- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄1988 > AD9648BCPZRL7-125 (Analog Devices Inc)IC ADC 14BIT 125MSPS 64LFCSP PDF資料下載
參數(shù)資料
| 型號： | AD9648BCPZRL7-125 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 28/44頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 14BIT 125MSPS 64LFCSP |
| 標(biāo)準(zhǔn)包裝： | 750 |
| 位數(shù)： | 14 |
| 采樣率（每秒）： | 125M |
| 數(shù)據(jù)接口： | LVDS，并聯(lián)，串行，SPI |
| 轉(zhuǎn)換器數(shù)目： | 2 |
| 電壓電源： | 模擬和數(shù)字 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 64-VFQFN 裸露焊盤，CSP |
| 供應(yīng)商設(shè)備封裝： | 64-LFCSP-VQ（9x9） |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 4 個單端，2 個差分 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁當(dāng)前第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁
AD9648
Rev. 0 | Page 34 of 44
HARDWARE INTERFACE
The pins described in Table 15 comprise the physical interface
between the user programming device and the serial port of the
AD9648. 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, Micro-
controller-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 AD9648 to prevent these signals from transi-
tioning at the converter inputs during critical sampling periods.
Some pins serve a dual function when the SPI interface is not
being used. When the pins are strapped to DRVDD or ground
during device power-on, they are associated with a specific
function. Table 16 describes the strappable functions supported
on the AD9648.
CONFIGURATION WITHOUT THE SPI
In applications that do not interface to the SPI control registers,
the SDIO/DCS pin, the SCLK/DFS pin, and the PDWN pin
serve as standalone CMOS-compatible control pins. When the
device is powered up, it is assumed that the user intends to use the
pins as static control lines for the duty cycle stabilizer, output
data format, and power-down feature control. In this mode, the
CSB chip select bar should be connected to AVDD, which
disables the serial port interface.
When the device is in SPI mode, the PDWN and OEB Pins (if
enabled) remain active. For SPI control of output enable and
power-down, the OEB and PDWN pins should be set to their
default states.
Table 16. Mode Selection
Pin
External Voltage
Configuration
SDIO/DCS
DRVDD (default)
Duty cycle stabilizer enabled
AGND
Duty cycle stabilizer disabled
SCLK/DFS
DRVDD
Twos complement enabled
AGND (default)
Offset binary enabled
OEB
DRVDD
Outputs in high impedance
AGND (default)
Outputs enabled
PDWN
DRVDD
Chip in power-down or
standby
AGND (default)
Normal operation
SPI ACCESSIBLE FEATURES
Table 17 provides a brief description of the general features that
are accessible via the SPI. These features are described in detail
in the AN-877 Application Note, Interfacing to High Speed ADCs
via SPI. The AD9648 part-specific features are described in detail
following Table 18, the external memory map register table.
Table 17. Features Accessible Using the SPI
Feature Name
Description
Mode
Allows the user to set either power-down mode
or standby mode
Clock
Allows the user to access the DCS, set the
clock divider, set the clock divider phase, and
enable the sync
Offset
Allows the user to digitally adjust the
converter offset
Test I/O
Allows the user to set test modes to have
known data on output bits
Output Mode
Allows the user to set the output mode
including LVDS
Output Phase
Allows the user to set the output clock polarity
Output Delay
Allows the user to vary the DCO delay
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD9649BCPZRL7-80 | IC ADC 14BIT 80MSPS 32LFCSP |
| AD9653BCPZRL7-125 | IC ADC 16BIT 125MSPS SRL 48LFCSP |
| AD9707BCPZRL7 | IC DAC TX 14BIT 175MSPS 32-LFCSP |
| AD9709ASTZRL | IC DAC 8BIT DUAL 125MSPS 48LQFP |
| AD9715BCPZ | IC DAC DUAL 10BIT LO PWR 40LFCSP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD9649 | 制造商:AD 制造商全稱:Analog Devices 功能描述:14-Bit, 20/40/65/80 MSPS, 1.8 V Analog-to-Digital Converter |
| AD9649-20EBZ | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 14 Bit 20 Msps ADC RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
| AD9649-20EBZ1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:14-Bit, 20/40/65/80 MSPS 1.8 V Analog-to-Digital Converter |
| AD9649-40EBZ | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 14 Bit 40 Msps ADC RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
| AD9649-40EBZ1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:14-Bit, 20/40/65/80 MSPS 1.8 V Analog-to-Digital Converter |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。