Analog Products

Overview

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.

HI7190 Functional Diagram
HI7190 Functional Diagram
  • 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

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

Documentation

Title
Type 		Date
HI7190 Datasheet
PDF 1.25 MB 		Datasheet
Analog ICs Brochure
PDF 5.20 MB 日本語 		Brochure
PLC18018 - General Q3 Product Life Cycle Notice
PDF 388 KB 		End Of Life Notice
PCN12094 - Alternate Manufacturing Site for Assembly of the Listed Intersil Packaged Products - Amkor Technology, Philippines (ATP)
PDF 98 KB 		Product Change Notice
PCN12086 - Alternate Manufacturing Site for Assembly of the Listed Intersil PDIP Packaged Products -Amkor Technology, Philippines (ATP)
PDF 86 KB 		Product Change Notice
AN9675: A Tutorial in Coherent and Windowed Sampling with A/D Converters
PDF 503 KB 		Application Note
AN002: Principles of Data Acquisition and Conversion
PDF 1.08 MB 		Application Note
AN9527: Interfacing the HI7190 to a Microcontroller
PDF 353 KB 		Application Note
AN9601: Using the HI7190 with Single +5V Supply
PDF 262 KB 		Application Note
AN9532: Using the HI7190 in a Multiplexed System
PDF 281 KB 		Application Note
AN9510: Basic Analog for Digital Designers
PDF 508 KB 		Application Note
TB329: Sigma-Delta Calibration Technique
PDF 275 KB 		Other
TB331: Using the HI7190 Serial Interface
PDF 270 KB 		Other
TB348: HI7190, HI7191 Negative Full Scale Error Versus Conversion Frequency
PDF 255 KB 		Other
AN9705: A Theoretical View of Coherent Sampling
PDF 287 KB 		Application Note
HI7190 EVK Manual
PDF 689 KB 		Manual - Development Tools
16 items

Design & Development

Software Downloads

Title
Type Date
PLC18018 - General Q3 Product Life Cycle Notice
PDF 388 KB 		End Of Life Notice
1 item

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

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    HI7190IBZ
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    		 SOICW Tube 114 Get Samples,
    HI7190IBZ-T
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    		SOICW Reel 1000
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