VCC = 2.6 V to 3.6 V, T
參數(shù)資料
型號: AD7147WPACPZ-500R7
廠商: Analog Devices Inc
文件頁數(shù): 45/73頁
文件大小: 0K
描述: IC CAP-TO-DGTL CONV PROG 24LFCSP
標準包裝: 500
系列: CapTouch™
類型: 電容數(shù)字轉換器
分辨率(位): 16 b
采樣率(每秒): 250k
數(shù)據(jù)接口: 串行,SPI?
電壓電源: 單電源
電源電壓: 2.6 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 24-VFQFN 裸露焊盤,CSP
供應商設備封裝: 24-LFCSP-VQ(4x4)
包裝: 帶卷 (TR)
AD7147
Data Sheet
Rev. D | Page 4 of 72
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
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