- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄6046 > AD8368ACPZ-REEL7 (Analog Devices Inc)IC AMP VGA 24LFCSP PDF資料下載
參數(shù)資料
| 型號(hào)： | AD8368ACPZ-REEL7 |
| 廠商： | Analog Devices Inc |
| 文件頁(yè)數(shù)： | 8/20頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP VGA 24LFCSP |
| 設(shè)計(jì)資源： | Extending the Dynamic Range of ADL5513 Logarithmic Detector Using AD8368 (CN0072) |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | X-AMP® |
| 放大器類型： | 可變?cè)鲆?br> |
| 電路數(shù)： | 1 |
| -3db帶寬： | 800MHz |
| 電流 - 電源： | 60mA |
| 電壓 - 電源，單路/雙路(±)： | 4.5 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 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： | 標(biāo)準(zhǔn)包裝 |
| 產(chǎn)品目錄頁(yè)面： | 775 (CN2011-ZH PDF) |
| 其它名稱： | AD8368ACPZ-REEL7DKR |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)當(dāng)前第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)
AD8368
Rev. B | Page 16 of 20
The choice of CDETO is a compromise of averaging time constant,
response time, and carrier leakage. If CDETO is selected to be too
small to speed up the response time, the AGC loop could start
tracking and leveling any amplitude envelope and corrupt the
constellation. Figure 38 illustrates a 16 QAM, 100 ksymbols per
second constellation with a degraded error vector magnitude
(EVM) of 5%. By increasing CDETO to 0.01 μF, the EVM is
improved to 1.1%.
STABILITY AND LAYOUT CONSIDERATIONS
In some applications, the printed circuit board (PCB) parasitic, in
combination with the source impedance presented by the driving
stage, can present some troublesome impedance at high frequency
and can potentially unstablize the amplifier under certain extreme
conditions, such as high gain and high temperature. To avoid such
scenarios, it is recommended to include a simple parallel RL
snubbing network directly at the input terminal of the AD8368.
Figure 40 depicts an example of this network. The RL network
formed by R3 and L1 is used to minimize the negative impact
due to reflective source conditions at high RF frequencies and
ensures the amplifier operates unconditionally stable and
maintains the typical device performance.
REF –4.9dBm
CF 100MHz
SR 10kHz
CONST DIAG
MEAS SIGNAL
16 QAM
1U
–1U
–1.31289U
262.578mU/
1.31289U
05
90
7-
0
40
On the underside of the chip scale package, there is an exposed
compressed paddle. This paddle is internally connected to the
ground of the chip. Solder the paddle to the low impedance ground
plane on the PCB to ensure specified electrical performance and to
provide thermal relief. It is also recommended that the ground
planes on all layers under the paddle be stitched together with
vias to reduce thermal impedance.
Figure 38. Degraded Error Vector Magnitude Performance for 16 QAM at
100 ksymbols per second (CDETO Too Small)
Figure 39 illustrates the measured EVM performance for a 16 QAM
modulation at 10 Msymbols per second using CDETO = 1 nF.
10
0
1
2
3
4
5
6
7
8
9
–40
–30
–20
–10
0
10
20
EV
M
(
%
)
POWER IN (dBm)
05
90
7-
0
41
Figure 39. Error Vector Magnitude Performance for
16 QAM 10 Msymbols per second
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PBC14SACN | CONN HEADER .100 SINGL STR 14POS |
| PBC14SABN | CONN HEADER .100 SINGL STR 14POS |
| PEC15SFBN | CONN HEADER .100 SINGL STR 15POS |
| PEC12SAEN | CONN HEADER .100 SINGL STR 12POS |
| PEC19SABN | CONN HEADER .100 SINGL STR 19POS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD8368ACPZ-WP | 功能描述:IC AMP VGA 24LFCSP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:X-AMP® 標(biāo)準(zhǔn)包裝:2,500 系列:- 放大器類型:通用 電路數(shù):1 輸出類型:滿擺幅 轉(zhuǎn)換速率:0.11 V/µs 增益帶寬積:350kHz -3db帶寬:- 電流 - 輸入偏壓:4nA 電壓 - 輸入偏移:20µV 電流 - 電源:260µA 電流 - 輸出 / 通道:20mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 36 V，±1.35 V ~ 18 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SO 包裝:帶卷 (TR) |
| AD8368-EVALZ | 制造商:Analog Devices 功能描述:EVAL BD 800 MHZ, LINEAR-IN-DB VGA W/ AGC DETECTOR - Bulk 制造商:Analog Devices 功能描述:EVALUATION BOARD KIT |
| AD8369 | 制造商:AD 制造商全稱:Analog Devices 功能描述:45 dB Digitally Controlled VGA LF to 600 MHz |
| AD8369ARM | 制造商:Analog Devices 功能描述:500 MHZ DIGITAL VGA - Bulk |
| AD8369ARU | 制造商:Analog Devices 功能描述:SP Amp Variable Gain Amp Single 5.5V 16-Pin TSSOP Tube 制造商:Rochester Electronics LLC 功能描述:TSSOP IF DIGITAL CONTROL VGA - Bulk 制造商:Analog Devices 功能描述:IC SEMICONDUCTOR ((NS)) |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。