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AD7933 Datasheet(PDF) 5 Page - Analog Devices

Part # AD7933
Description  4-Channel, 1.5 MSPS, 12-Bit and 10-Bit Parallel ADCs with a Sequencer
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7933 Datasheet(HTML) 5 Page - Analog Devices

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Preliminary Technical Data
AD7933/AD7934
AD7934—SPECIFICATIONS
VDD = VDRIVE = 2.7 V to 5.25 V, Internal/External VREF = 2.5 V, unless otherwise noted, FCLKIN = 24 MHz, FSAMPLE = 1.5 MSPS; TA = TMIN to
TMAX, unless otherwise noted.
Table 2.
Parameter
B Version1
Unit
Test Conditions/Comments
DYNAMIC PERFORMANCE
FIN = 50 kHz sine wave
Signal-to-Noise + Distortion (SINAD)2
70
dB min
Signal-to-Noise Ratio (SNR)2
70
dB min
Total Harmonic Distortion (THD)2
−75
dB max
−80 dB typ
Peak Harmonic or Spurious Noise (SFDR)2
−75
dB max
−82 dB typ
Intermodulation Distortion (IMD)2
fa = 40.1 kHz, fb = 51.5 kHz
Second-Order Terms
−85
dB typ
Third-Order Terms
−85
dB typ
Channel-to-Channel Isolation
−85
dB typ
Aperture Delay2
5
ns typ
Aperture Jitter2
50
ps typ
Full Power Bandwidth2, 3
20
MHz typ
@ 3 dB
2.5
MHz typ
@ 0.1 dB
DC ACCURACY
Resolution
12
Bits
Integral Nonlinearity2
±1
LSB max
Differential Nonlinearity2
±0.95
LSB max
Guaranteed no missed codes to 12 bits
Total Unadjusted Error
TBD
LSB max
Single-Ended and Pseudo-Differential Input
Straight binary output coding
Offset Error2
±4.5
LSB max
Offset Error Match2
±0.5
LSB max
Gain Error2
±2
LSB max
Gain Error Match2
±0.6
LSB max
Fully Differential Input
Twos complement output coding
Positive Gain Error2
±2
LSB max
Positive Gain Error Match2
±0.6
LSB max
Zero-Code Error2
±3
LSB max
Zero-Code Error Match2
±1
LSB max
Negative Gain Error2
±2
LSB max
Negative Gain Error Match2
±0.6
LSB max
ANALOG INPUT
Single-Ended Input Range
0 to VREF or 0 to 2 × VREF
V
Depending on RANGE bit setting
Pseudo-Differential Input Range: VIN+
0 to VREF or 2 × VREF
V
Depending on RANGE bit setting
VIN−
−0.1 to +0.4
V
Fully Differential Input Range: VIN+ and VIN−
VCM ± VREF/2
V
VCM = common-mode voltage4 = VREF/2
VIN+ and VIN−
VCM ± VREF
V
VCM = VREF, VIN+ or VIN− must remain within GND/VDD
DC Leakage Current5
±1
µA max
Input Capacitance
45
pF typ
When in track
10
pF typ
When in hold
REFERENCE INPUT/OUTPUT
VREF Input Voltage6
2.5
V
±1% specified performance
DC Leakage Current
±1
µA max
VREF Input Impedance
10
kΩ typ
VREFOUT Output Voltage
2.5
V
±0.1% @ 25°C
VREFOUT Temperature Coefficient
15
ppm/°C typ
VREF Noise
10
µV typ
0.1 Hz to 10 Hz bandwidth
130
µV typ
0.1 Hz to 1 MHz bandwidth
Rev. PrG | Page 5 of 32


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