参数资料
型号: EVAL-AD7655CBZ
厂商: Analog Devices Inc
文件页数: 17/28页
文件大小: 0K
描述: BOARD EVALUATION FOR AD7655
标准包装: 1
系列: PulSAR®
ADC 的数量: 1
位数: 16
采样率(每秒): 1M
数据接口: 串行,并联
输入范围: 0 ~ 2 V
在以下条件下的电源(标准): 120mW @ 1MSPS
工作温度: -40°C ~ 85°C
已用 IC / 零件: AD7655
已供物品: 板,CD
相关产品: AD7655ACPZRL-ND - IC ADC 16BIT 4CHAN 48LFCSP
AD7655ASTZRL-ND - IC ADC 16BIT 4CHAN 48LQFP
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
相关PDF资料
PDF描述
STD17W-M WIRE & CABLE MARKERS
HK06036N8J-T INDUCTOR HI FREQ 6.8NH 5% 0201
LGU2C271MELY CAP ALUM 270UF 160V 20% SNAP
EVAL-AD7641CBZ BOARD EVALUATION FOR AD7641
DC1571A-B BOARD SAR ADC LTC2382-16
相关代理商/技术参数
参数描述
EVAL-AD7655EDZ 功能描述:BOARD EVAL FOR AD7655 RoHS:是 类别:编程器,开发系统 >> 评估板 - 模数转换器 (ADC) 系列:* 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- ADC 的数量:1 位数:12 采样率(每秒):94.4k 数据接口:USB 输入范围:±VREF/2 在以下条件下的电源(标准):- 工作温度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板,软件
EVAL-AD7656-1CBZ 功能描述:BOARD EVAL FOR AD7656-1 RoHS:是 类别:编程器,开发系统 >> 评估板 - 模数转换器 (ADC) 系列:iCMOS® 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- ADC 的数量:1 位数:12 采样率(每秒):94.4k 数据接口:USB 输入范围:±VREF/2 在以下条件下的电源(标准):- 工作温度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板,软件
EVAL-AD7656-1EDZ 功能描述:BOARD EVAL CONTROL AD7656-1 RoHS:是 类别:编程器,开发系统 >> 评估板 - 模数转换器 (ADC) 系列:iCMOS® 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- ADC 的数量:1 位数:12 采样率(每秒):94.4k 数据接口:USB 输入范围:±VREF/2 在以下条件下的电源(标准):- 工作温度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板,软件
EVAL-AD7656-1SDZ 功能描述:数据转换 IC 开发工具 Evaluation Control Board RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V
EVAL-AD7656CB 制造商:Analog Devices 功能描述: