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參數(shù)資料
| 型號： | SPT7725BIQ |
| 廠商： | SIGNAL PROCESSING TECHNOLOGIES |
| 元件分類： | ADC |
| 英文描述： | 8-BIT, 300 MSPS, FLASH A/D CONVERTER |
| 中文描述： | 1-CH 8-BIT FLASH METHOD ADC, PARALLEL ACCESS, CQFP44 |
| 封裝： | CERQUAD-44 |
| 文件頁數(shù)： | 6/12頁 |
| 文件大?。?/td> | 134K |
| 代理商： | SPT7725BIQ |
6
8/17/01
SPT7725
double-sided PC board with a ground plane on the compo-
nent side separated into digital and analog sections will
give the best performance. The converter is bonded-out to
place the digital pins on the left side of the package and
the analog pins on the right side. Additionally, an RF bead
connection through a single point from the analog to digi-
tal ground planes will reduce ground noise pickup.
The circuit in figure 2 (PGA and cerquad packages only) is
intended to show the most elaborate method of achieving
the least error by correcting for integral nonlinearity, input
induced distortion, and power supply/ground noise. This is
achieved by the use of external reference ladder tap con-
nections, an input buffer, and supply decoupling. The func-
tion of each pin and external connections to other compo-
nents is as follows:
Figure 2 – Typical Interface Circuit 2 (PGA and Cerquad packages only)
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V
EE
, AGND, DGND
V
EE
is the supply pin with AGND as ground for the device.
The power supply pins should be bypassed as close to the
device as possible with at least a .01 μF ceramic capaci-
tor. A 1 μF tantalum should also be used for low frequency
suppression. DGND is the ground for the ECL outputs and
is to be referenced to the output pulldown voltage and
appropriately bypassed as shown in figure 1.
V
IN
(ANALOG INPUT)
There are two analog input pins that are tied to the same
point internally. Either one may be used as an analog input
senseand the other for input force This is convenient for
testing the source signal to see if there is sufficient drive
capability. The pins can also be tied together and driven by
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| SPT7725 | 8-BIT, 300 MSPS, FLASH A/D CONVERTER |
| SPT7725AIG | 8-BIT, 300 MSPS, FLASH A/D CONVERTER |
| SPT7725AIJ | 8-BIT, 300 MSPS, FLASH A/D CONVERTER |
| SPT7725AIQ | 8-BIT, 300 MSPS, FLASH A/D CONVERTER |
| SPT7725BCU | 8-BIT, 300 MSPS, FLASH A/D CONVERTER |
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|---|---|
| SPT7730 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:8-BIT, 3.0 MSPS, SERIAL OUTPUT A/D CONVERTER |
| SPT7730SCS | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:8-BIT, 3.0 MSPS, SERIAL OUTPUT A/D CONVERTER |
| SPT7730SCU | 制造商:CADEKA 制造商全稱:CADEKA 功能描述:8-BIT, 3.0 MSPS, SERIAL OUTPUT A/D CONVERTER |
| SPT7734 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:8-BIT, 40 MSPS,175 mW A/D CONVERTER |
| SPT7734SCS | 功能描述:視頻模擬/數(shù)字化轉(zhuǎn)換器集成電路 8BIT 40 MSPS SaR aDC RoHS:否 制造商:Texas Instruments 輸入信號類型:Differential 轉(zhuǎn)換器數(shù)量:1 ADC 輸入端數(shù)量:4 轉(zhuǎn)換速率:3 Gbps 分辨率:8 bit 結(jié)構(gòu): 輸入電壓:3.3 V 接口類型:SPI 信噪比: 電壓參考: 電源電壓-最大:3.45 V 電源電壓-最小:3.15 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TCSP-48 封裝:Reel |
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