ADAS1134

128-Channel, 24-Bit Current-to-Digital ADC

RECOMMENDED FOR NEW DESIGNS

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Features

128-channel, low level current-to-digital converter
Up to 24-bit resolution
Up to 22.6 kSPS (44.2 µs integration time)
Simultaneous sampling
No dead time, no loss of charge
Ultralow noise down to 0.32 fC rms (2000 e⁻)
User adjustable full-scale range
INL: ±0.05% of reading of ±1.0 ppm FSR_I
Low power dissipation: 2.25 mW per channel
LVDS self clocked serial data interface
Serial peripheral interface (SPI) configuration registers (daisy-chain capability)
On-board temperature sensor and reference buffer
10 mm × 10 mm, 242-ball CSP_BGA package
See data sheet for additional features

Additional Details

The ADAS1134 is a 128-channel, current-to-digital, analog-to-digital converter (ADC). It contains 128 low power, low noise, low input current integrators, simultaneous sample-and-holds, and two high speed, high resolution ADCs with configurable sampling rate and resolutions up to 24 bits.

All converted channel results are output on a single, low voltage differential signaling (LVDS), self clocked serial interface, which reduces external hardware.

An SPI-compatible serial interface allows configuration of the ADC using the SDI input. The SDO output allows the user to daisy-chain several ADCs on a single, 3-wire bus. The ADAS1134 uses IOVDD, a separate supply, to reduce digital noise effect on the conversions.

The ADAS1134 is available in a 10 mm × 10 mm, 242-ball CSP_BGA package.

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)

Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA). Please send your project details, company information and contact by e-mail to ADAS@analog.com.

Please contact the ADC Development Group for additional technical information.

For additional ADI Healthcare Products and related information, please visit www.analog.com/healthcare.