参数资料
型号: AD7156BCPZ-REEL
厂商: Analog Devices Inc
文件页数: 11/28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 19 of 28
SETUP REGISTERS
Ch 1 Address Pointer 0x0B
Ch 2 Address Pointer 0x0E
8 Bits, Read/Write, Factory Preset 0x0B
Table 10. Setup Registers Bit Map1
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
RngH
RngL
Hyst
ThrSettling (4-Bit Value)
(0)
(0x0B)
1 The default values are given in parentheses.
Table 11. Setup Registers Bit Descriptions
Bit
Mnemonic
Description
Range bits set the CDC input range and determine the step for the auto-DAC function.
7
6
RngH
RngL
RngH
RngL
Capacitive Input Range (pF)
Auto-DAC Step (CAPDAC LSB)
0
2
4
0
1
0.5
1
0
1
2
1
4
8
5
This bit should be 0 for the specified operation.
4
Hyst
Hyst = 1 disables hysteresis in adaptive threshold mode. This bit has no effect in fixed threshold mode;
hysteresis is always disabled in the fixed threshold mode.
[3:0]
ThrSettling
Determines dynamic behavior of the data average and thus the settling time of the adaptive thresholds. Data
average is calculated from the previous CDC output data, using equation:
1
2
)
1
(
)
(
)
1
(
)
(
+
+
=
g
ThrSettlin
N
Average
N
Data
N
Average
N
Average
where:
Average(N) is the new average value.
Average(N 1) is the average value from the previous cycle.
Data(N) is the latest complete CDC conversion result.
ThrSettling is the programmable parameter.
The response of the average to an input capacitance step change (that is, response to the change in the CDC
output data) is an exponential settling curve characterized by the following equation:
)
1
(
)
0
(
)
(
/ TimeConst
N
e
Change
Average
N
Average
+
=
where:
Average(N) is the value of average N complete CDC conversion cycles after a step change on the input.
Average(0) is the value before the step change.
TimeConst can be selected in the range between 2 and 65,536 conversion cycle multiples, in steps of power of
2, by programming the ThrSettling bits. TimeConst = 2(ThrSettling + 1)
INPUT CAPACITANCE
(CDC DATA) CHANGE
DATA AVERAGE RESPONSE
TIME
07
72
6-
0
4
9
Figure 39. Data Average Response to Data Step Change
相关PDF资料
PDF描述
AD7224CQ IC DAC 8BIT W/AMP 18-CDIP
AD723ARUZ-REEL7 IC ENCODER RGB-NTSC/PAL 28-TSSOP
AD7247BQ IC DAC 12BIT W/AMP W/BUFF 24CDIP
AD724JR IC ENCODER RGB TO NTSC 16-SOIC
AD725ARZ-R7 IC ENCODER RGB TO NTSC 16-SOIC
相关代理商/技术参数
参数描述
AD7156BCPZ-REEL7 功能描述:IC CDC 2CH 12BIT 1.8V 10LFCSP RoHS:是 类别:集成电路 (IC) >> 数据采集 - ADCs/DAC - 专用型 系列:- 产品培训模块:Data Converter Basics 标准包装:1 系列:- 类型:电机控制 分辨率(位):12 b 采样率(每秒):1M 数据接口:串行,并联 电压电源:单电源 电源电压:2.7 V ~ 3.6 V,4.5 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:100-TQFP 供应商设备封装:100-TQFP(14x14) 包装:剪切带 (CT) 其它名称:296-18373-1
AD7160ACBZ-U3 制造商:Analog Devices 功能描述:
AD7161BCDZ-1WP 制造商:Analog Devices 功能描述:
AD7166ACPZ-RL7 制造商:Analog Devices 功能描述:- Tape and Reel
AD-716J4310J-1 功能描述:Adapter Coaxial Connector 7/16 Jack, Female Socket To 4.3/10 Jack, Female Socket 50 Ohm 制造商:amphenol-rf division 系列:- 包装:散装 零件状态:有效 适配器类型:插孔至插孔 适配器系列:7/16 DIN 至 4.3/10 中性:母形至母形 转换自(适配器端):7/16 插孔,母插口 转换至(适配器端):4.3/10 插孔,母插口 转换类型:跨系列 阻抗:50 欧姆 样式:直形 安装类型:自由悬挂 频率 - 最大值:6GHz 侵入防护:- 特性:- 基体材料:黄铜 基体表面:白青铜 介电材料:聚四氟乙烯(PTFE) 中心触头材料:铜铍 中心触头镀层:银 配接次数:500 标准包装:25