поискавой системы для электроныых деталей |
|
AD7764BRUZ датащи(PDF) 1 Page - Analog Devices |
|
AD7764BRUZ датащи(HTML) 1 Page - Analog Devices |
1 / 21 page 24-Bit, 312 kSPS,109dB Σ∆ ADC, With On-Chip Buffers, Serial Interface Preliminary Technical Data AD7764 Rev. PrC 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 ©2006 Analog Devices, Inc. All rights reserved. FEATURES High performance 24-bit Sigma-Delta ADC 112dB SNR at 78kHz output data rate 106dB SNR at 312 kHz output data rate 312 kHz maximum fully filtered output word rate Pin-selectable over-sampling rate (64x to 256x) Flexible SPI serial interface Fully differential modulator input On-chip differential amplifier for signal buffering On-chip Reference Buffer Low pass FIR filter Over-range alert pin Digital gain correction registers Power down mode Synchronization of multiple devices via SYNC pin Daisy Chaining APPLICATIONS Data acquisition systems Vibration analysis Instrumentation PRODUCT OVERVIEW The AD7764 high performance, 24-bit, sigma delta analog to digital converter combines wide input bandwidth, high speed and performance of 109dB at a 312Khz output data rate with the benefits of sigma delta conversion, while, also offering excellent DC specifications which make the converter ideal for high speed data acquisition of AC signals where DC data is also a requirement. A wide dynamic range combined with significantly reduced anti-aliasing requirements simplifies the design process. The AD7764 offers pin-selectable decimation rates of 64x, 128x, and 256x. Other features include an integrated buffer to drive the reference, a differential amplifier for signal buffering and level shifting. The addition of an internal gain register, an over-range alert pin, and a low-pass digital FIR filter make the AD7764 a compact highly integrated data acquisition device requiring minimal peripheral component selection. The AD7764 is ideally suited to applications demanding high SNR without necessitating design of complex front end signal processing. FUNCTIONAL BLOCK DIAGRAM Multi-Bit Sigma-Delta Modulator Reconstruction Decimation FIR Filter Engine DIFF + _ BUF Interface Logic and Offset & Gain Correction Registers MCLK SYNC RESET/PWRDN VIN- VIN+ AD7764 VREF+ REFGND AVDD1 AVDD2 AVDD3 DECAP RBIAS DVDD OVERRANGE DEC_RATE AVDD3 VINA- VINA+ VOUTA- VOUTA+ Figure 1. The differential input is sampled at up to 40MS/s by an analog modulator. The modulator output is processed by a series of low-pass filters. The sample rate, filter corner frequencies and output word rate are determined by the external clock frequency supplied to the AD7764. The reference voltage supplied to the AD7764 determines the analog input range. With a 4V reference, the analog input range is ±3.2V differential biased around a common mode of 2V. This common mode biasing can be achieved using the on-chip differential amplifiers, further reducing the external signal conditioning requirements. The AD7764 is available in a 28-lead TSSOP package and is specified over the industrial temperature range from -40°C to +85°C RELATED DEVICES Part no. Description AD7760 24-bit, 2.5MSPS, 100dB Σ∆, parallel interface AD7762 24-bit, 625ksps, 109dB Σ∆, parallel interface AD7763 24-bit, 625ksps, 109dB Σ∆, serial interface AD7765 24-bit, 156kSPS, 109dB Σ∆, serial interface |
Аналогичный номер детали - AD7764BRUZ |
|
Аналогичное описание - AD7764BRUZ |
|
|
ссылки URL |
Конфиденциальность |
ALLDATASHEETRU.COM |
Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | обмен ссыками | поиск по производителю 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 |