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参数资料
| 型号： | AD7467BRT |
| 厂商： | ANALOG DEVICES INC |
| 元件分类： | ADC |
| 英文描述： | 1.8 V, Micro-Power, 8/10/12-Bit ADCs in 6 Lead SOT-23 |
| 中文描述： | 1-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO6 |
| 封装： | MO-178AB, SOT-23, 6 PIN |
| 文件页数： | 10/24页 |
| 文件大小： | 327K |
| 代理商： | AD7467BRT |
–18–
REV. PrF
PRELIMINARY TECHNICAL DATA
AD7466/AD7467/AD7468
Figure 13. Power vs Throughput for different SCLK
and supply voltages
Figure 12. Conversion Time vs Power down Time for a fixed SCLK frequency
and different Throughput rates
0
0.2
0.4
0.6
0.8
1
1.2
1.4
0
50
100
150
200
250
THROUGHPUT - KSPS
POW
ER
-
mW
VDD = 1.8 V, SCLK = 3.4 MHz
VDD = 3.0 V, SCLK = 2 .4 MHz
VDD = 3.0 V, SCLK = 3.4 MHz
VDD = 1.8 V, SCLK = 2.4 MHz
Temp = 25
oC
SCLK
1
16
&6 A
&6 B
Conversion Time A
Power down Time A
Power down Time B
1/Throughput A
1/Throughput B
Conversion Time B
The following two examples will illustrate by means of some calculations, what has been explained in this section.
Power Consumption Example 1
This example shows that for a fixed throughput rate, as the SCLK frequency increases the average power consumption
drops. From Figure 10, having SCLK A= 3.4 MHz, SCLK B= 1.2 MHz and a throughput rate of 50KSPS, which gives
a cycle time of 20
s, the following values can be obtained:
Conversion time A= 16 x (1/SCLK A) = 4.7
s (23.5% of the cycle time)
Power down time A= (1/throughput) - Conversion time A = 20
s - 4.7s = 15.3s (76.5% of the cycle time)
Conversion time B= 16 x (1/SCLK B) = 13
s
(65% of the cycle time)
Power down time B= (1/throughput) - Conversion time B = 20
s - 13s = 7s (35% of the cycle time)
TPC14 in the Performance Curves section, shows Power
consumption versus Throughput rate for a 3.4MHz SCLK
frequency. In this case the conversion time will be the
same for all the cases, as the SCLK frequency is a fixed
parameter. Low throughput rates will lead to lower
current consumptions, with a higher percentage of the
time in power down mode. Figure 12 shows two AD7466
running with the same SCLK frequency but at different
throughput rates. The throughput rate for the AD7466
called A is higher than for the AD7466 called B. The
slower the throughput rate, the longer the period of time
the part will be in power down mode, and the average
power consumption will drop accordingly.
Figure 13 shows Power versus Throughput rate for
different supply voltages and SCLK frequencies. In this
plot all the elements that have been explained above, that
is, the influence of the SCLK frequency, the influence of
the throughput rate and the influence of the supply
voltage, in the power consumption are taken into
consideration.
相关PDF资料 |
PDF描述 |
|---|---|
| AD7468BRT | 1.8 V, Micro-Power, 8/10/12-Bit ADCs in 6 Lead SOT-23 |
| AD7466 | 1.8 V, Micro-Power, 8/10/12-Bit ADCs in 6 Lead SOT-23 |
| AD7467 | 1.8 V, Micro-Power, 8/10/12-Bit ADCs in 6 Lead SOT-23 |
| AD7468 | 1.8 V, Micro-Power, 8/10/12-Bit ADCs in 6 Lead SOT-23 |
| AD746A | Dual Precision, 500 ns Settling, BiFET Op Amp |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7467BRT-R | 制造商:AD 制造商全称:Analog Devices 功能描述:1.6 V, Micropower 12-/10-/8-Bit ADCs |
| AD7467BRT-R2 | 功能描述:IC ADC 10BIT 1.6V LP SOT23-6 RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 位数:12 采样率（每秒）:3M 数据接口:- 转换器数目:- 功率耗散（最大）:- 电压电源:- 工作温度:- 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-23-6 包装:带卷 (TR) 输入数目和类型:- |
| AD7467BRT-REEL | 制造商:AD 制造商全称:Analog Devices 功能描述:1.6 V, Micropower 12-/10-/8-Bit ADCs |
| AD7467BRT-REEL7 | 制造商:AD 制造商全称:Analog Devices 功能描述:1.6 V, Micropower 12-/10-/8-Bit ADCs |
| AD7467BRTZ-R | 制造商:AD 制造商全称:Analog Devices 功能描述:1.6 V, Micropower 12-/10-/8-Bit ADCs |
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