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AD7152BRMZ 数据表(PDF) 3 Page - Analog Devices

部件名 AD7152BRMZ
功能描述  12-Bit Capacitance-to-Digital Converter
Download  24 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD7152BRMZ 数据表(HTML) 3 Page - Analog Devices

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Data Sheet
AD7152/AD7153
Rev. A | Page 3 of 24
SPECIFICATIONS
VDD = 2.7 V to 3.6 V; GND = 0 V; −40°C to +85°C, unless otherwise noted.
Table 1.
Parameter
Min
Typ
Max
Unit1
Test Conditions/Comments
CAPACITIVE INPUT
Capacitive Input Ranges
±2
pF
Differential mode
±1
pF
±0.5
pF
±0.25
pF
4
pF
Single-ended mode
2
pF
1
pF
0.5
pF
Gain Matching Between Ranges
±3
% of FS
Integral Nonlinearity (INL)2
±0.05
% of FS
No Missing Codes2
12
Bits
Resolution, p-p2, 3
10
Bits
25°C, VDD = 3.3 V, 4 pF range
Resolution Effective2, 3
12
Bits
25°C, VDD = 3.3 V, 4 pF range
Absolute Error4
±20
fF
25°C, VDD = 3.3 V, after system offset
calibration, ±2 pF range
System Offset Calibration Range5, 6
40
% of FSR
Offset Deviation over Temperature2
1
5
fF
Single-ended mode, CIN and EXC
pins disconnected, see Figure 8
0.3
1
fF
Differential mode, CIN and EXC
pins disconnected
Gain Error7
0.5
% of FSR
25°C, VDD = 3.3 V
Gain Deviation over Temperature2
0.3
0.4
% of FSR
See Figure 7
Allowed Capacitance, CIN to GND2
50
pF
See Figure 9 and Figure 10
Allowed Resistance, CIN to GND2
10
MΩ
See Figure 13
Allowed Serial Resistance2
20
kΩ
See Figure 16
Power Supply Rejection DC
2
fF/V
See Figure 17
Normal-Mode Rejection2
−70
dB
50 Hz ± 1 Hz, conversion time = 60 ms
−70
dB
60 Hz ± 1 Hz, conversion time = 50 ms
Channel-to-Channel Isolation2
−70
dB
AD7152 only
CAPDAC
Full Range
5
6.25
pF
Resolution8
200
fF
5-bit CAPDAC
Differential Nonlinearity (DNL)2
0.25
LSB
See Figure 18 and Figure 19
Offset Deviation over Temperature2
0.3
% of CAPDAC FSR
Single-ended mode
EXCITATION
Frequency
30.9
32
32.8
kHz
Voltage
±VDD/2
V
Allowed Capacitance, EXC to GND2
300
pF
See Figure 11 and Figure 12
SERIAL INTERFACE LOGIC INPUTS (SCL, SDA)
Input High Voltage, VIH
1.5
V
Input Low Voltage, VIL
0.8
V
Input Leakage Current (SCL)
±0.1
±5
µA
OPEN-DRAIN OUTPUT (SDA)
Output Low Voltage, VOL
0.4
V
ISINK =
6.0 mA
Output High Leakage Current, IOH
0.1
5
µA
VOUT = VDD
POWER SUPPLY MONITOR
Threshold Voltage, VDD
2.45
2.65
V


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