Shengyou Zhong, Nan Chen, Mingguo Fan, Jiqing Zhang, Qin Zhu, Libin Yao. 640×512 digital InGaAs detector assembly[J]. Infrared and Laser Engineering, 2020, 49(7): 20190495
- Infrared and Laser Engineering
- Vol. 49, Issue 7, 20190495 (2020)
Fig. 1. Column level ADC DROIC diagram
Fig. 2. (a) Conventional readout unit circuit diagram, (b) readout unit circuit with the proposed buffer
Fig. 3. (a) Traditional Sigma-Delta ADC diagram, (b) second order Incremental Sigma-Delta modulator diagram
Fig. 4. Schematic of the OTA
Fig. 5. (a) Second order Sigma-Delta decimator, (b) second order Incremental Sigma-Delta decimator
Fig. 6. Proposed data transmission circuit diagram
Fig. 7. Pictures of InGaAs detector chip and digital InGaAs detector assembly
Fig. 8. Test result of ROIC. (a) Noise test result, (b) linearity test result
Fig. 9. (a) Prototype of 640×512 digital InGaAs thermal IR imager, (b) close shot captured by the prototype of 640×512 digital InGaAs thermal IR imager, (c) distant view captured by the prototype of 640×512 digital InGaAs thermal IR imager
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Table 1. Comparison of performance among different InGaAs detector products
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