MAX1400EAI

Product Summary

The MAX1400EAI is an 18-Bit, Low-Power, Multichannel, Oversampling (Sigma-Delta) ADC. It uses a sigma-delta modulator with a digital decimation filter to achieve true 16-bit accuracy. The user-selectable decimation factor of the digital filter allows the conversion resolution to be reduced in exchange for a higher output data rate. The MAX1400EAI achieves true 16-bit performance at an output data rate of up to 480sps. In addition, the modulator sampling frequency may be optimized for either lowest power dissipation or highest throughput rate. The MAX1400EAI operates from +5V. The applications of the MAX1400EAI include Portable Industrial Instruments, Portable Weigh Scales, Loop-Powered Systems, and Pressure Transducers.

Parametrics

MAX1400EAI absolute maximum ratings: (1)V+ to AGND, DGND: -0.3V to +6V; (2)VDD to AGND, DGND: -0.3V to +6V; (3)AGND to DGND: -0.3V to +0.3V; (4)Analog Inputs to AGND: -0.3V to (V+ + 0.3V); (5)Analog Outputs to AGND: -0.3V to (V+ + 0.3V); (6)Reference Inputs to AGND: -0.3V to (V+ + 0.3V); (7)CLKIN and CLKOUT to DGND: -0.3V to (VDD + 0.3V); (8)All Other Digital Inputs to DGND: -0.3V to +6V; (9)All Digital Outputs to DGND: -0.3V to (VDD + 0.3V); (10)Maximum Current Input into Any Pin: 50mA; (11)Continuous Power Dissipation (TA = +70℃) 28-Pin SSOP (derate 9.52mW/℃ above +70℃): 524mW; (12)Operating Temperature Ranges: -40℃ to +85℃; (13)Storage Temperature Range: -60℃ to +150℃; (14)Lead Temperature (soldering, 10sec): +300℃.

Features

MAX1400EAI features: (1)18-Bit Resolution, Sigma-Delta ADC; (2)16-Bit Performance with No Missing Codes to 480sps; (3)Low Quiescent Current 250μA (operating mode), 2μA (power-down mode); (4)3 Fully Differential or 5 Pseudo-Differential Signal Input Channels; (5)2 Additional Fully Differential Calibration Channels/Auxiliary Input Channels; (6)Access to the Mux Output/ADC Input; (7)Programmable Gain and Offset; (8)Fully Differential Reference Inputs; (9)Converts Continuously or On Command; (10)Automatic Channel Scanning and Continuous Data Output Mode; (11)Operates with +5V Analog Supply and +3V or +5V Digital Supply; (12)SPI/QSPI Compatible 3-Wire Serial Interface; (13)28-Pin SSOP Package.

Diagrams