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參數資料
| 型號： | AD7813YR |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | +2.7 V to +5.5 V, 400 kSPS 8-/10-Bit Sampling ADC |
| 中文描述： | 1-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO16 |
| 封裝： | 0.150 INCH, SOIC-16 |
| 文件頁數： | 9/11頁 |
| 文件大?。?/td> | 185K |
| 代理商： | AD7813YR |
AD7813
–9–
REV. B
PARALLEL INTERFACE
The parallel interface of the AD7813 is eight bits wide. The
output data buffers are activated when both
CS
and
RD
are
logic low. At this point the contents of the data register are
placed on the 8-bit data bus. Figure 15 shows the timing dia-
gram for the parallel port. As previously explained, two succes-
sive read operations must take place in order to access the 10-bit
conversion result. The first read places the 8 MSBs on the data
bus and the second read places the 2 LSBs on the data bus. The
2 LSBs appear on DB7 and DB6, with DB5–DB0 set to logic zero.
Further read operations will access the 8 MSBs and 2 LSBs of
the 10-bit ADC conversion result again. The parallel interface
of the AD7813 is reset when BUSY goes logic high. This feature
allows the AD7813 to be used as an 8-bit converter if the user
only wishes to access the 8 MSBs of the conversion. Care must
be taken to ensure that a read operation does not occur while
BUSY is high. Data read from the AD7813 while BUSY is high
will be invalid. For optimum performance the read operation
should end at least 100 ns (t
10
) prior to the falling edge of the
next
CONVST
.
8 MSBs
t
1
t
2
t
3
t
POWER-UP
EXT
CONVST
INT
CONVST
BUSY
CS
/
RD
DB7
–
DB0
2 LSBs
Figure 13. Mode 1 Operation
8 MSBs
t
1
t
3
EXT
CONVST
INT
CONVST
BUSY
CS
/
RD
DB7
–
DB0
t
POWER-UP
Figure 14. Mode 2 Operation
CONVST
BUSY
CS
DB7
–
DB0
t
2
t
3
t
1
t
4
t
6
t
7
t
5
RD
t
8
t
9
8 MSBs
2 MSBs
Figure 15. Parallel Port Timing
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7813YR-REEL | 制造商:Analog Devices 功能描述:ADC Single SAR 400ksps 10-bit Parallel 16-Pin SOIC N T/R |
| AD7813YR-REEL7 | 制造商:Analog Devices 功能描述:ADC Single SAR 400ksps 10-bit Parallel 16-Pin SOIC N T/R |
| AD7813YRU | 功能描述:IC ADC 10BIT PARALLEL 16-TSSOP RoHS:否 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 位數:12 采樣率（每秒）:3M 數據接口:- 轉換器數目:- 功率耗散（最大）:- 電壓電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應商設備封裝:SOT-23-6 包裝:帶卷 (TR) 輸入數目和類型:- |
| AD7813YRU-REEL | 制造商:Analog Devices 功能描述:ADC Single SAR 400ksps 10-bit Parallel 16-Pin TSSOP T/R 制造商:Analog Devices 功能描述:ADC SGL SAR 400KSPS 10-BIT PARALLEL 16TSSOP - Tape and Reel |
| AD7813YRU-REEL7 | 制造商:Analog Devices 功能描述:ADC Single SAR 400ksps 10-bit Parallel 16-Pin TSSOP T/R |
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