ADAS1135

Data Sheet 256-Channel, 24-Bit, Current-to-Digital ADC Module ADAS1135 FEATURES 256-channel, current-to-digital converter module Up to 24-bit resolution Variable integration time Fastest integration time: 22.6 kSPS maximum (44.2 μs minimum) at 20-bit resolution Low power dissipation: 2.3 mW per channel at any throughput Integral linearity ±0.050% of reading, ±1.0 ppm of FSR: all channels active Very low noise Simultaneous sampling No dead time, no loss of charge, 100% charge collection User adjustable full-scale range On-board temperature sensor and reference buffer 15 mm × 15 mm, CSP_BGA package Simple printed circuit board (PCB) design Integrated capacitors for supply and reference decoupling 0.80 mm pitch BGA allows low cost PCB technology Support tools Evaluation board Reference design with reference layout FPGA Verilog code APPLICATIONS Medical, industrial, and security CT scanner data acquisition Photodiode sensors Dosimetry and radiation therapy systems Optical fiber power monitoring X-ray detection systems High channel count data acquisition systems (current or voltage inputs) GENERAL DESCRIPTION The ADAS1135 is a 256-channel, current-to-digital, analog-todigital converter (ADC) module. It contains 256 low power, low noise, low input current integrators, simultaneous sample-andholds, and two high speed, high resolution ADCs with configurable sampling rate and resolutions of up to 24 bits. The signal chain and sampling architecture of the ADAS1135 is designed to gua...