- 您现在的位置：买卖IC网 > PDF目录294844 > AD7944 (Analog Devices, Inc.) 3mW, 100kSPS, 14-Bit ADC in 6-Lead SOT-23 PDF资料下载
参数资料
| 型号： | AD7944 |
| 厂商： | Analog Devices, Inc. |
| 元件分类： | ADC |
| 英文描述： | 3mW, 100kSPS, 14-Bit ADC in 6-Lead SOT-23 |
| 中文描述： | 3MW的，100ksps的14位ADC的6引脚SOT - 23 |
| 文件页数： | 7/20页 |
| 文件大小： | 480K |
| 代理商： | AD7944 |
AD7940
Rev. 0 | Page 15 of 20
POWER VS. THROUGHPUT RATE
By using the power-down mode on the AD7940 when not
converting, the average power consumption of the ADC
decreases at lower throughput rates. Figure 19 shows how as the
throughput rate is reduced, the part remains in its shutdown
state longer, and the average power consumption over time
drops accordingly.
For example, if the AD7940 is operated in a continuous sam-
pling mode, with a throughput rate of 10 kSPS and an SCLK of
2.5 MHz (VDD = 3.6 V), and the device is placed in power-down
mode between conversions, the power consumption is calcu-
lated as follows. The maximum power dissipation during nor-
mal operation is 6.84 mW (VDD = 3.6 V). If the power-up time
from power-down is 1 s, and the remaining conversion time is
6.4 s, (using a 16 SCLK transfer), then the AD7940 can be said
to dissipate 6.84 mW for 7.4 s during each conversion cycle.
With a throughput rate of 10 kSPS, the cycle time is 100 s. For
the remainder of the conversion cycle, 92.6 s, the part remains
in power-down mode. The AD7940 can be said to dissipate
1.08 W for the remaining 92.6 s of the conversion cycle.
Therefore, with a throughput rate of 10 kSPS, the average power
dissipated during each cycle is
(7.4/100) × (6.84 mW) + (92.6/100) × (1.08 W) = 0.51 mW
Figure 19 shows the power dissipation versus the throughput
rate when using the power-down mode with 3.6 V supplies and
a 2.5 MHz SCLK.
03305-0-012
P
O
WE
R
(mW)
0.01
0
5
10
15
20
25
THROUGHPUT (kSPS)
30
35
40
45
50
0.1
1
10
VDD = 3.6V
FSCLK = 2.5MHz
Figure 19. Power vs. Throughput Using Power-Down Mode at 3.6 V
相关PDF资料 |
PDF描述 |
|---|---|
| AD7946BRM | 14-Bit, 500 kSPS PulSAR⑩ ADC in MSOP/QFN |
| AD7946 | 14-Bit, 500 kSPS PulSAR⑩ ADC in MSOP/QFN |
| AD8138-EVAL | Low Distortion Differential ADC Driver |
| AD8138AR | Low Distortion Differential ADC Driver |
| AD8139ACP-REEL | Low Noise Rail-to-Rail Differential ADC Driver |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7944BCPZ | 功能描述:IC ADC 14BIT 2.5MSPS 20LFCSP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:PulSAR® 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 |
| AD7944BCPZ-RL7 | 功能描述:IC ADC 14B 2.5MSPS PULSR 20LFCSP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:PulSAR® 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 |
| AD7945 | 制造商:AD 制造商全称:Analog Devices 功能描述:+3.3 V/+5 V Multiplying 12-Bit DACs |
| AD7945AN-B | 功能描述:IC DAC 12BIT MULT PARALL 20-DIP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 标准包装:2,400 系列:- 设置时间:- 位数:18 数据接口:串行 转换器数目:3 电压电源:模拟和数字 功率耗散（最大）:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:36-TFBGA 供应商设备封装:36-TFBGA 包装:带卷 (TR) 输出数目和类型:* 采样率（每秒）:* |
| AD7945ANZ-B | 功能描述:IC DAC 12BIT MULT PARALL 20DIP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 标准包装:47 系列:- 设置时间:2µs 位数:14 数据接口:并联 转换器数目:1 电压电源:单电源 功率耗散（最大）:55µW 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:28-SSOP（0.209"，5.30mm 宽） 供应商设备封装:28-SSOP 包装:管件 输出数目和类型:1 电流，单极；1 电流，双极 采样率（每秒）:* |
发布紧急采购，3分钟左右您将得到回复。