التفاصيل البيبلوغرافية
| العنوان: |
Reference Voltage for Multiple ADCs |
| المساهمون: |
The Pennsylvania State University CiteSeerX Archives |
| المصدر: |
http://pdfserv.maxim-ic.com/en/an/AN994.pdfTest. |
| سنة النشر: |
2002 |
| المجموعة: |
CiteSeerX |
| مصطلحات موضوعية: |
reference voltage, accuracy, multiple high-speed ADCs, analog to digital converter, on-chip, buffered, unbuffered, ultrasound imaging system, noise, noise density, precision, gain matching |
| الوصف: |
This paper discusses the successful implementation of two reference circuits tailored to the spacesaving needs of ultrasound imaging applications, which commonly encounter the demand for one reference source to power multiple analog-to-digital converters (ADCs). Finally, the two circuits were put to the test and their results are discussed in the following note. The achievable accuracy for systems with multiple analog-to-digital converters (ADCs) depends directly on the reference voltage(s) applied to the ADCs. Medical ultrasound imaging systems, for example, commonly include a large number of ADCs in the receiver's beamformer electronics, usually organized in groups of 16, 24, 32, etc. Maximum beam accuracy requires that you minimize errors in this path. Poor accuracy in the reference voltage of individual ADCs degrades the overall system, as does the distributed load, which consists of many individual resistive and capacitive loads. Several approaches can provide the reference voltage for such ADC arrays: Individual on-chip references: Though it offers a convenient connection locally to each ADC, this option features relatively poor matching between the converters. A single external reference voltage applied to all reference inputs of the ADC array: Such a configuration lets you engineer an external reference voltage of arbitrary accuracy, but incurs error due to small variations among the resistor ladders (one ladder internal to each ADC). |
| نوع الوثيقة: |
text |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| العلاقة: |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.211.1860Test; http://pdfserv.maxim-ic.com/en/an/AN994.pdfTest |
| الإتاحة: |
http://pdfserv.maxim-ic.com/en/an/AN994.pdfTest |
| حقوق: |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
| رقم الانضمام: |
edsbas.60BFA6D1 |
| قاعدة البيانات: |
BASE |
