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HI7191IPZ Datasheet(PDF) 1 Page - Intersil Corporation |
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HI7191IPZ Datasheet(HTML) 1 Page - Intersil Corporation |
1 / 25 page 1 ® FN4138.8 HI7191 24-Bit, High Precision, Sigma Delta A/D Converter The Intersil HI7191 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 auto-calibrate 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 specs. The HI7191 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 • 20-Bit Resolution with No Missing Code • 0.0015% 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 Related Literature • Technical Brief TB363 “Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices (SMDs)” • TB348 “HI7190/1 Negative Full Scale Error vs Conversion Frequency” • AN9504 “A Brief Intro to Sigma Delta Conversion” • TB329 “Intersil Sigma Delta Calibration Technique” • AN9505 “Using the HI7190 Evaluation Kit” • TB331 “Using the HI7190 Serial Interface” • AN9527 “Interfacing HI7190 to a Microcontroller” • AN9532 “Using HI7190 in a Multiplexed System” • AN9601 “Using HI7190 with a Single +5V Supply” Ordering Information PART NUMBER PART MARKING TEMP. RANGE (°C) PACKAGE PKG. DWG. # HI7191IP HI7191IP -40 to 85 20 Ld PDIP E20.3 HI7191IPZ (See Note) HI7191IPZ -40 to 85 20 Ld PDIP* (Pb-free) E20.3 HI7191IB HI7191IB -40 to 85 20 Ld SOIC M20.3 HI7191IBZ (See Note) HI7191IBZ -40 to 85 20 Ld SOIC (Pb-free) M20.3 HI7191IBZ-T (See Note) HI7191IBZ -40 to 85 20 Ld SOIC Tape and Reel (Pb-free) M20.3 HI7190EVAL Evaluation Kit NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. *Pb-free PDIPs can be used for through hole wave solder processing only. They are not intended for use in Reflow solder processing applications. Data Sheet June 1, 2006 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2003, 2005, 2006. All Rights Reserved All other trademarks mentioned are the property of their respective owners. |
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