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參數資料
| 型號： | AD7680BRM-REEL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 10/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 16BIT LP UNIPOLR 8MSOP TR |
| 標準包裝： | 1,000 |
| 系列： | PulSAR® |
| 位數： | 16 |
| 采樣率（每秒）： | 100k |
| 數據接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 轉換器數目： | 1 |
| 功率耗散（最大）： | 26.4mW |
| 電壓電源： | 單電源 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應商設備封裝： | 8-MSOP |
| 包裝： | 帶卷 (TR) |
| 輸入數目和類型： | 1 個單端，單極 |
AD7680
Rev. A | Page 18 of 24
It is also possible to take valid data on each SCLK rising edge
rather than falling edge, since the SCLK cycle time is long
enough to ensure the data is ready on the rising edge of SCLK.
However, the first leading zero is still driven by the CS falling
edge, and so it can be taken on only the first SCLK falling edge.
It may be ignored and the first rising edge of SCLK after the CS
falling edge would have the second leading zero provided and
the 23rd rising SCLK edge would have the final trailing zero
provided. This method may not work with most
microcontrollers/DSPs but could possibly be used with FPGAs
and ASICs.
AD7680 TO ADSP-218x
The ADSP-218x family of DSPs can be interfaced directly to the
AD7680 without any glue logic required. The SPORT control
register should be set up as follows:
TFSW = RFSW = 1, Alternate Framing
INVRFS = INVTFS = 1, Active Low Frame Signal
DTYPE = 00, Right Justify Data
SLEN = 0111, 8-Bit Data-Words
ISCLK = 1, Internal Serial Clock
TFSR = RFSR = 0, Frame First Word
IRFS = 0
ITFS = 1
To implement the power-down mode, SLEN should be set to
0111 to issue an 8-bit SCLK burst. The connection diagram is
shown in Figure 22. The ADSP-218x has the TFS and RFS of the
SPORT tied together, with TFS set as an output and RFS set as
an input. The DSP operates in alternate framing mode and the
SPORT control register is set up as described. Transmit and
receive autobuffering is used in order to get a 24 SCLK transfer.
Each buffer contains three 8-bit words. The frame synchroniza-
tion signal generated on the TFS is tied to CS, and as with all
signal processing applications, equidistant sampling is necessary.
In this example, the timer interrupt is used to control the
sampling rate of the ADC.
03643-0-015
SCLK
AD7680*
SDATA
CS
ADSP-218x*
SCLK
*ADDITIONAL PINS OMITTED FOR CLARITY
DR
RFS
TFS
Figure 22. Interfacing to the ADSP-218x
The timer register is loaded with a value that provides an
interrupt at the required sample interval. When an interrupt is
received, the values in the transmit autobuffer start to be
transmitted and TFS is generated. The TFS is used to control
the RFS and therefore the reading of data. The data is stored in
the receive autobuffer for processing or to be shifted later. The
frequency of the serial clock is set in the SCLKDIV register.
When the instruction to transmit with TFS is given, i.e.,
TX0 = AX0, the state of the SCLK is checked. The DSP waits
until the SCLK has gone high, low, and high again before
transmission starts. If the timer and SCLK values are chosen
such that the instruction to transmit occurs on or near the
rising edge of SCLK, the data may be transmitted or it may wait
until the next clock edge.
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| AD7680BRM-REEL | IC ADC 16BIT LP UNIPOLR 8MSOP TR |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7680BRMZ | 功能描述:IC ADC 16BIT LP UNIPOLAR 8-MSOP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:PulSAR® 標準包裝:1 系列:microPOWER™ 位數:8 采樣率（每秒）:1M 數據接口:串行，SPI? 轉換器數目:1 功率耗散（最大）:- 電壓電源:模擬和數字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應商設備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數目和類型:8 個單端，單極 產品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6 |
| AD7680BRMZ | 制造商:Analog Devices 功能描述:IC 16BIT ADC SMD 7680 MSOP8 |
| AD7680BRMZ-REEL | 功能描述:IC ADC 16BIT LP UNIPOLR 8MSOP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:PulSAR® 標準包裝:1,000 系列:- 位數:16 采樣率（每秒）:45k 數據接口:串行 轉換器數目:2 功率耗散（最大）:315mW 電壓電源:模擬和數字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數目和類型:2 個單端，單極 |
| AD7680BRMZ-REEL7 | 功能描述:IC ADC 16BIT LP UNIPOLR 8MSOP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:PulSAR® 標準包裝:1,000 系列:- 位數:16 采樣率（每秒）:45k 數據接口:串行 轉換器數目:2 功率耗散（最大）:315mW 電壓電源:模擬和數字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數目和類型:2 個單端，單極 |
| AD7682 | 制造商:AD 制造商全稱:Analog Devices 功能描述:14-Bit, 8-Channel, 250 kSPS PulSAR ADC |
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