AD7298-1BCPZ Analog Devices Inc, AD7298-1BCPZ Datasheet - Page 10

• Manufacturer Part Number: AD7298-1BCPZ
• Description: 8Channel 10Bit SAR
• Manufacturer: Analog Devices Inc

Specifications of AD7298-1BCPZ

• Number Of Bits: 10
• Sampling Rate (per Second): 1M
• Data Interface: Serial, SPI™
• Number Of Converters: 1
• Power Dissipation (max): 23mW
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 20-WFQFN, CSP Exposed Pad
• Resolution (bits): 10bit
• Sampling Rate: 1MSPS
• Input Channel Type: Single Ended
• Supply Voltage Range - Analog: 1.65V To 3.6V
• Digital Ic Case Style: LFCSP
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD7298-1
Figure 10. PSRR vs. Supply Ripple Frequency Without Supply Decoupling
–100
–102
–104
–106
–108
–110
–90
–92
–94
–96
–98
110
105
100
3.0
2.5
2.0
1.5
1.0
95
90
85
80
75
70
1k
0
0
V
V
V
Figure 11. Channel-to-Channel Isolation, f
DD
DRIVE
DD
Figure 9. V
50
= 3V
= V
0.5
= 3V
DRIVE
100
10k
1.0
= 3V
REF
150
RIPPLE FREQUENCY (Hz)
vs. Reference Output Current Drive
1.5
CURRENT LOAD (mA)
200
100k
f
NOISE
2.0
250
(kHz)
300
2.5
1M
350
3.0
400
3.5
IN
10M
= 50 kHz
450
4.0
500
100M
550
4.5
Rev. A | Page 10 of 24
Figure 12. SINAD vs. Analog Input Frequency for Various Source Impedances
62.00
61.75
61.50
61.25
61.00
60.75
60.50
62.0
61.5
61.0
60.5
60.0
59.5
59.0
58.5
58.0
–80
–81
–82
–83
–84
–85
–86
–87
–88
–89
–90
1.0
10
1.0
V
V
V
V
DD
DRIVE
DD
DRIVE
R
R
R
R
R
R
= 3V
= 3V
SOURCE
SOURCE
SOURCE
SOURCE
SOURCE
SOURCE
Figure 13. SINAD vs. Reference Voltage
= 3V
= 3V
Figure 14. THD vs. Reference Voltage
EXTERNAL REFERENCE VOLTAGE (V)
EXTERNAL REFERENCE VOLTAGE (V)
= 0Ω
= 10Ω
= 33Ω
= 47Ω
= 100Ω
= 200Ω
INPUT FREQUENCY (kHz)
1.5
1.5
100
2.0
2.0
V
V
DD
DRIVE
= 3V
= 3V
2.5
2.5