详情
特点
- 256-channel in 14 x 14 mm² FBGA package
- Ultra-low noise of 0.29 fC at 0.5 μA input current in low noise mode
- Lowest power dissipation of 1.25 mW per channel in low power mode
- Adjustable integration time down to 51 μs (20 kSPS) at 20-bit resolution. Up to 26-bit at integration times of 1 ms
- Zero biased photodiodes (true ground concept) for ultra-low dark currents
- Integral linearity of ±0.080% of reading and ±0.2 ppm of full-scale range (all channels active)
- Automatic zero offset calibration, input charge calibration and linearity calibration
优势
- No external components required. Integrated capacitors for supply and reference decoupling
- No charge loss. Continuous charge integration due to zero dead time of ADC architecture
- Selectable full-scale range of 0.5 μA in low range and 1 μA in high range
- Adjustable full-scale range, integration time and power consumption via SPI interface as well as adjustable output modes via LVDS
- Selectable power supply concept between dual ±1.5 V analog supply (true ground concept) or single +3.0 V analog supply
- On-chip LDOs, voltage references and temperature sensor
- Built-in diagnostic modes for testing full detector signal chain
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Block diagram
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