Overview

Description

The Intersil HI7190 is a monolithic instrumentation, sigma delta A/D converter which operates from ±5V supplies. Both the signal and reference inputs are fully differential for maximum flexibility and performance. An internal Programmable Gain Instrumentation Amplifier (PGIA) provides input gains from 1 to 128 eliminating the need for external pre-amplifiers. The on-demand converter autocalibrate function is capable of removing offset and gain errors existing in external and internal circuitry. The on-board user programmable digital filter provides over 120dB of 60/50Hz noise rejection and allows fine tuning of resolution and conversion speed over a wide dynamic range. The HI7190 and HI7191 are functionally the same device, but the HI7190 has tighter linearity specifications. The HI7190 contains a serial I/O port and is compatible with most synchronous transfer formats including both the Motorola 6805/11 series SPI and Intel 8051 series SSR protocols. A sophisticated set of commands gives the user control over calibration, PGIA gain, device selection, standby mode, and several other features. The On-chip Calibration Registers allow the user to read and write calibration data.

Features

  • 22-Bit Resolution with No Missing Code
  • 0.0007% Integral Non-Linearity (Typ)
  • 20mV to ±2.5V Full Scale Input Ranges
  • Internal PGIA with Gains of 1 to 128
  • Serial Data I/O Interface, SPI Compatible
  • Differential Analog and Reference Inputs
  • Internal or System Calibration
  • 120dB Rejection of 60/50Hz Line Noise
  • Settling Time of 4 Conversions (Max) for a Step Input
  • Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

Applications

  • Process Control and Measurement
  • Industrial Weight Scales
  • Part Counting Scales
  • Laboratory Instrumentation
  • Seismic Monitoring
  • Magnetic Field Monitoring

Documentation

Type
Date
PDF 1.25 MB Datasheet
PDF 5.20 MB 日本語 Brochure
PDF 388 KB End Of Life Notice
PDF 98 KB Product Change Notice
PDF 86 KB Product Change Notice
PDF 503 KB Application Note
PDF 1.08 MB Application Note
PDF 353 KB Application Note
PDF 262 KB Application Note
PDF 281 KB Application Note
PDF 508 KB Application Note
PDF 275 KB Other
PDF 270 KB Other
PDF 255 KB Other
PDF 287 KB Application Note
PDF 689 KB Manual - Development Tools
16 items

Design & Development

Software & Tools

Software Downloads

Type Date
PDF 388 KB End Of Life Notice
1 item

Models

Support