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BurrĆBrown Products
from Texas Instruments
INA203
INA203
INA203
INA203
INA204
INA205
SBOS393 – MARCH 2007
Unidirectional Measurement
Current-Shunt Monitor with Dual Comparators
FEATURES
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
PACKAGES: SO-14, TSSOP-14, MSOP-10
APPLICATIONS
NOTEBOOK COMPUTERS
CELL PHONES
TELECOM EQUIPMENT
AUTOMOTIVE
POWER MANAGEMENT
BATTERY CHARGERS
WELDING EQUIPMENT
INA203-INA205
VS 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 VIN+
13 VIN-
12 1.2V REF OUT
11 CMP1 OUT
10 CMP2 OUT
9 CMP2 DELAY
8 CMP1 RESET
SO-14, TSSOP-14
DESCRIPTION
The INA203, INA204, and INA205 are a family of
unidirectional, current-shunt monitors with voltage
output, dual comparators, and voltage reference. The
INA203, INA204, and INA205 can sense drops
across shunts at common-mode voltages from –16V
to +80V. The INA203, INA204, and INA205 are
available with three output voltage scales: 20V/V,
50V/V, and 100V/V, with up to 500kHz bandwidth.
The INA203, INA204, and INA205 also incorporate
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, INA204, and INA205 operate from a
single +2.7V to +18V supply. They are specified over
the extended operating temperature range of –40°C
to +125°C.
INA203-INA205
VS 1
OUT 2
CMP1 IN+ 3
CMP2 IN+ 4
GND 5
0.6V REF
MSOP-10
10 VIN+
9 VIN-
8 CMP1 OUT
7 CMP2 OUT
6 CMP1 RESET
DEVICE
INA203
INA204
INA205
GAIN
20V/V
50V/V
100V/V
RELATED PRODUCTS
FEATURES
Variant of INA203–INA205 Comparator 2 polarity
Current-shunt monitor with single Comparator
and VREF
Current-shunt monitor only
Current-shunt monitor with split stages for filter
options
PRODUCT
INA206–INA208
INA200–INA202
INA193–INA198
INA270–INA271
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
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 © 2007, Texas Instruments Incorporated

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INA203
INA204
INA205
SBOS393 – MARCH 2007
www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be
more susceptible to damage because very small parametric changes could cause the device not to meet its published
specifications.
ORDERING INFORMATION(1)
PRODUCT GAIN
INA203
20V/V
INA204
50V/V
INA205 100V/V
PACKAGE-
LEAD
SO-14 (2)
MSOP-10
TSSOP-14 (2)
SO-14 (2)
MSOP-10
TSSOP-14 (2)
SO-14 (2)
MSOP-10
TSSOP-14 (2)
PACKAGE
DESIGNATOR
D
DGS
PW
D
DGS
PW
D
DGS
PW
PACKAGE
MARKING
INA203A
BQN
INA203A
INA204A
BQO
INA204A
INA205A
BQP
INA205A
1.2V
REF OUT
X
X
X
X
X
X
EXTERNAL
COMP1 AND
COMP2
REF INPUTS
X
X
X
X
X
X
INTERNAL
COMP1 AND
COMP2
0.6V REF
X
X
X
X
X
X
X
X
X
COMP2
DELAY
PIN
X
X
X
X
X
X
(1) For the most current package and ordering information see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Available Q3, 2007.
ABSOLUTE MAXIMUM RATINGS(1)
Supply Voltage, V+
Current-Shunt Monitor Analog Inputs, VIN+and VIN–:
Differential (VIN+) – (VIN–)
Common-Mode
Comparator Analog Input and Reset Pins
Analog Output, Out Pin
Comparator Output, Out Pin
VREF and CMP2 Delay Pin
Input Current Into Any Pin
Operating Temperature
Storage Temperature
Junction Temperature
ESD Ratings:
Human Body Model (HBM)
Charged Device Model (CDM)
VALUE
18
–18 to +18
–16 to +80
GND – 0.3 to (V+) + 0.3
GND – 0.3 to (V+) + 0.3
GND – 0.3 to 18
GND – 0.3 to 10
5
–55 to +150
–65 to +150
+150
4000
1000
UNIT
V
V
V
V
V
V
V
mA
°C
°C
°C
V
V
(1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may
degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond
those specified is not supported.
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INA203
INA204
INA205
SBOS393 – MARCH 2007
ELECTRICAL CHARACTERISTICS: CURRENT-SHUNT MONITOR
Boldface limits apply over the specified temperature range: TA = –40°C to +125°C.
At TA = +25°C, VS = +12V, VCM = +12V, VSENSE = 100mV, RL = 10kto GND, RPULL-UP = 5.1keach connected from CMP1
OUT and CMP2 OUT to VS, and CMP1 IN+ = 1V and CMP2 IN– = GND, unless otherwise noted.
INA203, INA204, INA205
CURRENT-SHUNT MONITOR PARAMETERS
CONDITIONS
MIN TYP
MAX
UNIT
INPUT
Full-Scale Sense Input Voltage
Common-Mode Input Range
Common-Mode Rejection Ratio
Over Temperature
Offset Voltage, RTI(1)
+25°C to +125°C
VSENSE
VCM
CMRR
VOS
VSENSE = VIN+ – VIN–
VCM = –16V to +80V
VCM = +12V to +80V
0.15 (VS – 0.25)/Gain V
–16 80 V
80 100
dB
100 123
dB
±0.5
±2.5
mV
±3 mV
–40°C to +25°C
±3.5
mV
vs Temperature
vs Power Supply
Input Bias Current, VIN– Pin
OUTPUT (VSENSE 20mV)
Gain:
dVOS/dT
PSR
IB
TMIN to TMAX
VOUT = 2V, VCM = +18V, 2.7V
G
5 µV/°C
2.5 100 µV/V
±9 ±16 µA
INA203
20 V/V
INA204
50 V/V
INA205
100 V/V
Gain Error
Over Temperature
Total Output Error(2)
Over Temperature
Nonlinearity Error(3)
Output Impedance, Pin 2
Maximum Capacitive Load
VSENSE = 20mV to 100mV
VSENSE = 20mV to 100mV
VSENSE = 120mV, VS = +16V
VSENSE = 120mV, VS = +16V
VSENSE = 20mV to 100mV
RO
No Sustained Oscillation
±0.2
±0.75
±0.002
1.5
10
±1
±2
±2.2
±3.5
%
%
%
%
%
nF
OUTPUT (VSENSE < 20mV)(4)
INA203, INA204, INA205
INA203
INA204
INA205
INA203, INA204, INA205
VOLTAGE OUTPUT(5)
–16V VCM < 0V
0V VCM VS, VS = 5V
0V VCM VS, VS = 5V
0V VCM VS, VS = 5V
VS < VCM 80V
300 mV
0.4 V
1V
2V
300 mV
Output Swing to the Positive Rail
Output Swing to GND(6)
FREQUENCY RESPONSE
VIN– = 11V, VIN+ = 12V
VIN– = 0V, VIN+ = –0.5V
(V+) – 0.15
(VGND) + 0.004
(V+) – 0.25
(VGND) + 0.05
V
V
Bandwidth:
BW
INA203
INA204
INA205
Phase Margin
Slew Rate
CLOAD = 5pF
CLOAD = 5pF
CLOAD = 5pF
CLOAD < 10nF
SR
500 kHz
300 kHz
200 kHz
40 Degrees
1 V/µs
Settling Time (1%)
NOISE, RTI
VSENSE = 10mVPP to 100mVPP,
CLOAD = 5pF
2
µs
Output Voltage Noise Density
40 nV/Hz
(1) Offset is extrapolated from measurements of the output at 20mV and 100mV VSENSE.
(2) Total output error includes effects of gain error and VOS.
(3) Linearity is best fit to a straight line.
(4) For details on this region of operation, see the Accuracy Variations section in the Applications Information.
(5) See Typical Characteristic curve Positive Output Voltage Swing vs Output Current (Figure 8).
(6) Specified by design; not production tested.
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INA203
INA204
INA205
SBOS393 – MARCH 2007
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ELECTRICAL CHARACTERISTICS: COMPARATOR
Boldface limits apply over the specified temperature range: TA = –40°C to +125°C.
At TA = +25°C, VS = +12V, VCM = +12V, VSENSE = 100mV, RL = 10kto GND, and RPULL-UP = 5.1keach connected from
CMP1 OUT and CMP2 OUT to VS, unless otherwise noted.
INA203, INA204, INA205
COMPARATOR PARAMETERS
CONDITIONS
MIN TYP MAX UNIT
OFFSET VOLTAGE
Offset Voltage
Comparator Common-Mode Voltage = Threshold Voltage
2 mV
Offset Voltage Drift, Comparator 1
±2 µV/°C
Offset Voltage Drift, Comparator 2
+5.4
µV/°C
Threshold
Over Temperature
TA = +25°C
590 600 610 mV
586 614 mV
Hysteresis(1), CMP1
Hysteresis(1), CMP2
INPUT BIAS CURRENT(2)
TA = –40°C to +85°C
TA = –40°C to +85°C
–8 mV
8 mV
CMP1 IN+, CMP2 IN+
0.005
10 nA
vs Temperature
15 nA
INPUT IMPEDANCE
Pins 3 and 6 (14-pin packages only)
10 k
INPUT RANGE
CMP1 IN+ and CMP2 IN+
Pins 3 and 6 (14-pin packages only)(3)
OUTPUT
0V to VS – 1.5V
0V to VS – 1.5V
V
V
Large-Signal Differential Voltage Gain
High-Level Output Current
Low-Level Output Voltage
RESPONSE TIME(4)
CMP VOUT 1V to 4V, RL 15kConnected to 5V
VID = 0.4V, VOH = VS
VID = –0.6V, IOL = 2.35mA
200
0.0001
220
V/mV
1 µA
300 mV
Comparator 1
Comparator 2
RESET
RL to 5V, CL = 15pF, 100mV Input Step with 5mV Overdrive
RL to 5V, CL = 15pF, 100mV Input Step with 5mV Overdrive,
CDELAY Pin Open
1.3
1.3
µs
µs
RESET Threshold(5)
1.1 V
Logic Input Impedance
2 M
Minimum RESET Pulse Width
1.5 µs
RESET Propagation Delay
3 µs
Comparator 2 Delay Equation(6)
Comparator 2 Delay
tD
CDELAY = 0.1µF
CDELAY = tD/5
0.5
µF
s
(1) Hysteresis refers to the threshold (the threshold specification applies to a rising edge of a noninverting input) of a falling edge on the
noninverting input of the comparator; refer to Figure 1.
(2) Specified by design; not production tested.
(3) See the Comparator Maximum Input Voltage Range section in the Applications Information.
(4) The comparator response time specified is the interval between the input step function and the instant when the output crosses 1.4V.
(5) The CMP1 RESET input has an internal 2M(typical) pull-down. Leaving the CMP1 RESET open results in a LOW state, with
transparent comparator operation.
(6) The Comparator 2 delay applies to both rising and falling edges of the comparator output.
VTHRESHOLD
0.592
0.6
VTHRESHOLD
0.6 0.608
Input Voltage
Input Voltage
Hysteresis = VTHRESHOLD - 8mV
a) CMP1
Hysteresis = VTHRESHOLD - 8mV
b) CMP2
Figure 1. Comparator Hysteresis
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INA203
INA204
INA205
SBOS393 – MARCH 2007
ELECTRICAL CHARACTERISTICS: REFERENCE
Boldface limits apply over the specified temperature range: TA = –40°C to +125°C.
At TA = +25°C, VS = +12V, VCM = +12V, VSENSE = 100mV, RL = 10kto GND, and RPULL-UP = 5.1keach connected from
CMP1 OUT and CMP2 OUT to VS, unless otherwise noted.
INA203, INA204, INA205
REFERENCE PARAMETERS
CONDITIONS
MIN TYP MAX UNIT
REFERENCE VOLTAGE
1.2VREFOUT Output Voltage
1.188 1.2 1.212
V
Reference Drift
dVOUT/dT
TA = –40°C to +85°C
40 100 ppm/°C
0.6VREF Output Voltage (Pins 3 and 6 of 14-pin packages only)
0.6 V
Reference Drift
dVOUT/dT
TA = –40°C to +85°C
40 100 ppm/°C
LOAD REGULATION
dVOUT/dILOAD
Sourcing
0mA < ISOURCE < 0.5mA
0.4 2 mV/mA
Sinking
0mA < ISINK < 0.5mA
0.4 mV/mA
LOAD CURRENT
ILOAD
1 mA
LINE REGULATION
dVOUT/dVS
2.7V < VS < 18V
30 µV/V
CAPACITIVE LOAD
Reference Output Maximum Capacitive Load
No Sustained Oscillations
10
nF
OUTPUT IMPEDANCE
Pins 3 and 6 of 14-Pin Packages Only
10 k
ELECTRICAL CHARACTERISTICS: GENERAL
Boldface limits apply over the specified temperature range: TA = –40°C to +125°C.
All specifications at TA = +25°C, VS = +12V, VCM = +12V, VSENSE = 100mV, RL = 10kto GND, RPULL-UP = 5.1keach
connected from CMP1 OUT and CMP2 OUT to VS, and CMP1 IN+ = 1V and CMP2 IN– = GND, unless otherwise noted.
INA203, INA204, INA205
GENERAL PARAMETERS
CONDITIONS
MIN
TYP
MAX
UNIT
POWER SUPPLY
Operating Power Supply
Quiescent Current
Over Temperature
Comparator Power-On Reset Threshold(1)
VS
IQ
VOUT = 2V
VSENSE = 0mV
+2.7
+18 V
1.8 2.2 mA
2.8 mA
1.5 V
TEMPERATURE
Specified Temperature Range
–40
+125
°C
Operating Temperature Range
–55
+150
°C
Storage Temperature Range
–65
+150
°C
Thermal Resistance
MSOP-10 Surface-Mount
θJA
200 °C/W
SO-14, TSSOP-14 Surface-Mount
150 °C/W
(1) The INA203, INA204, and INA205 are designed to power-up with the comparator in a defined reset state as long as CMP1 RESET is
open or grounded. The comparator will be in reset as long as the power supply is below the voltage shown here. The comparator
assumes a state based on the comparator input above this supply voltage. If CMP1 RESET is high at power-up, the comparator output
comes up high and requires a reset to assume a low state, if appropriate.
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