AD7621 Analog Devices, AD7621 Datasheet - Page 14

• Manufacturer Part Number: AD7621
• Description: 16-Bit, 2 LSB INL, 3 MSPS PulSAR® ADC
• Manufacturer: Analog Devices

Specifications of AD7621

• Resolution (bits): 16bit
• # Chan: 1
• Sample Rate: 3MSPS
• Interface: Byte,Par,Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p
• Adc Architecture: SAR
• Pkg Type: CSP,QFP

AD7621
16
14
12
10
Figure 17. SNR and SINAD vs. Input Level (Referred to Full Scale)
91.0
90.5
90.0
89.5
8
6
4
2
0
–55
Figure 18. Power-Down Operating Currents vs. Temperature
–60
–35
AVDD
–50
–15
SNR
SINAD
5
TEMPERATURE ( ° C)
–40
INPUT LEVEL (dB)
25
–30
45
65
–20
OVDD, 2.5V
OVDD, 3.3V
85
DVDD
–10
105
125
280
270
260
250
240
230
220
210
200
0
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100k
10k
100
0.1
20
18
16
14
12
10
1k
10
1
8
6
4
10
0
Figure 20. Typical Delay vs. Load Capacitance C
AVDD, WARP/NORMAL
AVDD, IMPULSE
DVDD, ALL MODES
Figure 19. Operating Current vs. Sample Rate
OVDD = 3.3V, ALL MODES
100
50
SAMPLING RATE (SPS)
1k
100
C
L
10k
(pF)
OVDD, 2.5V, ALL MODES
PDREF = PDBUF = HIGH
150
100M
OVDD = 2.5V @ 85°C
OVDD = 2.5V @ 25°C
OVDD = 3.3V @ 85°C
OVDD = 3.3V @ 25°C
1M
200
L
10M