INA203-Q1_15 Datasheet, PDF (1/24 Pages) Texas Instruments – Unidirectional Measurement Current-Shunt Monitor with Dual Comparators

INA203-Q1
www.ti.com
Unidirectional Measurement
Current-Shunt Monitor with Dual Comparators
Check for Samples: INA203-Q1
SBOS539 – DECEMBER 2010
FEATURES
1
•2 Qualified for Automotive Applications
• Complete Current Sense Solution
• Dual Comparators:
– Comparator 1 with Latch
– Comparator 2 with Optional Delay
• Common-Mode Range: –16V to +80V
• High Accuracy: 3.5% (max) Over Temperature
• Bandwidth: 500kHz
• Quiescent Current: 1.8mA
• Latch-Up Performance Meets 100 mA Per
AEC-Q100, Level I
• Packages: SO-14, TSSOP-14, MSOP-10
APPLICATIONS
• Automotive
• Power Management
• Battery Chargers
V_S 1
OUT 2
CMP1 IN-/0.6V REF 3
CMP1 IN+ 4
CMP2 IN+ 5
CMP2 IN-/0.6V REF 6
GND 7
1.2V REF
14 V_IN+
13 V_IN-
12 1.2V REF OUT
11 CMP1 OUT
10 CMP2 OUT
9 CMP2 DELAY
8 CMP1 RESET
DESCRIPTION
The INA203-Q1 is a unidirectional current-shunt
monitor with voltage output, dual comparators, and
voltage reference. The INA203-Q1 can sense drops
across shunts at common-mode voltages from –16V
to +80V. The INA203-Q1 is available with three
output voltage scales: 20V/V, 50V/V, and 100V/V,
with up to 500kHz bandwidth.
The INA203-Q1also incorporates two open-drain
comparators with internal 0.6V references. On 14-pin
versions, the comparator references can be
overridden by external inputs. Comparator 1 includes
a latching capability, and Comparator 2 has a
user-programmable delay. 14-pin versions also
provide a 1.2V reference output.
The INA203-Q1 operates from a single +2.7V to
+18V supply. It is specified over the extended
operating temperature range of –40°C to +125°C.
V_S 1
OUT 2
CMP1 IN+ 3
CMP2 IN+ 4
GND 5
0.6V REF
10 V_IN+
9 V_IN-
8 CMP1 OUT
7 CMP2 OUT
6 CMP1 RESET
RELATED PRODUCTS
FEATURES
PRODUCT
Variant of INA203-Q1–INA205 Comparator 2
polarity
INA206–INA208
Current-shunt monitor with single Comparator
and V_REF
Current-shunt monitor only
INA200–INA202
INA193–INA198
Current-shunt monitor with split stages for filter
options
INA270–INA271
1
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2010, Texas Instruments Incorporated