDD = 5 V ± 5%
Input Current, IIN
±1
±1
μA max
Typically 10 nA, VIN = 0 V or VDD
Input Capacitance, CIN3, 5
10
10
pF max
LOGIC OUTPUTS
Output High Voltage, VOH
VDRIVE − 0.2
VDRIVE − 0.2
V min
ISOURCE = 200 μA
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
10
10
pF max
Output Coding
Straight (Natural)
Binary
Straight (Natural)
Binary
CONVERSION RATE
Conversion Time
880
880
ns max
Track/Hold Acquisition Time
120
120
ns min
Throughput Rate
1
400
1
MSPS max
kSPS max
Conversion time + acquisition
time for AD7492
Conversion time + acquisition
time for AD7492-4
POWER REQUIREMENTS
VDD
2.7/5.25
2.7/5.25
V min/max
IDD
Digital I/Ps = 0 V or DVDD.
Normal Mode
3
3
mA max
fS = 1 MSPS, typ 2.2 mA
fS = 400 kSPS, Typ 2.2 mA
(AD7492-4)
Quiescent Current
1.8
1.8
mA max
Partial Sleep Mode
250
250
μA max
Static, typ 190 μA
Full Sleep Mode
1
1
μA max
Static, typ 200 nA
Power Dissipation4, 6
Digital I/Ps = 0 V or DVDD
Normal Mode
15
15
mW max
VDD = 5 V
Partial Sleep Mode
1.25
1.25
mW max
VDD = 5 V
Full Sleep Mode
5
5
μW max
VDD = 5 V
1 Only A version specification applies to the AD7492-4.
2 Temperature ranges as follows: A and B versions: −40°C to +85°C.
3 500 kHz sine wave specifications do not apply for the AD7492-4.
4 VINH and VINL trigger levels are set by the VDRIVE voltage. The logic interface circuitry is powered by VDRIVE.
5 Sample tested @ 25°C to ensure compliance.
6 See the Power vs. Throughput section.


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