- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄10680 > AD7949BCPZ (Analog Devices Inc)IC ADC 14BIT 250KSPS 8CH 20LFCSP PDF資料下載
參數(shù)資料
| 型號： | AD7949BCPZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 17/32頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 14BIT 250KSPS 8CH 20LFCSP |
| 產(chǎn)品培訓(xùn)模塊： | Power Line Monitoring |
| 產(chǎn)品變化通告： | Startup Circuitry Design Improvement Change 15/April/2009 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | PulSAR® |
| 位數(shù)： | 14 |
| 采樣率（每秒）： | 250k |
| 數(shù)據(jù)接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 15.5mW |
| 電壓電源： | 單電源 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-VFQFN 裸露焊盤，CSP |
| 供應(yīng)商設(shè)備封裝： | 20-LFCSP-VQ |
| 包裝： | 托盤 |
| 輸入數(shù)目和類型： | * |
| 產(chǎn)品目錄頁面： | 780 (CN2011-ZH PDF) |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁當(dāng)前第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁
AD7949
Data Sheet
Rev. D | Page 24 of 32
The register can be written to during conversion, during acquisi-
tion, or spanning acquisition/conversion, and is updated at the end
of conversion, tCONV (maximum). There is always a one deep
delay when writing the CFG register. Note that, at power-up, the
CFG register is undefined and two dummy conversions are
required to update the register. To preload the CFG register with a
factory setting, hold DIN high for two conversions. Thus
CFG[13:0] = 0x3FFF. This sets the AD7949 for the following:
IN[7:0] unipolar referenced to GND, sequenced in order
Full bandwidth for a one-pole filter
Internal reference/temperature sensor disabled, buffer
enabled
Enables the internal sequencer
No readback of the CFG register
Table 9 summarizes the configuration register bit details. See
the Theory of Operation section for more details.
13
12
11
10
9
8
7
6
5
4
3
2
1
0
CFG
INCC
INx
BW
REF
SEQ
RB
Table 9. Configuration Register Description
Bit(s)
Name
Description
[13]
CFG
Configuration update.
0 = keep current configuration settings.
1 = overwrite contents of register.
[12:10]
INCC
Input channel configuration. Selection of pseudo bipolar, pseudo differential, pairs, single-ended, or temperature sensor. Refer
to the
Input Configurations section.
Bit 12
Bit 11
Bit 10
Function
0
X1
Bipolar differential pairs; INx referenced to VREF/2 ± 0.1 V.
0
1
0
Bipolar; INx referenced to COM = VREF/2 ± 0.1 V.
0
1
Temperature sensor.
1
0
X1
Unipolar differential pairs; INx referenced to GND ± 0.1 V.
1
0
Unipolar, INx referenced to COM = GND ± 0.1 V.
1
Unipolar, INx referenced to GND.
[9:7]
INx
Input channel selection in binary fashion.
Bit 9
Bit 8
Bit 7
Channel
0
IN0
0
1
IN1
…
1
IN7
[6]
BW
Select bandwidth for low-pass filter. Refer to the
0 = of BW, uses an additional series resistor to further bandwidth limit the noise. Maximum throughput must also be reduced to .
1 = full BW.
[5:3]
REF
Reference/buffer selection. Selection of internal, external, external buffered, and enabling of the on-chip temperature sensor.
Refer to the
Voltage Reference Output/Input section.
Bit 5
Bit 4
Bit 3
Function
0
Internal reference, REF = 2.5 V output, temperature enabled.
0
1
Internal reference, REF = 4.096 V output, temperature enabled.
0
1
0
External reference, temperature enabled.
0
1
External reference, internal buffer, temperature enabled.
1
0
External reference, temperature disabled.
1
External reference, internal buffer, temperature disabled.
[2:1]
SEQ
Channel sequencer. Allows for scanning channels in an IN0 to IN[7:0] fashion. Refer to the
Channel Sequencer section.
Bit 2
Bit 1
Function
0
Disable sequencer.
0
1
Update configuration during sequence.
1
0
Scan IN0 to IN[7:0] (set in CFG[9:7]), then temperature.
1
Scan IN0 to IN[7:0] (set in CFG[9:7]).
[0]
RB
Read back the CFG register.
0 = read back current configuration at end of data.
1 = do not read back contents of configuration.
1
X = don’t care.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 1676855-2 | CAP CER 0.56PF 100V 5% NP0 0603 |
| 1676855-1 | CAP CER 0.47PF 100V 5% NP0 0603 |
| 1676853-4 | CAP CER 0.82PF 25V 5% NP0 0603 |
| 1676853-3 | CAP CER 0.68PF 25V 5% NP0 0603 |
| VI-2NZ-MX-B1 | CONVERTER MOD DC/DC 2V 30W |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7949BCPZ | 制造商:Analog Devices 功能描述:IC ADC 14BIT 250KSPS LFCSP-20 |
| AD7949BCPZRL7 | 功能描述:IC ADC 14BIT 250KSPS 8CH 20LFCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:PulSAR® 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極 |
| AD7949SCPZ-EP-R2 | 功能描述:14 Bit Analog to Digital Converter 8 Input 1 SAR 20-LFCSP-WQ (4x4) 制造商:analog devices inc. 系列:PulSAR? 包裝:剪切帶（CT） 零件狀態(tài):有效 位數(shù):14 采樣率（每秒）:256k 輸入數(shù):8 輸入類型:差分，單端 數(shù)據(jù)接口:SPI，DSP 配置:MUX-ADC 無線電 - S/H:ADC:- A/D 轉(zhuǎn)換器數(shù):1 架構(gòu):SAR 參考類型:外部， 內(nèi)部 電壓 - 電源，模擬:2.3 V ~ 5.5 V 電壓 - 電源，數(shù)字:2.3 V ~ 5.5 V 特性:溫度傳感器 工作溫度:-55°C ~ 125°C 封裝/外殼:20-WFQFN 裸露焊盤，CSP 供應(yīng)商器件封裝:20-LFCSP-WQ（4x4） 標(biāo)準(zhǔn)包裝:1 |
| AD7949SCPZ-EP-RL7 | 制造商:Analog Devices 功能描述:ADC Single SAR 250ksps 14-bit Serial 20-Pin LFCSP EP T/R 制造商:Analog Devices 功能描述:8 CH 250KSPS 14BIT ADC IC - Tape and Reel 制造商:Analog Devices 功能描述:IC ADC 14BIT 8CH 250KSPS 20LFCSP 制造商:Analog Devices 功能描述:Analog to Digital Converters - ADC 14-Bit 8CH 250 kSPS 制造商:Analog Devices 功能描述:CONVERTER - ADC |
| AD795 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Power, Low Noise Precision FET Op Amp |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。