- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄17070 > AD7940-DBRD (Analog Devices Inc)BOARD EVAL FOR AD7940 STAMP SPI PDF資料下載
參數(shù)資料
| 型號： | AD7940-DBRD |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 7/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVAL FOR AD7940 STAMP SPI |
| 標準包裝： | 1 |
| ADC 的數(shù)量： | 1 |
| 位數(shù)： | 14 |
| 采樣率（每秒）： | 100k |
| 數(shù)據(jù)接口： | 串行 |
| 輸入范圍： | 0 ~ Vdd |
| 在以下條件下的電源（標準）： | 17mW @ 100kSPS & 5V |
| 工作溫度： | -40°C ~ 85°C |
| 已用 IC / 零件： | AD7940 |
| 已供物品： | 板 |
| 相關產(chǎn)品： | AD7940BRJZ-REEL7DKR-ND - IC ADC 14BIT 100KSPS SOT-23-6 AD7940BRJZ-REEL7CT-ND - IC ADC 14BIT 100KSPS SOT-23-6 AD7940BRJZ-REEL7TR-ND - IC ADC 14BIT 100KSPS SOT-23-6 AD7940BRM-ND - IC ADC 14BIT UNIPOLAR 8-MSOP AD7940BRM-REEL7TR-ND - IC ADC 14BIT UNIPOLAR 8-MSOP |
AD7940
Rev. A | 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
sampling 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
calculated as follows. The maximum power dissipation during
normal 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
POWER
(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
相關PDF資料 |
PDF描述 |
|---|---|
| EVAL-AD5663REBZ | BOARD EVAL FOR AD5663 |
| NRS6010T3R3MMGF | INDUCTOR POWER 3.3UH 1.5A SMD |
| EVAL-AD5390EBZ | BOARD EVALUATION FOR AD5390 |
| MIC2026-1YM TR | IC SW DISTRIBUTION 2CHAN 8SOIC |
| EVAL-AD5680EBZ | BOARD EVAL FOR AD5680 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AD7942 | 制造商:AD 制造商全稱:Analog Devices 功能描述:16-Bit, +/-0.65 LSB INL, 500 kSPS PulSAR Differential ADC in MSOP/QFN |
| AD79421 | 制造商:AD 制造商全稱:Analog Devices 功能描述:18-Bit, 2 MSPS PulSAR 15 mW ADC in LFCSP (QFN) |
| AD7942BCPRL7 | 制造商:AD 制造商全稱:Analog Devices 功能描述:14-Bit, 250 kSPS PulSAR ADC in MSOP/QFN |
| AD7942BCPWP | 制造商:AD 制造商全稱:Analog Devices 功能描述:14-Bit, 250 kSPS PulSAR ADC in MSOP/QFN |
| AD7942BCPZRL | 功能描述:IC ADC 14BIT SAR 250KSPS 10LFCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:PulSAR® 標準包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極 |
發(fā)布緊急采購，3分鐘左右您將得到回復。