參數(shù)資料
型號(hào)： EVAL-AD7655CBZ
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 17/28頁(yè)
文件大?。?/td> 0K
描述： BOARD EVALUATION FOR AD7655
標(biāo)準(zhǔn)包裝： 1
系列： PulSAR®
ADC 的數(shù)量： 1
位數(shù)： 16
采樣率（每秒）： 1M
數(shù)據(jù)接口： 串行，并聯(lián)
輸入范圍： 0 ~ 2 V
在以下條件下的電源（標(biāo)準(zhǔn)）： 120mW @ 1MSPS
工作溫度： -40°C ~ 85°C
已用 IC / 零件： AD7655
已供物品： 板，CD
相關(guān)產(chǎn)品： AD7655ACPZRL-ND - IC ADC 16BIT 4CHAN 48LFCSP
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AD7655ACPZ-ND - IC ADC 16BIT 4CH 48-LFCSP
AD7655ASTZ-ND - IC ADC 16BIT 1MSPS QUAD 48-LQFP
AD7655
Rev. B | Page 24 of 28
MICROPROCESSOR INTERFACING
The AD7655 is ideally suited for traditional dc measurement
applications supporting a microprocessor and for ac signal
processing applications interfacing to a digital signal processor.
The AD7655 is designed to interface with either a parallel
8-bit-wide or 16-bit-wide interface, a general-purpose serial port,
or I/O ports on a microcontroller. A variety of external buffers
can be used with the AD7655 to prevent digital noise from
coupling into the ADC. The following section describes the use of
the AD7655 with an SPI-equipped DSP, the ADSP-219x.
SPI INTERFACE (ADSP-219X)
Figure 33 shows an interface diagram between the AD7655 and
the SPI1-equipped ADSP-219x. To accommodate the slower
speed of the DSP, the AD7655 acts as a slave device and data
must be read after conversion. This mode also allows the daisy-
chain feature to be used. The convert command can be initiated
in response to an internal timer interrupt. The 32-bit output
data is read with two serial peripheral interface (SPI) 16-bit
wide accesses. The reading process can be initiated in response
to the end of conversion signal (BUSY going low) using an
interrupt line of the DSP. The SPI on the ADSP-219x is
configured for master mode—(MSTR) = 1, Clock Polarity bit
(CPOL) = 0, Clock Phase bit (CPHA) = 1, and SPI Interrupt
Enable (TIMOD) = 00—by writing to the SPI control register
(SPICLTx). To meet all timing requirements, the SPI clock
should be limited to 17 Mbps, which allows it to read an ADC
result in less than 1 μs. When a higher sampling rate is desired,
use of one of the parallel interface modes is recommended.
AD7655*
ADSP-219x*
SER/PAR
PFx
MISOx
SCKx
PFx or TFSx
BUSY
SDOUT
SCLK
CNVST
EXT/INT
CS
RD
INVSCLK
DVDD
*ADDITIONAL PINS OMITTED FOR CLARITY
SPIxSEL (PFx)
03536-033
Figure 33. Interfacing the AD7655 to SPI Interface
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EVAL-AD7656-1CBZ 功能描述:BOARD EVAL FOR AD7656-1 RoHS:是 類別:編程器，開(kāi)發(fā)系統(tǒng) >> 評(píng)估板 - 模數(shù)轉(zhuǎn)換器 (ADC) 系列:iCMOS® 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- ADC 的數(shù)量:1 位數(shù):12 采樣率（每秒）:94.4k 數(shù)據(jù)接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標(biāo)準(zhǔn)）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件
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EVAL-AD7656CB 制造商:Analog Devices 功能描述:
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