- 您现在的位置：买卖IC网 > PDF目录10681 > AD7291BCPZ (Analog Devices Inc)IC ADC 12BIT SAR 8CH 20-LFCSP PDF资料下载
参数资料
| 型号： | AD7291BCPZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 20/29页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT SAR 8CH 20-LFCSP |
| 标准包装： | 1 |
| 位数： | 12 |
| 采样率（每秒）： | 22.22k |
| 数据接口： | I²C，串行 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 12.6mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-WFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 20-LFCSP-WQ（4x4） |
| 包装： | 托盘 |
| 输入数目和类型： | 8 个单端，单极 |
| 配用： | EVAL-AD7291SDZ-ND - BOARD EVAL FOR AD7291 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页当前第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页
AD7291
Data Sheet
Rev. B | Page 26 of 28
AUTOCYCLE MODE
The AD7291 can be configured to convert continuously on a
programmable sequence of channels, making it the ideal mode
of operation for system monitoring. This mode is useful for
monitoring signals, such as battery voltage and temperature,
alerting only when the limits are violated.
Conversions take place in the background approximately every
50 μs, and are transparent to the master. The acquisition and
conversion times combined for any channel take approximately
3.6 μs. Typically, this mode is used to automatically monitor a
selection of channels with either the limit registers programmed
to signal an out-of-range condition via the alert function or the
minimum/maximum recorders tracking the variation over time
of a particular channel. Reads and writes can be performed at
any time (the ADC voltage conversion result register, Register
0x01, contains the most recent conversion result).
During power-up, this mode is disabled. To enable this mode,
write to Bit D0 in the command register (Register 0x00) and
select the desired channels for conversion by writing to the
corresponding channel bits (Bit D15 to Bit D8). If more than
one channel bit is set in the configuration register, the ADC
automatically cycles through the channel sequence starting with
the lowest channel and working its way up through the sequence.
Once the sequence is complete, the ADC starts converting on
the lowest channel again, continuing to loop through the
sequence until this mode is exited. Once a conversion is
completed, the conversion result is compared with the content
of the limit registers, and alert status registers are automatically
updated. If a violation of the limit registers is found, the ALERT
pin is asserted with the polarity determined by Bit D3 in the
command register.
If a command mode conversion is required while the autocycle
mode is active, it is necessary to disable the autocycle mode
before proceeding to the command mode. This is achieved
by setting Bit D0 of the command register to 1. When the
command mode conversion is complete, the user can reenable
autocycle mode by setting Bit D0 to 1 in the command register.
In autocycle mode, the AD7291 does not enter partial power-
down on receipt of a stop condition; therefore, conversions and
alert monitoring continue to function.
相关PDF资料 |
PDF描述 |
|---|---|
| VI-26R-MY-B1 | CONVERTER MOD DC/DC 7.5V 50W |
| 1676850-1 | CAP CER 0.47PF 25V 5% NP0 0402 |
| VI-26L-MY-B1 | CONVERTER MOD DC/DC 28V 50W |
| VE-JWD-MY-F4 | CONVERTER MOD DC/DC 85V 50W |
| VI-24Y-MX-B1 | CONVERTER MOD DC/DC 3.3V 49.5W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7291BCPZ-RL7 | 功能描述:IC ADC I2C/SRL 22.22K 20LFCSP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率（每秒）:45k 数据接口:串行 转换器数目:2 功率耗散（最大）:315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端，单极 |
| AD7291TCPZ-EP | 功能描述:CH 12 BIT SAR WT INTERNAL TEMP S 制造商:analog devices inc. 系列:- 包装:托盘 零件状态:在售 位数:12 采样率（每秒）:22.22k 输入数:8 输入类型:单端 数据接口:I2C 配置:MUX-S/H-ADC 无线电 - S/H:ADC:1:1 A/D 转换器数:1 架构:SAR 参考类型:外部， 内部 电压 - 电源，模拟:2.8 V ~ 3.6 V 电压 - 电源，数字:2.8 V ~ 3.6 V 特性:温度传感器 工作温度:-55°C ~ 125°C（TA） 封装/外壳:20-WFQFN 裸露焊盘，CSP 供应商器件封装:20-LFCSP（4x4） 标准包装:1 |
| AD7291TCPZ-EP-RL7 | 功能描述:8 CH 12 BIT SAR WT INTERNAL TEMP 制造商:analog devices inc. 系列:- 包装:带卷（TR） 零件状态:在售 位数:12 采样率（每秒）:22.22k 输入数:8 输入类型:单端 数据接口:I2C 配置:MUX-S/H-ADC 无线电 - S/H:ADC:1:1 A/D 转换器数:1 架构:SAR 参考类型:外部， 内部 电压 - 电源，模拟:2.8 V ~ 3.6 V 电压 - 电源，数字:2.8 V ~ 3.6 V 特性:温度传感器 工作温度:-55°C ~ 125°C（TA） 封装/外壳:20-WFQFN 裸露焊盘，CSP 供应商器件封装:20-LFCSP（4x4） 标准包装:1,500 |
| AD7292BCPZ | 制造商:Analog Devices 功能描述:Monitor and Control System 36-Pin LFCSP EP Tray 制造商:Analog Devices 功能描述:12-BIT,MULTI-CHANNEL, ADC,DAC WT TEMP IC - Trays 制造商:Analog Devices 功能描述:IC ADC 10BIT SPI/SRL 36-LFCSP 制造商:Analog Devices 功能描述:ADC DAC TEMP SENSOR GPIO 3 制造商:Analog Devices 功能描述:ADC, DAC, TEMP SENSOR, GPIO, 36LFCSP 制造商:Analog Devices Inc. 功能描述:Analog to Digital Converters - ADC 12-Bit Multi-Channel ADC DAC wt Temp IC 制造商:Analog Devices 功能描述:ANALOGUE MONITORING & CONTROL CIRCUIT, LFCSP-36; IC Function:Analogue Monitoring and Control Circuit; Supply Voltage Min:1.8V; Supply Voltage Max:5.25V; Operating Temperature Min:-40C; Operating Temperature Max:125C; No. of Pins:36;RoHS Compliant: Yes |
| AD7292BCPZ-RL | 制造商:Analog Devices 功能描述:Monitor and Control System 36-Pin LFCSP EP T/R 制造商:Analog Devices 功能描述:12-BIT,MULTI-CHANNEL, ADC,DAC WT TEMP IC - Tape and Reel 制造商:Analog Devices 功能描述:IC ADC 10BIT SPI/SRL 36LFCSP 制造商:Analog Devices Inc. 功能描述:Analog to Digital Converters - ADC 12-Bit Multi-Channel ADC DAC wt Temp IC 制造商:Analog Devices Inc. 功能描述:Analog to Digital Converters - ADC 10B Monitor & Cntrl System w/ Temp Sensr |
发布紧急采购，3分钟左右您将得到回复。