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參數(shù)資料
| 型號： | AD7821 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | LC2MOS High Speed, μP-Compatible 8-Bit ADC with Track/Hold Function(帶跟蹤/保持功能,LC2MOSμP兼容8位高速A/D轉(zhuǎn)換器) |
| 中文描述： | LC2MOS高速，微處理器兼容的8位ADC的采樣/保持功能（帶跟蹤/保持功能，LC2MOSμP兼容8位高速的A / D轉(zhuǎn)換器） |
| 文件頁數(shù)： | 12/12頁 |
| 文件大?。?/td> | 263K |
| 代理商： | AD7821 |
AD7821
REV. A
–12–
OUT LINE DIME NSIONS
Dimensions shown in inches and (mm).
20-Pin Plastic DIP (N-20)
20-Pin Cerdip (Q-20)
20-T erminal Plastic Leaded Chip Carrier
(P-20A)
20-T erminal Leadless Ceramic Chip Carrier
(E -20A)
C
P
SIMULT ANE OUS SAMPLING A/D CONVE RT E RS
T he AD7821’s inherent track-and-hold and well-defined sam-
pling instant makes it useful, in such applications as sonar,
where a number of input channels are required to be sampled
simultaneously. Figure 22 shows a circuit for such an applica-
tion.
Figure 22. Simultaneous Sampling A/D Converters
T he actual sampling instant, which is the instant at which V
IN
is
measured, occurs approximately 50 ns after the falling edge of
WR
or
RD
in the WR-RD or RD modes, respectively, due to in-
ternal logic delays. However, the internal logic delay and, there-
fore, the sampling instant can vary from device to device, but is
typically within
±
5 ns. T his means that a maximum common in-
put sine wave of
±
2.5 V at 32 kHz, applied to any number of
AD7821s in the circuit of Figure 22, will yield a maximum dif-
ference between the converter outputs of typically
±
1/4 LSB.
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| AD7821BQ | 功能描述:IC ADC 8BIT HS TRACK/HOLD 20CDIP 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:1 系列:- 位數(shù):14 采樣率（每秒）:83k 數(shù)據(jù)接口:串行，并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應商設備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個單端，雙極 |
| AD7821KN | 功能描述:IC ADC 8BIT LC2MOS T/H HS 20-DIP 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:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個單端，單極；1 個單端，雙極 |
| AD7821KNZ | 功能描述:IC ADC 8BIT LC2MOS T/H HS 20-DIP 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:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個單端，單極；1 個單端，雙極 |
| AD7821KNZ | 制造商:Analog Devices 功能描述:IC 8-BIT ADC |
| AD7821KP | 制造商:AD 制造商全稱:Analog Devices 功能描述:LC2MOS High Speed, mP-Compatible 8-Bit ADC with Track/Hold Function |
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