EVAL-AD7142-1EB データシートの表示（PDF） - Analog Devices
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EVAL-AD7142-1EB
Analog Devices
EVAL-AD7142-1EB Datasheet PDF : 68 Pages
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SPECIFICATIONS
AVCC, DVCC = 2.6 V to 3.6 V, TA = −40oC to +85°C, unless otherwise noted.
Table 1.
Parameter
CAPACITANCE-TO-DIGITAL CONVERTER
Update Rate
Min
35.45
Typ Max
36.86 38.4
Resolution
CIN Input Range1
No Missing Codes
16
±2
16
CIN Input Leakage
Total Unadjusted Error
Output Noise (Peak-to-Peak)
Output Noise (RMS)
Parasitic Capacitance
25
±20
7
3
0.8
0.5
40
CBULK Offset Range1
CBULK Offset Resolution
Low Power Mode Delay Accuracy
EXCITATION SOURCE
Frequency
Output Voltage
Short-Circuit Source Current
Short-Circuit Sink Current
Maximum Output Load
CSHIELD Output Drive
CSHIELD Bias Level
LOGIC INPUTS (SDI, SCLK, CS, SDA, GPI TEST)
VIH Input High Voltage
VIL Input Low Voltage
IIH Input High Voltage
IIL Input Low Voltage
Hysteresis
OPEN-DRAIN OUTPUTS (SCLK, SDA, INT)
VOL Output Low Voltage
IOH Output High Leakage Current
LOGIC OUTPUTS (SDO, GPO)
VOL Output Low Voltage
VOH Output High Voltage
SDO Floating State Leakage Current
±20
156.25
4
240
250
260
AVCC
20
50
250
10
AVCC/2
0.7 x VDRIVE
0.4
−1
1
150
0.4
+0.1 ±1
0.4
VDRIVE − 0.6
±1
GPO Floating State Leakage Current
−5
+2
AD7142
Unit Test Conditions/Comments
ms
Bit
pF
Bit
nA
%
Codes
Codes
Codes
Codes
pF
pF
fF
%
12 conversion stages in sequencer,
decimation = 256
Guaranteed by design, but not production
tested
Decimation rate = 128
Decimation rate = 256
Decimation rate = 128
Decimation rate = 256
Parasitic capacitance to ground, per CIN input
guaranteed by characterization
% of 200 ms, 400 ms, 600 ms, or 800 ms
kHz
V
mA
mA
pF
Capacitance load on source to ground
μA
V
V
V
μA
VIN = VDRIVE
μA
VIN = DGND
mV
V
ISINK = −1 mA
μA
VOUT = VDRIVE
V
ISINK = 1 mA, VDRIVE = 1.65 V to 3.6 V
V
ISOURCE = 1 mA, VDRIVE = 1.65 V to 3.6 V
μA
Pin three-state, leakage measured to GND and
DVCC
μA
Pin three-state, leakage measured to GND and
DVCC
Rev. 0 | Page 3 of 68
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