參數(shù)資料
型號(hào)： AD7467BRT
廠商： ANALOG DEVICES INC
元件分類： 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
封裝： MO-178AB, SOT-23, 6 PIN
文件頁(yè)數(shù)： 10/24頁(yè)
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.
相關(guān)PDF資料
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
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD7467BRT-R 制造商:AD 制造商全稱: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 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 位數(shù):12 采樣率（每秒）:3M 數(shù)據(jù)接口:- 轉(zhuǎn)換器數(shù)目:- 功率耗散（最大）:- 電壓電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-23-6 包裝:帶卷 (TR) 輸入數(shù)目和類型:-
AD7467BRT-REEL 制造商:AD 制造商全稱:Analog Devices 功能描述:1.6 V, Micropower 12-/10-/8-Bit ADCs
AD7467BRT-REEL7 制造商:AD 制造商全稱:Analog Devices 功能描述:1.6 V, Micropower 12-/10-/8-Bit ADCs
AD7467BRTZ-R 制造商:AD 制造商全稱:Analog Devices 功能描述:1.6 V, Micropower 12-/10-/8-Bit ADCs
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