LT1997IMS-3#TRPBF,LT1997IMS-3#TRPBF pdf中文资料,LT1997IMS-3#TRPBF引脚图,LT1997IMS-3#TRPBF电路-Datasheet-电子工程世界

FEATURES

n

LT1997-3

Precision, Wide Voltage

Range Gain Selectable

Amplifier

DESCRIPTION

The

LT

®

1997-3

combines a precision operational amplifier

with highly-matched resistors to form a one-chip solution

for accurately amplifying voltages. Gains from –13 to +14

with accuracy of 0.006% (60ppm) can be achieved using

no external components. The LT1997-3 is particularly well

suited for use as a difference amplifier, where the excellent

resistor matching results in a common mode rejection

ratio of greater than 91dB.

The amplifier features a 60μV maximum input offset voltage

and a –3dB bandwidth of 1.1MHz (Gain = 1). The LT1997-3

operates from any supply voltage from 3.3V to 50V and

draws only 350μA supply current. The output typically

swings to within 100mV of either supply rail.

The resistors maintain their excellent matching over

temperature; the matching temperature coefficient is

guaranteed less than 1ppm/°C. The resistors are extremely

linear with voltage, resulting in a gain nonlinearity of less

than 2ppm.

The LT1997-3 is fully specified at 5V and ±15V supplies

and from –40°C to 125°C. The device is available in space

saving 16-lead MSOP and 4mm × 4mm DFN14 packages.

All registered trademarks and trademarks are the property of their respective owners.

Pin Configurable as a Difference Amplifier, Inverting

Amplifier or Noninverting Amplifier

91dB Minimum DC CMRR (Gain = 1)

65dB AC CMRR (at 100kHz, Gain = 1)

0.006% (60ppm) Maximum Gain Error (Gain = 1)

1ppm/°C Maximum Gain Error Drift

2ppm Maximum Gain Nonlinearity

±160V Common Mode Voltage Range

Wide Supply Voltage Range: 3.3V to 50V

Rail-to-Rail Output

350µA Supply Current

60µV Maximum Op Amp Offset Voltage

1.1MHz –3dB Bandwidth (Gain = 1)

Low-Power Shutdown: 20µA

Space-Saving MSOP and DFN Packages

APPLICATIONS

n

High Side or Low Side Current Sensing

Bidirectional Wide Common Mode Range Current

Sensing

High Voltage to Low Voltage Level Translation

Industrial Data-Acquisition Front-Ends

Replacement for Isolation Circuits

Differential to Single-Ended Conversion

TYPICAL APPLICATION

Gain = 1 Difference Amplifier

V

SOURCE

= –28V TO 26.5V

–INA –INB –INC

2.5k

NUMBER OF UNITS

7.5k

22.5k

800

600

400

200

0

–30

15V

V+ LT1997-3

Typical Distribution of CMRR (G = 1)

1200

1000

V

S

= ±15V

V

CM

= –28V TO +26.5V

4625 UNITS

FROM 3 RUNS

7.5k

2.5k

LOAD

+INA +INB +INC

SHDN

V–

–15V

19973 TA01a

Document Feedback

For more information

www.analog.com

+

45k

REF2

REF1

R

SENSE

1

R

C

1

22.5k

–

22.5k

OUT

V

OUT

= ±1mV/mA

–20

–10

0

10

CMRR (µV/V = ppm)

20

30

19973 TA01b

Rev A

1

LT1997-3

ABSOLUTE MAXIMUM RATINGS

(Note 1)

Supply Voltages (V

+

to V

–

) ........................................60V

+INA, –INA (Note 2) ......................................... V

–

±160V

+INB, –INB, +INC, –INC

(Note 2) .............................. (V

–

+ 80V) to (V

–

– 0.3V)

REF, REF1, REF2..................... (V

–

+ 60V) to (V

–

– 0.3V)

SHDN

..................................... (V

+

+ 0.3V) to (V

–

– 0.3V)

Output Current (Continuous) (Note 6) ....................50mA

Output Short-Circuit Duration

(Note 3) ..........................................Thermally Limited

Temperature Range (Notes 4, 5)

LT1997I-3 ................................................–40 to 85°C

LT1997H-3 ............................................. –40 to 125°C

Maximum Junction Temperature .......................... 150°C

Storage Temperature Range ......................–65 to 150°C

MSOP Lead Temperature (Soldering, 10 sec)........ 300°C

PIN CONFIGURATION

TOP VIEW

+INA

+INB

NC

+INC

SHDN

REF

1

3

4

5

6

7

15

V–

14 –INA

12 –INB

11 NC

10 –INC

9 V+

8

OUT

TOP VIEW

+INA 1

+INB 3

+INC

REF1

REF2

V–

5

6

7

8

16 –INA

14 –INB

12

11

10

9

–INC

V+

SHDN

OUT

MS PACKAGE

VARIATION: MS16 (12)

16-LEAD PLASTIC MSOP

T

JMAX

= 150°C,

θ

JA

= 130°C/W

DF PACKAGE

14(12)-LEAD (4mm

×

4mm) PLASTIC DFN

T

JMAX

= 150°C,

θ

JA

= 45°C/W ,

θ

JC

= 3°C/W

EXPOSED PAD (PIN 15) IS V

–

, MUST BE SOLDERED TO PCB

ORDER INFORMATION

LEAD FREE FINISH

LT1997IDF-3#PBF

LT1997HDF-3#PBF

LT1997IMS-3#PBF

LT1997HMS-3#PBF

TAPE AND REEL

LT1997IDF-3#TRPBF

LT1997HDF-3#TRPBF

LT1997IMS-3#TRPBF

LT1997HMS-3#TRPBF

http://www.linear.com/product/LT1997-3#orderinfo

PART MARKING*

19973

PACKAGE DESCRIPTION

14-Lead (4mm × 4mm) Plastic DFN

16-Lead Plastic MSOP

SPECIFIED

TEMPERATURE RANGE

–40°C to 85°C

–40°C to 125°C

–40°C to 85°C

–40°C to 125°C

*The temperature grade is identified by a label on the shipping container. Consult ADI Marketing for parts specified with wider operating temperature ranges.

Parts ending with PBF are RoHS and WEEE compliant.

For more information on lead free part marking, go to:

http://www.linear.com/leadfree/

For more information on tape and reel specifications, go to:

http://www.linear.com/tapeandreel/.

Rev A

2

For more information

www.analog.com

LT1997-3

The

l

denotes the specifications which apply over the full operating

temperature range, –40°C < T

A

< 85°C for I-grade parts, –40°C < T

A

< 125°C for H-grade parts, otherwise specifications are at

T

A

= 25°C. Difference Amplifier Configuration, V

+

= 15V, V

–

= –15V, V

CM

= V

OUT

= V

REF

= V

REF1

= V

REF2

= 0V. V

CMOP

is the common

mode voltage of the internal op amp.

SYMBOL PARAMETER

∆G

Gain Error

CONDITIONS

V

OUT

= ±10V

G = 1

l

ELECTRICAL CHARACTERISTICS

MIN

TYP

±0.001

MAX

±0.006

±0.012

±0.015

±0.02

±0.03

±0.04

±1

±2

±3

±60

±200

±1.5

5

15

3

10

26

17.4

14.5

52

17.4

5.8

UNITS

%

ppm/°C

ppm

µV

µV/°C

nA

kΩ

dB

V

G = 3

l

G = 9

l

±0.002

l

∆G/∆T

GNL

V

OS

∆V

OS

/∆T

I

B

I

OS

R

IN

Gain Drift vs Temperature (Note 6)

Gain Nonlinearity

Op Amp Offset Voltage (Note 9)

Op Amp Offset Voltage Drift (Note 6)

Op Amp Input Bias Current

Op Amp Input Offset Current

Input Impedance (Note 8)

V

OUT

= ±10V

V

OUT

= ±10V

V

–

< V

CMOP

< V

+

– 1.75V

±0.2

±1

±20

l

V

–

< V

CMOP

< V

+

– 1.75V

V

–

+ 0.25V < V

CMOP

< V

+

– 1.75V

l

±0.5

–5

–15

–3

–10

19

12.6

10.5

38

12.6

4.2

91

87

90

86

96

94

91

87

83

80

81

77

81

78

90

86

96

94

–30

–160

–15

±2

±0.5

22.5

15

12.5

45

15

5

106

99

112

101

94

91

98

103

V

–

+ 0.25V < V

CMOP

< V

+

– 1.75V

l

CMRR

Common Mode Rejection Ratio,

MS16 Package

Common Mode

G = 1

G = 3

G = 9

Differential

G = 1

G = 3

G = 9

G = 1, V

CM

= –28V to +26.5V

G = 3, V

CM

= –15V to +17.6V

l

G = 9, V

CM

= –15V to +14.7V

l

CMRR

Common Mode Rejection Ratio,

DF14 Package

G = 1, V

CM

= –28V to +26.5V

l

G = 1, V

CM

= –90V to +90V, +INB = –INB = 0V,

V

S

= ±25V

G = 1, V

CM

= –120V to +120V, +INC = –INC = 0V,

V

S

= ±25V, T

A

= –40°C to 125°C

G = 1, V

CM

= –160V to +160V, +INC = –INC = 0V,

V

S

= ±25V, T

A

= –40°C to 85°C

G = 3, V

CM

= –15V to +17.6V

G = 9, V

CM

= –15V to +14.7V

l

V

CM

Input Voltage Range (Note 7)

+INA/–INA

+INA/–INA, +INC/–INC Connected to Ground

+INB/–INB

+INC/–INC

l

26.5

160

17.6

14.7

Rev A

For more information

www.analog.com

3

LT1997-3

The

l

denotes the specifications which apply over the full operating

temperature range, –40°C < T

A

< 85°C for I-grade parts, –40°C < T

A

< 125°C for H-grade parts, otherwise specifications are at

T

A

= 25°C. Difference Amplifier Configuration, V

+

= 15V, V

–

= –15V, V

CM

= V

OUT

= V

REF

= V

REF1

= V

REF2

= 0V. V

CMOP

is the common

mode voltage of the internal op amp.

SYMBOL PARAMETER

∆R/R

Reference Divider Matching Error

∆R

R

–R

=

REF1 REF2

R

⎛

R

REF1

+

R

REF2

⎞

⎜

⎟

⎝

⎠

2

Power Supply Rejection Ratio

Input Referred Noise Voltage Density

CONDITIONS

Available in MS16 Package Only

l

ELECTRICAL CHARACTERISTICS

MIN

TYP

±0.001

MAX

±0.006

±0.012

UNITS

%

PSRR

e

ni

Input Referred Noise Voltage

V

OL

V

OH

I

SC

SR

BW

t

S

Output Voltage Swing Low (Referred

to V

–

)

Output Voltage Swing High (Referred

to V

+

)

Short-Circuit Output Current

Slew Rate

Small Signal –3dB Bandwidth

Settling Time

V

S

= ±1.65V to ±25V, V

CM

= V

OUT

= Mid-Supply

(Note 9)

f = 1kHz

G = 1

G = 3

G = 9

f = 0.1Hz to 10Hz

G = 1

G = 3

G = 9

No Load

I

SINK

= 5mA

No Load

I

SOURCE

= 5mA

50Ω to V

+

50Ω to V

–

∆V

OUT

= ±5V

G = 1

G = 3

G = 9

G = 1

0.1%, ∆V

OUT

= 10V

0.01%, ∆V

OUT

= 10V

G = 3

0.1%, ∆V

OUT

= 10V

0.01%, ∆V

OUT

= 10V

G = 9

0.1%, ∆V

OUT

= 10V

0.01%, ∆V

OUT

= 10V

l

114

124

50

30

22

1.4

1

0.8

100

280

100

530

28

30

0.75

1100

700

300

14.6

95

13.6

29

13.8

29

dB

nV/√Hz

µV

P-P

µV

P-P

µV

P-P

mV

mA

V/µs

kHz

µs

V

µs

V

µA

l

150

500

180

900

10

0.45

V

S

t

ON

V

IL

V

IH

I

SHDN

I

S

Supply Voltage

l

3

3.3

16

50

–2.5

Turn-On Time

SHDN

Input Logic Low (Referred to V

+

)

SHDN

Input Logic High (Referred to V

+

)

SHDN

Pin Current

Supply Current

Active, V

SHDN

≥ V

+

– 1.2V

Active, V

SHDN

≥ V

+

– 1.2V

Shutdown, V

SHDN

≤ V

+

– 2.5V

Shutdown, V

SHDN

≤ V

+

– 2.5V

l

–1.2

–10

350

20

–15

400

600

25

70

l

Rev A

4

For more information

www.analog.com

LT1997-3

The

l

denotes the specifications which apply over the full operating

temperature range, –40°C < T

A

< 85°C for I-grade parts, –40°C < T

A

< 125°C for H-grade parts, otherwise specifications are at

T

A

= 25°C. Difference Amplifier Configuration, V

+

= 5V, V

–

= 0V, V

CM

= V

OUT

= V

REF

= V

REF1

= V

REF2

= Mid-Supply. V

CMOP

is the

common mode voltage of the internal op amp.

SYMBOL PARAMETER

∆G

Gain Error

CONDITIONS

V

OUT

= 1V to 4V

G = 1

l

ELECTRICAL CHARACTERISTICS

MIN

TYP

±0.001

MAX

±0.006

±0.012

±0.015

±0.02

±0.03

±0.04

±1

±60

±200

±1.5

5

15

3

10

26

17.4

14.5

52

17.4

5.8

UNITS

%

ppm/°C

ppm

µV

µV/°C

nA

kΩ

dB

%

G = 3

l

G = 9

l

±0.002

l

∆G/∆T

GNL

V

OS

∆V

OS

/∆T

I

B

I

OS

R

IN

Gain Drift vs Temperature (Note 6)

Gain Nonlinearity

Op Amp Offset Voltage (Note 9)

Op Amp Offset Voltage Drift (Note 6)

Op Amp Input Bias Current

Op Amp Input Offset Current

Input Impedance (Note 8)

V

OUT

= 1V to 4V

V

OUT

= 1V to 4V

V

–

< V

CMOP

< V

+

– 1.75V

±0.2

±1

±20

l

V

–

< V

CMOP

< V

+

– 1.75V

V

–

+ 0.25V < V

CMOP

< V

+

– 1.75V

l

±0.5

–5

–15

–3

–10

19

12.6

10.5

38

12.6

4.2

90

88

90

87

96

94

90

88

90

87

96

94

±2

±0.5

22.5

15

12.5

45

15

5

100

103

108

96

101

107

±0.001

V

–

+ 0.25V < V

CMOP

< V

+

– 1.75V

l

CMRR

Common Mode Rejection Ratio,

MS16 Package

Common Mode

G = 1

G = 3

G = 9

Differential

G = 1

G = 3

G = 9

G = 1, V

CM

= –2.5V to +4.0V

G = 3, V

CM

= 0V to +3.5V

l

G = 9, V

CM

= 0V to +3.3V

l

CMRR

Common Mode Rejection Ratio,

DF14 Package

G = 1, V

CM

= –2.5V to +4.0V

l

G = 3, V

CM

= 0V to +3.5V

l

G = 9, V

CM

= 0V to +3.3V

l

∆R/R

Reference Divider Matching Error

∆R

R

–R

=

REF1 REF2

R

⎛

R

REF1

+

R

REF2

⎞

⎜

⎟

⎝

⎠

2

Power Supply Rejection Ratio

Input Referred Noise Voltage Density

Available in MS16 Package Only

l

±0.006

±0.012

PSRR

e

ni

V

S

= ±1.65V to ±25V, V

CM

= V

OUT

= Mid-Supply

(Note 9)

f = 1kHz

G = 1

G = 3

G = 9

l

114

124

50

30

22

dB

nV/√Hz

Rev A

For more information

www.analog.com

5

参数名称	属性值
放大器类型	通用
电路数	1
输出类型	满摆幅
压摆率	0.75 V/µs
-3db 带宽	1.1MHz
电流 - 电源	350µA
电压 - 电源，单/双（±）	3 V ~ 50 V，±1.5V ~ 25 V
工作温度	-40°C ~ 85°C
安装类型	表面贴装
封装/外壳	16-TFSOP（0.118"，3.00mm 宽），12 引线
供应商器件封装	16-MSOP

	LT1997IMS-3#TRPBF	LT1997HDF-3#TRPBF	LT1997HMS-3#TRPBF	LT1997IDF-3#TRPBF	LT1997HDF-3#PBF	LT1997IDF-3#PBF	LT1997IMS-3#PBF	LT1997HMS-3#PBF
描述	IC OP AMP RR 1.1MHZ 16MSOP	IC OP AMP RR 1.1MHZ 14DFN	IC OP AMP RR 1.1MHZ 16MSOP	IC OP AMP RR 1.1MHZ 14DFN	IC OP AMP RR 1.1MHZ 14DFN	IC OPAMP DIFF WIDE VOLTAGE RANGE	IC OP AMP RR 1.1MHZ 16MSOP	IC OPAMP DIFF WIDE VOLTAGE RANGE
放大器类型	通用	通用	通用	通用	通用	通用	通用	通用
电路数	1	1	1	1	1	1	1	1
输出类型	满摆幅	满摆幅	满摆幅	满摆幅	满摆幅	满摆幅	满摆幅	满摆幅
压摆率	0.75 V/µs	0.75 V/µs	0.75 V/µs	0.75 V/µs	0.75 V/µs	0.75 V/µs	0.75 V/µs	0.75 V/µs
-3db 带宽	1.1MHz	1.1MHz	1.1MHz	1.1MHz	1.1MHz	1.1MHz	1.1MHz	1.1MHz
电流 - 电源	350µA	350µA	350µA	350µA	350µA	350µA	350µA	350µA
电压 - 电源，单/双（±）	3 V ~ 50 V，±1.5V ~ 25 V	3 V ~ 50 V，±1.5V ~ 25 V	3 V ~ 50 V，±1.5V ~ 25 V	3 V ~ 50 V，±1.5V ~ 25 V	3 V ~ 50 V，±1.5V ~ 25 V	3 V ~ 50 V，±1.5V ~ 25 V	3 V ~ 50 V，±1.5V ~ 25 V	3 V ~ 50 V，±1.5V ~ 25 V
工作温度	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C
封装/外壳	16-TFSOP（0.118"，3.00mm 宽），12 引线	14-WFDFN 裸露焊盘，12 引线	16-TFSOP（0.118"，3.00mm 宽），12 引线	14-WFDFN 裸露焊盘，12 引线	14-WFDFN 裸露焊盘，12 引线	14-WFDFN 裸露焊盘，12 引线	16-TFSOP（0.118"，3.00mm 宽），12 引线	16-TFSOP（0.118"，3.00mm 宽），12 引线
供应商器件封装	16-MSOP	14-DFN（4x4）	16-MSOP	14-DFN（4x4）	14-DFN（4x4）	14-DFN（4x4）	16-MSOP	16-MSOP
安装类型	表面贴装	表面贴装	-	表面贴装	表面贴装	表面贴装	表面贴装	表面贴装

LT1997IMS-3#TRPBF

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