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參數資料
型號: AD7777AR
廠商: ANALOG DEVICES INC
元件分類: ADC
英文描述: LC2MOS, High Speed 1-, 4- & 8-Channel 10-Bit ADCs
中文描述: 4-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
封裝: MS-013AE, SOIC-28
文件頁數: 8/12頁
文件大小: 220K
代理商: AD7777AR
AD7776/AD7777/AD7778
–8–
REV. 0
Microprocessor Interfacing Circuits
T he AD7776/AD7777/AD7778 family of ADCs is intended to
interface to DSP machines such as the ADSP-2101, ADSP-2105,
the T MS320 family and microcontrollers such as the 80C196
family.
Figure 7 shows the AD7776/AD7777/AD7778 interfaced to the
T MS320C10 @ 20.5 MHz and the T MS320C14 @ 25 MHz.
Figure 8 shows the interface with the T MS320C25 @ 40 MHz.
Note that one wait state is required with this interface. T he
ADSP-2101-50 and the ADSP-2105-40 interface is shown in
Figure 9. One wait state is required with either of these machines.
*
ADDITIONAL PINS OMITTED FOR CLARITY
ADDR
DECODE
ADDRESS BUS
DATA BUS
D15–D0
TMS320C10-20.5
TMS320C14-25
A11–A0
WE
(C10) DEN
(C14) REN
CS
AD7776/7/8*
DB9–DB0
RD
WR
Figure 7. AD7776/AD7777/AD7778 to TMS320C10 and
TMS320C14 Interface
ADDRESS BUS
DATA BUS
*
ADDITIONAL PINS OMITTED FOR CLARITY
CS
AD7776/7/8*
DB9–DB0
RD
WR
ADDR
DECODE
D15–D0
A15–A0
IS
READY
MSC
STRB
R/W
TMS320C25-40
Figure 8. AD7776/AD7777/AD7778 to TMS320C25 Interface
Figure 10 shows the interface with the 80C196K B @ 12 MHz
and the 80C196K C @ 16 MHz. One wait state is required with
the 16 MHz machine. T he 80C196 is configured to operate
with a 16-bit multiplexed address/data bus.
T able I gives a truth table for the AD7776/AD7777/AD7778
and summarizes their microprocessor interfacing features. Note
that a read instruction to any of the devices while a conversation
is in progress will immediately stop that conversion and return
unreliable data over the data bus.
*
ADDITIONAL PINS OMITTED FOR CLARITY
ADDRESS BUS
DATA BUS
CS
AD7776/7/8*
DB9–DB0
RD
WR
D23–D6
A13–A0
WR
RD
DMS
ADSP-2101-50
ADSP-2105-40
ADDR
DECODE
EN
Figure 9. AD7776/AD7777/AD7778 to ADSP-2101 and
ADSP-2105 Interface
*
ADDITIONAL PINS OMITTED FOR CLARITY
DATA BUS (10)
CS
DB9–DB0
AD7776/7/8*
RD
WR
ADDR
DECODER
'373
LATCH
ADDRESS BUS
AD7–AD0
(PORT 3)
AD15–AD6
(PORT 4)
WR
RD
80C196KB-12
80C196KC-16
ALE
Figure 10. AD7776/AD7777/AD7778 to 80C196 Interface
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相關代理商/技術參數
參數描述
AD7777AR-REEL 制造商:Analog Devices 功能描述:ADC Single SAR 378ksps 10-bit Parallel 28-Pin SOIC W T/R
AD7777ARZ 功能描述:IC ADC 10BIT 4CH HS 28SOIC RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 其它有關文件:TSA1204 View All Specifications 標準包裝:1 系列:- 位數:12 采樣率(每秒):20M 數據接口:并聯 轉換器數目:2 功率耗散(最大):155mW 電壓電源:模擬和數字 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-TQFP 供應商設備封裝:48-TQFP(7x7) 包裝:Digi-Reel® 輸入數目和類型:4 個單端,單極;2 個差分,單極 產品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6
AD7777ARZ-REEL 功能描述:IC ADC 10BIT 4CHAN HS 28SOIC RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:12 采樣率(每秒):300k 數據接口:并聯 轉換器數目: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) 輸入數目和類型:1 個單端,單極;1 個單端,雙極
AD7778 制造商:AD 制造商全稱:Analog Devices 功能描述:LC2MOS, High Speed 1-, 4- & 8-Channel 10-Bit ADCs
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