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| 型号： | EVAL-AD7661CBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 19/28页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR AD7661 |
| 标准包装： | 1 |
| 系列： | PulSAR® |
| ADC 的数量： | 1 |
| 位数： | 16 |
| 采样率（每秒）： | 100k |
| 数据接口： | 串行，并联 |
| 输入范围： | ±VREF |
| 在以下条件下的电源（标准）： | 16mW @ 100kSPS |
| 工作温度： | -40°C ~ 85°C |
| 已用 IC / 零件： | AD7661 |
| 已供物品： | 板，CD |
| 相关产品： | AD7661ACPZRL-ND - IC ADC 16BIT W/REF 48-LFCSP AD7661ASTZ-ND - IC ADC 16BIT W/REF 48-LQFP AD7661ACPZ-ND - IC ADC 16BIT W/REF 48LFCSP AD7661ASTZRL-ND - IC ADC 16BIT W/REF 48LQFP |
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AD7661
Rev. 0 | Page 26 of 28
MICROPROCESSOR INTERFACING
The AD7661 is ideally suited for traditional dc measurement
applications supporting a microprocessor, and for ac signal
processing applications interfacing to a digital signal processor.
The AD7661 is designed to interface either with a parallel 8-bit
or 16-bit wide interface, or with a general-purpose serial port or
I/O ports on a microcontroller. A variety of external buffers can
be used with the AD7661 to prevent digital noise from coupling
into the ADC. The following section discusses the use of an
AD7661 with an ADSP-219x SPI equipped DSP.
SPI Interface (ADSP-219x)
Figure 44 shows an interface diagram between the AD7661 and
the SPI equipped ADSP-219x. To accommodate the slower
speed of the DSP, the AD7661 acts as a slave device and data
must be read after conversion. This mode also allows the daisy-
chain feature. The convert command can be initiated in
response to an internal timer interrupt. 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 serial inter-
face (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 s. When a
higher sampling rate is desired, use of one of the parallel
interface modes is recommended.
AD7661*
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)
03033-0-037
Figure 44. Interfacing the AD7661 to an SPI Interface
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| EVAL-AD7661EDZ | 功能描述:BOARD EVAL FOR AD7661 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-AD7662CB | 制造商:AD 制造商全称:Analog Devices 功能描述:Evaluation Board AD766X/AD767X |
| EVAL-AD7663CB | 制造商:Analog Devices 功能描述: |
| EVAL-AD7663CBZ | 功能描述:BOARD EVALUATION FOR AD7663 RoHS:是 类别:编程器，开发系统 >> 评估板 - 模数转换器 (ADC) 系列:PulSAR® 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-AD7663EDZ | 制造商:Analog Devices 功能描述:CONVERTER - ADC |
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