ALMA 3-bit 4 Gsample/s, 2-4 GHz Input Bandwidth... Converter. Abs.
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ALMA Memo # 532
The ALMA 3-bit 4 Gsample/s, 2-4 GHz Input Bandwidth, Flash Analog-to-Digital Converter
2005-10-03
A high speed low power analog-to-digital converter (ADC)
using the 0.255m BiCMOS SiGe technology from ST
Microelectronics has been developed to meet the
specifications of the ALMA project. The main features of this
ADC are: 3-bit resolution (8 quantization levels) in Gray
code, an input bandwidth from 2 to 4 GHz, 4 GHz sampling rate
(and possible operation up to 5 GHz), LVDS standard I/Os and
low power dissipation (< 1.4 W). We present in this paper
some details of our ADC design and performance results
obtained with the ALMA digitizer assembly including one ADC
followed by three high speed 1:16 deserializers. ALMA
production acceptance tests are briefly described.
View a pdf version of ALMA Memo #532.