TI INA214AIDCKR Voltage output, high or low side measurement, bi-directional zero-drift series current shunt monitor Datasheet

INA210, INA211
INA212, INA213
INA214
SC70
Package
www.ti.com............................................................................................................................................................... SBOS437A – MAY 2008 – REVISED JUNE 2008
Voltage Output, High or Low Side Measurement,
Bi-Directional Zerø-Drift Series
CURRENT SHUNT MONITOR
FEATURES
APPLICATIONS
• WIDE COMMON-MODE RANGE: –0.3V to 26V
• OFFSET VOLTAGE: ±35µV (Max, INA210)
(Enables shunt drops of 10mV full-scale)
• ACCURACY
– ±1% Gain Error (Max over temperature)
– 0.5µV/°C Offset Drift (Max)
– 10ppm/°C Gain Drift (Max)
• CHOICE OF GAINS:
– INA210: 200V/V
– INA211: 500V/V
– INA212: 1000V/V
– INA213: 50V/V
– INA214: 100V/V
• QUIESCENT CURRENT: 100µA (max)
• SC70 PACKAGE
•
•
•
•
•
•
1
2
NOTEBOOK COMPUTERS
CELL PHONES
TELECOM EQUIPMENT
POWER MANAGEMENT
BATTERY CHARGERS
WELDING EQUIPMENT
DESCRIPTION
The INA210, INA211, INA212, INA213, and INA214
are voltage output current shunt monitors that can
sense drops across shunts at common-mode
voltages from –0.3V to 26V, independent of the
supply voltage. Five fixed gains are available: 50V/V,
100V/V, 200V/V, 500V/V, or 1000V/V. The low offset
of the Zerø-Drift architecture enables current sensing
with maximum drops across the shunt as low as
10mV full-scale.
These devices operate from a single +2.7V to +26V
power supply, drawing a maximum of 100µA of
supply current. All versions are specified over the
extended operating temperature range (–40°C to
+125°C), and offered in an SC70 package.
REF
GND
+2.7V to +26V
RSHUNT
Supply
Reference
Voltage
INA21x
R3
R2
R4
IN-
IN+
V+
CBYPASS
0.01mF
to
0.1mF
Output
OUT
R1
Load
PRODUCT
GAIN
R3 and R4
R1 and R2
INA210
INA211
INA212
INA213
INA214
200
500
1000
50
100
5kW
2kW
1kW
20kW
10kW
1MW
1MW
1MW
1MW
1MW
1
2
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 © 2008, Texas Instruments Incorporated
INA210,, INA211
INA212, INA213
INA214
SBOS437A – MAY 2008 – REVISED JUNE 2008............................................................................................................................................................... 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.
PACKAGE/ORDERING INFORMATION (1)
(1)
PRODUCT
GAIN
PACKAGE
PACKAGE
DESIGNATOR
PACKAGE
MARKING
INA210
200V/V
SC70-6
DCK
CET
INA211
500V/V
SC70-6
DCK
CEU
INA212
1000V/V
SC70-6
DCK
CEV
INA213
50V
SC70-6
DCK
CFT
INA214
100V/V
SC70-6
DCK
CFV
For the most current package and ordering information, see the Package Option Addendum located at the end of this data sheet, or
refer to our web site at www.ti.com.
ABSOLUTE MAXIMUM RATINGS (1)
Over operating free-air temperature range, unless otherwise noted.
Supply Voltage
Analog Inputs,
VIN+, VIN– (2)
Differential (VIN+)–(VIN–)
Common-Mode
(3)
REF Input
Output
(3)
INA210, INA211,
INA212, INA213, INA214
UNIT
+26
V
–26 to +26
V
GND–0.3 to +26
V
GND–0.3 to (V+)+0.3
V
GND–0.3 to (V+)+0.3
V
5
mA
Operating Temperature
–55 to +150
°C
Storage Temperature
–65 to +150
°C
Junction Temperature
+150
°C
Human Body Model (HBM)
4000
V
Charged-Device Model (CDM)
1000
V
Machine Model (MM)
200
V
Input Current into Any Pin (3)
ESD Ratings:
(1)
(2)
(3)
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 implied.
VIN+ and VIN– are the voltages at the IN+ and IN– pins, respectively.
Input Voltage at any pin may exceed the voltage shown if the current at that pin is limited to 5mA.
PIN CONFIGURATION
DCK PACKAGE
SC70-6
(TOP VIEW)
2
Submit Documentation Feedback
REF
1
6
OUT
GND
2
5
IN-
V+
3
4
IN+
Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): INA210 INA211 INA212 INA213 INA214
INA210,, INA211
INA212, INA213
INA214
www.ti.com............................................................................................................................................................... SBOS437A – MAY 2008 – REVISED JUNE 2008
ELECTRICAL CHARACTERISTICS
Boldface limits apply over the specified temperature range, TA = –40°C to +125°C.
At TA = +25°C, VSENSE = VIN+ – VIN–.
INA210, INA213 and INA214: VS = +5V, VIN+ = 12V, VREF = VS/2, unless otherwise noted.
INA211 and INA212: VS = +12V, VIN+ = 12V, VREF = VS/2, unless otherwise noted.
INA210, INA211,
INA212, INA213, INA214
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
26
V
INPUT
Common-Mode Input Range
Common-Mode Rejection
VCM
CMR
-0.3
VIN+ = 0V to +26V, VSENSE = 0mV
INA210, INA211, INA212,
INA214
INA213
Offset Voltage, RTI (1)
VOS
105
140
dB
100
120
dB
VSENSE = 0mV
±0.55
±35
µV
INA213
±5
±100
µV
INA214
±1
±60
µV
0.1
0.5
µV/°C
±0.1
±10
µV/V
28
35
µA
INA210, INA211, INA212
vs Temperature
dVOS/dT
vs Power Supply
PSR
Input Bias Current
Input Offset Current
VS = +2.7V to +18V, VIN+ = +18V,
VSENSE = 0mV
IB
VSENSE = 0mV
IOS
VSENSE = 0mV
15
±0.02
µA
200
V/V
OUTPUT
Gain, INA210
G
INA211
500
VV
INA212
1000
V/V
INA213
50
V/V
INA214
100
Gain Error
VSENSE = –5mV to 5mV
vs Temperature
V/V
±0.02
±1
%
3
10
ppm/°C
Nonlinearity Error
VSENSE = –5mV to 5mV
±0.01
%
Maximum Capacitive Load
No sustained oscillation
1
nF
VOLTAGE OUTPUT (2)
RL = 10kΩ to GND
Swing to V+ Power Supply Rail
Swing to GND
(V+)-0.05
(V+)-0.2
V
(VGND)+0.005
(VGND)+0.05
V
FREQUENCY RESPONSE
Bandwidth
GBW
Slew Rate
SR
CLOAD = 10pF
14
kHz
0.4
V/µs
25
nV/√Hz
NOISE, RTI (1)
Voltage Noise Density
POWER SUPPLY
Operating Voltage Range
Quiescent Current
VS
IQ
+2.7
VSENSE = 0mV
65
Over Temperature
+26
V
100
µA
115
µA
TEMPERATURE RANGE
Specified Range
–40
+125
°C
Operating Range
–55
+150
°C
Thermal Resistance
θ JA
SC70
(1)
(2)
250
°C/W
RTI = referred-to-input.
See Typical Characteristic curve, Output Voltage Swing vs Output Current (Figure 10).
Copyright © 2008, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Link(s): INA210 INA211 INA212 INA213 INA214
3
INA210,, INA211
INA212, INA213
INA214
SBOS437A – MAY 2008 – REVISED JUNE 2008............................................................................................................................................................... www.ti.com
TYPICAL CHARACTERISTICS
The INA210 is used for typical characteristics at TA = +25°C, VS = +5V, VIN+ = 12V, and VREF = VS/2, unless otherwise noted.
INPUT OFFSET VOLTAGE
PRODUCTION DISTRIBUTION
OFFSET VOLTAGE
vs TEMPERATURE
100
80
Population
Offset Voltage (mV)
60
40
20
0
-20
-40
-60
30
35
20
25
15
5
10
0
-5
-10
-15
-20
-25
-30
-35
-80
-100
-50
-25
0
25
50
75
100
125
150
Temperature (°C)
Offset Voltage (mV)
Figure 1.
Figure 2.
COMMON-MODE REJECTION
PRODUCTION DISTRIBUTION
COMMON-MODE REJECTION RATIO
vs TEMPERATURE
5
4
Population
CMRR (mV/V)
3
2
1
0
-1
-2
-3
-4
-5.0
-4.5
-4.0
-3.5
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
-5
-50
-25
0
25
50
75
100
125
150
100
125
150
Temperature (°C)
Common-Mode Rejection Ratio (mV/V)
Figure 3.
Figure 4.
GAIN ERROR
PRODUCTION DISTRIBUTION
GAIN ERROR
vs TEMPERATURE
1.0
20 Typical Units Shown
0.8
Population
Gain Error (%)
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-1.0
-0.9
-0.8
-0.7
-0.6
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
-0.8
Gain Error (%)
-1.0
-50
-25
0
25
Figure 5.
4
Submit Documentation Feedback
50
75
Temperature (°C)
Figure 6.
Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): INA210 INA211 INA212 INA213 INA214
INA210,, INA211
INA212, INA213
INA214
www.ti.com............................................................................................................................................................... SBOS437A – MAY 2008 – REVISED JUNE 2008
TYPICAL CHARACTERISTICS (continued)
The INA210 is used for typical characteristics at TA = +25°C, VS = +5V, VIN+ = 12V, and VREF = VS/2, unless otherwise noted.
GAIN
vs FREQUENCY
POWER-SUPPLY REJECTION RATIO
vs FREQUENCY
160
70
INA211
60
140
50
120
|PSRR| (dB)
Gain (dB)
INA212
40
30
INA213
INA214
INA210
20
100
80
60
VS = +5V + 250mV Sine Disturbance
VCM = 0V
VDIF = Shorted
VREF = 2.5V
40
10
VCM = 0V
VDIF = 15mVPP Sine
0
-10
10
100
20
0
1k
10k
100k
1M
1
10M
100
10
Figure 8.
COMMON-MODE REJECTION RATIO
vs FREQUENCY
OUTPUT VOLTAGE SWING
vs OUTPUT CURRENT
Output Voltage Swing (V)
140
|CMRR| (dB)
120
100
80
60
VS = +5V
CM
V = 1V Sine
VDIF = Shorted
VREF = 2.5V
20
0
1
10
100
1k
10k
100k
V+
(V+) - 0.5
(V+) - 1
(V+) - 1.5
(V+) - 2
(V+) - 2.5
(V+) - 3
100k
VS = 5V to 26V
VS = 2.7V
to 26V
VS = 2.7V
GND + 3
GND + 2.5
GND + 2
GND + 1.5
GND + 1
GND + 0.5
GND
1M
TA = -40C
TA = +25C
TA = +125C
VS = 2.7V to 26V
0
5
10
Frequency (Hz)
15
20
25
30
35
40
Output Current (mA)
Figure 9.
Figure 10.
INPUT BIAS CURRENT vs COMMON-MODE VOLTAGE
with SUPPLY VOLTAGE = +5V
INPUT BIAS CURRENT vs COMMON-MODE VOLTAGE
with SUPPLY VOLTAGE = 0V (Shutdown)
50
30
25
40
IB+, IB-, VREF = 0V
Input Bias Current (mA)
Input Bias Current (mA)
10k
Figure 7.
160
40
1k
Frequency (Hz)
Frequency (Hz)
30
20
IB+, IB-, VREF = 2.5V
10
0
20
IB+, VREF = 2.5V
15
10
5
IB+, IB-, VREF = 0V
and
IB-, VREF = 2.5V
0
-10
-5
0
5
10
15
20
25
30
0
5
10
15
20
Common-Mode Voltage (V)
Common-Mode Voltage (V)
Figure 11.
Figure 12.
Copyright © 2008, Texas Instruments Incorporated
25
Submit Documentation Feedback
Product Folder Link(s): INA210 INA211 INA212 INA213 INA214
30
5
INA210,, INA211
INA212, INA213
INA214
SBOS437A – MAY 2008 – REVISED JUNE 2008............................................................................................................................................................... www.ti.com
TYPICAL CHARACTERISTICS (continued)
The INA210 is used for typical characteristics at TA = +25°C, VS = +5V, VIN+ = 12V, and VREF = VS/2, unless otherwise noted.
INPUT BIAS CURRENT
vs TEMPERATURE
QUIESCENT CURRENT
vs TEMPERATURE
35
100
90
Quiescent Current (mA)
Input Bias Current (mA)
30
25
20
15
10
5
80
70
60
50
40
30
20
10
0
-50
-25
0
25
50
75
100
125
0
-50
150
0
-25
Temperature (°C)
100
INPUT-REFERRED VOLTAGE NOISE
vs FREQUENCY
0.1Hz to 10Hz VOLTAGE NOISE
(Referred-to-Input)
INA214
INA211
10
INA210
VS = ±2.5V
VREF = 0V
VIN-, VIN+ = 0V
100
125
150
INA212
Referred-to-Input
Voltage Noise (200nV/div)
Input-Reffered Voltage Noise (nV/Öz)
75
Figure 14.
INA213
10
50
Figure 13.
100
1
25
Temperature (°C)
1k
10k
VS = ±2.5V
VCM = 0V
VDIF = 0V
VREF = 0V
Time (1s/div)
100k
Figure 16.
STEP RESPONSE
(10mVPP Input Step)
COMMON-MODE VOLTAGE
TRANSIENT RESPONSE
2VPP Output Signal
10mVPP Input Signal
Time (100ms/div)
Common Voltage Step
0V
Output Voltage
0V
Time (50ms/div)
Figure 17.
6
Submit Documentation Feedback
Output Voltage (40mV/div)
Figure 15.
Common-Mode Voltage (1V/div)
Input Voltage
(5mV/diV)
Output Voltage
(0.5V/diV)
Frequency (Hz)
Figure 18.
Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): INA210 INA211 INA212 INA213 INA214
INA210,, INA211
INA212, INA213
INA214
www.ti.com............................................................................................................................................................... SBOS437A – MAY 2008 – REVISED JUNE 2008
TYPICAL CHARACTERISTICS (continued)
The INA210 is used for typical characteristics at TA = +25°C, VS = +5V, VIN+ = 12V, and VREF = VS/2, unless otherwise noted.
INVERTING DIFFERENTIAL INPUT OVERLOAD
NONINVERTING DIFFERENTIAL INPUT OVERLOAD
Noninverting Input Overload
2V/div
2V/div
Inverting Input Overload
Output
Output
0V
0V
VS = 5V, VCM = 12V, VREF = 2.5V
VS = 5V, VCM = 12V, VREF = 2.5V
Time (250ms/div)
Time (250ms/div)
Figure 19.
Figure 20.
START-UP RESPONSE
BROWNOUT RECOVERY
Supply Voltage
1V/div
1V/div
Supply Voltage
Output Voltage
Output Voltage
0V
VS = 5V, 1kHz Step with VDIFF = 0V, VREF = 2.5V
Time (100ms/div)
0V
VS = 5V, 1kHz Step with VDIFF = 0V, VREF = 2.5V
Time (100ms/div)
Figure 21.
Copyright © 2008, Texas Instruments Incorporated
Figure 22.
Submit Documentation Feedback
Product Folder Link(s): INA210 INA211 INA212 INA213 INA214
7
INA210,, INA211
INA212, INA213
INA214
SBOS437A – MAY 2008 – REVISED JUNE 2008............................................................................................................................................................... www.ti.com
APPLICATION INFORMATION
BASIC CONNECTIONS
Figure 23 shows the basic connections of the
INA210-INA214. The input pins, IN+ and IN–, should
be connected as closely as possible to the shunt
resistor to minimize any resistance in series with the
shunt resistance.
Load
UNIDIRECTIONAL OPERATION
REF
GND
+2.7V to +26V
RSHUNT
Supply
Reference
Voltage
Alternatively, there are applications that must
measure current over a wide dynamic range that can
take advantage of the low offset on the low end of the
measurement. Most often, these applications can use
the lower gain INA213 or INA214 to accommodate
larger shunt drops on the upper end of the scale. For
instance, an INA213 operating on a 3.3V supply
could easily handle a full-scale shunt drop of 60mV,
with only 60µV of offset.
INA21x
OUT
R1
R3
R2
R4
Output
IN-
IN+
V+
CBYPASS
0.01mF
to
0.1mF
Figure 23. Typical Application
Power-supply bypass capacitors are required for
stability. Applications with noisy or high impedance
power supplies may require additional decoupling
capacitors to reject power-supply noise. Connect
bypass capacitors close to the device pins.
POWER SUPPLY
The input circuitry of the INA210-INA214 can
accurately measure beyond its power-supply voltage,
V+. For example, the V+ power supply can be 5V,
whereas the load power supply voltage can be as
high as +26V. However, the output voltage range of
the OUT terminal is limited by the voltages on the
power-supply pin. Note also that the INA210-INA214
can withstand the full –0.3V to +26V in the input pins,
regardless of whether the device has power applied
or not.
Unidirectional operation allows the INA210-INA214 to
measure currents through a resistive shunt in one
direction. The most frequent case of unidirectional
operation sets the output at ground by connecting the
REF pin to ground. In unidirectional applications
where the highest possible accuracy is desirable at
very low inputs, bias the REF pin to a convenient
value above 50mV to get the device output swing into
the linear range for zero inputs.
A less frequent case of unipolar output biasing is to
bias the output by connecting the REF pin to the
supply; in this case, the quiescent output for zero
input is at quiescent supply. This configuration would
only respond to negative currents (inverted voltage
polarity at the device input).
BIDIRECTIONAL OPERATION
Bidirectional operation allows the INA210-INA214 to
measure currents through a resistive shunt in two
directions. In this case, the output can be set
anywhere within the limits of what the reference
inputs allow (that is, between 0V to V+). Typically, it
is set at half-scale for equal range in both directions.
In some cases, however, it is set at a voltage other
than half-scale when the bidirectional current is
nonsymmetrical.
The quiescent output voltage is set by applying
voltage to the reference input. Under zero differential
input conditions the output assumes the same voltage
as is applied to the reference input.
SELECTING RS
The
zero-drift
offset
performance
of
the
INA210-INA214 offers several benefits. Most often,
the primary advantage of the low offset characteristic
enables lower full-scale drops across the shunt. For
example, non-zero-drift current shunt monitors
typically require a full-scale range of 100mV.
The INA210-INA214 series gives equivalent accuracy
at a full-scale range on the order of 10mV. This
accuracy reduces shunt dissipation by an order of
magnitude with many additional benefits.
8
Submit Documentation Feedback
Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): INA210 INA211 INA212 INA213 INA214
INA210,, INA211
INA212, INA213
INA214
www.ti.com............................................................................................................................................................... SBOS437A – MAY 2008 – REVISED JUNE 2008
INPUT FILTERING
An obvious and straightforward location for filtering is
at the output of the INA210-INA214; however, this
location negates the advantage of the low output
impedance of the internal buffer. The only other
option for filtering is at the input pins of the
INA210-INA214; this location requires consideration
of the ±30% tolerance of the input impedance.
Figure 24 shows a filter placed at the input pins.
RSHUNT << RFILTER
LOAD
VSUPPLY
RFILTER < 10W
RFILTER < 10W
Reference
Voltage
SHUTTING DOWN THE INA210-INA214
SERIES
While the INA210-INA214 series does not have a
shutdown pin, its low power consumption allows
powering from the output of a logic gate or transistor
switch that can turn on and turn off the
INA210-INA214 power-supply quiescent current.
However, in current shunt monitoring applications.
there is also a concern for how much current is
drained from the shunt circuit in shutdown conditions.
Evaluating this current drain involves considering the
simplified schematic of the INA210-INA214 in
shutdown mode shown in Figure 25.
CFILTER
REF
INA21x
GND
R1
R3
INf-3dB
+2.7V to +26V
f-3dB =
IN+
V+
R2
1
2p (2 RFILTER) CFILTER
RSHUNT
Supply
Reference
Voltage
Output
OUT
REF
INA21x
GND
1MW
R3
R2
R4
Load
Output
OUT
IN-
R4
CBYPASS
0.01mF
to
0.1mF
Shutdown
Control
CBYPASS
Figure 24. Input Filter
Using the lowest possible resistor values minimizes
both the initial shift in gain and effects of tolerance.
The effect on initial gain is given by Equation 1:
GainError% = 100 - [100 ´ {R/(R + RFILT)}]
(1)
Where R is the value for R3 or R4 from Table 1 for the
model is in question.
Table 1.
PRODUCT
GAIN
R3 AND R4
INA210
200
5kΩ
INA211
500
2kΩ
INA212
1000
1kΩ
INA213
50
20kΩ
INA214
100
10kΩ
Using an INA212, for example, the total effect on gain
error can be calculated by replacing the R with
1kΩ− 30%, (or 700Ω) or 1kΩ+ 30% (or 1.3kΩ). The
tolerance extremes of RFILT can also be inserted into
the equation. If a pair of 100Ω, 1% resistors are used
on the inputs, the initial gain error is approximately
2%.
Copyright © 2008, Texas Instruments Incorporated
IN+
V+
PRODUCT
R3 and R4
INA210
INA211
INA212
INA213
INA214
5kW
2kW
1kW
20kW
10kW
NOTE: 1MW paths from shunt inputs to reference and INA21x outputs.
Figure 25. Basic Circuit for Shutting Down
INA210-INA214 with Grounded Reference
Note that there is typically slightly more than 1MΩ
impedance (from the combination of 1MΩ feedback
and 5kΩ input resistors) from each input of the
INA210-INA214 to the OUT pin and to the REF pin.
The amount of current flowing through these pins
depends on the respective ultimate connection. For
example, if the REF pin is grounded, the calculation
of the effect of the 1MΩ impedance from the shunt to
ground is straightforward. However, if the reference
or op amp is powered while the INA210-INA214 is
shut down, the calculation is direct; instead of
assuming 1MΩ to ground, however, assume 1MΩ to
the reference voltage. If the reference or op amp is
also shut down, some knowledge of the reference or
op amp output impedance under shutdown conditions
is required. For instance, if the reference source
behaves as an open circuit when it is unpowered,
little or no current flows through the 1MΩ path.
Regarding the 1MΩ path to the output pin, the output
stage of a disabled INA210-INA214 does constitute a
good path to ground; consequently, this current is
directly proportional to a shunt common-mode voltage
impressed across a 1MΩ resistor.
Submit Documentation Feedback
Product Folder Link(s): INA210 INA211 INA212 INA213 INA214
9
INA210,, INA211
INA212, INA213
INA214
SBOS437A – MAY 2008 – REVISED JUNE 2008............................................................................................................................................................... www.ti.com
As a final note, when the device is powered up, there
is an additional, nearly constant, and well-matched
25µA that flows in each of the inputs as long as the
shunt common-mode voltage is 3V or higher. Below
2V common-mode, the only current effects are the
result of the 1MΩ resistors.
REF INPUT IMPEDANCE EFFECTS
As with any difference amplifier, the INA210-INA214
series common-mode rejection ratio is affected by
any impedance present at the REF input. This
concern is not a problem when the REF pin is
connected directly to most references or power
supplies. When using resistive dividers from the
power supply or a reference voltage, the REF pin
should be buffered by an op amp.
In systems where the INA210-INA214 output can be
sensed differentially, such as by a differential input
analog-to-digital converter (ADC) or by using two
separate ADC inputs, the effects of external
impedance on the REF input can be cancelled.
Figure 26 depicts a method of taking the output from
the INA210-INA214 by using the REF pin as a
reference.
RSHUNT
Supply
USING THE INA210 WITH COMMON-MODE
TRANSIENTS ABOVE 26V
With a small amount of additional circuitry, the
INA210-INA214 series can be used in circuits subject
to transients higher than 26V, such as automotive
applications. Use only zener diode or zener-type
transient absorbers (sometimes referred to as
Transzorbs)— any other type of transient absorber
has an unacceptable time delay. Start by adding a
pair of resistors as shown in Figure 27 as a working
impedance for the zener. It is desirable to keep these
resistors as small as possible, most often around
10Ω. Larger values can be used with an effect on
gain that is discussed in the section on input filtering.
Because this circuit is limiting only short-term
transients, many applications are satisfied with a 10Ω
resistor along with conventional zener diodes of the
lowest power rating that can be found. This
combination uses the least amount of board space.
These diodes can be found in packages as small as
SOT-523 or SOD-523.
RSHUNT
Supply
RPROTECT
10W
Load
RPROTECT
10W
Load
Reference
Voltage
+2.7V to +26V
REF
INA21x
GND
R1
ADC
OUT
R3
Output
IN-
GND
INA21x
OUT
1MW
R3
1MW
R4
Output
IN-
IN+
V+
R2
V+
Shutdown
Control
R4
CBYPASS
0.01mF
to
0.1mF
IN+
CBYPASS
Figure 26. Sensing INA210-INA214 to Cancel
Effects of Impedance on the REF Input
10
REF
Submit Documentation Feedback
Figure 27. INA210-INA214 Transient Protection
Using Dual Zener Diodes
Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): INA210 INA211 INA212 INA213 INA214
INA210,, INA211
INA212, INA213
INA214
www.ti.com............................................................................................................................................................... SBOS437A – MAY 2008 – REVISED JUNE 2008
In the event that low-power zeners do not have
sufficient transient absorption capability and a higher
power transzorb must be used, the most
package-efficient solution then involves using a single
transzorb and back-to-back diodes between the
device inputs. The most space-efficient solutions are
dual series-connected diodes in a single SOT-523 or
SOD-523 package. This method is shown in
Figure 28. In either of these examples, the total board
area required by the INA210-INA214 with all
protective components is less than that of an SO-8
package, and only slightly greater than that of an
MSOP-8 package.
RSHUNT
Supply
RPROTECT
10W
Load
RPROTECT
10W
Reference
Voltage
INA21x
REF
GND
OUT
1MW
R3
1MW
R4
V+
Shutdown
Control
Output
IN-
IN+
CBYPASS
Figure 28. INA210-INA214 Transient Protection
Using a Single Transzorb and Input Clamps
Copyright © 2008, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Link(s): INA210 INA211 INA212 INA213 INA214
11
PACKAGE OPTION ADDENDUM
www.ti.com
24-Jul-2008
PACKAGING INFORMATION
Orderable Device
Status (1)
Package
Type
Package
Drawing
Pins Package Eco Plan (2)
Qty
INA210AIDCKR
ACTIVE
SC70
DCK
6
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
INA210AIDCKRG4
ACTIVE
SC70
DCK
6
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
INA210AIDCKT
ACTIVE
SC70
DCK
6
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
INA210AIDCKTG4
ACTIVE
SC70
DCK
6
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
INA211AIDCKR
ACTIVE
SC70
DCK
6
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
INA211AIDCKT
ACTIVE
SC70
DCK
6
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
INA212AIDCKR
ACTIVE
SC70
DCK
6
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
INA212AIDCKT
ACTIVE
SC70
DCK
6
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
INA213AIDCKR
ACTIVE
SC70
DCK
6
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
INA213AIDCKRG4
ACTIVE
SC70
DCK
6
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
INA213AIDCKT
ACTIVE
SC70
DCK
6
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
INA213AIDCKTG4
ACTIVE
SC70
DCK
6
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
INA214AIDCKR
ACTIVE
SC70
DCK
6
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
INA214AIDCKRG4
ACTIVE
SC70
DCK
6
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
INA214AIDCKT
ACTIVE
SC70
DCK
6
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
INA214AIDCKTG4
ACTIVE
SC70
DCK
6
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
Lead/Ball Finish
MSL Peak Temp (3)
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com
24-Jul-2008
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
Addendum-Page 2
PACKAGE MATERIALS INFORMATION
www.ti.com
22-Jul-2008
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
Package Package Pins
Type Drawing
SPQ
Reel
Reel
Diameter Width
(mm) W1 (mm)
A0 (mm)
B0 (mm)
K0 (mm)
P1
(mm)
W
Pin1
(mm) Quadrant
INA210AIDCKT
SC70
DCK
6
250
180.0
9.2
4.0
2.24
2.34
4.0
8.0
Q3
INA211AIDCKR
SC70
DCK
6
3000
180.0
9.2
2.55
2.34
1.22
4.0
8.0
Q3
INA211AIDCKT
SC70
DCK
6
250
180.0
9.2
2.55
2.34
1.22
4.0
8.0
Q3
INA212AIDCKR
SC70
DCK
6
3000
180.0
9.2
2.55
2.34
1.22
4.0
8.0
Q3
INA212AIDCKT
SC70
DCK
6
250
180.0
9.2
2.55
2.34
1.22
4.0
8.0
Q3
INA213AIDCKT
SC70
DCK
6
250
180.0
9.2
4.0
2.24
2.34
4.0
8.0
Q3
INA214AIDCKR
SC70
DCK
6
3000
180.0
9.2
4.0
2.24
2.34
4.0
8.0
Q3
INA214AIDCKT
SC70
DCK
6
250
180.0
9.2
4.0
2.24
2.34
4.0
8.0
Q3
Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
22-Jul-2008
*All dimensions are nominal
Device
Package Type
Package Drawing
Pins
SPQ
Length (mm)
Width (mm)
Height (mm)
INA210AIDCKT
SC70
DCK
6
250
202.0
201.0
28.0
INA211AIDCKR
SC70
DCK
6
3000
202.0
201.0
28.0
INA211AIDCKT
SC70
DCK
6
250
202.0
201.0
28.0
INA212AIDCKR
SC70
DCK
6
3000
202.0
201.0
28.0
INA212AIDCKT
SC70
DCK
6
250
202.0
201.0
28.0
INA213AIDCKT
SC70
DCK
6
250
202.0
201.0
28.0
INA214AIDCKR
SC70
DCK
6
3000
202.0
201.0
28.0
INA214AIDCKT
SC70
DCK
6
250
202.0
201.0
28.0
Pack Materials-Page 2
IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements,
and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should
obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are
sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.
TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard
warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where
mandated by government requirements, testing of all parameters of each product is not necessarily performed.
TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and
applications using TI components. To minimize the risks associated with customer products and applications, customers should provide
adequate design and operating safeguards.
TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right,
or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information
published by TI regarding third-party products or services does not constitute a license from TI to use such products or services or a
warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual
property of the third party, or a license from TI under the patents or other intellectual property of TI.
Reproduction of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied
by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive
business practice. TI is not responsible or liable for such altered documentation. Information of third parties may be subject to additional
restrictions.
Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all
express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not
responsible or liable for any such statements.
TI products are not authorized for use in safety-critical applications (such as life support) where a failure of the TI product would reasonably
be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement specifically governing
such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications of their applications, and
acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products
and any use of TI products in such safety-critical applications, notwithstanding any applications-related information or support that may be
provided by TI. Further, Buyers must fully indemnify TI and its representatives against any damages arising out of the use of TI products in
such safety-critical applications.
TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are
specifically designated by TI as military-grade or "enhanced plastic." Only products designated by TI as military-grade meet military
specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is solely at
the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in connection with such use.
TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products are
designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any non-designated
products in automotive applications, TI will not be responsible for any failure to meet such requirements.
Following are URLs where you can obtain information on other Texas Instruments products and application solutions:
Products
Amplifiers
Data Converters
DSP
Clocks and Timers
Interface
Logic
Power Mgmt
Microcontrollers
RFID
RF/IF and ZigBee® Solutions
amplifier.ti.com
dataconverter.ti.com
dsp.ti.com
www.ti.com/clocks
interface.ti.com
logic.ti.com
power.ti.com
microcontroller.ti.com
www.ti-rfid.com
www.ti.com/lprf
Applications
Audio
Automotive
Broadband
Digital Control
Medical
Military
Optical Networking
Security
Telephony
Video & Imaging
Wireless
www.ti.com/audio
www.ti.com/automotive
www.ti.com/broadband
www.ti.com/digitalcontrol
www.ti.com/medical
www.ti.com/military
www.ti.com/opticalnetwork
www.ti.com/security
www.ti.com/telephony
www.ti.com/video
www.ti.com/wireless
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
Copyright © 2008, Texas Instruments Incorporated