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參數(shù)資料
| 型號： | AD7467BRTZ-REEL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 14/29頁 |
| 文件大小： | 0K |
| 描述： | IC ADC 10BIT 1.6V MCRPWR SOT23-6 |
| 產(chǎn)品變化通告： | Product Discontinuance 27/Oct/2011 |
| 標準包裝： | 10,000 |
| 位數(shù)： | 10 |
| 采樣率（每秒）： | 200k |
| 數(shù)據(jù)接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 900µW |
| 電壓電源： | 單電源 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | SOT-23-6 |
| 供應商設備封裝： | SOT-23-6 |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 1 個單端，單極 |
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AD7466/AD7467/AD7468
Rev. C | Page 20 of 28
POWER CONSUMPTION
The AD7466/AD7467/AD7468 automatically enter power-
down mode at the end of each conversion or if CS is brought
high before the conversion is finished.
When the AD7466/AD7467/AD7468 are in power-down mode,
all the analog circuitry is powered down and the current con-
sumption is typically 8 nA.
To achieve the lowest power dissipation, there are some
considerations the user should keep in mind.
The conversion time is determined by the serial clock
frequency; the faster the SCLK frequency, the shorter the
conversion time. This implies that as the frequency increases,
the part dissipates power for a shorter period of time when the
conversion is taking place, and it remains in power-down mode
for a longer percentage of the cycle time or throughput rate.
Figure 26 shows two AD7466s running with two different
SCLK frequencies, SCLK A and SCLK B, with SCLK A having
the higher SCLK frequency. For the same throughput rate, the
AD7466 using SCLK A has a shorter conversion time than the
AD7466 using SCLK B, and it remains in power-down mode
longer. The current consumption in power-down mode is very
low; thus, the average power consumption is greatly reduced.
This reduced power consumption can be seen in Figure 25,
which shows the supply current vs. SCLK frequency for various
supply voltages at a throughput rate of 100 kSPS. For a fixed
throughput rate, the supply current (average current) drops as
the SCLK frequency increases because the part is in power-
down mode most of the time. It can also be seen that, for a
lower supply voltage, the supply current drops accordingly.
390
S
U
P
L
Y
CURRE
NT
(
μA)
360
330
300
270
240
210
180
150
120
90
60
2.2
2.4
2.6
2.8
3.0
3.2
3.4
3.6
SCLK FREQUENCY (MHz)
fSAMPLE = 100kSPS
TEMP = 25
°C
VDD = 3.6V
VDD = 3.0V
VDD = 2.2V
VDD = 2.7V
VDD = 1.8V
VDD = 1.6V
02643-026
Figure 25. Supply Current vs. SCLK Frequency
for a Fixed Throughput Rate and Different Supply Voltages
SCLK B
SCLK A
116
CONVERSION TIME A
CONVERSION TIME B
1/THROUGHPUT
CS
02643-027
Figure 26. Conversion Time Comparison for Different SCLK Frequencies and a Fixed Throughput Rate
POWER DOWN TIME B
1/THROUGHPUT B
1/THROUGHPUT A
POWER DOWN TIME A
CONVERSION TIME A
CONVERSION TIME B
CS A
SCLK
CS B
116
02643-028
Figure 27. Conversion Time vs. Power-Down Time for a Fixed SCLK Frequency and Different Throughput Rates
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相關代理商/技術參數(shù) |
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| AD7467BRTZ-REEL7 | 功能描述:IC ADC 10BIT 1.6V MCRPWR SOT23-6 RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝:2,500 系列:- 位數(shù):16 采樣率（每秒）:15 數(shù)據(jù)接口:MICROWIRE?，串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:480µW 電壓電源:單電源 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:38-WFQFN 裸露焊盤 供應商設備封裝:38-QFN（5x7） 包裝:帶卷 (TR) 輸入數(shù)目和類型:16 個單端，雙極；8 個差分，雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
| AD7468 | 制造商:AD 制造商全稱:Analog Devices 功能描述:1.6 V, Micropower 12-/10-/8-Bit ADCs |
| AD7468BRM | 功能描述:IC ADC 8BIT MCRPWR 1.6V 8-MSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝:2,500 系列:- 位數(shù):16 采樣率（每秒）:15 數(shù)據(jù)接口:MICROWIRE?，串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:480µW 電壓電源:單電源 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:38-WFQFN 裸露焊盤 供應商設備封裝:38-QFN（5x7） 包裝:帶卷 (TR) 輸入數(shù)目和類型:16 個單端，雙極；8 個差分，雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
| AD7468BRM-REEL | 制造商:Analog Devices 功能描述:ADC Single SAR 320ksps 8-bit Serial 8-Pin MSOP T/R 制造商:Analog Devices 功能描述:ADC SGL SAR 320KSPS 8BIT SERL 8MSOP - Tape and Reel |
| AD7468BRM-REEL7 | 制造商:Analog Devices 功能描述:ADC Single SAR 320ksps 8-bit Serial 8-Pin MSOP T/R |
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