8-Bit, Microprocessor-Compatible, A/D Converters - P# ^' F8 i' q3 J3 d( V: FThe ADC0802 family are CMOS 8-Bit, successive-approximation# S' | J7 t e
A/D converters which use a modified potentiometric3 ]/ t4 e' q0 _% p/ \! v& U
ladder and are designed to operate with the 8080A control " W( \7 X- [6 r# ?; Xbus via three-state outputs. These converters appear to the/ X/ a% ~+ X: H5 q8 o" Y* A
processor as memory locations or I/O ports, and hence no ; ^/ f% I/ p8 l7 zinterfacing logic is required. 9 X9 L, `1 C; Z( qThe differential analog voltage input has good commonmode-3 |& v' X% p- n* K" c
rejection and permits offsetting the analog zero-inputvoltage & [1 j W( _1 n4 V0 j. X5 Ovalue. In addition, the voltage reference input can be) @2 m% J/ S! @. l, X2 h& a
adjusted to allow encoding any smaller analog voltage span! e; `5 p+ X" @4 t. U
to the full 8 bits of resolution.8 d8 m9 s& o8 x. d$ t/ l; Y9 Z
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发表于 2008-12-21 09:55:58
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