Texas Instruments INA333, INA333AIDRGT Datasheet

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INA333

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SBOS445–JULY 2008

Micro-Power (50μA), Zerø-Drift, Rail-to-Rail Out

Instrumentation Amplifier

FEATURES

LOW OFFSET VOLTAGE: 25μV (max), G ≥ 100

LOW DRIFT: 0.1μV/°C, G ≥ 100

LOW NOISE: 50nV/√Hz, G ≥ 100

HIGH CMRR: 100dB (min), G ≥ 10

LOW INPUT BIAS CURRENT: 200pA (max)

SUPPLY RANGE: +1.8V to +5.5V

INPUT VOLTAGE: (V–) +0.1V to (V+) –0.1V

OUTPUT RANGE: (V–) +0.05V to (V+) –0.05V

LOW QUIESCENT CURRENT: 50μA

OPERATING TEMPERATURE: –40°C to +125°C

RFI FILTERED INPUTS

MSOP-8 AND DFN-8 PACKAGES

APPLICATIONS

BRIDGE AMPLIFIERS

ECG AMPLIFIERS

PRESSURE SENSORS

MEDICAL INSTRUMENTATION

PORTABLE INSTRUMENTATION

WEIGH SCALES

THERMOCOUPLE AMPLIFIERS

RTD SENSOR AMPLIFIERS

DATA ACQUISITION

DESCRIPTION

The INA333 is a low-power, precision instrumentation amplifier offering excellent accuracy. The versatile 3-op amp design, small size, and low power make it ideal for a wide range of portable applications.

A single external resistor sets any gain from 1 to 1000. The INA333 is designed to use an industry-standard gain equation: G = 1 + (100kΩ/RG).

The INA333 provides very low offset voltage (25μV, G ≥ 100), excellent offset voltage drift (0.1μV/°C, G ≥ 100), and high common-mode rejection (100dB at G ≥ 10). It operates with power supplies as low as 1.8V (±0.9V), and quiescent current is only 50μA—ideal for battery-operated systems. Using autocalibration techniques to ensure excellent precision over the extended industrial temperature range, the INA333 also offers exceptionally low noise density (50nV/√Hz) that extends down to dc.

The INA333 is available in both MSOP-8 and DFN-8 surface-mount packages and is specified over the TA = –40°C to +125°C temperature range.

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V+

 

 

 

 

 

 

7

 

 

 

 

VIN−

2

 

 

 

 

 

RFI Filtered Inputs

150kΩ

150kΩ

 

 

 

 

 

A1

 

 

 

 

 

RFI Filtered Inputs

 

 

 

 

 

 

1

 

 

 

 

 

 

50kΩ

 

 

 

 

R

 

 

 

A3

6

VOUT

G

 

 

 

 

50kΩ

 

 

 

 

 

 

 

 

 

 

 

 

8

 

 

 

 

 

 

RFI Filtered Inputs

150kΩ

150kΩ

 

 

 

 

 

5

 

 

 

 

A2

 

REF

 

 

3

 

 

 

VIN+

 

 

 

 

 

RFI Filtered Inputs

 

INA333

 

 

 

 

 

4

 

 

 

 

 

 

V−

100kΩ

 

 

 

 

 

G = 1 +

 

 

 

 

 

 

RG

 

 

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 © 2008, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

 

Instruments standard warranty. Production processing does not

 

necessarily include testing of all parameters.

 

INA333

SBOS445–JULY 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)

PRODUCT

PACKAGE-LEAD

PACKAGE DESIGNATOR

PACKAGE MARKING

INA333

MSOP-8

DGK

I333

DFN-8(2)

DRG

I333A

 

(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 Q4, 2008.

ABSOLUTE MAXIMUM RATINGS(1)

 

 

INA333

UNIT

Supply voltage

 

+7

V

Analog input voltage range(2)

(V–) – 0.3 to (V+) + 0.3

V

Output short-circuit(3)

 

Continuous

 

Operating temperature range, TA

–40 to +150

°C

Storage temperature range, TA

–65 to +150

°C

Junction temperature, TJ

+150

°C

 

Human body model (HBM)

4000

V

ESD rating

Charged device model (CDM)

1000

V

 

Machine model (MM)

200

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 implied.

(2)Input terminals are diode-clamped to the power-supply rails. Input signals that can swing more than 0.3V beyond the supply rails should be current limited to 10mA or less.

(3)Short-circuit to ground.

PIN CONFIGURATIONS

 

 

DGK PACKAGE

 

 

DRG PACKAGE

 

 

 

 

MSOP-8

 

 

 

 

 

 

 

 

DFN-8

 

 

 

 

(TOP VIEW)

 

 

(TOP VIEW)

 

 

 

 

 

 

 

 

 

 

RG

 

 

 

RG

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

8

 

 

 

 

 

VIN−

 

 

 

RG

1

Exposed

 

8

RG

 

 

 

 

2

 

7

V+

 

 

 

 

 

 

 

 

VIN−

2

Thermal

7

V+

 

 

 

 

VIN+

3

 

6

VOUT

 

Die Pad

 

 

VOUT

 

 

 

 

VIN+

3

on

6

 

 

 

 

V−

4

 

5

REF

 

Underside

 

 

 

 

4

 

5

 

 

 

 

 

V−

 

 

REF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INA333

 

 

 

 

 

 

 

 

 

 

 

 

INA333

 

 

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INA333

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SBOS445–JULY 2008

ELECTRICAL CHARACTERISTICS: VS = +1.8V to +5.5V

 

 

 

 

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

 

 

 

At TA = +25°C, RL = 10kΩ, VREF = 0, and G = 1, unless otherwise noted.

 

 

 

 

 

 

 

 

INA333

 

 

PARAMETER

 

TEST CONDITIONS

MIN

TYP

MAX

UNIT

INPUT(1)

 

 

 

 

 

 

Offset voltage, RTI(2)

VOSI

 

 

±10 ±25/G

±25 ±75/G

μV

vs Temperature

 

 

 

 

±0.1 ±0.5/G

μV/°C

vs Power supply

PSR

1.8V ≤ VS ≤ 5.5V

 

±1 ±5/G

±5 ±15/G

μV/V

Long-term stability

 

 

 

See note (3)

 

 

Turn-on time to specified VOSI

 

 

See Typical characteristics

 

Impedance

 

 

 

 

 

 

Differential

ZIN

 

 

100 || 3

 

GΩ || pF

Common-mode

ZIN

 

 

100 || 3

 

GΩ || pF

Common-mode voltage range

VCM

VO = 0V

(V–) + 0.1

 

(V+) – 0.1

V

Common-mode rejection

CMR

DC to 60Hz

 

 

 

 

G = 1

 

VCM = (V–) + 0.1V to (V+) – 0.1V

80

90

 

dB

G = 10

 

VCM = (V–) + 0.1V to (V+) – 0.1V

100

110

 

dB

G = 100

 

VCM = (V–) + 0.1V to (V+) – 0.1V

100

115

 

dB

G = 1000

 

VCM = (V–) + 0.1V to (V+) – 0.1V

100

115

 

dB

INPUT BIAS CURRENT

 

 

 

 

 

 

Input bias current

IB

 

 

±70

±200

pA

vs Temperature

 

 

See Typical Characteristic curve

pA/°C

Input offset current

IOS

 

 

±50

±200

pA

vs Temperature

 

 

See Typical Characteristic curve

pA/°C

INPUT VOLTAGE NOISE

 

 

 

 

 

 

Input voltage noise

eNI

G = 100, RS = 0Ω

 

 

 

 

f = 10Hz

 

 

 

50

 

nV/√Hz

f = 100Hz

 

 

 

50

 

nV/√Hz

f = 1kHz

 

 

 

50

 

nV/√Hz

f = 0.1Hz to 10Hz

 

 

 

1

 

μVPP

Input current noise

iN

 

 

 

 

 

f = 10Hz

 

 

 

100

 

fA/√Hz

f = 0.1Hz to 10Hz

 

 

 

2

 

pAPP

GAIN

 

 

 

 

 

 

Gain equation

G

 

 

1 + (100kΩ/RG)

 

V/V

Range of gain

 

 

1

 

1000

V/V

Gain error

 

VS = 5.5V, (V–) + 100mV ≤ VO ≤ (V+) – 100mV

 

 

 

 

G = 1

 

 

 

±0.01

±0.1

%

G = 10

 

 

 

±0.05

±0.25

%

G = 100

 

 

 

±0.07

±0.25

%

G = 1000

 

 

 

±0.25

±0.5

%

(1)Total VOS, Referred-to-input = (VOSI) + (VOSO/G).

(2)RTI = Referred-to-input.

(3)300-hour life test at +150°C demonstrated randomly distributed variation of approximately 1μV.

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ELECTRICAL CHARACTERISTICS: VS = +1.8V to +5.5V (continued)

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

At TA = +25°C, RL = 10kΩ, VREF = 0, and G = 1, unless otherwise noted.

 

 

 

 

INA333

 

 

PARAMETER

 

TEST CONDITIONS

MIN

TYP

MAX

UNIT

GAIN (continued)

 

 

 

 

 

 

Gain vs Temperature

 

 

 

 

 

 

G = 1

 

 

 

±1

±5

ppm/°C

G > 1(4)

 

 

 

±15

±50

ppm/°C

Gain nonlinearity

 

VS = 5.5V, (V–) + 100mV ≤ VO ≤ (V+) – 100mV

 

 

 

 

G = 1 to 1000

 

RL = 10kΩ

 

10

 

ppm

OUTPUT

 

 

 

 

 

 

Output voltage swing from rail(5)

 

VS = 5.5V, RL = 10kΩ

 

See note (5)

50

mV

Capacitive load drive

 

 

 

500

 

pF

Short-circuit current

ISC

Continuous to common

 

–40, +5

 

mA

FREQUENCY RESPONSE

 

 

 

 

 

 

Bandwidth, –3dB

 

 

 

 

 

 

G = 1

 

 

 

150

 

kHz

G = 10

 

 

 

35

 

kHz

G = 100

 

 

 

3.5

 

kHz

G = 1000

 

 

 

350

 

Hz

Slew rate

SR

VS = 5V, VO = 4V Step

 

 

 

 

G = 1

 

 

 

0.16

 

V/μs

G = 100

 

 

 

0.05

 

V/μs

Settling time to 0.01%

tS

 

 

 

 

 

G = 1

 

VSTEP = 4V

 

50

 

μs

G = 100

 

VSTEP = 4V

 

400

 

μs

Settling time to 0.001%

tS

 

 

 

 

 

G = 1

 

VSTEP = 4V

 

60

 

μs

G = 100

 

VSTEP = 4V

 

500

 

μs

Overload recovery

 

50% overdrive

 

75

 

μs

REFERENCE INPUT

 

 

 

 

 

 

RIN

 

 

 

300

 

kΩ

Voltage range

 

 

V–

 

V+

V

POWER SUPPLY

 

 

 

 

 

 

Voltage range

 

 

 

 

 

 

Single

 

 

+1.8

 

+5.5

V

Dual

 

 

±0.9

 

±2.75

V

Quiescent current

IQ

VIN = VS/2

 

50

75

μA

vs Temperature

 

 

 

 

80

μA

TEMPERATURE RANGE

 

 

 

 

 

 

Specified temperature range

 

 

–40

 

+125

°C

Operating temperature range

 

 

–40

 

+150

°C

Thermal resistance

θJA

 

 

 

 

 

MSOP

 

 

 

100

 

°C/W

DFN

 

 

 

65

 

°C/W

(4)Does not include effects of external resistor RG.

(5)See Typical Characteristics curve, Output Voltage Swing vs Output Current (Figure 29).

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SBOS445–JULY 2008

TYPICAL CHARACTERISTICS

At TA = +25°C, RL = 10kΩ, VREF = 0, and G = 1, unless otherwise noted.

INPUT OFFSET VOLTAGE

 

VS = 5.5V

 

 

 

 

 

 

 

 

Population

 

 

 

 

 

 

 

 

 

−25.0

−22.5 −20.0 −17.5 −15.0

−12.5

−10.0 −7.5 −5.0 −2.5 0 2.5 5.0 7.5 10.0

12.5

15.0

17.5

20.0

22.5

25.0

 

 

 

Input Offset Voltage (µV)

 

 

 

 

 

 

Figure 1.

OUTPUT OFFSET VOLTAGE

 

VS = 5.5V

 

 

 

 

 

 

 

Population

 

 

 

 

 

 

 

 

−75.0

−67.5 −60.0 −52.5 −45.0

−37.5

−30.0 −22.5 −15.0 −7.5 0 7.5 15.0 22.5 30.0 37.5

45.0

52.5

60.0

67.5

75.0

 

 

 

Output Offset Voltage (µV)

 

 

 

 

 

Figure 3.

OFFSET VOLTAGE vs COMMON-MODE VOLTAGE

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VS = 1.8V

 

 

 

 

 

 

 

 

 

 

 

 

−5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VS = 5V

 

 

 

 

(µV)

−10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

V

−15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

−20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

−25

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

VCM (V)

Figure 5.

INPUT VOLTAGE OFFSET DRIFT (–40°C to +125°C)

 

VS = 5.5V

 

 

 

 

 

 

Population

 

 

 

 

 

 

 

−0.10

−0.09 −0.08 −0.07 −0.06

−0.05 −0.04 −0.03 −0.02 −0.01 0 0.01 0.02 0.03 0.04 0.05

0.06

0.07

0.08

0.09

0.10

 

 

Input Voltage Offset Drift (µV/°C)

 

 

 

 

 

Figure 2.

OUTPUT VOLTAGE OFFSET DRIFT (–40°C to +125°C)

 

VS = 5.5V

 

 

 

 

 

Population

 

 

 

 

 

 

−0.50

−0.45 −0.40 −0.35 −0.30

−0.25 −0.20 −0.15 −0.10 −0.05 0 0.05 0.10 0.15 0.20 0.25 0.30

0.35

0.40

0.45

0.50

 

 

Output Voltage Offset Drift (µV/°C)

 

 

 

 

Figure 4.

0.1Hz TO 10Hz NOISE

Gain = 1

Noise(1 V/div)

Time (1s/div)

Figure 6.

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Texas Instruments INA333, INA333AIDRGT Datasheet

INA333

SBOS445–JULY 2008

www.ti.com

TYPICAL CHARACTERISTICS (continued)

At TA = +25°C, RL = 10kΩ, VREF = 0, and G = 1, unless otherwise noted.

DCOutputNonlinearityError(%FSR)

0.1Hz TO 10Hz NOISE

Gain = 100

Noise(0.5 V/div)

Time (1s/div)

Figure 7.

NONLINEARITY ERROR

0.012 G = 1000

0.008

G = 100

G = 10

G = 1

0.004

0

−0.004

−0.008

−0.012

0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

VOUT (V)

SPECTRAL NOISE DENSITY

1000

 

 

 

 

1000

 

 

 

Output Noise

 

 

100

 

 

 

 

100

 

Current Noise

 

 

 

 

 

Input Noise

 

 

10

 

 

 

 

10

VoltageNoiseDensity(nV/Hz)√

 

 

 

(Output Noise)

2

 

 

(Input Noise)2 +

CurrentNoiseDensity(fA/√Hz )

Total Input-Referred Noise =

G

 

 

 

 

 

1

 

 

 

 

1

0.1

1

10

100

1k

10k

Frequency (Hz)

Figure 8.

LARGE SIGNAL RESPONSE

Gain = 1

OutputVoltage(1V/div)

Time (25 s/div)

Figure 9.

Figure 10.

LARGE-SIGNAL STEP RESPONSE

SMALL-SIGNAL STEP RESPONSE

Gain = 100

Gain = 1

OutputVoltage(1V/div)

OutputVoltage(50mV/div)

Time (100 s/div)

Time (10 s/div)

Figure 11.

Figure 12.

6

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SBOS445–JULY 2008

TYPICAL CHARACTERISTICS (continued)

At TA = +25°C, RL = 10kΩ, VREF = 0, and G = 1, unless otherwise noted.

SMALL-SIGNAL STEP RESPONSE

 

Gain = 100

 

 

OutputVoltage(50mV/div)

 

 

Time (100 s/div)

 

 

Figure 13.

 

 

STARTUP SETTLING TIME

 

 

 

Gain = 1

 

Supply

 

Supply(1V/div)

VOUT

V

 

V/div)(50

 

 

OUT

Time (50 s/div)

Figure 15.

COMMON-MODE REJECTION RATIO

 

VS = 5.5V

 

 

 

 

 

Population

 

 

 

 

 

 

−100

−90 −80 −70 −60

−50

−40

−30

−20 −10 0 10 20 30 40 50 60 70 80 90

100

 

 

 

 

 

CMRR (µV/V)

 

Figure 17.

SETTLING TIME vs GAIN

10000

Time( s)

1000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.001%

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.01%

 

 

 

 

 

 

 

 

0.1%

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

10

 

 

 

 

 

 

 

 

 

 

 

 

100

 

 

 

 

 

 

 

 

 

 

 

1000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Gain (V/V)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 14.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GAIN vs FREQUENCY

 

 

 

 

 

80

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

G = 1000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

60

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

40

 

G = 100

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Gain(dB)

 

 

G = 10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

G = 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

−20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

−40

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

−60

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10

 

 

 

 

 

 

100

 

 

 

 

 

 

1k

 

 

 

 

 

10k

 

 

 

 

 

100k

1M

Frequency (Hz)

Figure 16.

COMMON-MODE REJECTION RATIO vs TEMPERATURE

 

10

 

 

 

 

 

VS = ±2.75V

 

 

8

 

 

 

 

 

 

 

G = 1

 

 

 

 

VS = ±0.9V

 

 

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

V/V)

4

 

 

 

G = 10

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

µ

 

 

 

 

 

 

 

 

 

CMRR(

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

−2

 

 

 

 

 

 

 

 

 

−4

 

 

 

 

 

 

 

 

 

−6

 

 

 

G = 100,

 

 

 

 

 

 

 

 

G = 1000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

−8

 

 

 

 

 

 

 

 

 

−10

 

 

 

 

 

 

 

 

 

−50

−25

0

25

50

75

100

125

150

 

 

 

 

Temperature (°C)

 

 

 

Figure 18.

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