参数资料
型号: AD7156BCPZ-REEL
厂商: Analog Devices Inc
文件页数: 22/28页
文件大小: 0K
描述: IC CDC 2CH 12BIT 1.8V 10-LFCSP
标准包装: 5,000
类型: 电容数字转换器
分辨率(位): 12 b
采样率(每秒): 100k
数据接口: 串行
电压电源: 单电源
电源电压: 1.8 V ~ 3.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 10-WFDFN 裸露焊盘,CSP
供应商设备封装: 10-LFCSP-WD(3x3)
包装: 带卷 (TR)
AD7156
Rev. 0 | Page 3 of 28
SPECIFICATIONS
VDD = 1.8 V to 3.6 V, GND = 0 V, temperature range = 40°C to +85°C, unless otherwise noted.
Table 1.
Parameter
Min
Typ
Max
Test Conditions/Comments
CAPACITIVE INPUT
Conversion Input Range, CIN to EXC2, 3
3.2
4
pF
4 pF input range
1.6
2
pF
2 pF input range
0.8
1
pF
1 pF input range
0.4
0.5
pF
0.5 pF input range
2.0
fF
4 pF input range
1.6
fF
2 pF input range
1.4
fF
1 pF input range
1.0
fF
0.5 pF input range
Maximum Allowed Capacitance, CIN to GND4, 6
50
pF
See Figure 4, Figure 5, and
Minimum Allowed Resistance, CIN to GND4, 6
10
Maximum Allowed Serial Resistance4, 6
50
Gain Error
20
+20
%
Gain Deviation over Temperature4
0.5
%FSR
Gain Matching Between Ranges4
2
+2
%
Offset Error4
50
fF
CIN and EXC pins disconnected
Offset Deviation over Temperature4
5
fF
CIN and EXC pins disconnected
Integral Nonlinearity (INL)4
0.05
%
Channel-to-Channel Isolation4
60
dB
Power Supply Rejection4
4
fF/V
CAPDAC
Full Range
10
12.5
pF
Resolution (LSB)4
200
fF
Differential Nonlinearity (DNL)4
0.25
LSB
Auto-DAC Increment/Decrement4, 7
25
75
% of CIN range
EXCITATION
Voltage4, 7
±VDD/2
V
Frequency
16
kHz
Maximum Allowed Capacitance EXC to GND4, 6
1000
pF
See Figure 7, Figure 8, and
Minimum Allowed Resistance EXC to GND4, 6
1
LOGIC OUTPUTS (OUT1, OUT2)
Output Low Voltage (VOL)
0.4
V
ISINK = 3 mA
Output High Voltage (VOH)
VDD – 0.6
V
ISOURCE = +3 mA
SERIAL INTERFACE INPUTS (SCL, SDA)
Input High Voltage (VIH)
70
% of VDD
Input Low Voltage (VIL)
25
% of VDD
Input Leakage Current
±0.1
±5
μA
Input Pin Capacitance
6
pF
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
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