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MAX1403

Maxim
Part Number MAX1403
Manufacturer Maxim
Description +3V / 18-Bit / Low-Power / Multichannel / Oversampling Sigma-Delta ADC
Published May 6, 2005
Detailed Description 19-1481; Rev 0; 4/99 KIT ATION EVALU E L B A AVAIL +3V, 18-Bit, Low-Power, Multichannel, Oversampling (Sigma-Delta) AD...
Datasheet PDF File MAX1403 PDF File

MAX1403
MAX1403


Overview
19-1481; Rev 0; 4/99 KIT ATION EVALU E L B A AVAIL +3V, 18-Bit, Low-Power, Multichannel, Oversampling (Sigma-Delta) ADC General Description Features o 18-Bit Resolution, Sigma-Delta ADC o 16-Bit Accuracy with No Missing Codes to 480sps o Matched On-Board Current Sources (200µA) for Sensor Excitation o Low Quiescent Current 250µA (operating mode) 2µA (power-down mode) o 3 Fully Differential or 5 Pseudo-Differential Signal Input Channels o 2 Additional, Fully Differential Calibration Channels/Auxiliary Input Channels o Programmable Gain and Offset o Fully Differential Reference Inputs o Converts Continuously or On Command o Automatic Channel Scanning and Continuous Data Output Mode o Operates with Analog and Digital Supplies from +2.
7V to +3.
6V o SPI™/QSPI™-Compatible 3-Wire Serial Interface o 28-Pin SSOP Package MAX1403 The MAX1403 18-bit, low-power, multichannel, serialoutput analog-to-digital converter (ADC) features matched 200µA current sources for sensor excitation.
This ADC uses a sigma-delta modulator with a digital decimation filter to achieve 16-bit accuracy.
The digital filter’s user-selectable decimation factor allows the conversion resolution to be reduced in exchange for a higher output data rate.
True 16-bit performance is achieved 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 MAX1403 operates from +3V.
This device offers three fully differential input channels that may be independently programmed with a gain between +1V/V and +128V/V.
Furthermore, it can compensate an input-referred DC offset up to 117% of the selected full-scale range.
These three differential channels may also be configured to operate as five pseudodifferential input channels.
Two additional, fully differential system-calibration channels are provided for gain and offset error correction.
The MAX1403 can be configured to sequentially scan all signal inputs ...


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