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AD7450AR Folha de dados(PDF) 7 Page - Analog Devices

Nome de Peças AD7450AR
Descrição Electrónicos  Differential Input, 1MSPS, 12-Bit ADC in 關SO-8 and S0-8
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Fabricante Electrônico  AD [Analog Devices]
Página de início  http://www.analog.com
Logo AD - Analog Devices

AD7450AR Folha de dados(HTML) 7 Page - Analog Devices

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REV. PrJ
PRELIMINARY TECHNICAL DATA
–7–
AD7450
PERFORMANCE CURVES
TPC 1 and TPC 2 show the typical FFT plots for the
AD7450 with VDD of 5V and 3V, 1MHz and 833kHz sam-
pling frequency respectively and an input frequency of
300kHz.
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FREQUENCY (kHz)
8192 POINT FFT
FSAMPLE = 1MSPS
FIN = 300kHz
SINAD = 71.7dB
THD = -82.8dB
SFDR = -85.3dB
TPC 1. AD7450 Dynamic Performance at 1MSPS
with VDD =5V
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FREQUENCY (kHz)
8192 POINT FFT
fSAMPLE = 833ksps
fIN = 300kHz
SINAD = 70.2dB
THD = -86dB
SFDR = -87.1dB
TPC 2. AD7450 Dynamic Performance at 833ksps with
VDD = 3V
TPC 3 shows the signal-to-(noise+distortion) ratio
performance versus the analog input frequency for
various supply voltages while sampling at 1MSPS
(VDD = 5V±5%) and 833kSPS (VDD = 3V±10%).
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TPC 3. SINAD vs Analog Input Frequency
for Various Supply Voltages TBD
TPC 4 shows the power supply rejection ratio versus
supply ripple frequency for the AD7450.
Here, a
200mV p-p sine wave is coupled onto the VDD supply.
A 10nF decoupling capacitor was used on the supply
and a 1µF decoupling capacitor was used on VREF.
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TPC 4. Power Supply Rejection (see Terminology Sec-
tion) vs. Supply Ripple Frequency at 5V and 3V TBD


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