AD574AK

更新时间： 2024-02-26 14:28:24

品牌	Logo	应用领域
亚德诺 - ADI		转换器
页数	文件大小	规格书
12页	383K
描述
Complete 12-Bit A/D Converter

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中文翻译

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技术参数
数据手册

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AD574AK 技术参数

生命周期：	Contact Manufacturer	包装说明：	,
Reach Compliance Code：	unknown	HTS代码：	8542.39.00.01
风险等级：	5.56	转换器类型：	ADC, SUCCESSIVE APPROXIMATION
输出位码：	OFFSET BINARY	Base Number Matches：	1

AD574AK 数据手册

AD574A

Note: Due to the large number of options that may be installed

in the PC, the I/O bus loading should be limited to oneSchottky

TTL load. Therefore, a buffer/driver should be used when inter-

facing more than two AD574As to the I/O bus.

8086 Interface

The data mode select pin (12/8) of the AD574A should be con-

nected to V_LOGICto provide a 12-bit data output. To prevent

possible bus contention, a demultiplexed and buffered address/

data bus is recommended. In the cases where the 8-bit short

conversion cycle is not used, A0 should be tied to digital com-

mon. Figure 18 shows a typical 8086 configuration.

Figure 15. Z80—AD574A Interface

Figure 16. Wait State Generator

IBM PC Interface

The AD574A appears in Figure 17 interfaced to the 4 MHz

8088 processor of an IBM PC. Since the device resides in I/O

space, its address is decoded from only the lower ten address

lines and must be gated with AEN (active low) to mask out in-

ternal DMA cycles which use the same I/O address space. This

active low signal is applied to CS. IOR and IOW are used to

initiate the conversion and read, and are gated together to drive

the chip enable, CE. Because the data bus width is limited to

8 bits, the AD574A data resides in two adjacent addresses

selected by A0.

Figure 18. 8086—AD574A with Buffered Bus lnterface

For clock speeds greater than 4 MHz wait state insertion similar

to Figure 16 is recommended to ensure sufficient CE and R/C

pulse duration.

The AD574A can also be interfaced in a stand-alone mode (see

Figure 13). A low going pulse derived from the 8086’s WR sig-

nal logically ORed with a low address decode starts the conver-

sion. At the end of the conversion, STS clocks the data into the

three-state latches.

68000 Interface

The AD574, when configured in the stand-alone mode, will eas-

ily interface to the 4 MHz version of the 68000 microprocessor.

The 68000 R/W signal combined with a low address decode ini-

tiates conversion. The UDS or LDS signal, with the decoded

address, generates the DTACK input to the processor, latching

in the AD574A’s data. Figure 19 illustrates this configuration.

Figure 17. IBM PC—AD574A Interface

REV. B

Figure 19. 68000—AD574A Interface

–11–

1...8 9 101112

中文翻译

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与AD574AK相关器件

型号	品牌	描述	获取价格	数据表
AD574AKD	ADI	Complete 12-Bit A/D Converter	获取价格
AD574AKD	ROCHESTER	ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Parallel, Word Access, Bipolar,	获取价格
AD574AKD/+	ETC	Analog-to-Digital Converter， 12-Bit	获取价格
AD574AKE	ROCHESTER	ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Parallel, Word Access, Bipolar,	获取价格
AD574AKE	ADI	Complete 12-Bit A/D Converter	获取价格
AD574AKN	ADI	Complete 12-Bit A/D Converter	获取价格
AD574AKN	ROCHESTER	ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Parallel, Word Access, Bipolar,	获取价格
AD574AKN/+	ROCHESTER	1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDIP28, PLASTIC, DIP-28	获取价格
AD574AKNZ	ROCHESTER	ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Parallel, Word Access, Bipolar,	获取价格
AD574AKP	ADI	Complete 12-Bit A/D Converter	获取价格
AD574AKP	ROCHESTER	ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Parallel, Word Access, Bipolar,	获取价格
AD574AKPZ	ADI	暂无描述	获取价格
AD574AKPZ-REEL	ADI	IC,A/D CONVERTER,SINGLE,12-BIT,BIPOLAR,LLCC,28PIN	获取价格
AD574AKX	ADI	Complete 12-Bit A/D Converter	获取价格
AD574AL	ADI	Complete 12-Bit A/D Converter	获取价格
AD574ALD	ADI	Complete 12-Bit A/D Converter	获取价格
AD574ALD/+	ROCHESTER	1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, CDIP28, HERMETIC SEALED, SIDE B	获取价格
AD574ALN	ADI	Complete 12-Bit A/D Converter	获取价格
AD574ALN	ROCHESTER	ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Parallel, Word Access, Bipolar,	获取价格
AD574ALNZ	ADI	Complete 12-Bit A/D Converter	获取价格

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