Product Summary

The LM12458CIV is a highly integrated Data Acquisition System. Operating on just 5V, the LM12458CIV combines 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 LM12458CIV’s eight-input multiplexer. The LM12458CIV can also operate with 8-bit + sign resolution and in a supervisory watchdog mode that compares an input signal against two programmable limits.

Parametrics

LM12458CIV absolute maximum ratings: (1)Supply Voltage (VA+ and VD+): 6.0V; (2)Voltage at Input and Output Pins, except analog inputs: -0.3V to (V+ + 0.3V); (3)Voltage at Analog Inputs: -5V to (V+ + 5V); (4)|VA+-VD+|: 300 mV; (5)Input Current at Any Pin: ±5mA; (6)Package Input Current: ±20 mA; (7)Power Dissipation, PQFP (TA = 25℃): 875 mW; (8)Storage Temperature: -65 to +150℃; (9)Lead Temperature: +300℃; (10)ESD Susceptibility: 1.5 kV.

Features

LM12458CIV features: (1)Three operating modes: 12-bit + sign, 8-bit + sign, and watchdog; (2)Single-ended or differential inputs; (3)Built-in Sample-and-Hold and 2.5V bandgap reference; (4)Instruction RAM and event sequencer; (5)8-channel multiplexer; (6)32-word conversion FIFO; (7)Programmable acquisition times and conversion rates; (8)Self-calibration and diagnostic mode; (9)8- or 16-bit wide data bus microprocessor or DSP interface.

Diagrams

LM12458CIV functional diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LM12458CIV
LM12458CIV
National Semiconductor (TI)
ADC (A/D Converters)
Data Sheet
0-25: $16.33
25-100: $14.97
100-250: $13.15
250-500: $12.48
LM12458CIV/NOPB
LM12458CIV/NOPB
National Semiconductor (TI)
ADC (A/D Converters) 12B PLUS SIGN DATA ACQUISITION SYSTEM
Data Sheet
0-1: $14.64
1-25: $12.44
25-100: $11.53
100-250: $10.61
LM12458CIVX/NOPB
LM12458CIVX/NOPB
National Semiconductor (TI)
ADC (A/D Converters)
Data Sheet
0-245: $14.98
245-250: $13.16
250-500: $10.06
LM12458CIVX
LM12458CIVX
National Semiconductor (TI)
ADC (A/D Converters)
Data Sheet
0-500: $12.48
LM12458CIVF
LM12458CIVF

IC ACQUISITION SYS 12BIT 44-PLCC
Data Sheet
Negotiable