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参数资料
| 型号： | EVAL-AD7674CBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 14/28页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR AD7674 |
| 产品培训模块： | ADC Applications ADC Architectures ADC DC/AC Performance |
| 标准包装： | 1 |
| 系列： | PulSAR® |
| ADC 的数量： | 1 |
| 位数： | 18 |
| 采样率（每秒）： | 800k |
| 数据接口： | 串行，并联 |
| 输入范围： | 0 ~ 5 V |
| 在以下条件下的电源（标准）： | 126mW @ 800kSPS |
| 工作温度： | -40°C ~ 85°C |
| 已用 IC / 零件： | AD7674 |
| 已供物品： | 板 |
| 相关产品： | AD7674ACPZ-ND - IC ADC 18BIT SAR 5V 48LFCSP AD7674ACPZRL-ND - IC ADC 18BIT SAR 5V 48LFCSP AD7674ASTZ-ND - IC ADC 18BIT 800KSPS 48-LQFP AD7674ASTZRL-ND - IC ADC 18BIT 800KSPS 48-LQFP T/R |
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AD7674
Rev. A | Page 21 of 28
t9
RESET
DATA
BUS
BUSY
CNVST
t8
03083-0-035
Figure 35. RESET Timing
CNVST
BUSY
DATA
BUS
CS = RD = 0
PREVIOUS CONVERSION DATA
NEW DATA
t1
t10
t4
t3
t11
03083-0-036
Figure 36. Master Parallel Data Timing for Reading (Continuous Read)
PARALLEL INTERFACE
The AD7674 is configured to use the parallel interface with an
18-bit, a 16-bit, or an 8-bit bus width, according to Table 7. The
data can be read either after each conversion, which is during
the next acquisition phase, or during the following conversion,
as shown in Figure 37 and Figure 38, respectively. When the
data is read during the conversion, however, it is recommended
that it is read only during the first half of the conversion phase.
This avoids any potential feedthrough between voltage
transients on the digital interface and the most critical analog
conversion circuitry. Refer to Table 7 for a detailed description
of the different options available.
DATA
BUS
t12
t13
BUSY
CS
RD
CURRENT
CONVERSION
03083-0-037
Figure 37. Slave Parallel Data Timing for Reading (Read after Convert)
CS = 0
CNVST,
RD
t1
PREVIOUS
CONVERSION
DATA
BUS
t12
t13
BUSY
t4
t3
03083-0-038
Figure 38. Slave Parallel Data Timing for Reading (Read during Convert)
CS
RD
A0, A1
PINS D[15:8]
PINS D[7:0]
HI-Z
HIGH BYTE
LOW BYTE
HIGH BYTE
HI-Z
t12
t13
03083-0-039
Figure 39. 8-Bit and 16-Bit Parallel Interface
SERIAL INTERFACE
The AD7674 is configured to use the serial interface when
MODE0 and MODE1 are held high. The AD7674 outputs 18
bits of data, MSB first, on the SDOUT pin. This data is
synchronized with the 18 clock pulses provided on the SCLK
pin. The output data is valid on both the rising and falling edge
of the data clock.
MASTER SERIAL INTERFACE
Internal Clock
The AD7674 is configured to generate and provide the serial
data clock SCLK when the EXT/INT pin is held low. The
AD7674 also generates a SYNC signal to indicate to the host
when the serial data is valid. The serial clock SCLK and the
SYNC signal can be inverted if desired. Depending on the
RDC/SDIN input, the data can be read after each conversion or
during the following conversion. Figure 40 and Figure 41 show
the detailed timing diagrams of these two modes.
Usually, because the AD7674 is used with a fast throughput, the
Master Read during Conversion mode is the most
recommended serial mode.
In Read during Conversion mode, the serial clock and data
toggle at appropriate instants, minimizing potential
feedthrough between digital activity and critical conversion
decisions.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| EVAL-AD7674EDZ | 功能描述:BOARD EVAL FOR AD7674 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-AD7675CB | 制造商:AD 制造商全称:Analog Devices 功能描述:Evaluation Board AD766X/AD767X |
| EVAL-AD7675CBZ | 功能描述:BOARD EVALUATION FOR AD7675 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-AD7676CB | 制造商:AD 制造商全称:Analog Devices 功能描述:Evaluation Board AD766X/AD767X |
| EVAL-AD7676CBZ | 功能描述:BOARD EVALUATION FOR AD7676 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 |
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