AD7156BCPZ-REEL7 Analog Devices Inc, AD7156BCPZ-REEL7 Datasheet - Page 9

• Manufacturer Part Number: AD7156BCPZ-REEL7
• Description: IC CDC 2CH 12BIT 1.8V 10LFCSP
• Manufacturer: Analog Devices Inc
• Type: Capacitance-to-Digital Converterr

Specifications of AD7156BCPZ-REEL7

• Resolution (bits): 12 b
• Data Interface: Serial
• Sampling Rate (per Second): 100k
• Voltage Supply Source: Single Supply
• Voltage - Supply: 1.8 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-LFCSP
• Sampling Rate: 100SPS
• Input Channel Type: Single Ended
• Supply Voltage Range - Analog: 1.8V To 3.6V
• Supply Current: 70µA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: AD7156BCPZ-REEL7TR

Figure 12. Capacitance Input Gain Error vs. Resistance EXC to GND,
Figure 10. Capacitance Input Gain Error vs. Resistance CIN to GND,
Figure 11. Capacitance Input Gain Error vs. Resistance CIN to GND,
–0.2
–0.4
–0.6
–0.8
–1.0
–10
–10
0.2
–2
–4
–6
–8
–2
–4
–6
–8
2
0
2
0
0
0.1
1
1
V
V
V
3.3V
3.3V
DD
DD
1.8V
DD
= 1.8 V and 3.3 V, CIN to EXC = 3 pF
= 1.8 V and 3.3 V, CIN to EXC = 9 pF
= 1.8 V and 3.3 V, CIN to EXC = 3 pF
RESISTANCE EXC TO GROUND (MΩ)
1
RESISTANCE CIN TO GND (MΩ)
RESISTANCE CIN TO GND (MΩ)
10
10
1.8V
1.8V
3.3V
10
100
100
100
1k
1k
1k
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Figure 13. Capacitance Input Gain Error vs. Resistance EXC to GND,
Figure 15. Capacitance Input Gain Error vs. Parallel Resistance,
–0.2
–0.4
–0.6
–0.8
–1.0
Figure 14. Capacitance Input Gain Error vs. Serial Resistance,
–10
–20
–30
–40
–50
0.2
–1
–2
–3
–4
–5
–6
–7
10
0
1
0
0
0.1
0
1
1.8V
V
V
V
3.3V
DD
DD
DD
= 1.8 V and 3.3 V, CIN to EXC = 9 pF
20
= 1.8 V and 3.3 V, CIN to EXC = 3 pF
= 1.8 V and 3.3 V, CIN to EXC = 3 pF
RESISTANCE EXC TO GROUND (MΩ)
1
3.3V
PARELLEL RESISTANCE (MΩ)
SERIAL RESISTANCE (kΩ)
10
1.8V
40
10
1.8V
60
100
100
80
3.3V
AD7156
100
1k
1k