EVAL-AD7291SDZ Analog Devices Inc, EVAL-AD7291SDZ Datasheet - Page 8

• Manufacturer Part Number: EVAL-AD7291SDZ
• Description: Evaluation Control Board
• Manufacturer: Analog Devices Inc
• Series: -r

Specifications of EVAL-AD7291SDZ

• Rohs Compliant: YES
• Silicon Manufacturer: Analog Devices
• Kit Application Type: Interface
• Application Sub Type: ADC
• Features: Channel Sequencer Operation, Alert Function, Autocycle Mode
• Number Of Adc's: 8
• Number Of Bits: 12
• Sampling Rate (per Second): 22.22k
• Data Interface: I²C
• Input Range: -
• Power (typ) @ Conditions: -
• Operating Temperature: -
• Utilized Ic / Part: AD7291
• Silicon Core Number: AD7291
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

AD7291
TYPICAL PERFORMANCE CHARACTERISTICS
–0.2
–0.4
–0.6
–0.8
–1.0
–0.2
–0.4
–0.6
–0.8
–1.0
–100
–120
–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
f
f
S
SCL
V
f
f
f
SNR = 71.209
THD = –81.66
A
DRIVE
REF
DD
S
SCL
IN
DD
= 22.22ksps
= 25°C
= 22.22ksps
= 10kHz
500
500
= 3V
= 400kHz
= V
= 2.5V
= 400kHz
= 3V
DRIVE
2k
1000
1000
Figure 6. Typical ADC DNL
Figure 5. Typical ADC INL
= 3V
Figure 4. Typical FFT
1500
1500
4k
FREQUENCY (Hz)
ADC CODE
ADC CODE
2000
2000
6k
2500
2500
3000
3000
8k
T
V
V
V
f
f
S
SCL
A
3500
DRIVE
REF
DD
3500
= 22.22ksps
= 25°C
= 3V
= 400kHz
= 2.5V
= 3V
10k
4096
4096
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11.7
11.6
11.5
11.4
11.3
11.2
–0.2
–0.4
–0.6
–0.8
–1.0
–0.2
–0.4
–0.6
–0.8
–1.0
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
Figure 9. Effective Number of Bits vs. V
T
V
V
f
f
S
SCL
T
V
V
f
f
A
DRIVE
DD
S
SCL
A
= 22.22ksps
DRIVE
DD
= 25°C
= 22.22ksps
= 25°C
= 3V
= 400kHz
= 3V
= 400kHz
0.5
0.5
= 3V
0.5
= 3V
Figure 8. DNL vs. External V
Figure 7. INL vs. External V
EXTERNAL REFERENCE (V)
1.0
1.0
1.0
V
V
REF
REF
1.5
1.5
(V)
(V)
1.5
2.0
2.0
REF
REF
INL (POSITIVE)
INL (NEGATIVE)
DNL (POSITIVE)
DNL (NEGATIVE)
REF
, f
SCL
2.0
= 400 kHz
2.5
2.5
2.5
3.0
3.0