Models ADC1130, ADC1131 FEATURES 14-BIT Resolution Accuracy Fast
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14-Bit High Speed Analog Digital Converter
Models ADC1130, ADC1131
FEATURES 14-BIT Resolution Accuracy Fast 12µs Conversion Time (ADC1131J/K) 10ppm/°C Maximum Gain User Choice Input Range Missing Codes
APPLICATIONS Wide Band Data Digitizing Multi-Channel Computer Interface High Accuracy Data Acquisition X-Ray Tomography Nuclear Accelerator Instrumentation
GENERAL DESCRIPTION ADC11130 ADCI high speed analog-to-digital converters packaged small 0.4" 10mm) module, which perform complete 14-bit conversions 25µs 12µs respectively. Using successive approximations technique, they convert analog input voltages into natural binary, offset binary, two's complement coded outputs. Data outputs provided both parallel non-return-to-zero serial form. Four analog input ranges available: +20V, +10V, ±10V, ±5V. user selects desired range making appropriate connections module terminals. ADC1130 ADC1131 also connected perform conversions less than resolution with proportionate decrease conversion time. TIMING shown Figure leading edge convert command output Logic CLOCK OUT, STATUS, MSB, through outputs Logic "1". Nothing further happens until convert command returns Logic "0", which time clock starts conversion proceeds. With Logic state, internal digital-to-analog converter's output compared with analog input. output less than analog input, first clock transition resets Logic "1". output greater than analog input, remains Logic "0". first clock transition also sets output Logic another comparison made. This process continues through successive until (LSB) comparison completed.
this point STATUS CLOCK return Logic conversion cycle ends. serial data output non-return-to-zero (NRZ) format. data available, first, 20ns after each fourteen clock transitions.
Figure Timing Diagram
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