-VREF (2 1) - 23 MSB MID LSB CHECKSUM Bit7ofChecksum or Flag=1;Bit0ofLSBConversionDat" />
參數(shù)資料
型號(hào)： ADS1259BIPW
廠(chǎng)商： Texas Instruments
文件頁(yè)數(shù)： 22/48頁(yè)
文件大小： 0K
描述： IC ADC 24BIT 14KSPS LN 20TSSOP
產(chǎn)品培訓(xùn)模塊： Industrial Automation Overview
標(biāo)準(zhǔn)包裝： 70
位數(shù)： 24
采樣率（每秒）： 14k
數(shù)據(jù)接口： 串行，SPI?
轉(zhuǎn)換器數(shù)目： 1
電壓電源： 模擬和數(shù)字，雙 ±
工作溫度： -40°C ~ 125°C
安裝類(lèi)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
輸入數(shù)目和類(lèi)型： 2 個(gè)單端，單極；2 個(gè)單端，雙極；1 個(gè)差分，單極；1 個(gè)差分，雙極
其它名稱(chēng)： 296-27183-5
+V
REF
(2
1)
-
23
-VREF
(2
1)
-
23
MSB
MID
LSB
CHECKSUM
Bit7ofChecksum
or
Flag=1;Bit0ofLSBConversionData
24-BitConversionData(CHKSUM=0)
32-BitConversionData (CHKSUM=1)
-VREF
2
23
2
1
-
23
SBAS424D
– JUNE 2009 – REVISED AUGUST 2011
DATA FORMAT
DATA CHECKSUM BYTE AND FLAG BIT
The ADS1259 outputs 24 bits of conversion data in
An optional checksum byte can be appended to the
binary twos complement format, MSB first. The data
conversion data bytes. The checksum makes the
LSB has a weight of VREF/(2
23
– 1). A positive
data word length four bytes in length instead of three.
full-scale input produces an output code of 7FFFFFh
The checksum byte is enabled by the register bit
and the negative full-scale input produces an output
CHKSUM. The checksum itself is the least significant
code of 800000h. The output clips at these codes for
byte sum of the three conversion data bytes, offset by
signals that exceed full-scale. Table 16 summarizes the
9Bh. Note that the checksum byte option only applies
ideal output codes for different input signals.
to the readback conversion data, not to register data.
The checksum is either seven bits or eight bits,
Table 16. Ideal Output Code versus Input Signal
depending if the FLAG register bit is enabled. If the
FLAG bit is enabled the checksum is seven bits, with
DIFFERENTIAL INPUT SIGNAL VIN
IDEAL OUTPUT
bit 7 replaced by the out-of-range flag. Figure 58 and
(AINP
– AINN)
Table 17 describe the combinations of the FLAG and
≥ VREF
7FFFFFh
CHKSUM register bits.
Checksum = MSB data byte + Mid data byte + LSB
000001h
data byte + 9Bh.
0
000000h
FFFFFFh
800000h
Figure 58. Checksum Byte and Out-of-Range Flag
(1) Excludes effects of noise, linearity, offset, and gain errors.
DATA INTEGRITY
Table 17. Checksum Byte and Over-Range Flag
Data readback integrity is augmented by a checksum
FLAG
CHKSUM
byte
and
redundant
data
read
capability.
The
REGISTER
checksum byte is the sum of three data conversion
BIT
DESCRIPTION
bytes, offset by 9Bh. Additionally, the data conversion
No checksum byte, no out-of-range
0
bytes may be read multiple times by continuing to
flag
shift data past the initial read of 24 bits (32 bits if
8-bit checksum byte, no
0
1
checksum is enabled).
out-of-range flag
No checksum byte, out-of-range
1
0
flag replaces LSB (bit 0) of
conversion data
7-bit checksum byte, out-of-range
1
replaces MSB (bit 7) of checksum
byte.
Copyright
2009–2011, Texas Instruments Incorporated
29
相關(guān)PDF資料
PDF描述
TLC2551ID IC 12BIT 400 KSPS ADC S/O 8-SOIC
MCP6544T-I/SL IC COMP PUSHPULL 1.6V QUAD14SOIC
MCP6549T-I/SL IC COMP OPENDRN 1.6V QUAD 14SOIC
MCP6549T-I/ST IC COMP OPENDRN 1.6V QUAD14TSSOP
VI-2WX-IX-B1 CONVERTER MOD DC/DC 5.2V 75W
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADS1259BIPW 制造商:Texas Instruments 功能描述:A/D CONVERTER (A-D) IC
ADS1259BIPWR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Low-Noise 14kSPS 24B ADC 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
ADS1259EVM 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開(kāi)發(fā)工具 ADS1259 Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類(lèi)型:ADC 工具用于評(píng)估:ADS130E08 接口類(lèi)型:SPI 工作電源電壓:- 6 V to + 6 V
ADS1259EVM 制造商:Texas Instruments 功能描述:DEVELOPMENT TOOL
ADS1259EVM-PDK 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開(kāi)發(fā)工具 ADS1259 Perf Demo Kit RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類(lèi)型:ADC 工具用于評(píng)估:ADS130E08 接口類(lèi)型:SPI 工作電源電壓:- 6 V to + 6 V
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

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

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

*型號(hào) *數(shù)量 廠(chǎng)商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*