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HI7190IP

Description
1-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDIP20
Categorysemiconductor    logic   
File Size1MB,25 Pages
ManufacturerIntersil ( Renesas )
Websitehttp://www.intersil.com/cda/home/
Download Datasheet Parametric View All

HI7190IP Overview

1-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDIP20

HI7190IP Parametric

Parameter NameAttribute value
Number of functions1
Number of terminals20
Maximum operating temperature85 Cel
Minimum operating temperature-40 Cel
Rated supply voltage5 V
Maximum linear error0.0015 %
Maximum limit analog input voltage5 V
Minimum limit analog input voltage-5 V
Processing package descriptionROHS COMPLIANT, PLASTIC, MS-001AD, DIP-20
Lead-freeYes
EU RoHS regulationsYes
stateACTIVE
packaging shapeRECTANGULAR
Package SizeIN-LINE
Terminal formTHROUGH-HOLE
Terminal spacing2.54 mm
terminal coatingMATTE TIN
Terminal locationDUAL
Packaging MaterialsPLASTIC/EPOXY
Temperature levelINDUSTRIAL
Rated negative supply voltage-5 V
Output formatSERIAL
Type of converterDELTA-SIGMA
Number of digits24
Output bit encodingBINARY, OFFSET BINARY, 2S COMPLEMENT BINARY
Number of analog channels1
DATASHEET
HI7190
24-Bit, High Precision, Sigma Delta A/D Converter
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 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 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.
FN3612
Rev 10.00
June 27, 2006
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
• Process Control and Measurement
• Industrial Weight Scales
• Part Counting Scales
• Laboratory Instrumentation
Pinout
HI7190
20 LD SOIC, PDIP
TOP VIEW
SCLK
SDO
SDIO
CS
DRDY
DGND
AV
SS
V
RLO
V
RHI
1
2
3
4
5
6
7
8
9
20 MODE
19 SYNC
18 RESET
17 OSC
1
16 OSC
2
15 DV
DD
14 AGND
13 AV
DD
12 V
INHI
11 V
INLO
• Seismic Monitoring
• Magnetic Field Monitoring
• Additional Reference Literature
- Technical Brief, TB348 “HI7190/1 Negative Full Scale
Error vs Conversion Frequency”
- Application Note, AN9504 “A Brief Intro to Sigma Delta
Conversion”
- Technical Brief, TB329 “Intersil Sigma Delta Calibration
Technique”
- Application Note, AN9505 “Using the HI7190 Evaluation
Kit”
- Technical Brief, TB331 “Using the HI7190 Serial
Interface”
- Application Note, AN9527 “Interfacing HI7190 to a
Microcontroller”
- Application Note, AN9532 “Using HI7190 in a
Multiplexed System”
- Application Note, AN9601 “Using HI7190 with a Single
+5V Supply”
V
CM
10
FN3612 Rev 10.00
June 27, 2006
Page 1 of 25
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