- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄10186 > AD7864ASZ-1REEL (Analog Devices Inc)IC ADC 12BIT DUAL 4CH 44-MQFP PDF資料下載
參數(shù)資料
| 型號(hào)： | AD7864ASZ-1REEL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 17/28頁 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT DUAL 4CH 44-MQFP |
| 標(biāo)準(zhǔn)包裝： | 800 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 520k |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 120mW |
| 電壓電源： | 模擬和數(shù)字 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 44-QFP |
| 供應(yīng)商設(shè)備封裝： | 44-MQFP（10x10） |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 4 個(gè)差分，雙極 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁當(dāng)前第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁
AD7864
Rev. D | Page 24 of 28
MICROPROCESSOR INTERFACING
The high speed parallel interface of the AD7864 allows easy
interfacing to most DSPs and microprocessors. This interface
consists of the data lines (DB0 to DB11), CS, RD, WR, EOC,
and BUSY.
AD7864 TO ADSP-2100/ADSP-2101/ADSP-2102
INTERFACE
Figure 23 shows an interface between the AD7864 and the
ADSP-210x. The CONVST signal can be generated by the
ADSP-210x or from some other external source.
shows the
CS being generated by a combination of the DMS
signal and the address bus of the ADSP-210x. In this way, the
AD7864 is mapped into the data memory space of the
ADSP-210x.
The AD7864 BUSY line provides an interrupt to the ADSP-210x
when the conversion sequence is complete on all the selected
channels. The conversion results can then be read from the
AD7864 using successive read operations. Alternately, one can
use the EOC pulse to interrupt the ADSP-210x when the
conversion on each channel is complete when reading between
each conversion in the conversion sequence (
). The
AD7864 is read using the following instruction:
MR0 = DM(ADC)
where MR0 is the ADSP-210x MR0 register and ADC is the
AD7864 address.
CS
RD
WR
BUSY
CONVST
DB0 TO DB11
AD7864
VIN1
VIN2
VIN3
VIN4
DT1/F0
IRQn
RD
WR
D0 TO D24
DMS
A0 TO A13
ADSP-210x
ADDRESS
DECODE
01
34
1-
0
23
Figure 23. AD7864 to ADSP-210x Interface
AD7864 TO TMS320C5x INTERFACE
Figure 24 shows an interface between the AD7864 and the
TMS320C5x. As with the previous interfaces, conversion can be
initiated from the TMS320C5x or from an external source, and
the processor is interrupted when the conversion sequence is
completed. The CS signal to the AD7864 is derived from the DS
signal and a decode of the address bus. This maps the AD7864
into external data memory. The RD signal from the TMS320C5x
is used to enable the ADC data onto the data bus. The AD7864
has a fast parallel bus, consequently there are no wait state
requirements. The following instruction is used to read the
conversion results from the AD7864:
IN D,ADC
where D is the data memory address and ADC is the AD7864
address.
CS
RD
WR
BUSY
CONVST
DB0 TO DB11
AD7864
VIN1
VIN2
VIN3
VIN4
PA0
INTn
RD
WE
D0 TO D15
DS
A0 TO A13
TMS320C5x
ADDRESS
DECODE
01
34
1-
0
24
Figure 24. AD7864 to TMS320C5x Interface
AD7864 TO MC68HC000 INTERFACE
An interface between the AD7864 and the MC68HC000 is
shown in Figure 25. The conversion can be initiated from the
MC68HC000 or from an external source. The AD7864 BUSY
line can be used to interrupt the processor or, alternatively,
software delays can ensure that the conversion has been
completed before a read to the AD7864 is attempted. Because of
the nature of its interrupts, the MC68HC000 requires additional
logic (not shown in Figure 25) to allow it to be interrupted
correctly. For further information on MC68HC000 interrupts,
consult the Addendum to MC68000 Users Manual.
The MC68HC000 AS and R/W outputs are used to generate a
separate RD input signal for the AD7864. RD is used to drive
the MC68HC000 DTACK input to allow the processor to
execute a normal read operation to the AD7864. The conversion
results are read using the following MC68HC000 instruction:
MOVE.W ADC,D0
where D0 is the MC68HC000 D0 register and ADC is the
AD7864 address.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP206EA-L/TR | IC TXRX RS232 SERIAL 24SSOP |
| SF4281V-12EPG-3ES | CONN RCPT 12POS PNL MNT PIN |
| VI-2NF-CU-F1 | CONVERTER MOD DC/DC 72V 200W |
| CXS3106A1812S | CONN PLUG 6POS STRGHT SKT |
| VI-2ND-IW-S | CONVERTER MOD DC/DC 85V 100W |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7864ASZ-1REEL2 | 制造商:AD 制造商全稱:Analog Devices 功能描述:4-Channel, Simultaneous Sampling, High Speed, 12-Bit ADC |
| AD7864ASZ-2 | 功能描述:IC ADC 12BIT PAR 520K 4CH 44MQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 其它有關(guān)文件:TSA1204 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):12 采樣率（每秒）:20M 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:155mW 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-TQFP 供應(yīng)商設(shè)備封裝:48-TQFP（7x7） 包裝:Digi-Reel® 輸入數(shù)目和類型:4 個(gè)單端，單極；2 個(gè)差分，單極 產(chǎn)品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6 |
| AD7864ASZ-22 | 制造商:AD 制造商全稱:Analog Devices 功能描述:4-Channel, Simultaneous Sampling, High Speed, 12-Bit ADC |
| AD7864ASZ-2REEL | 功能描述:IC ADC 12BIT PAR 520K 4CH 44MQFP 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(biāo)準(zhǔn)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(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個(gè)單端，單極；1 個(gè)單端，雙極 |
| AD7864ASZ-2REEL2 | 制造商:AD 制造商全稱:Analog Devices 功能描述:4-Channel, Simultaneous Sampling, High Speed, 12-Bit ADC |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。