参数资料
| 型号： | AD7152BRMZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 10/24页 |
| 文件大小： | 0K |
| 描述： | IC CDC 12BIT 2/4CH 10MSOP |
| 标准包装： | 3,000 |
| 类型： | 电容数字转换器 |
| 分辨率（位）： | 12 b |
| 数据接口： | 串行 |
| 电压电源： | 单电源 |
| 电源电压： | 2.7 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-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-MSOP |
| 包装： | 带卷 (TR) |
| 配用： | EVAL-AD7152EBZ-ND - BOARD EVAL AD7152 |
AD7152/AD7153
Rev. 0 | Page 18 of 24
CIRCUIT DESCRIPTION
DIGITAL
FILTER
12-BIT Σ-Δ
MODULATOR
CLOCK
GENERATOR
VOLTAGE
REFERENCE
AD7152
I2C
SERIAL
INTERFACE
07
45
0-
0
25
EXCITATION
EXC2
CIN1(+)
CIN1(–)
CIN2(+)
CIN2(–)
EXC1
SDA
SCL
VDD
GND
CONTROL LOGIC
CALIBRATION
CAP+
CAP–
MUX
CAPACITANCE-TO-DIGITAL CONVERTER (CDC)
Figure 27 shows the CDC simplified functional diagram. The
measured capacitance CX is connected between the excitation
source and the Σ-Δ modulator input. A square-wave excitation
signal is applied on the CX during the conversion and the mod-
ulator continuously samples the charge going through the CX.
The digital filter processes the modulator output, which is a
stream of 0s and 1s containing the information in 0 and 1
density. The data from the digital filter is scaled, applying the
calibration coefficients, and the final result can be read through
the serial interface. The AD7152/AD7153 are designed for
floating capacitive sensors. Therefore, both CX plates have to
be isolated from ground.
Figure 25. AD7152 Block Diagram
DIGITAL
FILTER
12-BIT Σ-Δ
MODULATOR
CLOCK
GENERATOR
VOLTAGE
REFERENCE
AD7153
I2C
SERIAL
INTERFACE
07
45
0-
02
6
EXCITATION
CIN1(+)
CIN1(–)
EXC1
SDA
SCL
VDD
GND
CONTROL LOGIC
CALIBRATION
CAP+
CAP–
MUX
DIGITAL
FILTER
12-BIT Σ-Δ
MODULATOR
CLOCK
GENERATOR
CAPACITANCE-TO-DIGITAL CONVERTER
(CDC)
07
45
0-
0
27
EXCITATION
DATA
EXC
CIN
CX
Figure 27. CDC Simplified Block Diagram
EXCITATION SOURCE
Figure 26. AD7153 Block Diagram
The AD7152/AD7153 have one excitation source. For the
AD7152, the excitation source is switched between the
excitation pins, EXC1 and EXC2, depending on which
channel performs a conversion.
The core of the AD7152/AD7153 is a precision converter
consisting of a second-order modulator (Σ-Δ or charge-
balancing) and a third-order digital filter.
In addition to the converter, the AD7152/AD7153 integrate a
multiplexer, an excitation source, and CAPDACs for the capaci-
tive inputs, a voltage reference, a complete clock generator, a
control and calibration logic, and an I2C-compatible serial
interface.
The AD7153 has one capacitive input, while the AD7152 has
two capacitive inputs. For the AD7152, the modulator input and
the excitation source are multiplexed between the converting
channel. All other features and specifications are identical for
both parts.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7153 | 制造商:AD 制造商全称:Analog Devices 功能描述:12-Bit Capacitance-to-Digital Converter |
| AD7153BRMZ | 功能描述:IC CDC 12BIT 1/2CH 10MSOP 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:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:数据采集系统（DAS） 分辨率（位）:16 b 采样率（每秒）:21.94k 数据接口:MICROWIRE?，QSPI?，串行，SPI? 电压电源:模拟和数字 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:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（6x6） 包装:托盘 |
| AD7153BRMZ-REEL | 功能描述:IC CDC 12BIT 1/2CH 10MSOP 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:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:数据采集系统（DAS） 分辨率（位）:16 b 采样率（每秒）:21.94k 数据接口:MICROWIRE?，QSPI?，串行，SPI? 电压电源:模拟和数字 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:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（6x6） 包装:托盘 |
| AD7156 | 制造商:AD 制造商全称:Analog Devices 功能描述:Ultralow Power, 1.8 V, 3 mm × 3 mm, 2-Channel Capacitance Converter |
| AD7156BCPZ-REEL | 功能描述:IC CDC 2CH 12BIT 1.8V 10-LFCSP 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:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:数据采集系统（DAS） 分辨率（位）:16 b 采样率（每秒）:21.94k 数据接口:MICROWIRE?，QSPI?，串行，SPI? 电压电源:模拟和数字 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:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（6x6） 包装:托盘 |
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