提出一种320×256阵列红外焦平面读出电路,采用直接注入模式,具有多路输出、读出顺序可选等功能。具体设计了各个模块电路,并采用chartered 0.35μm工艺进行流片设计。实测结果表明所设计芯片输出摆幅为3.24 V,输出电压线性度为97.15%,功耗为32 m W,具有丰富的读出功能。 A 320 × 256 array infrared focal plane readout circuit is proposed, which adopts the direct injection mode and has the functions of multiple output and readout sequence. Specifically designed each module circuit, and the use of chartered 0.35μm process chip design. The measured results show that the designed chip output swing of 3.24 V, the output voltage linearity of 97.15%, power consumption of 32 m W, with a rich readout.