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参数资料
| 型号： | AD7923BRUZ-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 11/24页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT 4CH W/SEQ 16TSSOP |
| 标准包装： | 1 |
| 位数： | 12 |
| 采样率（每秒）： | 200k |
| 数据接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 7.5mW |
| 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： | 16-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 16-TSSOP |
| 包装： | 标准包装 |
| 输入数目和类型： | 4 个单端，单极 |
| 其它名称： | AD7923BRUZ-REEL7DKR |
Data Sheet
AD7923
Rev. D | Page 19 of 24
INVALID DATA
CHANNEL IDENTIFIER BITS + CONVERSION RESULT
DIN LINE HIGH FOR FIRST DUMMY CONVERSION
DATA INTO CONTROL REGISTER
TO KEEP THE PART IN NORMAL MODE, LOAD
PM1 = PM0 = 1 IN CONTROL REGISTER
1
14
16
1
14
16
ALLOW
tPOWER TO ELAPSE
IF IN SHUTDOWN AT POWER-ON
PART BEGINS TO POWER UP ON
CS RISING EDGE AS PM1 = PM0 = 1
PART IS IN
UNKNOWN MODE
AFTER POWER-ON
CS
SCLK
DOUT
DIN
03086-023
t12
Figure 23. Placing the AD7923 into Normal Mode after Supplies are First Applied
INVALID DATA
1
14
16
PART ENTERS SHUTDOWN ON
CS RISING EDGE AS PM1 = PM0 = 0
PART IS IN
UNKNOWN MODE
AFTER POWER-ON
CS
SCLK
DOUT
DIN
DATA INTO CONTROL REGISTER
CONTROL REGISTER IS LOADED ON
THE FIRST 12 CLOCKS. PM1 = 1, PM0 = 0
03086-024
Figure 24. Placing the AD7923 into Full Shutdown Mode after Supplies are First Applied
INVALID DATA
DIN LINE HIGH FOR FIRST DUMMY CONVERSION
DATA INTO CONTROL REGISTER
CONTROL REGISTER IS LOADED ON THE
FIRST 12 CLOCKS. PM1 = 0, PM0 = 1
1
14
16
1
14
16
PART IS IN
UNKNOWN MODE
AFTER POWER-ON
CS
SCLK
DOUT
DIN
03086-025
PART ENTERS AUTO SHUTDOWN ON
CS RISING EDGE AS PM1 = 0, PM0 = 1
Figure 25. Placing the AD7923 into Auto Shutdown Mode after Supplies are First Applied
POWER vs. THROUGHPUT RATE
In auto shutdown mode, the average power consumption of the
ADC can be reduced at any given throughput rate. The power
saving depends on the SCLK frequency used, that is, conversion
time. In some cases where the conversion time is a large propor-
tion of the cycle time, the throughput rate needs to be reduced
to take advantage of the power-down modes. Assuming a
20 MHz SCLK is used, the conversion time is 800 ns, but the
cycle time is 5 μs when the sampling rate is at a maximum of
200 kSPS. If the AD7923 is placed into shutdown for the
remainder of the cycle time, then on average far less power is
consumed in every cycle compared to leaving the device in
normal mode. Furthermore, Figure 26 shows how, as the
throughput rate is reduced, the part remains in its shutdown
longer and the average power consumption drops accordingly
over time.
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相关代理商/技术参数 |
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| AD7923SRU-EP | 功能描述:模数转换器 - ADC 4CH 200 kSPS 12-Bit W/ Sequencer RoHS:否 制造商:Analog Devices 通道数量: 结构: 转换速率: 分辨率: 输入类型: 信噪比: 接口类型: 工作电源电压: 最大工作温度: 安装风格: 封装 / 箱体: |
| AD7923SRU-EP-RL7 | 功能描述:模数转换器 - ADC 4CH 200 kSPS 12-Bit W/ Sequencer RoHS:否 制造商:Analog Devices 通道数量: 结构: 转换速率: 分辨率: 输入类型: 信噪比: 接口类型: 工作电源电压: 最大工作温度: 安装风格: 封装 / 箱体: |
| AD7923WYRUZ-REEL7 | 功能描述:IC ADC 12BIT 4CH W/SEQ 16TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:2,500 系列:- 位数:16 采样率（每秒）:15 数据接口:MICROWIRE?，串行，SPI? 转换器数目:1 功率耗散（最大）:480µW 电压电源:单电源 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:38-WFQFN 裸露焊盘 供应商设备封装:38-QFN（5x7） 包装:带卷 (TR) 输入数目和类型:16 个单端，双极；8 个差分，双极 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
| AD7924 | 制造商:AD 制造商全称:Analog Devices 功能描述:4-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 16-Lead TSSOP |
| AD7924BRU | 功能描述:IC ADC 12BIT 4CH 1MSPS 16-TSSOP RoHS:否 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:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 电压电源:单电源 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
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