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| 型号： | SX8725CWLTDT |
| 元件分类： | ADC |
| 英文描述： | 2-CH 16-BIT PROPRIETARY METHOD ADC, SERIAL/PARALLEL ACCESS, PDSO12 |
| 封装： | 4 X 4 MM, HALOGEN FREE AND ROHS COMPLIANT, MLPD-12 |
| 文件页数： | 10/68页 |
| 文件大小： | 1718K |
| 代理商： | SX8725CWLTDT |
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Page 18
ADVANCED COMMUNICATIONS & SENSING
DATASHEET
SX8725C
ZoomingADC for sensing data acquisition
Revision 1.01
January 2011
Semtech
7 ZoomingADC
7.1 Overview
The ZoomingADC is a complete and versatile low-power analog front-end interface typically intended for sensing
applications. In the following text the ZoomingADC will be referred as ZADC.
The key features of the ZADC are:
Programmable 6 to 16-bit dynamic range over-sampled ADC
Flexible gain programming between 1/12 and 1000
Flexible and large range offset compensation
Differential or single-ended input
2-channel differential reference inputs
Power saving modes
The total acquisition chain consists of an input multiplexer, 3 programmable gain amplifier stages and an over sampled
A/D converter. The reference voltage can be selected on two different channels. Two offset compensation amplifiers
allow for a wide offset compensation range. The programmable gain and offset allow the application to zoom in on a
small portion of the reference voltage defined input range.
7.1.1 Acquisition Chain
Figure 10, page 18 shows the general block diagram of the acquisition chain (AC). A control block (not shown in
Figure 10) manages all communications with the I2C peripheral. The clocking is derived from the internal 4 MHz
Oscillator.
Analog inputs can be selected through an 8 input multiplexer, while reference input is selected between two
differential channels. It should however be noted that only 7 acquisition channels (including the VREF) are available
when configured as single ended since the input amplifier is always operating in differential mode with both positive
and negative input selected through the multiplexer.
Figure 10. ZADC General Functional Block Diagram
PGA1
PGA2
PGA3
ADC
±Vin
±Voff
±Vref
AMUX
Analog
Inputs
VMUX
Reference
Inputs
VIN
VD1
VD2
VIN,ADC
VREF,ADC
VSS
VREF
AC2
AC3
N.C.
VSS
VBATT
VSS
VREF
ANALOG ZOOM
S
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SX8725E083TDT | 功能描述:IC DAS PRESS/TEMP SENS 12MLPD RoHS:是 类别:集成电路 (IC) >> 接口 - 传感器和探测器接口 系列:ZoomingADC™ 其它有关文件:Automotive Product Guide 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:74 系列:- 类型:触控式传感器 输入类型:数字 输出类型:数字 接口:JTAG，串行 电流 - 电源:100µA 安装类型:表面贴装 封装/外壳:20-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:20-TSSOP 包装:管件 |
| SX8725E083TRT | 功能描述:IC DAS PRESSURE/TEMP SENS 12MLPD RoHS:是 类别:集成电路 (IC) >> 接口 - 传感器和探测器接口 系列:ZoomingADC™ 其它有关文件:Automotive Product Guide 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:74 系列:- 类型:触控式传感器 输入类型:数字 输出类型:数字 接口:JTAG，串行 电流 - 电源:100µA 安装类型:表面贴装 封装/外壳:20-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:20-TSSOP 包装:管件 |
| SX8725S | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:ZoomingADC for sensing data acquisition ADVANCED COMMUNICATIONS & SENSING |
| SX8725SWLTDT | 制造商:Semtech Corporation 功能描述: 制造商:Semtech Corporation 功能描述:1 INPUTS ZOOMING ADC WITH SPI |
| SX8733 | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Precision Diode Digital Temperature For Up To 3 External Sensors |
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