 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
AD8264-EVALZ Datasheet(PDF) 1 Page - Analog Devices |
|
||||||||||||||||||||||||||||||
AD8264-EVALZ Datasheet(HTML) 1 Page - Analog Devices |
|
|
1 / 40 page  Quad, 235 MHz, DC-Coupled VGA and Differential Output Amplifier AD8264 Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother 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 ©2009 Analog Devices, Inc. All rights reserved. FEATURES Low noise Voltage noise: 2.3 nV/√Hz Current noise: 2 pA/√Hz Wide bandwidth Small signal: 235 MHz (VGAx); 80 MHz (differential output amplifier) Large signal: 80 MHz (1 V p-p) Gain range 0 to 24 dB (input to VGA output) 6 to 30 dB (input to differential output) Gain scaling: 20 dB/V DC-coupled Single-ended input and differential output Supplies: ±2.5 V to ±5 V Low power: 140 mW per channel @ ±3.3 V APPLICATIONS Multichannel data acquisition Positron emission tomography Gain trim Industrial and medical ultrasound Radar receivers FUNCTIONAL BLOCK DIAGRAM VOCM VPOS IPP1 GNH1 IPN1 ATTENUATOR –24dB TO 0dB VOH1 VOL1 IPP3 GNH3 IPN3 VOH3 VOL3 6dB IPP4 GNH4 IPN4 + – PrA 6dB + – PrA 6dB + – PrA 6dB + – PrA 6dB VOH4 VOL4 6dB IPP2 GNH2 IPN2 ATTENUATOR –24dB TO 0dB ATTENUATOR –24dB TO 0dB ATTENUATOR –24dB TO 0dB VOH2 VOL2 OPP2 GNLO OPP3 OPP4 18dB 18dB 18dB 18dB OFS2 OFS1 OFS3 OFS4 VNEG VGA1 VGA2 VGA3 COMM OPP1 VGA4 + – + – + – + – + – + – + – + – CH1 GAIN CONTROL CH2 GAIN CONTROL CH3 GAIN CONTROL CH4 GAIN CONTROL 6dB 6dB Figure 1. GENERAL DESCRIPTION The AD8264 is a 4-channel, linear-in-dB, general-purpose variable gain amplifier (VGA) with a preamplifier (preamp), and a flexible differential output buffer. Intended for a broad range of applications, dc coupling combined with wide band- width makes this amplifier a very good pulse processor. Each channel includes a single-ended input preamp/VGA section to preserve the wide bandwidth and fast slew rate for low- distortion pulse applications. A 6 dB differential output buffer with common-mode and offset adjustments enable direct coupling to most modern high speed analog-to-digital converters (ADCs), using the converter reference output for perfect dc matching levels. The −3 dB bandwidth of the preamp/VGA is dc to 235 MHz, and the bandwidth of the differential driver is 80 MHz. The floating gain control interface provides a precise linear-in-dB scale of 20 dB/V and is easy to interface to a variety of external circuits. The gain of each channel is adjusted independently, and all channels are referenced to a single pin, GNLO. Combined with a multi-output, digital-to-analog converter (DAC), each section of the AD8264 can be used for active calibration or as a trim amplifier. The gain range of the VGA section is 24 dB. Operation from a dual polarity power supply enables amplification of negative voltage pulses that are generated by current-sinking pulses into a grounded load, such as is typical of photodiodes or photo- multiplier tubes (PMT). Delay-free processing of wide-band video signals is also possible. The differential output amplifier permits convenient level shifting and interfacing to single- supply ADCs using the VOCM and OFSx pins. The AD8264 is available in a 40-lead, 6 mm × 6 mm LFCSP with an operating temperature range of −40°C to +105°C. |
Similar Part No. - AD8264-EVALZ |
|
Similar Description - AD8264-EVALZ |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
