A Hybrid Incremental and Cyclic ADC for IRFPA Readout Circuit

Acta Scientiarum Naturalium Universitatis Pekinensis

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A Hybrid Incremental and Cyclic ADC for IRFPA Readout Circuit

FAN Miaomiao^1,2, ZHANG Yacong², LU Wengao², SHEN Guangchong^1,2, CHEN Zhongjian², MENG Xiangyun², LIU Sanlin²

1. School of Electronic and Computer Engineering, Shenzhen Graduate School, Peking University, Shenzhen 518055;2. Key Laboratory of Microelectronic Devices and Circuits MOE, Peking University, Beijing 100871;

Received:2013-04-05 Online:2014-07-20 Published:2014-07-20

用于红外焦平面读出电路的增量/循环混合型模数转换器

樊苗苗^1,2,张雅聪²,鲁文高²,沈广冲^1,2,陈中建²,孟祥云²,刘三林²

1. 北京大学深圳研究生院信息工程学院微电子学与固体电子学, 深圳 518055; 2. 北京大学微电子器件与电路教育部重点实验室, 北京100871;

Abstract

Abstract: A 14-bit column-parallel hybrid incremental and cyclic ADC was designed for IRFPA (infrared focal plane array) readout circuit. The conversion consists of two steps which are incremental mode and cyclic mode. It is a good trade-off between resolution and conversion time. The circuit is implemented in XFAB 0.35 μm process with analog supply of 5 V and digital supply of 3.3 V. The converter is featured with a wide conversion range from 0 to 3.2 V. A conversion cycle needs 27.6 μs at clock frequency of 5 MHz for the 14-bit structure.

Key words: ADC, incremental, cyclic, RSD

摘要： 为红外焦平面阵列读出电路设计了一个列并行的混合型模数转换器, 转换过程分为两级: 增量型转换器和循环型转换器, 兼顾精度和转换速度的要求。电路在0.35 μm XFAB工艺下设计, 模拟电源为5 V, 数字电源为3.3 V。此转换器可以转换0~3.2 V的电压, 输出数字信号为14 bit, 时钟频率5 MHz时转换周期为27.6 μs。

关键词: 模数转换器, 增量型转换器, 循环型转换器, 冗余有效位

CLC Number:

TN492

FAN Miaomiao,ZHANG Yacong,LU Wengao,SHEN Guangchong,CHEN Zhongjian,MENG Xiangyun,LIU Sanlin. A Hybrid Incremental and Cyclic ADC for IRFPA Readout Circuit[J]. Acta Scientiarum Naturalium Universitatis Pekinensis.

樊苗苗,张雅聪,鲁文高,沈广冲,陈中建,孟祥云,刘三林. 用于红外焦平面读出电路的增量/循环混合型模数转换器[J]. 北京大学学报（自然科学版）.

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A Hybrid Incremental and Cyclic ADC for IRFPA Readout Circuit

用于红外焦平面读出电路的增量/循环混合型模数转换器

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