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用REF102设计获得精确的-10V基准
消耗积分:5 |
格式:rar |
大小:30 |
2009-06-01
胡秋阳
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The need for a precision –10.0V reference arises often. For
example, the best way to get a 0V to +10V output from a
CMOS MDAC is to use a –10V reference (see Figures 4-6).
ADI/PMI has the REF-08 –10V reference, but it has limited
performance. Although Burr-Brown offers no –10V reference,
the REF102 precision +10.0V reference can be accurately
converted to a precision –10.0V reference. The circuit
is simple and requires no precision components. The 2.5ppm/
°C temperature drift of the Burr-Brown REF102 is twenty
times better than the 50ppm/°C best grade of the PMI REF-
08. (Even our lowest grade is five times better.)
example, the best way to get a 0V to +10V output from a
CMOS MDAC is to use a –10V reference (see Figures 4-6).
ADI/PMI has the REF-08 –10V reference, but it has limited
performance. Although Burr-Brown offers no –10V reference,
the REF102 precision +10.0V reference can be accurately
converted to a precision –10.0V reference. The circuit
is simple and requires no precision components. The 2.5ppm/
°C temperature drift of the Burr-Brown REF102 is twenty
times better than the 50ppm/°C best grade of the PMI REF-
08. (Even our lowest grade is five times better.)
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