- 您现在的位置：买卖IC网 > PDF目录10527 > AD9634BCPZ-170 (Analog Devices Inc)IC ADC 12BIT 170MSPS 32-LFCSP PDF资料下载
参数资料
| 型号： | AD9634BCPZ-170 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 17/32页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT 170MSPS 32-LFCSP |
| 标准包装： | 1 |
| 位数： | 12 |
| 采样率（每秒）： | 170M |
| 数据接口： | 串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 340mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 32-LFCSP-WQ（5x5） |
| 包装： | 托盘 |
| 输入数目和类型： | 2 单端，1 个差分 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页当前第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页
AD9634
Rev. 0 | Page 24 of 32
SERIAL PORT INTERFACE (SPI)
The AD9634 serial port interface (SPI) allows the user to configure
the converter for specific functions or operations through a
structured register space provided inside the ADC. The SPI offers
added flexibility and customization, depending on the application.
Addresses are accessed via the serial port and can be written to
or read from via the port. Memory is organized into bytes that can
be further divided into fields. These fields are documented in the
Memory Map section. For detailed operational information, see
the AN-877 Application Note, Interfacing to High Speed ADCs
via SPI.
CONFIGURATION USING THE SPI
Three pins define the SPI of this ADC: the SCLK pin, the SDIO
pin, and the CSB pin (see Table 11). The SCLK (serial clock) pin
is used to synchronize the read and write data presented from
and to the ADC. The SDIO (serial data input/output) pin is a
dual-purpose pin that allows data to be sent and read from the
internal ADC memory map registers. The CSB (chip select bar)
pin is an active-low control that enables or disables the read and
write cycles.
Table 11. Serial Port Interface Pins
Pin
Function
SCLK
Serial clock. The serial shift clock input, which is used to
synchronize serial interface reads and writes.
SDIO
Serial data input/output. A dual-purpose pin that
typically serves as an input or an output, depending on
the instruction being sent and the relative position in the
timing frame.
CSB
Chip select bar. An active-low control that gates the read
and write cycles.
The falling edge of CSB, in conjunction with the rising edge of
SCLK, determines the start of the framing. An example of the serial
Other modes involving the CSB are available. The CSB can be
held low indefinitely, which permanently enables the device;
this is called streaming. The CSB can stall high between bytes to
allow for additional external timing. When CSB is tied high, SPI
functions are placed in a high impedance mode. This mode turns
on any SPI pin secondary functions.
During an instruction phase, a 16-bit instruction is transmitted.
Data follows the instruction phase, and its length is determined
by the W0 and W1 bits.
All data is composed of 8-bit words. The first bit of each individual
byte of serial data indicates whether a read or write command is
issued. This allows the serial data input/output (SDIO) pin to
change direction from an input to an output.
In addition to word length, the instruction phase determines
whether the serial frame is a read or write operation, allowing
the serial port to be used both to program the chip and to read
the contents of the on-chip memory. If the instruction is a readback
operation, performing a readback causes the serial data input/
output (SDIO) pin to change direction from an input to an output
at the appropriate point in the serial frame.
Data can be sent in MSB-first mode or in LSB-first mode. MSB-
first mode is the default on power-up and can be changed via
the SPI port configuration register. For more information about
this and other features, see the AN-877 Application Note,
Interfacing to High Speed ADCs via SPI.
HARDWARE INTERFACE
The pins described in Table 11 comprise the physical interface
between the user programming device and the serial port of the
AD9634. The SCLK pin and the CSB pin function as inputs when
using the SPI interface. The SDIO pin is bidirectional, functioning
as an input during write phases and as an output during readback.
The SPI interface is flexible enough to be controlled by either
FPGAs or microcontrollers. One method for SPI configuration
is described in detail in the AN-812 Application Note,
Microcontroller-Based Serial Port Interface (SPI) Boot Circuit.
The SPI port should not be active during periods when the full
dynamic performance of the converter is required. Because the
SCLK signal, the CSB signal, and the SDIO signal are typically
asynchronous to the ADC clock, noise from these signals can
degrade converter performance. If the on-board SPI bus is used for
other devices, it may be necessary to provide buffers between
this bus and the AD9634 to prevent these signals from transi-
tioning at the converter inputs during critical sampling periods.
相关PDF资料 |
PDF描述 |
|---|---|
| DS34LV87TM/NOPB | IC LINE DRIVER QUAD CMOS 16-SOIC |
| AD7711ANZ | IC ADC 24BIT RTD I SOURCE 24-DIP |
| AD9600ABCPZ-125 | IC ADC 10BIT 125MSPS 64LFCSP |
| ICL3237CAZ | IC 5DRVR/3RCVR RS232 3V 28-SSOP |
| AMIS42665TJAA1G | TRANSCEIVER CAN HS LP 8-SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD9634BCPZ-210 | 制造商:Analog Devices 功能描述:12 BIT 210 MSPS ADC - Trays 制造商:Analog Devices 功能描述:IC ADC 12BIT 210MSPS 32-LFCSP 制造商:Analog Devices 功能描述:ADC 12BIT 210MSPS 32LFCSP 制造商:Analog Devices 功能描述:IC ADC 12 bit 210 MSPS Ser 制造商:Analog Devices 功能描述:ADC, 12BIT, 210MSPS, 32LFCSP 制造商:Analog Devices 功能描述:12 Bit 210 Msps ADC 制造商:Analog Devices 功能描述:CONVERTER - ADC |
| AD9634BCPZ-250 | 制造商:Analog Devices 功能描述:12 BIT 250 MSPS ADC - Trays 制造商:Analog Devices 功能描述:IC ADC 12BIT 250MSPS 32-LFCSP 制造商:Analog Devices 功能描述:IC ADC 12 bit 250 MSPS Ser 制造商:Analog Devices 功能描述:ADC 12BIT 250MSPS 32LFCSP 制造商:Analog Devices 功能描述:ADC, 12BIT, 250MSPS, 32LFCSP 制造商:Analog Devices 功能描述:12 Bit 250 Msps ADC 制造商:Analog Devices 功能描述:CONVERTER - ADC |
| AD9634BCPZRL7-170 | 功能描述:IC ADC 12BIT SRL 170MSPS 32LFCSP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:- 位数:14 采样率（每秒）:83k 数据接口:串行，并联 转换器数目:1 功率耗散（最大）:95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP（0.600"，15.24mm） 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端，双极 |
| AD9634BCPZRL7-210 | 功能描述:模数转换器 - ADC 12 Bit 210 Msps ADC RoHS:否 制造商:Analog Devices 通道数量: 结构: 转换速率: 分辨率: 输入类型: 信噪比: 接口类型: 工作电源电压: 最大工作温度: 安装风格: 封装 / 箱体: |
| AD9634BCPZRL7-250 | 功能描述:模数转换器 - ADC 12 Bit 250 Msps ADC RoHS:否 制造商:Analog Devices 通道数量: 结构: 转换速率: 分辨率: 输入类型: 信噪比: 接口类型: 工作电源电压: 最大工作温度: 安装风格: 封装 / 箱体: |
发布紧急采购，3分钟左右您将得到回复。