AD7298BCPZ Analog Devices Inc, AD7298BCPZ Datasheet - Page 9

• Manufacturer Part Number: AD7298BCPZ
• Description: IC ADC 12BIT SPI/SRL 1M 20LFCSP
• Manufacturer: Analog Devices Inc

Specifications of AD7298BCPZ

• Data Interface: Serial, SPI™
• Featured Product: AD7298 ADC with Temperature Sensor
• Number Of Bits: 12
• Sampling Rate (per Second): 1M
• Number Of Converters: 1
• Power Dissipation (max): 22.7mW
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 20-WFQFN, CSP Exposed Pad
• Resolution (bits): 12bit
• Sampling Rate: 1MSPS
• Input Channel Type: Single Ended
• Supply Voltage Range - Digital: 1.65V To 3.6V
• Supply Current: 5.8mA
• Digital Ic Case: RoHS Compliant
• 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

TYPICAL PERFORMANCE CHARACTERISTICS
–100
–120
–0.2
–0.4
–0.6
–0.8
–1.0
–0.2
–0.4
–0.6
–0.8
–1.0
–20
–40
–60
–80
1.0
0.8
0.6
0.4
0.2
1.0
0.8
0.6
0.4
0.2
0
0
0
0
0
0
T
V
V
V
T
V
V
V
A
256
DRIVE
REF
DD
A
DRIVE
REF
DD
256
= 25°C
= 25°C
50
= 3 V
= 3 V
512
= 2.5V
512
= 2.5V
= 3V
= 3V
768
768
100
1024
1024
Figure 5. Typical ADC DNL
Figure 4.Typical ADC INL
150
1280
1280
Figure 3.Typical FFT
1536
1536
FREQUENCY (kHz)
200
1792
1792
CODE
CODE
2048
2048
250
2304
2304
300
2560
2560
V
f
f
f
SNR = 72.621
THD = –82.562
SAMPLE
IN
SCLK
DD
2816
2816
= 50kHz
350
= V
3072
= 20MHz
3072
DRIVE
= 1.17647MHz
3328
400
3328
= 3V
3584
3584
450
3840
3840
4096
4096
500
Rev. A | Page 9 of 24
0.6
0.4
0.2
0.2
0.4
0.6
–0.2
–0.4
–0.6
12
10
11
0
0.6
0.4
0.2
9
8
7
6
5
4
3
2
1.00
0
0
1.00
T
V
V
A
DRIVE
DD
T
V
V
= 25°C
A
DRIVE
DD
1.25
= 3V
Figure 8. Effective Number of Bits vs. V
= 25°C
1.25
= 3V
= 3V
0.5
= 3V
1.50
1.50
REFERENCE VOLTAGE (V)
Figure 7. DNL vs. V
Figure 6. INL vs. V
REFERENCE VOLTAGE (V)
1.0
1.75
1.75
V
INL MAX
REF
INL MIN
(V)
DNL MIN
DNL MAX
2.00
2.00
1.5
REF
REF
2.25
2.25
2.0
REF
V
V
DD
DRIVE
2.50
2.50
= 3V
AD7298
= 3V
2.75
2.5
2.75