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东芝电子元件及存储装置株式会社(“东芝”)推出一款面向A3多功能打印机的镜头缩小型[1]CCD线性图像传感器“TCD2728DG” 。
为了提高图像质量,需要降低信号中随机噪声(NDσ)[2]的影响。T
TCD2728DG降低了东芝现有产品TCD2726DG的输出放大器增益[3],并将随机噪声(NDσ)降低了约40%[4]。这一改进提升了多功能打印机的图像质量。新产品采用高速CCD线性图像传感器,数据速率为100MHz(50MHz×2通道)。
注:
[1]用光学镜头缩小图像并将其投射到CCD或CMOS图像传感器上的方法。
[2]影响图像质量的不规则噪声。
[3]调整输出信号放大率的电路。放大倍数与噪声成正比。
[4]东芝测量值。
注:
[5]产生驱动线性图像传感器所需信号的电路。
器件型号 | TCD2728DG |
---|---|
图像传感元素的有效数量 | 7,500个元素×3行 |
像素尺寸 | 4.7μm×4.7μm |
电源电压 | VAVDD、VDVDD、VCKDVDD:3.1至3.5 VVDD10:9.5至10.5 |
数据速率(最大值) | 100MHz(50MHz×2通道) |
封装 | 32 PIN CERDIP |
封装尺寸 | 53.60mm(L)×9.65mm(W) |
功能 | 时序发生器电路、CCD驱动电路 |