- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄2063 > ADA4938-2ACPZ-RL (Analog Devices Inc)IC ADC DRIVER DUAL DIFF 24LFCSP PDF資料下載
參數(shù)資料
| 型號： | ADA4938-2ACPZ-RL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 16/28頁 |
| 文件大小： | 0K |
| 描述： | IC ADC DRIVER DUAL DIFF 24LFCSP |
| 標(biāo)準(zhǔn)包裝： | 5,000 |
| 類型： | ADC 驅(qū)動器 |
| 應(yīng)用： | 數(shù)據(jù)采集 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-VFQFN 裸露焊盤，CSP |
| 供應(yīng)商設(shè)備封裝： | 24-LFCSP-VQ（4x4） |
| 包裝： | 帶卷 (TR) |
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頁當(dāng)前第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頁第28頁
ADA4938-1/ADA4938-2
Rev. A | Page 23 of 28
LAYOUT, GROUNDING, AND BYPASSING
As a high speed device, the ADA4938-x 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-x as possible. However, the
area near the feedback resistors (RF), input gain resistors (RG),
and the input summing nodes should be cleared of all ground
and power planes (see Figure 66). Clearing the ground and
power planes minimizes any stray capacitance at these nodes
and prevents peaking of the response of the amplifier at high
frequencies.
The thermal resistance, θJA, is specified for the device, including
the exposed pad, soldered to a high thermal conductivity 4-layer
circuit board, as described in EIA/JESD 51-7. The exposed pad
is electrically isolated from the device; therefore, it can be con-
nected to a ground plane using vias. Examples of the thermal
attach pad and via structure for the ADA4938-1 are shown in
06
59
2-
00
8
Figure 66. Ground and Power Plane Voiding in Vicinity of RF and RG
Bypass the power supply pins as close to the device as possible
and directly to a nearby ground plane. Use high frequency ceramic
chip capacitors. It is recommended that two parallel bypass capa-
citors (1000 pF and 0.1 μF) be used for each supply with the
1000 pF capacitor placed closer to the device; if further away,
provide low frequency bypassing 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, provide a
symmetrical layout to maximize balanced performance.
When routing differential signals over a long distance, keep
PCB traces close together and twist any differential wiring to
minimize loop area. Doing this reduces radiated energy and
makes the circuit less susceptible to interference.
06
59
2-
0
60
1.30
0.80
1.30
Figure 67. Recommended PCB Thermal Attach Pad (ADA4938-1)
(Dimensions in mm)
06
59
2-
06
1
0.30
PLATED
VIA HOLE
1.30
GROUND PLANE
POWER PLANE
BOTTOM METAL
TOP METAL
Figure 68. Cross-Section of a 4-Layer PCB (ADA4938-1) Showing a Thermal Via Connection to the Buried Ground Plane (Dimensions in mm)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADA4941-1YRZ-R7 | IC DIFF ADC DRIVER 18BIT 8SOIC |
| ADA4960-1ACPZ-R2 | IC ADC DRIVER DIFF 16LFCSP |
| ADATE205BSVZ | IC DCL DUAL 250MHZ ATE 100TQFP |
| ADATE206BSVZ | IC DCL DUAL 500MHZ ATE 100TQFP |
| ADAU1401AWBSTZ-RL | IC AUDIO PROC 28/56BIT 48LQFP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADA4938-2YCP-EBZ | 功能描述:BOARD EVAL FOR ADA4938-2YCP RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 運(yùn)算放大器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- |
| ADA4939-1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Ultralow Distortion Differential ADC Driver |
| ADA4939-1YCP-EBZ | 功能描述:BOARD EVAL FOR ADA4939-1YCP RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 運(yùn)算放大器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- |
| ADA4939-1YCPZ-R2 | 制造商:Analog Devices 功能描述:SP Amp Differential ADC Driver Single 5.25V 16-Pin LFCSP EP T/R 制造商:Analog Devices 功能描述:SP AMP DIFFERENTIAL ADC DRVR SGL 5.25V 16LFCSP EP - Tape and Reel 制造商:Analog Devices 功能描述:SP Amp Differential ADC Driver Single 5.25V 16-Pin LFCSP EP Tape & Reel |
| ADA4939-1YCPZ-R7 | 功能描述:IC AMP DIFF ULDIST LN 16LFCSP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 放大器類型:J-FET 電路數(shù):2 輸出類型:- 轉(zhuǎn)換速率:13 V/µs 增益帶寬積:3MHz -3db帶寬:- 電流 - 輸入偏壓:65pA 電壓 - 輸入偏移:3000µV 電流 - 電源:1.4mA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):7 V ~ 36 V，±3.5 V ~ 18 V 工作溫度:-40°C ~ 85°C 安裝類型:通孔 封裝/外殼:8-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:8-PDIP 包裝:管件 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。