Burr Brown Products from Texas Instruments
INA203
INA203
INA203
INA203
INA204
INA205
SBOS393C–MARCH 2007–REVISED OCTOBER 2007
Unidirectional Measurement Current-Shunt Monitor with Dual Comparators
∙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 |
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∙ |
NOTEBOOK COMPUTERS |
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CELL PHONES |
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TELECOM EQUIPMENT |
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AUTOMOTIVE |
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POWER MANAGEMENT |
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BATTERY CHARGERS |
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∙ |
WELDING EQUIPMENT |
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INA203−INA205 |
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VS |
1 |
14 |
VIN+ |
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OUT |
2 |
13 |
VIN− |
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1.2V REF |
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CMP1 IN−/0.6V REF |
3 |
12 |
1.2V REF OUT |
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CMP1 IN+ |
4 |
11 |
CMP1 OUT |
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CMP2 IN+ |
5 |
10 |
CMP2 OUT |
CMP2 IN−/0.6V REF |
6 |
9 |
CMP2 DELAY |
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GND |
7 |
8 |
CMP1 RESET |
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SO-14, TSSOP-14 |
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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.
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INA203−INA205 |
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VS |
1 |
10 |
VIN+ |
OUT |
2 |
9 |
VIN− |
CMP1 IN+ |
3 |
8 |
CMP1 OUT |
CMP2 IN+ |
4 |
7 |
CMP2 OUT |
GND |
5 |
6 |
CMP1 RESET |
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0.6V REF |
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MSOP-10 |
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DEVICE |
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GAIN |
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INA203 |
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20V/V |
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INA204 |
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50V/V |
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INA205 |
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100V/V |
RELATED PRODUCTS
FEATURES |
PRODUCT |
Variant of INA203–INA205 Comparator 2 polarity |
INA206–INA208 |
Current-shunt monitor with single Comparator |
INA200–INA202 |
and VREF |
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Current-shunt monitor only |
INA193–INA198 |
Current-shunt monitor with split stages for filter |
INA270–INA271 |
options |
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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. |
Copyright © 2007, Texas Instruments Incorporated |
Products conform to specifications per the terms of the Texas |
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Instruments standard warranty. Production processing does not |
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necessarily include testing of all parameters. |
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INA203
INA204
INA205
www.ti.com
SBOS393C–MARCH 2007–REVISED OCTOBER 2007
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)
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EXTERNAL |
INTERNAL |
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COMP1 AND |
COMP1 AND |
COMP2 |
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PACKAGE- |
PACKAGE |
PACKAGE |
1.2V |
COMP2 |
COMP2 |
DELAY |
PRODUCT |
GAIN |
LEAD |
DESIGNATOR |
MARKING |
REF OUT |
REF INPUTS |
0.6V REF |
PIN |
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SO-14 |
D |
INA203A |
X |
X |
X |
X |
INA203 |
20V/V |
MSOP-10 |
DGS |
BQN |
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X |
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TSSOP-14 |
PW |
INA203A |
X |
X |
X |
X |
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SO-14 |
D |
INA204A |
X |
X |
X |
X |
INA204 |
50V/V |
MSOP-10 |
DGS |
BQO |
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X |
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TSSOP-14 |
PW |
INA204A |
X |
X |
X |
X |
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SO-14 |
D |
INA205A |
X |
X |
X |
X |
INA205 |
100V/V |
MSOP-10 |
DGS |
BQP |
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X |
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TSSOP-14 |
PW |
INA205A |
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.
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INA203, INA204, INA205 |
UNIT |
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Supply Voltage, V+ |
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18 |
V |
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Current-Shunt Monitor Analog |
Differential (VIN+) – (VIN–) |
–18 to +18 |
V |
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Inputs, VIN+and VIN– |
Common-Mode |
–16 to +80 |
V |
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Comparator Analog Input and Reset Pins |
GND – 0.3 to (V+) + 0.3 |
V |
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Analog Output, Out Pin |
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GND – 0.3 to (V+) + 0.3 |
V |
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Comparator Output, Out Pin |
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GND – 0.3 to 18 |
V |
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VREF and CMP2 Delay Pin |
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GND – 0.3 to 10 |
V |
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Input Current Into Any Pin |
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5 |
mA |
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Operating Temperature |
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–55 to +150 |
°C |
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Storage Temperature |
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–65 to +150 |
°C |
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Junction Temperature |
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+150 |
°C |
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ESD Ratings |
Human Body Model (HBM) |
4000 |
V |
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Charged Device Model (CDM) |
500 |
V |
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(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.
2 |
Submit Documentation Feedback |
Copyright © 2007, Texas Instruments Incorporated |
Product Folder Link(s): INA203 INA204 INA205
INA203 INA204
INA205
www.ti.com
SBOS393C–MARCH 2007–REVISED OCTOBER 2007
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 = 10kΩ to GND, RPULL-UP = 5.1kΩ each connected from CMP1 OUT and CMP2 OUT to VS, and CMP1 IN+ = 1V and CMP2 IN– = GND, unless otherwise noted.
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INA203, INA204, INA205 |
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CURRENT-SHUNT MONITOR PARAMETERS |
CONDITIONS |
MIN |
TYP |
MAX |
UNIT |
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INPUT |
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Full-Scale Sense Input Voltage |
VSENSE |
VSENSE = VIN+ – VIN– |
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0.15 |
(VS – 0.25)/Gain |
V |
Common-Mode Input Range |
VCM |
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–16 |
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80 |
V |
Common-Mode Rejection Ratio |
CMRR |
VCM = –16V to +80V |
80 |
100 |
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dB |
Over Temperature |
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VCM = +12V to +80V |
100 |
123 |
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dB |
Offset Voltage, RTI(1) |
VOS |
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±0.5 |
±2.5 |
mV |
+25°C to +125°C |
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±3 |
mV |
–40°C to +25°C |
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±3.5 |
mV |
vs Temperature |
dVOS/dT |
TMIN to TMAX |
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5 |
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μV/°C |
vs Power Supply |
PSR |
VOUT = 2V, VCM = +18V, 2.7V |
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2.5 |
100 |
μV/V |
Input Bias Current, VIN– Pin |
IB |
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±9 |
±16 |
μA |
OUTPUT (VSENSE ≥ 20mV) |
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Gain: |
G |
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INA203 |
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20 |
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V/V |
INA204 |
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50 |
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V/V |
INA205 |
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100 |
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V/V |
Gain Error |
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VSENSE = 20mV to 100mV |
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±0.2 |
±1 |
% |
Over Temperature |
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VSENSE = 20mV to 100mV |
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±2 |
% |
Total Output Error(2) |
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VSENSE = 120mV, VS = +16V |
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±0.75 |
±2.2 |
% |
Over Temperature |
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VSENSE = 120mV, VS = +16V |
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±3.5 |
% |
Nonlinearity Error(3) |
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VSENSE = 20mV to 100mV |
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±0.002 |
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% |
Output Impedance, Pin 2 |
RO |
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1.5 |
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Ω |
Maximum Capacitive Load |
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No Sustained Oscillation |
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10 |
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nF |
OUTPUT (VSENSE < 20mV)(4) |
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INA203, INA204, INA205 |
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–16V ≤ VCM < 0V |
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300 |
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mV |
INA203 |
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0V ≤ VCM ≤ VS, VS = 5V |
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0.4 |
V |
INA204 |
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0V ≤ VCM ≤ VS, VS = 5V |
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1 |
V |
INA205 |
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0V ≤ VCM ≤ VS, VS = 5V |
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2 |
V |
INA203, INA204, INA205 |
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VS < VCM ≤ 80V |
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300 |
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mV |
VOLTAGE OUTPUT(5) |
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Output Swing to the Positive Rail |
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VIN– = 11V, VIN+ = 12V |
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(V+) – 0.15 |
(V+) – 0.25 |
V |
Output Swing to GND(6) |
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VIN– = 0V, VIN+ = –0.5V |
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(VGND) + 0.004 |
(VGND) + 0.05 |
V |
FREQUENCY RESPONSE |
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Bandwidth: |
BW |
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INA203 |
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CLOAD = 5pF |
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500 |
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kHz |
INA204 |
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CLOAD = 5pF |
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300 |
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kHz |
INA205 |
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CLOAD = 5pF |
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200 |
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kHz |
Phase Margin |
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CLOAD < 10nF |
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40 |
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Degrees |
Slew Rate |
SR |
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1 |
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V/μs |
Settling Time (1%) |
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VSENSE = 10mVPP to 100mVPP, |
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2 |
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μs |
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CLOAD = 5pF |
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NOISE, RTI |
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Output Voltage Noise Density |
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40 |
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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.
Copyright © 2007, Texas Instruments Incorporated |
Submit Documentation Feedback |
3 |
Product Folder Link(s): INA203 INA204 INA205
INA203
INA204
INA205
www.ti.com
SBOS393C–MARCH 2007–REVISED OCTOBER 2007
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 = 10kΩ to GND, and RPULL-UP = 5.1kΩ each connected from CMP1 OUT and CMP2 OUT to VS, unless otherwise noted.
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INA203, INA204, INA205 |
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COMPARATOR PARAMETERS |
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CONDITIONS |
MIN |
TYP |
MAX |
UNIT |
OFFSET VOLTAGE |
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Offset Voltage |
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Comparator Common-Mode Voltage = Threshold Voltage |
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2 |
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mV |
Offset Voltage Drift, Comparator 1 |
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±2 |
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μV/°C |
Offset Voltage Drift, Comparator 2 |
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+5.4 |
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μV/°C |
Threshold |
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TA = +25°C |
590 |
608 |
620 |
mV |
Over Temperature |
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586 |
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625 |
mV |
Hysteresis(1), CMP1 |
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TA = –40°C to +85°C |
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–8 |
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mV |
Hysteresis(1), CMP2 |
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TA = –40°C to +85°C |
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8 |
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mV |
INPUT BIAS CURRENT(2) |
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CMP1 IN+, CMP2 IN+ |
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0.005 |
10 |
nA |
vs Temperature |
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15 |
nA |
INPUT IMPEDANCE |
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Pins 3 and 6 (14-pin packages only) |
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10 |
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kΩ |
INPUT RANGE |
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CMP1 IN+ and CMP2 IN+ |
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0V to VS – 1.5V |
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V |
Pins 3 and 6 (14-pin packages only)(3) |
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0V to VS – 1.5V |
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V |
OUTPUT |
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Large-Signal Differential Voltage Gain |
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CMP VOUT 1V to 4V, RL ≥ 15kΩ Connected to 5V |
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200 |
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V/mV |
High-Level Output Current |
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VID = 0.4V, VOH = VS |
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0.0001 |
1 |
μA |
Low-Level Output Voltage |
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VID = –0.6V, IOL = 2.35mA |
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220 |
300 |
mV |
RESPONSE TIME(4) |
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Comparator 1 |
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RL to 5V, CL = 15pF, 100mV Input Step with 5mV Overdrive |
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1.3 |
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μs |
Comparator 2 |
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RL to 5V, CL = 15pF, 100mV Input Step with 5mV Overdrive, |
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1.3 |
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μs |
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CDELAY Pin Open |
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RESET |
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RESET Threshold(5) |
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1.1 |
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V |
Logic Input Impedance |
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2 |
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MΩ |
Minimum RESET Pulse Width |
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1.5 |
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μs |
RESET Propagation Delay |
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3 |
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μs |
Comparator 2 Delay Equation(6) |
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CDELAY = tD/5 |
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μF |
Comparator 2 Delay |
tD |
CDELAY = 0.1μF |
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0.5 |
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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 2MΩ (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.
4 |
Submit Documentation Feedback |
Copyright © 2007, Texas Instruments Incorporated |
Product Folder Link(s): INA203 INA204 INA205
INA203 INA204
INA205
www.ti.com
SBOS393C–MARCH 2007–REVISED OCTOBER 2007
VTHRESHOLD |
VTHRESHOLD |
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0.592 |
0.6 |
0.6 |
0.608 |
Input Voltage |
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Input Voltage |
Hysteresis = VTHRESHOLD − 8mV |
Hysteresis = VTHRESHOLD − 8mV |
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a) CMP1 |
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b) CMP2 |
Figure 1. Comparator Hysteresis
Copyright © 2007, Texas Instruments Incorporated |
Submit Documentation Feedback |
5 |
Product Folder Link(s): INA203 INA204 INA205
INA203
INA204
INA205
www.ti.com
SBOS393C–MARCH 2007–REVISED OCTOBER 2007
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 = 10kΩ to GND, and RPULL-UP = 5.1kΩ each connected from CMP1 OUT and CMP2 OUT to VS, unless otherwise noted.
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INA203, INA204, INA205 |
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REFERENCE PARAMETERS |
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CONDITIONS |
MIN |
TYP |
MAX |
UNIT |
REFERENCE VOLTAGE |
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1.2VREFOUT Output Voltage |
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1.188 |
1.2 |
1.212 |
V |
Reference Drift |
dVOUT/dT |
TA = –40°C to +85°C |
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40 |
100 |
ppm/°C |
0.6VREF Output Voltage (Pins 3 and 6 of 14-pin packages only) |
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0.6 |
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V |
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Reference Drift |
dVOUT/dT |
TA = –40°C to +85°C |
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40 |
100 |
ppm/°C |
LOAD REGULATION |
dVOUT/dILOAD |
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Sourcing |
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0mA < ISOURCE < 0.5mA |
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0.4 |
2 |
mV/mA |
Sinking |
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0mA < ISINK < 0.5mA |
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0.4 |
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mV/mA |
LOAD CURRENT |
ILOAD |
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1 |
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mA |
LINE REGULATION |
dVOUT/dVS |
2.7V < VS < 18V |
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30 |
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μV/V |
CAPACITIVE LOAD |
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Reference Output Maximum Capacitive Load |
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No Sustained Oscillations |
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10 |
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nF |
OUTPUT IMPEDANCE |
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Pins 3 and 6 of 14-Pin Packages Only |
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10 |
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kΩ |
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 = 10kΩ to GND, RPULL-UP = 5.1kΩ each connected from CMP1 OUT and CMP2 OUT to VS, and CMP1 IN+ = 1V and CMP2 IN– = GND, unless otherwise noted.
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INA203, INA204, INA205 |
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GENERAL PARAMETERS |
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CONDITIONS |
MIN |
TYP |
MAX |
UNIT |
POWER SUPPLY |
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Operating Power Supply |
VS |
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+2.7 |
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+18 |
V |
Quiescent Current |
IQ |
VOUT = 2V |
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1.8 |
2.2 |
mA |
Over Temperature |
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VSENSE = 0mV |
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2.8 |
mA |
Comparator Power-On Reset Threshold(1) |
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1.5 |
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V |
TEMPERATURE |
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Specified Temperature Range |
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–40 |
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+125 |
°C |
Operating Temperature Range |
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–55 |
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+150 |
°C |
Storage Temperature Range |
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–65 |
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+150 |
°C |
Thermal Resistance |
θJA |
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MSOP-10 Surface-Mount |
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200 |
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°C/W |
SO-14, TSSOP-14 Surface-Mount |
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150 |
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°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.
6 |
Submit Documentation Feedback |
Copyright © 2007, Texas Instruments Incorporated |
Product Folder Link(s): INA203 INA204 INA205
INA203 INA204
INA205
www.ti.com
SBOS393C–MARCH 2007–REVISED OCTOBER 2007
All specifications at TA = +25°C, VS = +12V, VCM = +12V, and VSENSE = 100mV, unless otherwise noted.
GAIN vs FREQUENCY
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45 |
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G = 100 |
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CLOAD = 1000pF |
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40 |
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35 |
G = 50 |
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Gain(dB) |
30 |
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G = 20 |
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25 |
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20 |
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15 |
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10 |
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5 |
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10k |
100k |
1M |
Frequency (Hz)
Figure 2.
GAIN PLOT
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20 |
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18 |
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100V/V |
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16 |
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14 |
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50V/V |
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(V) |
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OUT |
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V |
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20V/V |
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VSENSE (mV) |
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Figure 4. |
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4.0 |
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TOTAL OUTPUT ERROR vs VSENSE |
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value) |
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ErrorTotalOutputoutputidealtheof(%error |
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VSENSE (mV)
Figure 6.
GAIN vs FREQUENCY
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45 |
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G = 100 |
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40 |
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35 |
G = 50 |
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Gain(dB) |
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G = 20 |
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25 |
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CLOAD |
= 0 |
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10k |
100k |
1M |
Frequency (Hz)
Figure 3.
COMMON-MODE AND POWER-SUPPLY REJECTION vs FREQUENCY
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Power-SupplyRejection(dB) |
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CMR |
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PSR |
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1k |
10k |
100k |
Frequency (Hz)
Figure 5.
TOTAL OUTPUT ERROR vs COMMON-MODE VOLTAGE
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0.1 |
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0.09 |
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0.08 |
(%) |
0.07 |
Error |
0.06 |
TotalOutput |
0.05 |
0.04
0.03
0.02
0.01
0
−16 −12 −8 −4 0 4 8 12 16 20 |
... |
76 80 |
Common-Mode Voltage (V)
Figure 7.
Copyright © 2007, Texas Instruments Incorporated |
Submit Documentation Feedback |
7 |
Product Folder Link(s): INA203 INA204 INA205
INA203
INA204
INA205
www.ti.com
SBOS393C–MARCH 2007–REVISED OCTOBER 2007
TYPICAL CHARACTERISTICS (continued)
All specifications at TA = +25°C, VS = +12V, VCM = +12V, and VSENSE = 100mV, unless otherwise noted.
OutputVoltage(V)
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POSITIVE OUTPUT VOLTAGE SWING |
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vs OUTPUT CURRENT |
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12 |
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11 |
VS |
= 12V |
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Sourcing Current |
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+25°C |
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6 |
VS |
= 3V |
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Sourcing Current |
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+25°C |
−40°C |
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to source current. Current |
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sinking capability is |
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+125°C |
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approximately 400µA. |
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0 |
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20 |
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Output Current (mA)
Q
I (mA)
QUIESCENT CURRENT vs OUTPUT VOLTAGE
3.5
3.0
2.5
2.0
1.5
1.0
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0
0 |
1 |
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Output Voltage (V)
Figure 8. |
Figure 9. |
Q
I (mA)
QUIESCENT CURRENT |
OUTPUT SHORT-CIRCUIT CURRENT |
vs COMMON-MODE VOLTAGE |
vs SUPPLY VOLTAGE |
2.00 |
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34 |
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VSENSE = 100mV |
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−40°C |
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1.75 |
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V |
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= 12V |
VS = 2.7V |
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30 |
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+25°C |
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S |
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CircuitCurrent |
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1.50 |
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+125°C |
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1.25 |
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VS = 12V |
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1.00 |
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OutputShort |
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VSENSE = 0mV |
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VS = 2.7V |
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0.50 |
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−16 −12 |
−8 |
−4 |
0 |
4 |
8 |
12 |
16 |
20 |
24 |
28 |
32 |
36 |
2.5 |
3.5 |
4.5 |
5.5 |
6.5 |
7.5 |
8.5 |
9.5 |
10.5 |
11.5 |
17 |
18 |
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VCM (V) |
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Supply Voltage (V) |
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Figure 10. |
Figure 11. |
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STEP RESPONSE |
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STEP RESPONSE |
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G = 20 |
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G = 20 |
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OutputVoltage(50mV/div) |
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OutputVoltage(500mV/div) |
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VSENSE = 10mV to 20mV |
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VSENSE = 10mV to 100mV |
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Time (2 s/div) |
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Time (2 s/div) |
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Figure 12. |
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Figure 13. |
8 |
Submit Documentation Feedback |
Copyright © 2007, Texas Instruments Incorporated |
Product Folder Link(s): INA203 INA204 INA205
INA203 INA204
INA205
www.ti.com
SBOS393C–MARCH 2007–REVISED OCTOBER 2007
TYPICAL CHARACTERISTICS (continued)
All specifications at TA = +25°C, VS = +12V, VCM = +12V, and VSENSE = 100mV, unless otherwise noted.
STEP RESPONSE
G = 20
OutputVoltage(50mV/div)
VSENSE = 90mV to 100mV
Time (2 s/div)
Figure 14.
STEP RESPONSE
G = 50
OutputVoltage(1V/div)
VSENSE = 10mV to 100mV
Time (5 s/div)
Figure 16.
STEP RESPONSE
G = 100
OutputVoltage(2V/div)
VSENSE = 10mV to 100mV
Time (10 s/div)
Figure 18.
STEP RESPONSE
G = 50
OutputVoltage(100mV/div)
VSENSE = 10mV to 20mV
Time (5 s/div)
Figure 15.
STEP RESPONSE
G = 50
OutputVoltage(100mV/div)
VSENSE = 90mV to 100mV
Time (5 s/div)
Figure 17.
COMPARATOR VOL vs ISINK
|
600 |
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500 |
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400 |
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(mV) |
300 |
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OL |
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V |
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200 |
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100 |
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0 |
0 |
1 |
2 |
3 |
4 |
5 |
6 |
ISINK (mA)
Figure 19.
Copyright © 2007, Texas Instruments Incorporated |
Submit Documentation Feedback |
9 |
Product Folder Link(s): INA203 INA204 INA205