数据搜索系统,热门电子元器件搜索 |
|
AD8372-EVALZ1 数据表(PDF) 1 Page - Analog Devices |
|
AD8372-EVALZ1 数据表(HTML) 1 Page - Analog Devices |
1 / 16 page 41 dB Range, 1 dB Step Size, Programmable Dual VGA AD8372 Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2007 Analog Devices, Inc. All rights reserved. FEATURES Dual independent digitally controlled VGA Differential input and output 150 Ω differential input Open-collector differential output 7.8 dB noise figure to 100 MHz @ maximum gain HD2/HD3 better than 77 dBc for 1 V p-p differential output −3 dB bandwidth of 150 MHz 41 dB gain range 1 dB step size ± 0.2 dB Serial 8-bit bidirectional SPI control interface Wide input dynamic range Pin-programmable output stage Power-down feature Single 5 V supply: 106 mA per channel 32-lead LFCSP, 5 mm × 5 mm package APPLICATIONS Differential ADC drivers CMTS upstream direct sampling receivers CATV modem signal scaling Generic RF/IF gain stages Single-ended-to-differential conversion FUNCTIONAL BLOCK DIAGRAM ENB1 IPC1 INC1 CLK1 RXT2 LCH1 IPC2 INC2 REF1 SDI1 SDO1 REF2 OPC1 ONC1 RXT2 SDI2 LCH2 OPC2 ENB2 ONC2 SDO2 CLK2 POSTAMP CHANNEL 1 POSTAMP CHANNEL 2 REGISTERS AND GAIN DECODER AD8372 Figure 1. GENERAL DESCRIPTION The AD8372 is a dual, digitally controlled, variable gain amplifier that provides precise gain control, high IP3, and low noise figure. The excellent distortion performance and moderate signal bandwidth make the AD8372 a suitable gain control device for a variety of multichannel receiver applications. For wide input dynamic range applications, the AD8372 provides a broad 41 dB gain range. The gain is programmed through a bidirectional 4-pin serial interface. The serial inter- face consists of a clock, latch, data input, and data output lines for each channel. The AD8372 provides the ability to set the transconductance of the output stage using a single external resistor. The RXT1 and RXT2 pins provide a band gap derived stable reference voltage of 1.56 V. Typically 2.0 kΩ shunt resistors to ground are used to set the maximum gain to a nominal value of 31 dB. The current setting resistors can be adjusted to manipulate the gain and distortion performance of each channel. This is a flexible feature in applications where it is desirable to trade off distortion performance for lower power consumption. The AD8372 is powered on by applying the appropriate logic level to the ENB1, ENB2 pins. When powered down, the AD8372 consumes less than 2.6 mA and offers excellent input-to-output isolation. The gain setting is preserved when powered down. Fabricated on an Analog Devices high frequency BiCMOS process, the AD8372 provides precise gain adjustment capabilities with good distortion performance. The quiescent current of the AD8372 is typically 106 mA per channel. The AD8372 amplifier comes in a compact, thermally enhanced 5 mm × 5 mm 32-lead LFCSP package and operates over the temperature range of −40°C to +85°C. |
类似零件编号 - AD8372-EVALZ1 |
|
类似说明 - AD8372-EVALZ1 |
|
|
链接网址 |
隐私政策 |
ALLDATASHEETCN.COM |
ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |