Part # LM12H458 datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LM12454 LM12458 LM12H458 12-Bit + Sign Data Acquisition System with Self-Calibration


Part Details:

12-Bit LM12454/LM12458/LM12H458 February 2006 +Sign LM12454/LM12458/LM12H45812-Bit + Sign Data Acquisition System with Data Self-CalibrationGeneral Description Key Specifications Acquisition The LM12458, and LM12H458 are highly integrated Data (f = 5 MHz; 8 MHz, H) CLK Acquisition Systems. Operating on just 5V, they combine a j Resolution 12-bit + sign or 8-bit + sign fully-differential self-calibrating (correcting linearity and zeroerrors) 13-bit (12-bit + sign) analog-to-digital converter j 13-bit conversion time 8.8 µs, 5.5 µs (H) (max) (ADC) and sample-and-hold (S/H) with extensive analog j 9-bit conversion time 4.2 µs, 2.6 µs (H) (max) functions and digital functionality. Up to 32 consecutive con- j 13-bit Through-put rate 88k samples/s (min), versions, using two s complement format, can be stored inan internal 32-word (16-bit wide) FIFO data buffer. An inter- 140k samples/s (H) (min) System nal 8-word RAM can store the conversion sequence for up to j Comparison time 2.2 µs (max), eight acquisitions through the LM12(H)458 s eight-input mul- ("watchdog" mode) 1.4 µs (H) (max) tiplexer. The obsolete LM12454 has a four-channel multi- j ILE ±1 LSB (max) plexer, a differential multiplexer output, and a differential S/H + input. The LM12(H)458 can also operate with 8-bit + sign j V range GND to V IN A with resolution and in a supervisory "watchdog" mode that com- j


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LM12H458.pdf Datasheet