- 您现在的位置：买卖IC网 > PDF目录8562 > MAX9507ATE+ (Maxim Integrated Products)IC DIRECTDRIVE FILTER AMP 16TQFN PDF资料下载
参数资料
| 型号： | MAX9507ATE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 5/29页 |
| 文件大小： | 0K |
| 描述： | IC DIRECTDRIVE FILTER AMP 16TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 系列： | DirectDrive® |
| 应用： | 滤波器 |
| 电路数： | 1 |
| -3db带宽： | 40.7MHz |
| 转换速率： | 35 V/µs |
| 电流 - 电源： | 3.1mA |
| 电流 - 输出 / 通道： | 82mA |
| 电压 - 电源，单路/双路(±)： | 1.7 V ~ 2.63 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WFQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN-EP（3x3） |
| 包装： | 管件 |
| 配用： | MAX9507EVKIT+-ND - KIT EVAL FOR MAX9508 MAX9507EVCMAXQU+-ND - SYSTEM EVAL FOR MAX9507 KIT+MOD |
第1页第2页第3页第4页当前第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页
The series capacitor creates a highpass filter. Since the
lowest frequency in video is the frame rate, which can be
between 24Hz and 30Hz, the pole of the highpass filter
should ideally be an order of magnitude lower in fre-
quency than the frame rate. Therefore, the series capaci-
tor must be very large, typically from 220F to 3000F.
For space-constrained equipment, the series capacitor
is unacceptable. Changing from a single series capaci-
tor to a SAG network that requires two smaller capacitors
can only reduce space and cost slightly.
The series capacitor in the usual output connection
also prevents damage to the output amplifier if the con-
nector is shorted to a supply or to ground. While the
output connection of the MAX9507 does not have a
series capacitor, the MAX9507 will not be damaged if
the connector is shorted to a supply or to ground (see
the
Short-Circuit Protection section).
Video Amplifier
If the full-scale video signal from a video DAC is
250mV, the black level of the video signal created by
the video DAC is around 75mV. The MAX9507 shifts the
black level to near ground at the output so that the
active video is above ground and the sync is below
ground. The amplifier needs a negative supply for its
output stage to remain in its linear region when driving
sync below ground.
The MAX9507 has an integrated charge pump and lin-
ear regulator to create a low-noise negative supply
from the positive supply voltage. The charge pump
inverts the positive supply to create a raw negative volt-
age that is then fed into the linear regulator filtering out
the charge-pump noise.
Comparison Between DirectDrive Output
and AC-Coupled Output
The actual level of the video signal varies less with a
DirectDrive output than an AC-coupled output. The
average video signal level can change greatly depend-
ing upon the picture content. With an AC-coupled out-
put, the average level will change according to the time
constant formed by the series capacitor and series
resistance (usually 150
Ω). For example, Figure 4 shows
an AC-coupled video signal alternating between a
completely black screen and a completely white
screen. Notice the excursion of the video signal as the
screen changes.
With the DirectDrive amplifier, the black level is held at
ground. The video signal is constrained between -0.3V
to +0.7V. Figure 5 shows the video signal from a
DirectDrive amplifier with the same input signal as the
AC-coupled system.
Video Reconstruction Filter
The MAX9507 includes an internal five-pole,
Butterworth lowpass filter to condition the video signal.
The reconstruction filter smoothes the steps and
reduces the spikes created whenever the DAC output
changes value. In the frequency domain, the steps and
spikes cause images of the video signal to appear at
multiples of the sampling clock frequency. The recon-
struction filter typically has ±1dB passband flatness of
7.3MHz and 48dB attenuation at 27MHz.
MAX9507
1.8V DirectDrive Video Filter Amplifier with
Load Detection and Dual SPST Analog Switches
______________________________________________________________________________________
13
INPUT
OUTPUT
2ms/div
INPUT
OUTPUT
2ms/div
0V
Figure 4. AC-Coupled Output
Figure 5. DirectDrive Output
相关PDF资料 |
PDF描述 |
|---|---|
| AD7549JP | IC DAC 12BIT DUAL LC2MOS 20-PLCC |
| MAX9650AUA+ | IC OP AMP VCOM DRIVE 8-UMAX-EP |
| AD561JNZ | IC DAC 10BIT MONO VOLT IN 16DIP |
| AD7841ASZ-REEL | IC DAC 14BIT OCTAL VOUT 44-MQFP |
| VE-J1X-MZ-B1 | CONVERTER MINIMOD DC/DC 5.2V 25W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9507ATE+ | 功能描述:视频放大器 1.8V DirectDrive Video Filter Amp RoHS:否 制造商:ON Semiconductor 通道数量:4 电源类型: 工作电源电压:3.3 V, 5 V 电源电流: 最小工作温度: 最大工作温度: 封装 / 箱体:TSSOP-14 封装:Reel |
| MAX9507ATE+T | 功能描述:视频放大器 1.8V DirectDrive Video Filter Amp RoHS:否 制造商:ON Semiconductor 通道数量:4 电源类型: 工作电源电压:3.3 V, 5 V 电源电流: 最小工作温度: 最大工作温度: 封装 / 箱体:TSSOP-14 封装:Reel |
| MAX9507EVCMAXQU+ | 功能描述:放大器 IC 开发工具 MAX9507 Eval Kit RoHS:否 制造商:International Rectifier 产品:Demonstration Boards 类型:Power Amplifiers 工具用于评估:IR4302 工作电源电压:13 V to 23 V |
| MAX9507EVKIT | 功能描述:视频放大器 RoHS:否 制造商:ON Semiconductor 通道数量:4 电源类型: 工作电源电压:3.3 V, 5 V 电源电流: 最小工作温度: 最大工作温度: 封装 / 箱体:TSSOP-14 封装:Reel |
| MAX9507EVKIT+ | 功能描述:放大器 IC 开发工具 MAX9507 Eval Kit RoHS:否 制造商:International Rectifier 产品:Demonstration Boards 类型:Power Amplifiers 工具用于评估:IR4302 工作电源电压:13 V to 23 V |
发布紧急采购，3分钟左右您将得到回复。