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參數(shù)資料
| 型號： | SX8725E083TDT |
| 元件分類： | ADC |
| 英文描述： | 3-CH 16-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, PDSO12 |
| 封裝： | 4 X 4 MM, ROHS COMPLIANT, MLPD-12 |
| 文件頁數(shù)： | 8/53頁 |
| 文件大?。?/td> | 3966K |
| 代理商： | SX8725E083TDT |
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ADVANCED COMMUNICATIONS & SENSING
V1.8 2009 Semtech Corp.
www.semtech.com
16
SX8725
ZoomingADC for Pressure and Temperature Sensing
stages 1 to 3. Fine gain programming up to 1'000 V/V is possible. In addition, the last two stages provide
programmable offset. Each amplifier can be bypassed if needed.
The output of the PGA stages is directly fed to the analog-to-digital converter (ADC), which converts the signal
VIN,ADC into digital.
Like most ADCs intended for instrumentation or sensing applications, the ZoomingADC is an over-sampled
converter (See Note
1). The ADC is a so-called incremental converter; with bipolar operation (the ADC accepts
both positive and negative differential input voltages). In first approximation, the ADC output result relative to
full-scale (FS) delivers the quantity:
2
/
2
/
,
ADC
REF
ADC
IN
S
ADC
V
F
OUT
Equation 1
in two's complement (see Equation 4 and Equation 5 for details). The output code OUTADC is -FS/2 to +FS/2 for
VIN,ADC
-V
REF,ADC/2 to +VREF,ADC/2 respectively. As will be shown, VIN,ADC is related to input voltage VIN by the
relationship:
ADC
REF
TOT
IN
TOT
ADC
IN
V
GDoff
V
GD
V
,
=
(V)
Equation 2
where GDTOT is the total PGA gain, and GDoffTOT is the total PGA offset.
1 Note: Over-sampled converters are operated with a sampling frequency f
S much higher than the input signal's Nyquist rate (typically fS is
20-1'000 times the input signal bandwidth). The sampling frequency to throughput ratio is large (typically 10-500). These converters include
digital decimation filtering. They are mainly used for high resolution, and/or low-to-medium speed applications.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SX8725E083TRT | 功能描述:IC DAS PRESSURE/TEMP SENS 12MLPD RoHS:是 類別:集成電路 (IC) >> 接口 - 傳感器和探測器接口 系列:ZoomingADC™ 其它有關(guān)文件:Automotive Product Guide 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:74 系列:- 類型:觸控式傳感器 輸入類型:數(shù)字 輸出類型:數(shù)字 接口:JTAG，串行 電流 - 電源:100µA 安裝類型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:20-TSSOP 包裝:管件 |
| SX8725S | 制造商:SEMTECH 制造商全稱: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 制造商全稱:Semtech Corporation 功能描述:Precision Diode Digital Temperature For Up To 3 External Sensors |
| SX8733_11 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Precision Diode Digital Temperature For Up To 3 External Sensors |
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