參數(shù)資料
型號： ADS1222IPWR
廠商： Texas Instruments
文件頁數(shù)： 25/26頁
文件大?。?/td> 0K
描述： IC 24BIT ADC W/2CH MUX 14-TSSOP
產(chǎn)品培訓(xùn)模塊： Data Converter Basics
視頻文件： Nuts and Bolts of the Delta-Sigma Converter
標(biāo)準(zhǔn)包裝： 2,000
位數(shù)： 24
采樣率（每秒）： 240
數(shù)據(jù)接口： 串行
轉(zhuǎn)換器數(shù)目： 1
功率耗散（最大）： 2.25mW
電壓電源： 模擬和數(shù)字
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 14-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 14-TSSOP
包裝： 帶卷 (TR)
輸入數(shù)目和類型： 4 個單端，單極；2 個差分，雙極
ADS1222
SBAS314B APRIL 2004 REVISED JANUARY 2009
www.ti.com
8
OVERVIEW
The ADS1222 is an A/D converter comprised of a
delta-sigma modulator followed by a digital filter. A mux
allows for one of two input channels to be selected. A
buffer can also be selected to increase the input
impedance. The modulator measures the differential
input signal VIN = (AINP – AINN) against the differential
reference VREF = (VREFP – VREFN). Figure 13 shows
a conceptual diagram of the device. The differential
reference is scaled internally so that the full-scale input
range is
±2VREF. The digital filter receives the modulator
signal and provides a low-noise digital output. A 2-wire
serial interface indicates conversion completion and
provides the user with the output data.
ANALOG INPUTS (AINPx, AINNx)
The input signal to be measured is applied to the input
pins AINPx and AINNx. The positive internal input is
generalized as AINP, and the negative internal input is
generalized as AINN. The signal is selected though the
input mux, which is controlled by MUX, as shown in
Table 1. The ADS1222 accepts differential input
signals, but can also measure unipolar signals. When
measuring unipolar (or single-ended signals) with
respect to ground, connect the negative input (AINNx)
to ground and connect the input signal to the positive
input (AINPx). Note that when the ADS1222 is
configured this way, only half of the converter full-scale
range is used since only positive digital output codes
are produced. An input buffer can be selected to
increase the input impedance of the A/D converter with
the BUFEN pin.
Table 1. Input Channel Selection with MUX
DIGITAL PIN
SELECTED ANALOG INPUTS
MUX
POSITIVE INPUT
NEGATIVE INPUT
0
AINP1
AINN1
1
AINP2
AINN2
Mux
AINP
V
IN
AINN
Temp
Sensor
Digital
Filter
and
Serial
Interface
Σ
Modulator
VREFP
Σ
VREFN
Buffer
AINP1
AINN1
AINP2
AINN2
+
CLK
DRDY/DOUT
SCLK
TEMPEN
MUX
BUFEN
2
V
REF
2V
REF
Σ
Figure 13. Conceptual Diagram of the ADS1222
相關(guān)PDF資料
PDF描述
VE-21W-IW-F2 CONVERTER MOD DC/DC 5.5V 100W
VE-B5V-IV-F4 CONVERTER MOD DC/DC 5.8V 150W
MAX9744ETH+T IC AMP AUDIO PWR 22.5W D 44TQFN
VE-21V-IW-F4 CONVERTER MOD DC/DC 5.8V 100W
VE-21V-IW-F3 CONVERTER MOD DC/DC 5.8V 100W
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADS1222IPWRG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 24-Bit Conv w/2-Ch Diff Input Mltplxer RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS1222IPWT 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 24-Bit Conv w/2-Ch Diff Input Mltplxer RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS1222IPWT 制造商:Texas Instruments 功能描述:IC 24-BIT ADC 2 CH DIFF I/P MULTI
ADS1222IPWTG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 24-Bit Conv w/2-Ch Diff Input Mltplxer RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS1224 制造商:BB 制造商全稱:BB 功能描述:24-Bit Analog-to-Digital Converter with 4-Channel Differential Input Multiplexer
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*