LT5400ACMS8E-1 [Linear]

Quad Matched Resistor Network Long-Term Stability: <2ppm at 2000 Hrs; 四匹配的电阻网络长期稳定性： \u003c 2ppm的在2000小时


型号：	LT5400ACMS8E-1
厂家：	Linear
描述：	Quad Matched Resistor Network Long-Term Stability: <2ppm at 2000 Hrs 四匹配的电阻网络长期稳定性： \u003c 2ppm的在2000小时
文件：	总8页 (文件大小：199K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

LT5400

Quad Matched

Resistor Network

FEATURES

DESCRIPTION

The LT^®5400 is a quad resistor network with excellent

matching speciﬁcations over the entire temperature

range.

Excellent Matching

– A-Grade: 0.01% Matching

– B-Grade: 0.025% Matching

0.2ppm/°C Matching Temperature Drift

Allfourresistorscanbeaccessedandbiasedindependently,

making the LT5400 a convenient and versatile choice for

any application that can beneﬁt from matched resistors.

±±5ꢀ Operating ꢀoltage (±80ꢀ Abs Maxꢁ

8ppm/°C Absolute Resistor ꢀalue Temperature Drift

Long-Term Stability: <2ppm at 2000 Hrs

Theseresistornetworksprovidepreciseratiometricstability

required in highly accurate difference ampliﬁers, voltage

references and bridge circuits.

–55°C to 150°C Operating Temperature

8-Lead MSOP Package

The LT5400 is available in a space-saving 8-pin MSOP

package, and is speciﬁed over the temperature range of

–55°C to 150°C.

APPLICATIONS

Difference Ampliﬁer

Reference Divider

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

Precision Summing/Subtracting

TYPICAL APPLICATION

Difference Ampliﬁer

Distribution of Matching Drift

LT5400

–

INPUTS

REF

5400 TA01a

–1 –0.8–0.6–0.4–0.2

0.2 0.4 0.6 0.8

ppm/°C

5400 G01

5400f

LT5400

ABSOLUTE MAXIMUM RATINGS

PIN CONFIGURATION

(Note 1)

TOP VIEW

Total ꢀoltage (Across Any 2 Pinsꢁ (Note 2ꢁ.……….±80ꢀ

Power Dissipation (Each Resistorꢁ (Note 3ꢁ ....... 800mW

Operating Temperature Range (Note 4ꢁ

LT5400C .............................................. –40°C to 85°C

LT5400I ............................................... –40°C to 85°C

LT5400H............................................ –40°C to 125°C

LT5400MP ......................................... –55°C to 150°C

Speciﬁed Temperature Range (Note 4ꢁ

MS8E PACKAGE

8-LEAD PLASTIC MSOP

= 40°C/W, θ = 10°C/W

EXPOSED PAD (PIN 9ꢁ IS FLOATING

LT5400C .................................................. 0°C to ±0°C

LT5400I ............................................... –40°C to 85°C

LT5400H............................................ –40°C to 125°C

LT5400MP ......................................... –55°C to 150°C

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

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

AVAILABLE OPTIONS

PART NUMBER

LT5400-1

R2 = R3 (Ω)

10k

R1 = R4 (Ω)

10k

RESISTOR RATIO

1:1

LT5400-2

100k

1:1

LT5400-3

10k

100k

1:10

5400f

LT5400

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

LTFꢀR

PACKAGE DESCRIPTION

8-Lead Plastic MSOP

SPECIFIED TEMPERATURE RANGE

0°C to ±0°C

LT5400ACMS8E-1#PBF

LT5400BCMS8E-1#PBF

LT5400AIMS8E-1#PBF

LT5400BIMS8E-1#PBF

LT5400AHMS8E-1#PBF

LT5400BHMS8E-1#PBF

LT5400BMPMS8E-1#PBF

LT5400ACMS8E-2#PBF

LT5400ACMS8E-1#TRPBF

LT5400BCMS8E-1#TRPBF

LT5400AIMS8E-1#TRPBF

LT5400BIMS8E-1#TRPBF

LT5400AHMS8E-1#TRPBF

LT5400BHMS8E-1#TRPBF

LT5400BMPMS8E-1#TRPBF

LT5400ACMS8E-2#TRPBF

LTFꢀR

0°C to ±0°C

LTFꢀR

–40°C to 85°C

LTFꢀR

–40°C to 85°C

LTFꢀR

–40°C to 125°C

–55°C to 150°C

0°C to ±0°C

LTFꢀR

LTGBG

LT5400BCMS8E-2#PBF

LT5400AIMS8E-2#PBF

LT5400BIMS8E-2#PBF

LT5400AHMS8E-2#PBF

LT5400BHMS8E-2#PBF

LT5400BMPMS8E-2#PBF

LT5400ACMS8E-3#PBF

LT5400BCMS8E-3#PBF

LT5400AIMS8E-3#PBF

LT5400BIMS8E-3#PBF

LT5400BHMS8E-3#PBF

LT5400BCMS8E-2#TRPBF

LT5400AIMS8E-2#TRPBF

LT5400BIMS8E-2#TRPBF

LT5400AHMS8E-2#TRPBF

LT5400BHMS8E-2#TRPBF

LT5400BMPMS8E-2#TRPBF

LT5400ACMS8E-3#TRPBF

LT5400BCMS8E-3#TRPBF

LT5400AIMS8E-3#TRPBF

LT5400BIMS8E-3#TRPBF

LT5400BHMS8E-3#TRPBF

LTGBG

LTGBH

8-Lead Plastic MSOP

0°C to ±0°C

–40°C to 85°C

–40°C to 125°C

–55°C to 150°C

0°C to ±0°C

–40°C to 85°C

–40°C to 125°C

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

Consult LTC Marketing for information on non-standard lead based ﬁnish parts.

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/

5400f

LT5400

ELECTRICAL CHARACTERISTICS ^Thel denotes the speciﬁcations which apply over the full speciﬁed

temperature range, otherwise speciﬁcations are at T_A= 25°C.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Resistor Matching Ratio (Any Resistor to Any

Other Resistorꢁ

A-Grade

±0.010

±0.0125

∆R/R

T = 0°C to ±0°C

T = –40°C to 85°C

T = –40°C to 125°C

B-Grade

±0.025

±0.005

±0.015

±1

(∆R/Rꢁ

Matching for CMRR

A-Grade (Note 6ꢁ

B-Grade (Note 6ꢁ

(Note 5ꢁ

CMRR

Resistor Matching Ratio Temperature Drift

Resistor ꢀoltage Coefﬁcient

Excess Current Noise

±0.2

<0.1

<–55

ppm/°C

ppm/ꢀ

(∆R/Rꢁ/∆T

∆R

Mil-Std-202 Method 308

A-Grade

Absolute Resistor Tolerance

±±.5

±15

B-Grade

Distributed Capacitance

Resistor to Exposed Pad

Resistor to Resistor

5.5

1.4

Absolute Resistor ꢀalue Temperature Drift

Resistor Matching Ratio Long-Term Drift

Resistor Matching Ratio Moisture Resistance

(Note 5ꢁ

–10

ppm/°C

ppm

∆R/∆T

35°C 2000Hours

85°C 85%R.H. 168Hours

ppm

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 5: This parameter is not 100% tested.

Note 6: (∆R/Rꢁ (Matching for CMRRꢁ is a metric for the contribution

of error from the LT5400 when conﬁgured in a difference ampliﬁer (see

Difference Ampliﬁer in Typical Applicationsꢁ:

CMRR

Note 2: The instantaneous difference between the highest voltage applied

to any pin and the lowest voltage applied to any other pin should not

exceed the Absolute Maximum Rating. This includes the voltage across

any resistor, the voltage across any pin with respect to the exposed pad of

the package, and the voltage across any two unrelated pins.

R2 R3

R1 R4



 

 



∆R/R

•

–

•

(

)





 





CMRR

The resistor contribution to CMRR can then be calculated in the following

way:





Note 3: In order to keep the junction temperature within the Absolute

Maximum Rating, maximum power dissipation should be derated at

elevated ambient temperatures.

4 •





CMRR = ∆R/R

•

(

)





CMRR

R2 R3

2 +









R1 R4

Note 4: The LT5400C is guaranteed functional over the operating

temperature range of –40°C to 85°C. The LT5400C is designed,

characterized and expected to meet speciﬁed performance from –40°C to

85°C but is not tested or QA sampled at these temperatures. The LT5400I

is guaranteed to meet speciﬁed performance from –40°C to 85°C. The

LT5400H is guaranteed to meet speciﬁed performance from –40°C to

125°C and is 100% tested at these temperature extremes. The LT5400MP

is guaranteed to meet speciﬁed performance from –55°C to 150°C and is

100% tested at these temperature extremes.

For LT5400 options with resistor ratio 1:1, the resistor contribution to

CMRR can be simpliﬁed:

CMRR ≈ (∆R/Rꢁ

CMRR

5400f

LT5400

TYPICAL PERFORMANCE CHARACTERISTICS

Distribution of Matching Drift

Change in Matching vs Time

–1

–2

–3

–4

–5

–1 –0.8–0.6–0.4–0.2 0 0.2 0.4 0.6 0.8

ppm/°C

400

800

1200

1600

2000

TIME (HOURS)

5400 G02

5400 G01

APPLICATIONS INFORMATION

Where to Connect the Exposed Pad

regardless of which resistor dissipates more power. The

junction temperature must be kept within the Absolute

Maximum Rating. At elevated ambient temperatures, this

places a limit on the maximum power dissipation.

The exposed pad is not DC connected to any resistor

terminal. Its main purpose is to reduce the internal tem-

perature rise when the application calls for large amounts

of dissipated power in the resistors. The exposed pad can

be tied to any voltage (such as groundꢁ as long as the

absolute maximum ratings are observed.

In addition to limiting the maximum power dissipation,

the maximum voltage across any two pins must also be

kept less than the absolute maximum rating.

There is capacitive coupling between the resistors and the

exposed pad, as speciﬁed in the Electrical Characteristics

table. To avoid interference, do not tie the exposed pad to

noisy signals or noisy grounds.

ESD

The LT5400 can withstand up to ±1kꢀ of electrostatic

discharge (ESD, human bodyꢁ. To achieve the highest

precisionmatching,theLT5400isdesignedwithoutexplicit

ESD internal protection diodes. ESD beyond this voltage

can damage or degrade the device including causing

pin-to-pin shorts.

Connecting the exposed pad to a quiet AC ground is

recommended as it acts as an AC shield and reduces the

amount of resistor-resistor capacitance.

Thermal Considerations

To protect the LT5400 against large ESD strikes, external

protection can be added using diodes to the circuit supply

rails or bidirectional Zeners to ground (Figure 1ꢁ.

Each resistor is rated for relatively high power dissipation,

as listed in the Absolute Maximum Ratings section of

this data sheet. To calculate the internal temperature rise

inside the package, add together the power dissipated in

all of the resistors, and multiply by the thermal resistance

–

BAV99

LT5400

EXTERNAL

CONNECTOR

EXTERNAL

CONNECTOR

coefﬁcient of the package (θ or θ as applicableꢁ.

UMZ36K

For example, if each resistor dissipates 250mW, for a total

of 1W, the total temperature rise inside the package equals

40°C. All 4 resistors will be at the same temperature,

5400 F01

Figure 1

5400f

LT5400

TYPICAL APPLICATIONS

Difference Ampliﬁer

LT5400

–

INPUTS

5400 TA02

THIS CIRCUIT CAN BE IMPLEMENTED USING ANY LT5400 RESISTOR OPTION

Reference Divider with Op Amp Input Bias Current Balancing

LT5400-1

–

REF/2

REF

5400 TA03

THIS CIRCUIT CAN BE IMPLEMENTED USING ANY LT5400

RESISTOR OPTION THAT HAS A RESISTOR RATIO OF 1:1

Reference Divide-by-4

LT5400-1

REF

–

REF/4

5400 TA04

THIS CIRCUIT CAN BE IMPLEMENTED USING ANY LT5400

RESISTOR OPTION THAT HAS A RESISTOR RATIO OF 1:1

5400f

LT5400

PACKAGE DESCRIPTION

MS8E Package

8-Lead Plastic MSOP, Exposed Die Pad

(Reference LTC DWG # 05-08-1662 Rev Iꢁ

BOTTOM VIEW OF

EXPOSED PAD OPTION

1.88

(.074)

1.68

0.29

REF

1.88 ± 0.102

(.074 ± .004)

0.889 ± 0.127

(.035 ± .005)

(.066)

0.05 REF

DETAIL “B”

5.23

(.206)

MIN

3.20 – 3.45

(.126 – .136)

1.68 ± 0.102

CORNER TAIL IS PART OF

THE LEADFRAME FEATURE.

FOR REFERENCE ONLY

(.066 ± .004)

DETAIL “B”

NO MEASUREMENT PURPOSE

3.00 ± 0.102

(.118 ± .004)

(NOTE 3)

0.65

(.0256)

BSC

0.52

(.0205)

REF

0.42 ± 0.038

(.0165 ± .0015)

7 6

TYP

RECOMMENDED SOLDER PAD LAYOUT

3.00 ± 0.102

(.118 ± .004)

(NOTE 4)

4.90 ± 0.152

(.193 ± .006)

DETAIL “A”

0.254

(.010)

0° – 6° TYP

GAUGE PLANE

0.53 ± 0.152

(.021 ± .006)

1.10

(.043)

MAX

0.86

(.034)

REF

DETAIL “A”

0.18

(.007)

SEATING

PLANE

0.22 – 0.38

(.009 – .015)

TYP

0.1016 ± 0.0508

(.004 ± .002)

0.65

(.0256)

BSC

MSOP (MS8E) 0910 REV I

NOTE:

1. DIMENSIONS IN MILLIMETER/(INCH)

2. DRAWING NOT TO SCALE

3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS.

MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE

4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.

INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE

5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX

6. EXPOSED PAD DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH ON E-PAD

SHALL NOT EXCEED 0.254mm (.010") PER SIDE.

5400f

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-

tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.

LT5400

TYPICAL APPLICATION

Precision Single-Ended to Differential Conversion

LT5400

–

IN +

–

OUTPUT

5400 TA05

RELATED PARTS

PART NUMBER

LT1991

DESCRIPTION

COMMENTS

Precision Difference Ampliﬁer

0.04% Resistor Matching,100µA Op Amp

±250ꢀ Input Range

LT1990

High ꢀoltage Difference Ampliﬁer

Instrumentation Ampliﬁer

LT116±

>90dB CMRR

5400f

LT 0411 • PRINTED IN USA

LinearTechnology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-±41±

●

 LINEAR TECHNOLOGY CORPORATION 2011

(408ꢁ 432-1900 FAX: (408ꢁ 434-050± www.linear.com

LT5400ACMS8E-1 [Linear]

相关型号：

SI9130DB

SI9135LG-T1

SI9135LG-T1-E3

SI9135_11

SI9136_11

SI9130CG-T1-E3

SI9130LG-T1-E3

SI9130_11

SI9137

SI9137DB

SI9137LG

SI9122E