Texas Instruments INA203, INA204, INA205 Schematic [ru]

    

INA203

IN+

IN-

CMP1OUT

CMP2OUT

CMP1 RESET

OUT

CMP1IN+

CMP2IN+

GND

INA203 INA205-

MSOP-10

0.6VREF

IN+

IN-

1.2VREFOUT

CMP1OUT

CMP2OUT

CMP2DELAY

CMP1 RESET

OUT

CMP1IN /0.6VREF-

CMP1IN+

CMP2IN+

CMP2IN /0.6VREF-

GND

INA203 INA205-

SO-14,TSSOP-14

1.2VREF

INA203 INA204 INA205

SBOS393C – MARCH 2007 – REVISED OCTOBER 2007

Unidirectional Measurement

Current-Shunt Monitor with Dual Comparators

FEATURES DESCRIPTION

• COMPLETE CURRENT SENSE SOLUTION

• DUAL COMPARATORS:

– Comparator 1 with Latch – Comparator 2 with Optional Delay

• COMMON-MODE RANGE: – 16V to +80V to +80V. The INA203, INA204, and INA205 are

• 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

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

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.

2 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.

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.

DEVICE GAIN

INA203 20V/V INA204 50V/V INA205 100V/V

ABSOLUTE MAXIMUM RATINGS

Supply Voltage, V+ 18 V Current-Shunt Monitor Analog

Inputs, V Comparator Analog Input and Reset Pins GND – 0.3 to (V+) + 0.3 V

Analog Output, Out Pin GND – 0.3 to (V+) + 0.3 V Comparator Output, Out Pin GND – 0.3 to 18 V V

REF

Input Current Into Any Pin 5 mA Operating Temperature – 55 to +150 ° C Storage Temperature – 65 to +150 ° C Junction Temperature +150 ° C

ESD Ratings

(1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may

and V

IN+

and CMP2 Delay Pin GND – 0.3 to 10 V

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.

IN –

PACKAGE- PACKAGE PACKAGE 1.2V COMP2 COMP2 DELAY

SO-14 D INA203A X X X X

TSSOP-14 PW INA203A X X X X

SO-14 D INA204A X X X X

TSSOP-14 PW INA204A X X X X

SO-14 D INA205A X X X X

TSSOP-14 PW INA205A X X X X

(1)

Differential (V Common-Mode – 16 to +80 V

Human Body Model (HBM) 4000 V Charged Device Model (CDM) 500 V

) – (V

IN+

) – 18 to +18 V

IN –

(1)

EXTERNAL INTERNAL

COMP1 AND COMP1 AND COMP2

INA203, INA204, INA205 UNIT

Product Folder Link(s): INA203 INA204 INA205

www.ti.com

SBOS393C – MARCH 2007 – REVISED OCTOBER 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, V OUT and CMP2 OUT to VS, and CMP1 IN+ = 1V and CMP2 IN – = GND, unless otherwise noted.

CURRENT-SHUNT MONITOR PARAMETERS CONDITIONS MIN TYP MAX UNIT

INPUT

Full-Scale Sense Input Voltage V

Common-Mode Input Range V

Common-Mode Rejection Ratio CMRR VCM= – 16V to +80V 80 100 dB

Over Temperature VCM= +12V to +80V 100 123 dB

Offset Voltage, RTI

+25 ° C to +125 ° C ± 3 mV – 40 ° C to +25 ° C ± 3.5 mV

vs Temperature dV

vs Power Supply PSR V Input Bias Current, V OUTPUT (V

Gain: G

INA203 20 V/V

INA204 50 V/V

INA205 100 V/V Gain Error V

Over Temperature V

Total Output Error

Over Temperature V

Nonlinearity Error Output Impedance, Pin 2 R Maximum Capacitive Load No Sustained Oscillation 10 nF

OUTPUT (V

INA203, INA204, INA205 – 16V ≤ VCM< 0V 300 mV INA203 0V ≤ VCM≤ VS, VS= 5V 0.4 V INA204 0V ≤ VCM≤ VS, VS= 5V 1 V INA205 0V ≤ VCM≤ VS, VS= 5V 2 V INA203, INA204, INA205 VS< VCM≤ 80V 300 mV

VOLTAGE OUTPUT Output Swing to the Positive Rail V Output Swing to GND FREQUENCY RESPONSE

Bandwidth: BW

INA203 C

INA204 C

INA205 C Phase Margin C Slew Rate SR 1 V/ μ s

Settling Time (1%) 2 μ s

NOISE, RTI

Output Voltage Noise Density 40 nV/ √ Hz

(1) Offset is extrapolated from measurements of the output at 20mV and 100mV V (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.

(1)

Pin I

IN –

≥ 20mV)

SENSE

(2)

(3)

(4)

< 20mV)

SENSE

(5)

(6)

= +12V, V

SENSE

/dT T

OUT

SENSE

= 100mV, RL= 10k Ω to GND, R

= 5.1k Ω each connected from CMP1

PULL-UP

INA203, INA204, INA205

= V

SENSE

– V

IN+

IN –

0.15 (V

– 0.25)/Gain V

– 16 80 V

± 0.5 ± 2.5 mV

to T

MIN

MAX

5 μ V/ ° C

= 2V, VCM= +18V, 2.7V 2.5 100 μ V/V

± 9 ± 16 μ A

= 20mV to 100mV ± 0.2 ± 1 %

= 20mV to 100mV ± 2 %

= 120mV, VS= +16V ± 0.75 ± 2.2 %

= 120mV, VS= +16V ± 3.5 %

= 20mV to 100mV ± 0.002 %

1.5 Ω

= 11V, V

IN –

= 0V, V

IN –

LOAD LOAD LOAD

LOAD

= 10mV

LOAD

= 12V (V+) – 0.15 (V+) – 0.25 V

IN+

= – 0.5V (V

IN+

) + 0.004 (V

GND

) + 0.05 V

GND

= 5pF 500 kHz = 5pF 300 kHz = 5pF 200 kHz

< 10nF 40 Degrees

to 100mV

= 5pF

SENSE

INA203 INA204 INA205

Product Folder Link(s): INA203 INA204 INA205

www.ti.com

INA203 INA204 INA205

SBOS393C – MARCH 2007 – REVISED OCTOBER 2007

ELECTRICAL CHARACTERISTICS: COMPARATOR

Boldface limits apply over the specified temperature range: TA= – 40 ° C to +125 ° C.

At TA= +25 ° C, VS= +12V, V CMP1 OUT and CMP2 OUT to VS, unless otherwise noted.

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 μ V/ ° C

Offset Voltage Drift, Comparator 2 +5.4 μ V/ ° C

Threshold TA= +25 ° C 590 608 620 mV

Over Temperature 586 625 mV

Hysteresis Hysteresis

INPUT BIAS CURRENT

CMP1 IN+, CMP2 IN+ 0.005 10 nA

INPUT IMPEDANCE

Pins 3 and 6 (14-pin packages only) 10 k Ω

INPUT RANGE

CMP1 IN+ and CMP2 IN+ 0V to VS– 1.5V V Pins 3 and 6 (14-pin packages only)

OUTPUT

Large-Signal Differential Voltage Gain CMP V High-Level Output Current VID= 0.4V, VOH= V Low-Level Output Voltage VID= – 0.6V, IOL= 2.35mA 220 300 mV

RESPONSE TIME

Comparator 1 RLto 5V, CL= 15pF, 100mV Input Step with 5mV Overdrive 1.3 μ s Comparator 2 1.3 μ s

RESET

RESET Threshold Logic Input Impedance 2 M Ω Minimum RESET Pulse Width 1.5 μ s RESET Propagation Delay 3 μ s Comparator 2 Delay Equation Comparator 2 Delay t

(1) Hysteresis refers to the threshold (the threshold specification applies to a rising edge of a noninverting input) of a falling edge on the (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 Ω (typical) pull-down. Leaving the CMP1 RESET open results in a LOW state, with

(6) The Comparator 2 delay applies to both rising and falling edges of the comparator output.

(1)

, CMP1 TA= – 40 ° C to +85 ° C – 8 mV

(1)

, CMP2 TA= – 40 ° C to +85 ° C 8 mV

vs Temperature 15 nA

(2)

(4)

(5)

(6)

noninverting input of the comparator; refer to Figure 1 .

transparent comparator operation.

(3)

= +12V, V

RLto 5V, CL= 15pF, 100mV Input Step with 5mV Overdrive,

= 100mV, RL= 10k Ω to GND, and R

SENSE

1V to 4V, RL≥ 15k Ω Connected to 5V 200 V/mV

OUT

DELAY

= 5.1k Ω each connected from

PULL-UP

INA203, INA204, INA205

0V to VS– 1.5V V

Pin Open

= 0.1 μ F 0.5 s

DELAY

0.0001 1 μ A

1.1 V

= tD/5 μ F

DELAY

Product Folder Link(s): INA203 INA204 INA205

www.ti.com

Hysteresis=V

THRESHOLD

- 8mV

THRESHOLD

InputVoltage

0.592 0.6

a) CMP1

Hysteresis=V

THRESHOLD

- 8mV

THRESHOLD

InputVoltage

0.6080.6

b) CMP2

Figure 1. Comparator Hysteresis

INA203 INA204 INA205

SBOS393C – MARCH 2007 – REVISED OCTOBER 2007

Product Folder Link(s): INA203 INA204 INA205

www.ti.com

INA203 INA204 INA205

SBOS393C – MARCH 2007 – REVISED OCTOBER 2007

ELECTRICAL CHARACTERISTICS: REFERENCE

Boldface limits apply over the specified temperature range: TA= – 40 ° C to +125 ° C.

At TA= +25 ° C, VS= +12V, V CMP1 OUT and CMP2 OUT to VS, unless otherwise noted.

REFERENCE PARAMETERS CONDITIONS MIN TYP MAX UNIT

REFERENCE VOLTAGE

1.2V

Reference Drift dV

0.6V

Reference Drift dV

LOAD REGULATION dV

Sourcing 0mA < I Sinking 0mA < I

LOAD CURRENT I LINE REGULATION dV 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 Ω

Output Voltage 1.188 1.2 1.212 V

REFOUT

Output Voltage (Pins 3 and 6 of 14-pin packages only) 0.6 V

REF

= +12V, V

= 100mV, RL= 10k Ω to GND, and R

SENSE

/dT TA= – 40 ° C to +85 ° C 40 100 ppm/ ° C

OUT

/dT TA= – 40 ° C to +85 ° C 40 100 ppm/ ° C

OUT

/dI

OUT

LOAD

/dV

OUT

= 5.1k Ω each connected from

PULL-UP

INA203, INA204, INA205

< 0.5mA 0.4 2 mV/mA

SOURCE

< 0.5mA 0.4 mV/mA

SINK

1 mA

2.7V < VS< 18V 30 μ V/V

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, V connected from CMP1 OUT and CMP2 OUT to VS, and CMP1 IN+ = 1V and CMP2 IN – = GND, unless otherwise noted.

GENERAL PARAMETERS CONDITIONS MIN TYP MAX UNIT POWER SUPPLY Operating Power Supply V

Quiescent Current I

Over Temperature V

Comparator Power-On Reset Threshold

TEMPERATURE

Specified Temperature Range – 40 +125 ° C Operating Temperature Range – 55 +150 ° C Storage Temperature Range – 65 +150 ° C Thermal Resistance θ

MSOP-10 Surface-Mount 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.

(1)

= +12V, V

= 100mV, RL= 10k Ω to GND, R

SENSE

= 5.1k Ω each

PULL-UP

INA203, INA204, INA205

= 2V 1.8 2.2 mA

OUT

= 0mV 2.8 mA

SENSE

+2.7 +18 V

1.5 V

Product Folder Link(s): INA203 INA204 INA205

www.ti.com

TYPICAL CHARACTERISTICS

10k

100k

Gain(dB)

Frequency(Hz)

G=100

C =1000pF

LOAD

G=50

G=20

10k

100k

Gain(dB)

Frequency(Hz)

G=100

G=50

G=20

C =0

LOAD

100

200 300 400

500 600 700

(V)

V (mV)

SENSE

800 900

50V/V

20V/V

100V/V

140

130

120

110

100

100 1k 10k

Common-Modeand

ower

-SupplyRejection(dB)

Frequency(Hz)

100k

CMR

PSR

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

100

150 200

250 300

350

TotalOutputError

(%erroroftheidealoutputvalue)

V (mV)

SENSE

400 450

500

0.1

0.09

0.08

0.07

0.06

0.05

0.04

0.03

0.02

0.01

-16

-12

-8

-4 0

4 128

2016

otalOutputError(%)

Common-ModeVoltage(V)

... 76

All specifications at TA= +25 ° C, VS= +12V, V

GAIN vs FREQUENCY GAIN vs FREQUENCY

Figure 2. Figure 3.

= +12V, and V

SBOS393C – MARCH 2007 – REVISED OCTOBER 2007

= 100mV, unless otherwise noted.

SENSE

INA203 INA204 INA205

GAIN PLOT vs FREQUENCY

Figure 4. Figure 5.

TOTAL OUTPUT ERROR vs V

COMMON-MODE AND POWER-SUPPLY REJECTION

SENSE

TOTAL OUTPUT ERROR vs COMMON-MODE VOLTAGE

Figure 6. Figure 7.

Product Folder Link(s): INA203 INA204 INA205

www.ti.com

OutputVoltage(V)

OutputCurrent(mA)

V =12V

+25 C°

- °40 C

+125 C°

SourcingCurrent

V =3V

SourcingCurrent

Outputstageisdesigned tosourcecurrent.Current sinkingcapabilityis approximately400 A.m

3.5

3.0

2.5

2.0

1.5

1.0

0.5

3 4

5 6

I (mA)

OutputVoltage(V)

8 9

2.00

1.75

1.50

1.25

1.00

0.75

0.50

-16

-12

-8

-4 0 4

8 12 16

20 24 28

(mA)

V (V)

V =0mV

SENSE

V =12V

V =2.7V

V =100mV

SENSE

V =12V

V =2.7V

2.5

3.5

4.5 5.5 6.5

7.5 8.5 9.5

10.5

OutputShort-CircuitCurrent(mA)

SupplyVoltage(V)

11.5 17

- °40 C

+ °25 C

+125 C°

OutputVoltage(50mV/div)

Time(2 s/div)m

G=20

V =10mVto20mV

SENSE

Time(2 s/div)m

G=20

OutputVoltage(500mV/div)

V =10mVto100mV

SENSE

INA203 INA204 INA205

SBOS393C – MARCH 2007 – REVISED OCTOBER 2007

TYPICAL CHARACTERISTICS (continued)

All specifications at TA= +25 ° C, VS= +12V, V

POSITIVE OUTPUT VOLTAGE SWING

vs OUTPUT CURRENT QUIESCENT CURRENT vs OUTPUT VOLTAGE

Figure 8. Figure 9.

= +12V, and V

= 100mV, unless otherwise noted.

SENSE

QUIESCENT CURRENT OUTPUT SHORT-CIRCUIT CURRENT

vs COMMON-MODE VOLTAGE vs SUPPLY VOLTAGE

Figure 10. Figure 11.

STEP RESPONSE STEP RESPONSE

Figure 12. Figure 13.

Product Folder Link(s): INA203 INA204 INA205

www.ti.com

Time(2 s/div)m

G=20

OutputVoltage(50mV/div)

V =90mVto100mV

SENSE

Time(5 s/div)m

G=50

OutputVoltage(100mV/div)

V =10mVto20mV

SENSE

Time(5 s/div)m

G=50

OutputVoltage(1V/div)

V =10mVto100mV

SENSE

Time(5 s/div)m

G=50

OutputVoltage(100mV/div)

V =90mVto100mV

SENSE

Time(10 s/div)m

G=100

OutputVoltage(2V/div)

V =10mVto100mV

SENSE

600

500

400

300

200

100

2 3 4

V (mV)

I (mA)

SINK

TYPICAL CHARACTERISTICS (continued)

All specifications at TA= +25 ° C, VS= +12V, V

STEP RESPONSE STEP RESPONSE

Figure 14. Figure 15.

STEP RESPONSE STEP RESPONSE

= +12V, and V

= 100mV, unless otherwise noted.

SENSE

INA203 INA204 INA205

SBOS393C – MARCH 2007 – REVISED OCTOBER 2007

Figure 16. Figure 17.

STEP RESPONSE COMPARATOR V

Figure 18. Figure 19.

vs I

SINK

Product Folder Link(s): INA203 INA204 INA205

+ 18 hidden pages