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參數(shù)資料
| 型號： | SX8724E082TRT |
| 廠商： | Semtech |
| 文件頁數(shù)： | 8/53頁 |
| 文件大小： | 0K |
| 描述： | IC DAS PRESSURE/TEMP SENS 16MLPQ |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | ZoomingADC™ |
| 類型： | 數(shù)據(jù)采集系統(tǒng)（DAS） |
| 輸入類型： | 差分 |
| 輸出類型： | 數(shù)字 |
| 接口： | I²C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-VQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 16-MLPQ（4x4） |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 配用： | XE8000EV121-ND - BOARD EVAL FOR SX8723/24 |
| 其它名稱： | SX8724E082DKR |
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ADVANCED COMMUNICATIONS & SENSING
V1.23 2009 Semtech Corp.
www.semtech.com
16
SX8724
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) |
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| SX8724EVK | 制造商:Semtech Corporation 功能描述:Evaluation Board for SX8724E082TRT Data Acquisition System |
| SX8724S | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:ZoomingADC for sensing data acquisition |
| SX8724SEVK | 制造商:Semtech Corporation 功能描述: 制造商:Semtech Corporation 功能描述:Evaluation Kit for SX8724S |
| SX8724SWLTDT | 制造商:Semtech Corporation 功能描述:3 INPUTS ZOOMING ADC WITH SPI |
| SX8725 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:ZoomingADC? for Pressure and Temperature Sensing |
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