AD7273 Analog Devices, AD7273 Datasheet - Page 11

• Manufacturer Part Number: AD7273
• Description: 3 MSPS 10-Bit ADC in TSOT and MSOP Packages
• Manufacturer: Analog Devices

Specifications of AD7273

• Resolution (bits): 10bit
• # Chan: 1
• Sample Rate: 3MSPS
• Interface: Ser,SPI
• Analog Input Type: SE-Uni
• Ain Range: (Vref) p-p,Uni (Vref)
• Adc Architecture: SAR
• Pkg Type: SOP,SOT

TYPICAL PERFORMANCE CHARACTERISTICS
Figure 10. AD7274 Dynamic Performance at 3 MSPS, Input Tone = 1 MHz
Figure 11. AD7273 Dynamic Performance at 3 MSP, Input Tone = 1 MHz
–100
–120
–100
–120
Figure 12. AD7274 SINAD vs. Analog Input Frequency at 3 MSPS
72.2
72.0
71.8
71.6
71.4
71.2
71.0
70.8
70.6
70.4
70.2
70.0
69.8
69.6
69.4
69.2
69.0
–20
–40
–60
–80
–20
–40
–60
–80
100
for Various Supply Voltages, SCLK Frequency = 48 MHz
16384 POINT FFT
F
F
SINAD = 71.05
THD = –80.9
SFDR = –82.2
16384 POINT FFT
F
F
SINAD = 66.56
THD = –77.4
SFDR = –78.2
SAMPLE
IN
SAMPLE
IN
= 1MHz
= 1MHz
= 3MSPS
= 3MSPS
INPUT FREQUENCY (kHz)
FREQUENCY (kHz)
FREQUENCY (kHz)
V
DD
F
= 2.5V
SAMPLE
V
V
1000
DD
DD
= 3MSPS
= 3.6V
= 3V
1500
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Figure 15. THD vs. Analog Input Frequency at 3 MSPS for Various Source
72.2
72.0
71.8
71.6
71.4
71.2
71.0
70.8
70.6
70.4
70.2
–72
–74
–76
–78
–80
–82
–84
–86
–88
–90
–40
–50
–60
–70
–80
–90
Figure 13. AD7274 SNR vs. Analog Input Frequency at 3 MSPS
Impedance, SCLK Frequency = 48 MHz, Supply Voltage = 3 V
100
100
100
for Various Supply Voltages, SCLK Frequency = 48 MHz
for Various Supply Voltages, SCLK Frequency = 48 MHz
Figure 14. THD vs. Analog Input Frequency at 3 MSPS
INPUT FREQUENCY (kHz)
INPUT FREQUENCY (kHz)
INPUT FREQUENCY (kHz)
V
R
DD
V
IN
DD
V
= 3.6V
DD
= 100 Ω
= 3V
= 2.5V
R
IN
AD7273/AD7274
= 10 Ω
V
F
SAMPLE
DD
= 3V
R
V
V
1000
1000
1000
IN
= 3MSPS
DD
DD
= 0 Ω
= 3.6V
= 2.5V
1500
1500
1500