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AD7147WPACPZ-1RL Arkusz danych(PDF) 5 Page - Analog Devices

Numer części AD7147WPACPZ-1RL
Szczegółowy opis  CapTouch Programmable Controller
Download  71 Pages
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Producent  AD [Analog Devices]
Strona internetowa  http://www.analog.com
Logo AD - Analog Devices

AD7147WPACPZ-1RL Arkusz danych(HTML) 5 Page - Analog Devices

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AD7147
Data Sheet
SPECIFICATIONS
VCC = 2.6 V to 3.6 V, TA = −40oC to +85°C, unless otherwise noted.
Table 1.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
CAPACITANCE-TO-DIGITAL CONVERTER
Update Rate
8.73
9
9.27
ms
12 conversion stages, decimation = 64
17.46
18
18.54
ms
12 conversion stages, decimation = 128
34.9
36
37.1
ms
12 conversion stages, decimation = 256
Resolution
16
Bits
CINx Input Range
±8
pF
No Missing Codes
16
Bits
Guaranteed by design, but not production
tested
CINx Input Leakage
25
nA
Maximum Output Load
20
pF
Capacitance load on CINx to ground
Total Unadjusted Error
±20
%
Output Noise (Peak-to-Peak)
12
Codes
Decimation rate = 64
7
Codes
Decimation rate = 128
3
Codes
Decimation rate = 256
Output Noise (RMS)
1.1
Codes
Decimation rate = 64
0.8
Codes
Decimation rate = 128
0.5
Codes
Decimation rate = 256
CSTRAY Offset Range
20
pF
CSTRAY Offset Resolution
0.32
pF
Low Power Mode Delay Accuracy
4
%
Percentage of 200 ms, 400 ms, 600 ms,
or 800 ms
ACSHIELD
Frequency
250
kHz
Output Voltage
0
VCC
V
Oscillating
Short-Circuit Source Current
10
mA
Short-Circuit Sink Current
10
mA
Maximum Output Load
150
pF
Capacitance load on ACSHIELD to ground
LOGIC INPUTS (SDI, SCLK, CS, SDA, GPIO)
VIH Input High Voltage
0.7 × VDRIVE
V
VIL Input Low Voltage
0.4
V
IIH Input High Current
−1
µA
VIN = VDRIVE
IIL Input Low Current
1
µA
VIN = GND
Hysteresis
150
mV
OPEN-DRAIN OUTPUTS (SCLK, SDA, INT)
VOL Output Low Voltage
0.4
V
ISINK = −1 mA
IOH Output High Leakage Current
±0.1
±1
µA
VOUT = VDRIVE
LOGIC OUTPUTS (SDO, GPIO)
VOL Output Low Voltage
0.4
V
ISINK = 1 mA, VDRIVE = 1.65 V to 3.6 V
VOH Output High Voltage
VDRIVE − 0.6
V
ISOURCE = 1 mA, VDRIVE = 1.65 V to 3.6 V
GPIO, SDO Floating State Leakage
Current
±1
µA
Pin three-state, leakage measured to
GND and VCC
POWER
VCC
2.6
3.3
3.6
V
VDRIVE
1.65
3.6
V
Serial interface operating voltage
ICC
0.9
1
mA
In full power mode, VCC + VDRIVE
15.5
21.5
µA
Low power mode, converter idle, VCC + VDRIVE,
decimation = 256
2.3
7.5
µA
Full shutdown, VCC + VDRIVE
Rev. E | Page 4 of 70


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