- 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： | 19/29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页当前第19页第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
Data Sheet
AD7291
Rev. B | Page 25 of 28
The example in Figure 28 shows the command mode convert-
ing on a sequence of channels including VIN0, VIN1, and VIN2.
1.
The master device asserts a start condition on SDA.
2.
The master sends the 7-bit slave address followed by the
write bit (low).
3.
The addressed slave device (AD7291) asserts an
acknowledge on SDA.
4.
The master sends the command register address (0x00).
5.
The slave asserts an acknowledge on SDA.
6.
The master sends the first data byte (0xE0) to the command
register, which selects the VIN0, VIN1, and VIN2 channels.
7.
The slave asserts an acknowledge on SDA.
8.
The master sends the second data byte (0x20) to the com-
mand register.
9.
The slave asserts an acknowledge on SDA.
10. The master sends the result register address (0x01).
11. The slave asserts an acknowledge on SDA.
12. The master sends the 7-bit slave address followed by the
write bit (high).
13. The slave (AD7291) asserts an acknowledge on SDA.
14. The master receives a data byte, which contains the
channel address bits and the four MSBs of the converted
result for Channel VIN0.
15. The master then asserts an acknowledge on SDA.
16. The master receives the second data byte, which contains
the eight LSBs of the converted result for Channel VIN0. The
master then asserts on acknowledge on SDA.
17. Step 11 and Step 12 repeat for Channel VIN1 and
Channel VIN2.
18. Once the master has received the results from all the
selected channels, the slave again converts and outputs
the result for the first channel in the selected sequence.
Step 12 to Step 14 are repeated.
19. The master asserts a not acknowledge on SDA and a stop
condition on SDA to end the conversion and exit
command mode.
To change the conversion sequence, rewrite a new sequence to
the command mode. If a new write to the command register is
performed while an existing conversion sequence is underway,
the existing conversion sequence is terminated and the next
conversion performed is the first selected channel from the new
sequence. The maximum throughput that can be achieved using
this mode with a 400 kHz I2C clock is (400 kHz/18) = 22.2 kSPS.
08
711-016
S
SA
P
...
0
SA
COMMAND = 0xE0
COMMAND = 0x20
A
VIN0[11:8]
A
POINT TO RESULT REG (0x01)
SR
1
SA
CH AD (0000)
...
A
VIN2[11:8]
*
A
...
A
VIN0[7:0]
...
........
A
* = POSITION OF SAMPLING START
SLAVE ADDRESS
POINT TO COMMAND REG (0x00)
VIN0[7:0]
A
CH AD (0001)
A
...
VIN1[7:0]
VIN1[11:8]
VIN0[11:8]
SLAVE ADDRESS
VIN2[7:0]
CH AD (0010)
CH ID (0000)
FROM MASTER TO SLAVE
FROM SLAVE TO MASTER
S = START CONDITION
SR = REPEATED START
P = STOP CONDITION
SA = SLAVE ACKNOWLEDGE
A = NOT ACKNOWLEDGE
Figure 28. Command Mode Operation
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。