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[资料] Bias Current Generators with Wide Dynamic Range

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发表于 2010-12-28 18:18:12 | 显示全部楼层 |阅读模式

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Mixed-signal or analog chips often require a wide range of biasing currents that are independent
of process and supply voltage and that are proportional to absolute temperature. This paper describes CMOS
circuits that we use to generate a set of fixed bias currents typically spanning six decades at room temperature
down to a few times the transistor off-current. A bootstrapped current reference with a new startup and power-
control mechanism generates a master current, which is successively divided by a current splitter to generate the
desired reference currents. These references are nondestructively copied to form the chip’s biases. Measurements
of behavior, including temperature effects from 1.6 and 0.35 µ implementations, are presented and nonidealities are
investigated. Temperature dependence of the transistor off-current is investigated because it determines the lower
limit for generated currents. Readers are directed to a design kit that allows easy generation of the complete layout
for a bias generator with a set of desired currents for scalable MOSIS CMOS processes.

Bias Current Generators with Wide Dynamic Range.pdf (3.53 MB, 下载次数: 219 )
发表于 2010-12-28 23:24:55 | 显示全部楼层
下来看看
发表于 2011-1-9 02:06:44 | 显示全部楼层
回复 1# kevinwjs


    good thx !!!!!!!!
发表于 2011-1-9 18:46:40 | 显示全部楼层
thanks u
发表于 2011-1-13 13:35:53 | 显示全部楼层
thank you
发表于 2011-1-18 17:33:25 | 显示全部楼层
thanks a lot
发表于 2011-1-19 10:11:17 | 显示全部楼层
下来看看
发表于 2011-1-19 12:48:13 | 显示全部楼层
ding....
发表于 2011-1-21 19:54:05 | 显示全部楼层
than you very much
发表于 2011-1-31 16:25:02 | 显示全部楼层
thanks!!!!
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