INA203-Q1 Monitor Datasheet

INA203-Q1 Datasheet, PDF, Equivalent


Part Number

INA203-Q1

Description

Voltage Output Current Shunt Monitor

Manufacture

etcTI

Total Page 29 Pages
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INA203-Q1
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INA203-Q1
SBOS539A – DECEMBER 2010 – REVISED APRIL 2016
INA203-Q1 Automotive Grade, –16 V to +80 V, Low- or High-Side, High-Speed, Voltage
Output Current Shunt Monitor With Dual Comparators and Reference
1 Features
1 Qualified for Automotive Applications
• Current Sense Amplifier
– Common-Mode Range: –16 V to +80 V
– Accuracy: 3.5% (Maximum) Over Temperature
– Bandwidth: 500 kHz
– Gain: 20 V/V
• Integrated Dual Comparators:
– Comparator 1 With Latch
– Comparator 2 With Optional Delay
• Quiescent Current: 1.8 mA
• Latch-Up Performance Meets 100 mA Per AEC-
Q100, Level I
• Packages: TSSOP-14
2 Applications
• Electric Power Steering (EPS) Systems
• Body Control Modules
• Brake Systems
• Electronic Stability Control (ESC) Systems
3 Description
The INA203-Q1 is a unidirectional current-shunt
monitor (also called a current sense amplifier) with
voltage output, dual comparators, and voltage
reference. The INA203-Q1 can sense drops across
shunts at common-mode voltages from –16 V to +80
V. The INA203-Q1 is available with 20-V/V gain with
up to 500-kHz bandwidth.
The INA203-Q1 incorporates two open-drain
comparators with internal 0.6-V references and also
provides a 1.2-V reference output. The comparator
references can be overridden by external inputs.
Comparator 1 includes a latching capability, and
Comparator 2 has a user-programmable delay.
The INA203-Q1 operates from a single 2.7 V to 18 V
supply. It is specified over the extended operating
temperature range of –40°C to +125°C.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
INA203-Q1
TSSOP (14)
5.00 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Load Supply
±16V to +80V
Basic Connections Schematic
RSHUNT
3m
Load
5V Supply
Current Shunt
Monitor Output
C BYPASS
0.01 F
VS
OUT
CMP1 IN-/0.6 REF
CMP1 IN+
CMP2 IN+
CMP2 IN-/0.6 REF
GND
INA203-Q1
x20
1.2V REF
VIN+
VIN-
1.2V REF OUT
CMP1 OUT
CMP2 OUT
CMP2 DELAY
CMP1RESET
Transparent/Reset
R PULL-UP
4.7 kŸ
R PULL-UP
4.7 kŸ
Optional Delay
Capacitor
0.2 F
Latch
Copyright © 2016, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.

INA203-Q1
INA203-Q1
SBOS539A – DECEMBER 2010 – REVISED APRIL 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Table..................................... 3
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ..................................... 4
7.2 ESD Ratings.............................................................. 4
7.3 Recommended Operating Conditions....................... 4
7.4 Thermal Information .................................................. 4
7.5 Electrical Characteristics: Current-Shunt Monitor .... 5
7.6 Electrical Characteristics: Comparator..................... 6
7.7 Electrical Characteristics: Reference ....................... 7
7.8 Electrical Characteristics: General........................... 7
7.9 Typical Characteristics .............................................. 8
8 Detailed Description ............................................ 12
8.1 Overview ................................................................. 12
8.2 Functional Block Diagram ....................................... 12
8.3 Feature Description................................................. 12
8.4 Device Functional Modes........................................ 14
9 Application and Implementation ........................ 15
9.1 Application Information............................................ 15
9.2 Typical Applications ................................................ 19
10 Power Supply Recommendations ..................... 21
11 Layout................................................................... 21
11.1 Layout Guidelines ................................................. 21
11.2 Layout Example .................................................... 21
12 Device and Documentation Support ................. 22
12.1 Community Resources.......................................... 22
12.2 Trademarks ........................................................... 22
12.3 Electrostatic Discharge Caution ............................ 22
12.4 Glossary ................................................................ 22
13 Mechanical, Packaging, and Orderable
Information ........................................................... 22
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Original (December 2010) to Revision A
Page
• Updated data sheet title, Features, Applications, and Description......................................................................................... 1
• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section,
Mechanical, Packaging, and Orderable Information section, Pin Configuration and Functions section,
Recommended Operating Conditions Table, and Thermal Information Table ....................................................................... 1
• Added Device Comparison Table........................................................................................................................................... 3
• Changed V+ to VS throughout ................................................................................................................................................ 4
• Changed MAX value 18 to (VS) + 0.3 for Comparator output pins......................................................................................... 4
• Changed MAX value 10 to (VS) up to 10 for 1.2-V REF and CMP2 DELAY pins .................................................................. 4
• Changed pin names in Absolute Maximum Ratings to show correct names ......................................................................... 4
• Added Operating Temperature to Absolute Maximum Ratings table ..................................................................................... 4
• Changed CMP2 IN– to CMP2 IN+ in Electrical Characteristics: Current-Shunt Monitor condition statement ....................... 5
• Changed CMP2 IN– to CMP2 IN+ in Electrical Characteristics: General condition statement .............................................. 7
• Updated Overview section.................................................................................................................................................... 12
• Deleted 10-pin device image ................................................................................................................................................ 12
• Changed text from "RFILT – 3%" to "RFILT + 3%" in 2nd paragraph of Input Filtering section ......................................... 16
• Changed Figure 35 caption .................................................................................................................................................. 16
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Copyright © 2010–2016, Texas Instruments Incorporated


Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community INA203-Q1 SBOS539A – DECEM BER 2010 – REVISED APRIL 2016 INA203- Q1 Automotive Grade, –16 V to +80 V, Low- or High-Side, High-Speed, Voltage Output Current Shunt Monitor With Dual Comparators and Reference 1 Features 1 Qualified for Automotive Applicatio ns • Current Sense Amplifier – Comm on-Mode Range: –16 V to +80 V – Acc uracy: 3.5% (Maximum) Over Temperature – Bandwidth: 500 kHz – Gain: 20 V/V • Integrated Dual Comparators: – C omparator 1 With Latch – Comparator 2 With Optional Delay • Quiescent Curr ent: 1.8 mA • Latch-Up Performance Me ets 100 mA Per AECQ100, Level I • Pac kages: TSSOP-14 2 Applications • Elec tric Power Steering (EPS) Systems • B ody Control Modules • Brake Systems Electronic Stability Control (ESC) S ystems 3 Description The INA203-Q1 is a unidirectional current-shunt monitor (also called a current sense amplifier) with voltage output, dual comparators, and voltage reference. T.
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