參數(shù)資料
型號(hào)： ADS1222IPWR
廠商： Texas Instruments
文件頁(yè)數(shù)： 8/26頁(yè)
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(lèi)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(lèi)型： 4 個(gè)單端，單極；2 個(gè)差分，雙極
ADS1222
SBAS314B APRIL 2004 REVISED JANUARY 2009
www.ti.com
16
SYMBOL
DESCRIPTION
MIN
MAX
UNITS
t9(1)
SCLK high after DRDY/DOUT goes low to activate Standby mode
0
8.272
ms
t10(1)
Standby mode activation time
8.272
8.304
ms
t11(1)
Data ready after exiting Standby mode
27.7
28.1
ms
(2) Values given for fCLK = 2MHz. For different fCLK frequencies, scale proportional to CLK period.
DRDY/DOUT
23
22
21
124
023
SCLK
Standby Mode
Start Conversion
Data Ready
t
9
t
10
t
11
Figure 28. Standby Mode Timing (can be used for single conversions)
SYMBOL
DESCRIPTION
MIN
MAX
UNITS
t12(1)
Data ready after exiting Standby mode and calibration
78.8
79.7
ms
(1) Values given for fCLK = 2MHz. For different fCLK frequencies, scale proportional to CLK period.
Standby Mode
Begin Calibration
Data Ready After Calibration
t
10
t
12
DRDY/DOUT
23
124
25
22
21
0
23
SCLK
Figure 29. Standby Mode with Self-Calibration Timing (can be used for single conversions)
SINGLE CONVERSIONS
When only single conversions are needed, Standby
mode can be used to start and stop the ADS1222. To
make a single conversion, first enter the Standby mode
holding SCLK high. Now, when ready to start the
conversion, take SCLK low. The ADS1222 wakes up
and begins the conversion. Wait for DRDY/DOUT to go
low, and then retrieve the data. Afterwards, take SCLK
high to stop the ADS1222 from converting and re-enter
Standby mode. Continue to hold SCLK high until ready
to start the next conversion. Operating in this fashion
greatly
reduces
power
consumption
since
the
ADS1222 is shut down while idle between conversions.
Self-calibrations can be performed prior to the start of
the single conversions by using the waveform shown in
Figure 29.
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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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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(chēng):BB 功能描述:24-Bit Analog-to-Digital Converter with 4-Channel Differential Input Multiplexer
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