LM12458CIVF | ||||||||
LM12458CIVF DescriptionLM12458CIVF DescriptionLM12458CIVF ManufacturerLM12458CIVF Datasheet (PDF)LM12458CIVF Price & AvailabilityLM12458CIVF Features
LM12458CIVF DescriptionThe LM12454, LM12458, and LM12H458 are highly integrated Data Acquisition Systems. Operating on just 5V, they combine a fully-differential self-calibrating (correcting linearity and zero errors) 13-bit (12-bit + sign) analog-to-digital converter (ADC) and sample-and-hold (S/H) with extensive analog functions and digital functionality. Up to 32 consecutive conversions, using two's complement format, can be stored in an internal 32-word (16-bit wide) FIFO data buffer. An internal 8-word RAM can store the conversion sequence for up to eight acquisitions through the LM12(H)458's eight-input multiplexer. The LM12454 has a four-channel multiplexer, a differential multiplexer output, and a differential S/H input. The LM12454 and LM12(H)458 can also operate with 8-bit + sign resolution and in a supervisory "watchdog" mode that compares an input signal against two programmable limits. Programmable acquisition times and conversion rates are possible through the use of internal clock-driven timers. The reference voltage input can be externally generated for absolute or ratiometric operation or can be derived using the internal 2.5V bandgap reference. All registers, RAM, and FIFO are directly addressable through the high speed microprocessor interface to either an 8-bit or 16-bit databus. The LM12454 and LM12(H)458 include a direct memory access (DMA) interface for high-speed conversion data transfer. An evaluation/interface board is available. Order number LM12458EVAL. Additional applications information can be found in applications notes AN-906, AN-947 and AN-949. LM12458CIVF ParametersProducts Similar to LM12458CIVFOther Components ISL3159EFUZ-T 3793-6205 CD74AC280M LTC6603CUF#PBF OPA1013 Keywords
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