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參數資料
| 型號： | ADA4938-1ACPZ-R2 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | Ultra-Low Distortion Differential ADC Driver |
| 中文描述： | LINE DRIVER, QCC16 |
| 封裝： | 3 X 3 MM, ROHS COMPLIANT, MO-220VEED-2, LFCSP-16 |
| 文件頁數： | 13/14頁 |
| 文件大小： | 307K |
| 代理商： | ADA4938-1ACPZ-R2 |
Preliminary Technical Data
ADA4938-1
LAYOUT, GROUNDING, AND BYPASSING
As a high speed device, the ADA4938-1 is sensitive to the
PCB environment in which it operates. Realizing its superior
performance requires attention to the details of high speed
PCB design.
The first requirement is a solid ground plane that covers as
much of the board area around the ADA4938-1 as possible.
However, the area near the feedback resistors (R
F
), gain resistors
(R
G
), and the input summing nodes (Pin 2 and Pin 3) should be
cleared of all ground and power planes (see Figure 8). This
minimizes any stray capacitance at these nodes and prevents
peaking of the response of the amplifier at high frequencies.
Rev. PrD | Page 13 of 14
0
Figure 8. Ground and Power Plane Voiding in Vicinity of R
F
and R
G
The power supply pins should be bypassed as close to the device
as possible and directly to a nearby ground plane. High frequency
ceramic chip capacitors should be used. It is recommended that
two parallel bypass capacitors (1000 pF and 0.1 μF) be used for
each supply. The 1000 pF capacitor should be placed closer to
the device. Further away, low frequency bypassing should be
provided, using 10 μF tantalum capacitors from each supply
to ground.
Signal routing should be short and direct to avoid parasitic
effects. Wherever complementary signals exist, a symmetrical
layout should be provided to maximize balanced performance.
When routing differential signals over a long distance, PCB
traces should be close together, and any differential wiring
should be twisted such that loop area is minimized. This
reduces radiated energy and makes the circuit less susceptible
to interference.
相關PDF資料 |
PDF描述 |
|---|---|
| ADA4938-1ACPZ-R7 | Ultra-Low Distortion Differential ADC Driver |
| ADA4938-1ACPZ-RL | Ultra-Low Distortion Differential ADC Driver |
| ADA4938-1 | Ultra-Low Distortion Differential ADC Driver |
| ADA4938-1_06 | Ultra-Low Distortion Differential ADC Driver |
| ADA4938-1YCPZ-R2 | Ultra-Low Distortion Differential ADC Driver |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ADA4938-1ACPZ-R2 | 制造商:Analog Devices 功能描述:IC DIFF AMP 1GHZ 4700V/S LFCSP-16 |
| ADA4938-1ACPZ-R7 | 功能描述:IC AMP DIFF ADC DR 16BIT 16LFCSP RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 專用 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:60 系列:- 類型:可變增益放大器 應用:CATV 安裝類型:表面貼裝 封裝/外殼:20-WQFN 裸露焊盤 供應商設備封裝:20-TQFN-EP（5x5） 包裝:托盤 |
| ADA4938-1ACPZ-RL | 功能描述:IC ADC DRIVER DIFF 16-LFCSP RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 專用 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:60 系列:- 類型:可變增益放大器 應用:CATV 安裝類型:表面貼裝 封裝/外殼:20-WQFN 裸露焊盤 供應商設備封裝:20-TQFN-EP（5x5） 包裝:托盤 |
| ADA4938-1YCP-EBZ | 功能描述:BOARD EVAL FOR ADA4938-1YCP RoHS:是 類別:編程器，開發系統 >> 評估板 - 運算放大器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- |
| ADA4938-1YCPZ-R2 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Ultra-Low Distortion Differential ADC Driver |
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