AD7745ARUZ Analog Devices Inc, AD7745ARUZ Datasheet - Page 10

• Manufacturer Part Number: AD7745ARUZ
• Description: IC CONV 1CH CAP TO DGTL 16TSSOP
• Manufacturer: Analog Devices Inc
• Type: Capacitance-to-Digital Converterr

Specifications of AD7745ARUZ

• Design Resources: Extending the Capacitive Input Range of AD7745/AD7746 (CN0129)
• Resolution (bits): 24 b
• Data Interface: Serial
• Voltage Supply Source: Single Supply
• Voltage - Supply: 2.7 V ~ 5.25 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP
• Supply Current: 750µA
• Power Dissipation Pd: 4.25mW
• Inl ±: 100ppm
• Sample Rate: 90SPS
• Supply Voltage Max: 5.25V
• Input Channels Per Adc: 1
• No. Of Bits: 24 Bit
• Features: 24Bit Capacitance To Digital Convert I.C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Sampling Rate (per Second): -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

AD7745/AD7746
–100
–120
–0.5
–1.0
–1.5
–2.0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
Figure 19. External Temperature Sensor Error vs. Temperature
Figure 18. Internal Temperature Sensor Error vs. Temperature
–20
–40
–60
–80
2.0
1.5
1.0
0.5
1.0
0.5
0
0
0
–50
–50
0
Figure 20. Capacitance Channel Frequency Response,
100
–25
–25
200
INPUT SIGNAL FREQUENCY (Hz)
Conversion Time = 11 ms
0
0
300
TEMPERATURE (°C)
TEMPERATURE (°C)
25
25
400
500
50
50
600
75
75
700
100
100
800
125
125
900
1000
150
150
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–100
–120
–100
–120
–100
–120
–20
–40
–60
–80
–20
–40
–60
–80
–20
–40
–60
–80
0
0
0
0
Figure 21. Capacitance Channel Frequency Response,
0
Figure 22. Capacitance Channel Frequency Response,
0
Figure 23. Voltage Channel Frequency Response,
50
50
50
Conversion Time = 109.6 ms
Conversion Time = 122.1 ms
100
100
100
INPUT SIGNAL FREQUENCY (Hz)
Conversion Time = 62 ms
INPUT SIGNAL FREQUENCY (Hz)
INPUT SIGNAL FREQUENCY (Hz)
150
150
150
200
200
200
250
250
250
300
300
300
350
350
350
400
400
400