V. Rieger, C. Brendler, Naser Pour Aryan, A. Rothermel
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A 10-bit current-steering D/A converter for active pixel sensor control
A compact 10-bit current-steering D/A converter in a 0.35 μm CMOS technology is presented. The DAC is designed for active pixel sensor control of a retinal implant. A new current cell has been used to minimize power consumption and reduce glitching. To guarantee monotonicity and to achieve good dynamic and static performance a segmentation level of 4-6 has been used. A triple common-centroid layout technique has been applied and an active area of 0.7 mm2 has been used. The measured differential and integral linearity errors are less than ± 0.2 LSB and ± 0.3 LSB, respectively.
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