LT1638CDD#TRPBF_技术文档

LT1638/LT1639

1.2MHz, 0.4V/µs

Over-The-Top Micropower

Rail-to-Rail Input and Output

Op Amps

FEATURES

DESCRIPTION

+

n

TheLT^®1638isalowpwerdualrail-to-railinputandoutput

operational ampliﬁer available in the standard 8-pin PDIP

andSOpackagesaswellasthe8-leadMSOPpackage. The

LT1639 is a low power quad rail-to-rail input and output

operational ampliﬁer offered in the standard 14-pin PDIP

andsurfacemountpackages.Forspacelimitedapplications

the LT1638 is available in a 3mm x 3mm x 0.8mm dual

ﬁne pitch leadless package (DFN).

Operates with Inputs Above V

n

Rail-to-Rail Input and Output

n

Low Power: 230μA per Ampliﬁer Max

Gain Bandwidth Product: 1.2MHz

Slew Rate: 0.4V/μs

High Output Current: 25mA Min

Speciﬁed on 3V, 5V and 15V Supplies

Reverse Battery Protection to 18V

No Supply Sequencing Problems

High Voltage Gain: 1500V/mV

Single Supply Input Range: –0.4V to 44V

High CMRR: 98dB

n

TheLT1638/LT1639opampsoperateonallsingleandsplit

supplies with a total voltage of 2.5V to 44V drawing only

170μA of quiescent current per ampliﬁer. These ampli-

ﬁers are reverse battery protected and draw no current

for reverse supply up to 18V.

No Phase Reversal

Available in 14-Lead SO, 8-Lead MSOP and DFN

Packages

The input range of the LT1638/LT1639 includes both sup-

plies, and a unique feature of this device is its capability

to operate over the top with either or both of its inputs

+

APPLICATIONS

above V . The inputs handle 44V, both differential and

common mode, independent of supply voltage. The input

stage incorporates phase reversal protection to prevent

false outputs from occurring when the inputs are below

the negative supply. Protective resistors are included in

the input leads so that current does not become excessive

when the inputs are forced below the negative supply.

The LT1638/LT1639 can drive loads up to 25mA and still

maintain rail-to-rail capability. The op amps are unity-gain

stable and drive all capacitive loads up to 1000pF when

optional output compensation is used.

n

Battery- or Solar-Powered Systems

Portable Instrumentation

Sensor Conditioning

n

Supply Current Sensing

n

Battery Monitoring

n

Micropower Active Filters

n

4mA to 20mA Transmitters

L, LT, LTC, LTM, Over-The-Top, Linear Technology and the Linear logo are registered

trademarks of Linear Technology Corporation. All other trademarks are the property of their

respective owners.

Output Voltage vs Input Voltage

TYPICAL APPLICATION

Over-The-Top^®Comparator with

100mV Hysteresis Centered at 0mV

5V

V

CC

10k

1M

V1

V

CC

V

1M

CC

+

A

B

V0

1/2 LT1638

1M

–

0V

10k

1M

1638/39 TA01

V2

1638/39 TA02

V

CC

= 5V, V

= 0V TO 44V, t = 27μs

20mV/DIV

CM

PD

16389fg

1

LT1638/LT1639

(Note 1)

ABSOLUTE MAXIMUM RATINGS

+

–

Total Supply Voltage (V to V ) ................................44V

Input Differential Voltage...........................................44V

Input Current........................................................ 25mA

Output Short-Circuit Duration (Note 2) .........Continuous

Operating Temperature Range (Note 3)

Speciﬁed Temperature Range (Note 4)

LT1638C/LT1639C................................–40°C to 85°C

LT1638I/LT1639I..................................–40°C to 85°C

LT1638H/LT1639H .............................–40°C to 125°C

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

DD Package ...................................................... 125°C

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

DD Package .......................................–65°C to 125°C

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

LT1638C/LT1639C................................–40°C to 85°C

LT1638I/LT1639I..................................–40°C to 85°C

LT1638H/LT1639H .............................–40°C to 125°C

PIN CONFIGURATION

TOP VIEW

+

TOP VIEW

1

2

3

4

8

7

6

5

OUT A

–IN A

+IN A

V

OUT A

–IN A

+IN A

1

2

3

4

8 V+

OUT B

–IN B

+IN B

7 OUT B

6 –IN B

5 +IN B

A

B

–

B

V

–

V

MS8 PACKAGE

8-LEAD PLASTIC MSOP

S8 PACKAGE

N8 PACKAGE

8-LEAD PDIP

8-LEAD PLASTIC SO

T

= 150°C, θ = 273°C/W

JMAX

JA

T

= 150°C, θ = 150°C/W (N8)

JA

= 150°C, θ = 190°C/W (S8)

JMAX

T

JMAX

JA

TOP VIEW

1

2

3

4

5

6

7

14

13

12

11

10

9

OUT A

–IN A

+IN A

OUT D

–IN D

+IN D

TOP VIEW

D

C

A

B

+

OUT A

–IN A

+IN A

1

2

3

4

8

V

7

OUT B

–IN B

+IN B

+

–

V

A

6

B

5

+IN B

–IN B

+IN C

–IN C

OUT C

–

V

8

OUT B

DD PACKAGE

8-LEAD (3mm s 3mm) PLASTIC DFN

S PACKAGE

14-LEAD PLASTIC SO

N PACKAGE

14-LEAD PDIP

T

= 125°C, θ = 43°C/W

JA

JMAX

–

UNDERSIDE METAL INTERNALLY CONNECTED TO V

T

= 150°C, θ = 130°C/W (N)

JA

= 150°C, θ = 160°C/W (S)

JA

JMAX

T

JMAX

16389fg

2

LT1638/LT1639

ORDER INFORMATION

LEAD FREE FINISH

LT1638CMS8#PBF

LT1638IMS8#PBF

LT1638CDD#PBF

LT1638IDD#PBF

LT1638CN8#PBF

LT1638IN8#PBF

LT1638CS8#PBF

LT1638IS8#PBF

LT1638HS8#PBF

LT1639CN#PBF

LT1639IN#PBF

TAPE AND REEL

PART MARKING*

LTCY

PACKAGE DESCRIPTION

8-Lead Plastic MSOP

8-Lead (3mm × 3mm) Plastic DFN

8-Lead PDIP

SPECIFIED TEMPERATURE RANGE

–40°C to 85°C

LT1638CMS8#TRPBF

LT1638IMS8#TRPBF

LT1638CDD#TRPBF

LT1638IDD#TRPBF

LT1638CN8#TRPBF

LT1638IN8#TRPBF

LT1638CS8#TRPBF

LT1638IS8#TRPBF

LT1638HS8#TRPBF

LT1639CN#TRPBF

LT1639IN#TRPBF

LT1639CS#TRPBF

LT1639IS#TRPBF

LT1639HS#TRPBF

LTCY

–40°C to 85°C

LAAL

–40°C to 85°C

LAAL

–40°C to 85°C

LT1638CN8

LT1638IN8

1638

–40°C to 85°C

8-Lead PDIP

–40°C to 85°C

8-Lead Plastic SO

–40°C to 85°C

1638I

8-Lead Plastic SO

–40°C to 85°C

1638H

8-Lead Plastic SO

–40°C to 125°C

–40°C to 85°C

LT1639CN

LT1639IN

LT1639CS

LT1639IS

LT1639HS

14-Lead PDIP

–40°C to 85°C

LT1639CS#PBF

LT1639IS#PBF

14-Lead Plastic SO

–40°C to 85°C

LT1639HS#PBF

–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/

16389fg

3

LT1638/LT1639

ELECTRICAL CHARACTERISTICS

The l denotes the speciﬁcations which apply over the speciﬁed temperature range, otherwise speciﬁcations are at T_A= 25°C.

V_S= 3V, 0V; V_S= 5V, 0V; V_CM= V_OUT= half supply, unless otherwise noted. (Note 4)

LT1638C/LT1639C, LT1638I/LT1639I

MIN

TYP

MAX

SYMBOL PARAMETER

CONDITIONS

UNITS

V

Input Offset Voltage

LT1638 N, S Packages

200

600

850

950

μV

OS

l

0°C ≤ T ≤ 70°C

A

–40°C ≤ T ≤ 85°C

A

LT1639 N, S Packages

300

350

400

700

950

μV

l

0°C ≤ T ≤ 70°C

A

–40°C ≤ T ≤ 85°C

1050

A

LT1638 MS8 Package

900

1150

1450

μV

l

0°C ≤ T ≤ 70°C

A

–40°C ≤ T ≤ 85°C

A

LT1638 DD Package

1100

1350

1450

μV

l

0°C ≤ T ≤ 70°C

A

–40°C ≤ T ≤ 85°C

A

l

Input Offset Voltage Drift

(Note 9)

LT1638/LT1639 N, S Packages

LT1638MS8, LT1638DD

2

6

7

μV/°C

2.5

l

I

Input Offset Current

1

6

nA

μA

OS

V

= 44V (Note 5)

2.5

CM

l

Input Bias Current

20

8

50

30

nA

μA

nA

B

V

= 44V (Note 5)

CM

S

V = 0V

0.1

Input Noise Voltage

0.1Hz to 10Hz

f = 1kHz

1

μV

P-P

e

n

Input Noise Voltage Density

Input Noise Current Density

Input Resistance

20

0.3

nV/√Hz

pA/√Hz

i

n

f = 1kHz

R

Differential

1

2.5

5.5

MΩ

IN

Common Mode, V = 0V to 44V

1.4

CM

C

Input Capacitance

5

pF

V

IN

l

Input Voltage Range

0

44

l

CMRR

Common Mode Rejection Ratio

V

CM

V

CM

= 0V to V – 1V

88

80

98

88

dB

CC

= 0V to 44V (Note 8)

A

Large-Signal Voltage Gain

V = 3V, V = 500mV to 2.5V, R = 10k

200

133

100

1500

V/mV

VOL

S

O

L

l

0°C ≤ T ≤ 70°C

A

–40°C ≤ T ≤ 85°C

A

V = 5V, V = 500mV to 4.5V, R = 10k

400

250

200

1500

V/mV

S

O

L

l

0°C ≤ T ≤ 70°C

A

–40°C ≤ T ≤ 85°C

A

l

V

Output Voltage Swing Low

Output Voltage Swing High

Short-Circuit Current (Note 2)

V = 3V, No Load

3

8

mV

OL

OH

S

V = 3V, I

= 5mA

250

450

S

SINK

l

V = 5V, No Load

3

8

mV

S

V = 5V, I

= 10mA

500

700

SINK

l

V = 3V, No Load

2.94

2.25

2.98

2.40

V

S

V = 3V, I

= 5mA

S

SOURCE

l

V = 5V, No Load

4.94

3.8

4.98

4.0

V

S

V = 5V, I

= 10mA

S

SOURCE

I

V = 3V, Short to GND

10

15

25

mA

SC

S

V = 3V, Short to V

S

CC

V = 5V, Short to GND

15

20

25

mA

S

V = 5V, Short to V

S

CC

16389fg

4

LT1638/LT1639

ELECTRICAL CHARACTERISTICS

The l denotes the speciﬁcations which apply over the speciﬁed temperature range, otherwise speciﬁcations are at T_A= 25°C.

V_S= 3V, 0V; V_S= 5V, 0V; V_CM= V_OUT= half supply, unless otherwise noted. (Note 4)

LT1638C/LT1639C, LT1638I/LT1639I

MIN

TYP

MAX

SYMBOL PARAMETER

PSRR Power Supply Rejection Ratio

CONDITIONS

V = 3V to 12.5V, V = V = 1V

UNITS

l

90

18

100

27

dB

V

S

CM

O

Reverse Supply Voltage

I = –100μA per Ampliﬁer

S

Minimum Operating Supply Voltage

2.4

170

2.7

V

I

Supply Current per Ampliﬁer

(Note 6)

230

275

μA

S

l

GBW

SR

Gain Bandwidth Product

(Note 5)

f = 5kHz

650

550

500

1075

0.38

kHz

l

0°C ≤ T ≤ 70°C

A

–40°C ≤ T ≤ 85°C

A

Slew Rate

(Note 7)

0.210

0.185

0.170

V/μs

A = –1, R = ∞

V

L

l

0°C ≤ T ≤ 70°C

A

–40°C ≤ T ≤ 85°C

A

The ^ldenotes the speciﬁcations which apply over the speciﬁed temperature range, otherwise speciﬁcations are at T_A= 25°C.

V_S= 15V, V_CM= 0V, V_OUT= 0V, unless otherwise noted. (Note 4)

LT1638C/LT1639C, LT1638I/LT1639I

MIN

TYP

MAX

SYMBOL PARAMETER

CONDITIONS

UNITS

V

Input Offset Voltage

LT1638 N, S Packages

250

800

1000

1100

μV

OS

l

0°C ≤ T ≤ 70°C

A

–40°C ≤ T ≤ 85°C

A

LT1639 N, S Packages

350

400

450

900

1100

1200

μV

l

0°C ≤ T ≤ 70°C

A

–40°C ≤ T ≤ 85°C

A

LT1638 MS8 Package

1050

1250

1550

μV

l

0°C ≤ T ≤ 70°C

A

–40°C ≤ T ≤ 85°C

A

LT1638 DDPackage

1250

1450

1550

μV

l

0°C ≤ T ≤ 70°C

A

–40°C ≤ T ≤ 85°C

A

l

Input Offset Voltage Drift

(Note 9)

LT1638/LT1639 N, S Packages

LT1638MS8, LT1638DD

2

6

7

μV/°C

2.5

l

I

Input Offset Current

Input Bias Current

1

20

1

6

nA

OS

50

B

Input Noise Voltage

0.1Hz to 10Hz

f = 1kHz

μV

P-P

e

Input Noise Voltage Density

Input Noise Current Density

Input Resistance

20

0.3

nV/√Hz

pA/√Hz

n

i

n

f = 1kHz

R

Differential

1

2.5

MΩ

IN

Common Mode, V = –15V to 14V

500

CM

C

Input Capacitance

4.5

pF

V

IN

l

Input Voltage Range

–15

80

29

CMRR

Common Mode Rejection Ratio

Large-Signal Voltage Gain

V

= –15V to 29V

88

dB

CM

A

V = 14V, R = 10k

200

125

100

500

V/mV

VOL

O

L

l

0°C ≤ T ≤ 70°C

A

–40°C ≤ T ≤ 85°C

A

l

V

Output Voltage Swing

No Load

OUT

14.9

13.7

14.95

14.0

V

O

I

= 10mA

16389fg

5

LT1638/LT1639

The l denotes the speciﬁcations which apply over the speciﬁed temperature

ELECTRICAL CHARACTERISTICS

range, otherwise speciﬁcations are at T_A= 25°C. V_S= 15V, V_CM= OV, V_OUT= OV, unless otherwise noted. (Note 4)

LT1638C/LT1639C, LT1638I/LT1639I

MIN

TYP

MAX

SYMBOL PARAMETER

CONDITIONS

UNITS

I

Short-Circuit Current (Note 2)

Short to GND

25

20

15

40

mA

SC

l

0°C ≤ T ≤ 70°C

A

–40°C ≤ T ≤ 85°C

A

l

PSRR

Power Supply Rejection Ratio

Supply Current per Ampliﬁer

V = 1.5V to 22V

S

90

100

205

dB

I

S

280

350

μA

GBW

SR

Gain Bandwidth Product

Slew Rate

f = 5kHz

750

650

600

1200

0.4

kHz

l

0°C ≤ T ≤ 70°C

A

–40°C ≤ T ≤ 85°C

A

A = –1, R = ∞, V = 10V

0.225

0.2

V/μs

V

L

O

l

0°C ≤ T ≤ 70°C

A

0.18

–40°C ≤ T ≤ 85°C

A

The l denotes the speciﬁcations which apply over the full operating temperature range of –40°C ≤ T_A≤ 125°C.

V_S= 3V, 0V; V_S= 5V, 0V; V_CM= V_OUT= Half Supply unless otherwise speciﬁed. (Note 4)

LT1638H/LT1639H

MIN

TYP

MAX

SYMBOL PARAMETER

CONDITIONS

UNITS

V

Input Offset Voltage

LT1638S8

200

650

3

μV

OS

l

mV

LT1639S

300

750

3.2

μV

l

mV

Input Offset Voltage Drift (Note 9)

Input Offset Current

15

μV/°C

l

I

15

10

nA

μA

OS

V

= 44V (Note 5)

CM

l

Input Bias Current

150

100

nA

μA

B

l

Input Voltage Range

0.3

44

V

l

CMRR

Common Mode Rejection Ratio

V

CM

V

CM

= 0.3V to V – 1V

76

72

dB

CC

= 0.3V to 44V

A

Large-Signal Voltage Gain

V = 3V, V = 500mV to 2.5V, R = 10k

200

20

1500

V/mV

VOL

S

O

L

l

V = 5V, V = 500mV to 4.5V, R = 10k

400

35

V/mV

S

O

L

l

V

Output Voltage Swing Low

Output Voltage Swing High

No Load

15

mV

OL

OH

I

= 5mA

900

SINK

V = 5V, I

= 10mA

1500

m

V

S

SINK

l

V = 3V, No Load

2.9

2

V

S

V = 3V, I

= 5mA

S

SOURCE

l

V = 5V, No Load

4.9

3.5

V

S

V = 5V, I

= 10mA

S

SOURCE

l

PSRR

Power Supply Rejection Ratio

Minimum Supply Voltage

Reverse Supply Voltage

V = 3V to 12.5V, V = V = 1V

80

2.7

18

dB

V

S

CM

O

I = –100μA

S

V

I

Supply Current

(Note 6)

170

1075

0.38

230

450

μA

S

l

GBW

SR

Gain Bandwidth Product

(Note 5)

f = 5kHz

650

350

kHz

Slew Rate

(Note 7)

A = –1, R = ∞

V

0.21

0.1

V/μs

L

16389fg

6

LT1638/LT1639

ELECTRICAL CHARACTERISTICS

The l denotes the speciﬁcations which apply over the full operating temperature range of –40°C ≤ TA ≤ 125°C, otherwise

speciﬁcations are at T_A= 25°C. V_S= 15V, V_CM= 0V, V_OUT= 0V, V_SHDN= V^–unless otherwise speciﬁed. (Note 4)

LT1638H/LT1639H

MIN

TYP

MAX

SYMBOL PARAMETER

CONDITIONS

UNITS

V

Input Offset Voltage

LT1638S8

250

850

3.4

μV

mV

OS

l

LT1639S

350

500

950

3.6

μV

l

mV

Input Offset Voltage Drift (Note 9)

Input Offset Current

15

25

μV/°C

nA

I

OS

Input Bias Current

250

nA

B

CMRR

Common Mode Rejection Ratio

Large-Signal Voltage Gain

V

CM

= –14.7V to 29V

72

dB

A

V = 14V, R = 10k

O

200

15

V/mV

VOL

L

l

V

Output Voltage Swing

No Load

14.8

14

13.4

V

O

I

=

5mA

10mA

OUT

l

PSRR

Power Supply Rejection Ratio

Minimum Supply Voltage

Supply Current

V = 1.5V to 22V

84

dB

V

S

1.35

I

S

205

1200

0.4

280

550

μA

l

GBW

SR

Gain Bandwidth Product

Slew Rate

f = 5kHz

750

400

kHz

A = –1, R = ∞, V = 10V,

0.225

0.1

V/μs

V

L

O

Measured at V = 5V

O

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.

tested or QA sampled at these temperatures. The LT1638I/LT1639I are

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

LT1638H/LT1639H are guaranteed to meet speciﬁed performance from

–40°C to 125°C.

Note 2: A heat sink may be required to keep the junction temperature

below absolute maximum. This depends on the power supply voltage

and how many ampliﬁers are shorted.

Note 5: V = 5V limits are guaranteed by correlation to V = 3V and

S S

V = 15V or V = 22V tests.

S

Note 6: V = 3V limits are guaranteed by correlation to V = 5V and

S

Note 3: The LT1638C/LT1639C and LT1638I/LT1639I are guaranteed

functional over the operating temperature range of –40°C to 85°C The

LT1638H/LT1639H are guaranteed functional over the operating

temperature range of –40°C to 125°C.

Note 4: The LT1638C/LT1639C are guaranteed to meet speciﬁed

performance from 0°C to 70°C and are designed, characterized and

expected to meet speciﬁed performance from –40°C to 85°C but not

V = 15V or V = 22V tests.

Note 7: Guaranteed by correlation to slew rate at V = 15V, and GBW at

S S

S

V = 3V and V = 15V tests.

S

Note 8: This speciﬁcation implies a typical input offset voltage of 2mV at

= 44V and a maximum input offset voltage of 5mV at V = 44V.

V

CM

Note 9: This parameter is not 100% tested.

16389fg

7

LT1638/LT1639

TYPICAL PERFORMANCE CHARACTERISTICS

Input Bias Current vs

Supply Current vs Supply Voltage

Minimum Supply Voltage

Common Mode Voltage

400

300

280

260

240

220

200

180

160

140

120

100

10000

8000

6000

V

= 5V, 0V

S

T

= 125°C

A

200

100

T

= 25°C

A

T

A

= –55°C

60

40

0

T

= 25°C

A

–100

T

= –55°C

20

A

T

A

= –55°C

T

A

= 125°C

T

A

= 125°C

–200

–300

T

= 25°C

0

A

–20

–40

–400

0

1

2

3

4

5

4.0

4.4

4.8

5.2

5.6

44

0

5

10 15 20 25 30 35 40 45

SUPPLY VOLTAGE (V)

TOTAL SUPPLY VOLTAGE (V)

COMMON MODE VOLTAGE (V)

1638/39 G02

1638/39 G03

1638/39 G01

Output Saturation Voltage vs

Load Current (Output High)

Output Saturation Voltage vs

Load Current (Output Low)

Output Saturation Voltage vs

Input Overdrive

1

100

V

=

2.5V

V

=

OD

2.5V

= 30mV

V

=

OD

2.5V

= 30mV

S

NO LOAD

T

= 125°C

A

OUTPUT HIGH

0.1

T

= 125°C

A

T

= 25°C

A

T

= 25°C

0.1

A

10

0.01

OUTPUT LOW

T

= –55°C

A

T

= –55°C

A

0.001

0.01

0.001

1

0.001

0.01

0.1

1

10

0.01

0.1

1

10

10 20

40 50 60 70 80 90 100

0

30

SINKING LOAD CURRENT (mA)

SOURCING LOAD CURRENT (mA)

INPUT OVERDRIVE (mV)

1638/39 G05

1638/39 G06

1638/39 G04

Noise Voltage Density vs

Frequency

Input Noise Current Density

vs Frequency

0.1Hz to 10Hz Noise Voltage

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0

70

60

50

40

30

20

10

0

V

= p2.5

S

1

10

100

1k

1

10

100

1k

0

1

2

3

4

5

6

7

8

9

10

FREQUENCY (Hz)

TIME (SEC)

FREQUENCY (Hz)

1638/39 G08

1638/39 G09

1638/39 G07

16389fg

8

LT1638/LT1639

TYPICAL PERFORMANCE CHARACTERISTICS

Gain and Phase Shift vs

Frequency

Gain Bandwidth Product vs

Temperature

Slew Rate vs Temperature

1500

1400

1300

1200

1100

1000

900

100

90

0.60

0.55

0.50

0.45

0.40

0.35

0.30

0.25

80

70

60

50

40

f = 1kHz

V

= 2.5V

S

RISING, V

=

15V

S

80

PHASE

70

V

=

15V

RISING, V

2.5V

S

60

50

30

20

GAIN

40

30

20

10

0

FALLING, V

=

2.5V

S

10

0

FALLING, V

=

15V

V

=

2.5V

50

S

–10

–20

800

1

10

100

1000

125

50

125

–50

0

25

75 100

–50

0

25

75 100

–25

TEMPERATURE (°C)

FREQUENCY (kHz)

1638/39 G12

1638/39 G13

1638/39 G14

Gain Bandwidth Product and

Phase Margin vs Load Resistance

Phase Margin vs Supply Voltage

PSRR vs Frequency

1500

1400

1300

1200

1100

1000

60

90

80

70

60

50

40

30

20

10

0

1500

1400

1300

1200

1100

1000

900

60

50

40

30

20

10

0

V

= 2.5V

V

A

=

2.5V

= –1

= R = 100k

S

V

F

R

G

50

40

30

20

10

f = 1kHz

PHASE MARGIN

POSITIVE SUPPLY

GAIN BANDWIDTH

NEGATIVE SUPPLY

GAIN BANDWIDTH

PRODUCT

800

–10

0

5

10 15 20 25 30 35 40 45

TOTAL SUPPLY VOLTAGE (V)

1

10

LOAD RESISTANCE (kΩ)

100

1

10

100

1000

FREQUENCY (kHz)

1638/39 G17

1638/39 G16

1638/39 G15

CMRR vs Frequency

Channel Separation vs Frequency

Output Impedance vs Frequency

120

110

100

90

10k

1k

130

120

110

100

90

V

= 15V

V

=

2.5V

S

V

S

= 15V

A

= 10

V

80

100

10

A

= 100

V

70

60

A

= 1

50

V

80

1

40

70

30

60

0.1

20

1

10

100

1

10

FREQUENCY (kHz)

100

1000

1

10

100

1000

FREQUENCY (kHz)

1638/39 G20

1638/39 G19

1638/39 G18

16389fg

9

LT1638/LT1639

TYPICAL PERFORMANCE CHARACTERISTICS

Settling Time to 0.1% vs

Output Step

Capacitive Load Handling,

Undistorted Output Swing

vs Frequency

Overshoot vs Capacitive Load

10

8

100

90

80

70

60

50

40

30

20

10

0

35

30

25

20

15

10

5

V

= 15V

DISTORTION ≤ 1%

= 20k

S

V

= 5V, 0V

= 2.5V

S

CM

V

=

15V

S

R

L

A

= 1

V

I

= 150μA

SOURCE

6

A

= –1

V

4

2

0

A

= 5

V

A

= 1

–2

–4

–6

–8

–10

V

A

= 10

A

= –1

25

V

=

2.5V

1

S

A

= 1

V

0

20

30

35

5

10

15

0.1

10

100

10

100

1000

10000

SETTLING TIME (μs)

CAPACITIVE LOAD (pF)

FREQUENCY (kHz)

1638/39 G22

1638/39 G23

1638/39 G21

Total Harmonic Distortion + Noise

vs Frequency

Total Harmonic Distortion + Noise

vs Load Resistance

Total Harmonic Distortion + Noise

vs Output Voltage

10

1

10

1

10

1

V

A

V

= 3V TOTAL

= 1

R

V

= 10k, f = 1kHz

= HALF SUPPLY

V

= 3V, 0V

= 2V

CM

= 20k

S

V

L

CM

S

OUT

P-P

= 2V AT 1kHz

A

= –1, V

=

1.5V

= 1.2V

IN

P-P

V

S

= –1, V = 3V, 0V

R

L

= 1, V

= 1.5V

S

= 1, V = 3V, 0V

S

V

=

IN

1.5V

1V

S

=

0.1

V

= 3V, 0V

IN

S

= 0.5V TO 2.5V

0.01

0.001

0.01

0.001

0.01

A

= –1

V

= 3V, 0V

A

= 1

S

V

= 0.2V TO 2.2V

IN

0.001

0

1

2

3

0.01

0.1

1

10

100

0.1

1

10

100

OUTPUT VOLTAGE (V

)

FREQUENCY (kHz)

P-P

LOAD RESISTANCE TO GROUND (kΩ)

1638/39 G26

1638/39 G24

1638/39 G25

Open-Loop Gain

Large-Signal Response

Small-Signal Response

V

S

=

15V

R = 2k

L

R = 10k

L

R = 50k

L

1638/39 G29

1638/39 G28

V

S

A

V

=

15V

V

S

A

V

C

L

=

15V

= 1

= 15pF

–20V

–10V

0V

10V

20V

OUTPUT VOLTAGE (5V/DIV)

1638/39 G27

16389fg

10

LT1638/LT1639

APPLICATIONS INFORMATION

Supply Voltage

The inputs are protected against excursions of 2V below

–

V by an internal 1k resistor in series with each input and

The positive supply pin of the LT1638/LT1639 should be

bypassed with a small capacitor (typically 0.1μF) within an

inchofthepin.Whendrivingheavyloadsanadditional4.7μF

electrolytic capacitor should be used. When using split

supplies, the same is true for the negative supply pin.

a diode from the input to the negative supply. If the inputs

–

can go more than 2V below V , an additional external

resistor is required. A 10k resistor will protect the input

–

against excursions as much as 10V below V . The input

stage of the LT1638/LT1639 incorporates phase reversal

protection to prevent the output from phase reversing for

The LT1638/LT1639 are protected against reverse battery

voltagesupto18V. Intheeventareversebatterycondition

occurs, the supply current is less than 1nA.

–

inputs below V . There are no clamping diodes between

the inputs and the maximum differential input voltage is

44V.

+

The LT1638/LT1639 can be shut down by removing V .

In this condition the input bias current is less than 0.1nA,

even if the inputs are 44V above the negative supply.

Output

The output of the LT1638/LT1639 can swing within 20mV

of the positive rail with no load, and within 3mV of the

negative rail with no load. When monitoring voltages

within 20mV of the positive rail or within 3mV of the

negative rail, gain should be taken to keep the output from

clipping. The LT1638/LT1639 are capable of sinking and

sourcing over 40mA on 15V supplies; sourcing current

capability is reduced to 20mA at 5V total supplies as noted

in the electrical characteristics.

When operating the LT1638/LT1639 on total supplies of

10V or more, the supply must not be brought up faster

than 1V/μs. Increasing the bypass capacitor and/or add-

ing a small resistor in series with the supply will limit the

rise time.

Inputs

The LT1638/LT1639 have two input stages, NPN and PNP

(see the Simpliﬁed Schematic), resulting in three distinct

operating regions as shown in the Input Bias Current vs

Common Mode typical performance curve.

The LT1638/LT1639 are internally compensated to drive

at least 200pF of capacitance under any output loading

conditions. A 0.22μF capacitor in series with a 150Ω

resistor between the output and ground will compensate

these ampliﬁers for larger capacitive loads, up to 1000pF,

at all output currents.

+

For input voltages about 0.8V or more below V , the PNP

input stage is active and the input bias current is typically

–20nA. When the input common mode voltage is within

0.5V of the positive rail, the NPN stage is operating and

the input bias current is typically 40nA. Increases in tem-

peraturewillcausethevoltageatwhichoperationswitches

from the PNP input stage to the NPN input stage to move

Optional Output Compensation for

Capacitive Loads Greater than 200pF

+

towards V . The input offset voltage of the NPN stage is

V

+

IN

untrimmed and is typically 600μV.

LT1638

1000pF

–

A Schottky diode in the collector of each NPN transistor

allow the LT1638/LT1639 to operate over the top, with

+

0.22μF

150Ω

either or both of its inputs above V . At about 0.3V above

+

V the NPN input transistor is fully saturated and the

input bias current is typically 8μA at room temperature.

The input offset voltage is typically 2mV when operating

Distortion

+

above V . The LT1638/LT1639 will operate with its inputs

–

+

There are two main contributors of distortion in op amps:

output crossover distortion as the output transitions from

sourcing to sinking current and distortion caused by

44V above V regardless of V .

16389fg

11

LT1638/LT1639

APPLICATIONS INFORMATION

nonlinear common mode rejection. If the op amp is

operating inverting there is no common mode induced

distortion. If the op amp is operating in the PNP input

current and with the input voltage swing between ground

+

and (V – 0.8V). See the Typical Performance Character-

istics curves.

+

stage (input is not within 0.8V of V ), the CMRR is very

Gain

good, typically 98dB. When the LT1638 switches between

input stages there is signiﬁcant nonlinearity in the CMRR.

Lower load resistance increases the output crossover

distortion, but has no effect on the input stage transition

distortion.ForlowestdistortiontheLT1638/LT1639should

beoperatedsinglesupply,withtheoutputalwayssourcing

The open-loop gain is almost independent of load when

the output is sourcing current. This optimizes perfor-

mance in single supply applications where the load is

returned to ground. The typical performance curve of

Open-Loop Gain for various loads shows the details.

V

CC

TYPICAL APPLICATIONS

R5

With1.2MHzbandwidth,Over-The-Topcapability,reverse-

batteryprotectionandrail-to-railinputandoutputfeatures,

theLT1638/LT1639areidealcandidatesforgeneralpurpose

applications.

100k

+

–

1/4 LT1639

LT1634-1.2V

D1

D2

R3

100k

The lowpass slope limiting ﬁlter in Figure 1 limits the

maximum dV/dT (not frequency) that it passes. When the

input signal differs from the output by one forward diode

drop, D1 or D2 will turn on. With a diode on, the voltage

–

R1

1k

V

OUT

1/4 LT1639

R2

across R2 will be constant and a ﬁxed current, V

/R2,

V

DIODE

+

IN

will ﬂow through capacitor C1, charging it linearly instead

of exponentially. The maximum slope that the circuit will

C1

R4

100k

LT1634-1.2V

pass is equal to V

divided by (R2)(C1). No matter

DIODE

D4

D3

how fast the input changes the output will never change

any faster than the dV/dT set by the diodes and (R2)(C).

–

+

1/4 LT1639

FOR R2 = 50k, C1 = 500pF,

MAXIMUM SLOPE = 0.048V/μs

D1

R6

100k

d

dt

1.2V

(R2)(C1)

V

OUT

=

D2

1638/39 F02

D1 TO D4 = IN4148

V

EE

R1

R2

V

IN

+

Response of Slope Limiting Filter

C1

V

d

V

D

1/2 LT1638

OUT

V

=

OUT(MAX)

dt

(R2)(C1)

–

FOR R1 = 10k, R2 = 100k, C1 = 1000pF

d

1638/39 F01

V

= 0.006V/μs

OUT(MAX)

dt

V

OUT

Figure 1. Lowpass Slope Limiting Filter

AmodiﬁcationofthisapplicationisshowninFigure2using

referencesinsteadofdiodestosetthemaximumslope. By

usingreferences,theslopeisindependentoftemperature.

V

IN

A scope photo shows a 1V , 2kHz input signal with a 2V

P-P

1638/39 TA02

pulse added to the sine wave; the circuit passes the 2kHz

signal but limits the slope of the pulse.

Figure 2. Lowpass Slope Limiting Filter with 0 TC

16389fg

12

LT1638/LT1639

TYPICAL APPLICATIONS

The application in Figure 3 utilizes the Over-The-Top

capabilities of the LT1638. The 0.2Ω resistor senses the

load current while the op amp and NPN transistor form a

closed loop making the collector current of Q1

proportional to the load current. As a convenient monitor,

the2kloadresistorconvertsthecurrentintoavoltage.The

The Figure 4 application uses the LT1638 in conjunction

with the LT1634 micropower shunt reference. The supply

current of the op amp also biases the reference. The drop

across resistor R1 is ﬁxed at 1.2V generating an output

current equal to 1.2V/R1.

+

positive supply rail, V , is not limited to the 5V supply of

the op amp and could be as high as 44V.

+

V

200Ω

V

CC

LT1634-1.2

R1

5V

0.2Ω

+

Q1

1/2 LT1638

+

2N3904

200Ω

I

–

1.2V

R1

0V TO 4.3V

1/2 LT1638

I

=

OUT

2k

LOAD

–

I

OUT

1638/39 F03

V

= (2Ω)(I )

LOAD

OUT

1638/39 F04

Figure 3. Positive Supply Rail Current Sense

Figure 4. Current Source

SIMPLIFIED SCHEMATIC

+

V

Q2

Q1

Q3

Q22

D1

D2

D3

R1

6k

R2

1k

Q19

Q4

–IN

+IN

Q17

Q18

Q20

OUT

Q7

Q8

Q11 Q12

R3

1k

+

Q16

10μA

Q15

Q9

Q10

Q13

Q14

Q21

R4

8k

R5

8k

Q5

Q6

D4

D5

–

V

ONE AMPLIFIER

1638/39 SS

16389fg

13

LT1638/LT1639

PACKAGE DESCRIPTION

Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.

DD Package

8-Lead Plastic DFN (3mm × 3mm)

(Reference LTC DWG # 05-08-1698 Rev C)

R = 0.125

0.40 p 0.10

TYP

5

8

0.70 p0.05

3.5 p0.05

2.10 p0.05 (2 SIDES)

1.65 p0.05

3.00 p0.10

(4 SIDES)

1.65 p 0.10

(2 SIDES)

PIN 1

TOP MARK

(NOTE 6)

PACKAGE

OUTLINE

(DD8) DFN 0509 REV C

4

1

0.25 p 0.05

0.75 p0.05

0.200 REF

0.25 p 0.05

0.50 BSC

0.50

BSC

2.38 p0.10

2.38 p0.05

BOTTOM VIEW—EXPOSED PAD

0.00 – 0.05

RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS

APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED

NOTE:

1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-1)

2. DRAWING NOT TO SCALE

3. ALL DIMENSIONS ARE IN MILLIMETERS

4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE

MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE

5. EXPOSED PAD SHALL BE SOLDER PLATED

6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION

ON TOP AND BOTTOM OF PACKAGE

MS8 Package

8-Lead Plastic MSOP

(Reference LTC DWG # 05-08-1660 Rev F)

3.00 p 0.102

(.118 p .004)

(NOTE 3)

0.52

(.0205)

REF

8

7 6 5

3.00 p 0.102

(.118 p .004)

(NOTE 4)

4.90 p 0.152

(.193 p .006)

DETAIL “A”

0o – 6o TYP

0.889 p 0.127

(.035 p .005)

0.254

(.010)

GAUGE PLANE

5.23

(.206)

MIN

1

2

4

3

3.20 – 3.45

(.126 – .136)

0.53 p 0.152

(.021 p .006)

1.10

(.043)

MAX

0.86

(.034)

REF

DETAIL “A”

0.18

(.007)

0.65

(.0256)

BSC

0.42 p 0.038

(.0165 p .0015)

SEATING

PLANE

TYP

0.22 – 0.38

0.1016 p 0.0508

RECOMMENDED SOLDER PAD LAYOUT

NOTE:

1. DIMENSIONS IN MILLIMETER/(INCH)

2. DRAWING NOT TO SCALE

(.009 – .015)

(.004 p .002)

0.65

(.0256)

BSC

TYP

MSOP (MS8) 0307 REV F

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

16389fg

14

LT1638/LT1639

PACKAGE DESCRIPTION

Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.

N8 Package

8-Lead PDIP (Narrow .300 Inch)

(Reference LTC DWG # 05-08-1510)

.400*

(10.160)

MAX

8

1

7

6

5

4

.130 .005

(3.302 0.127)

.300 – .325

(7.620 – 8.255)

.045 – .065

(1.143 – 1.651)

.255 .015*

(6.477 0.381)

.065

(1.651)

TYP

2

3

.008 – .015

(0.203 – 0.381)

N8 1002

.120

.020

(0.508)

MIN

(3.048)

MIN

+.035

–.015

.325

.018 .003

(0.457 0.076)

.100

(2.54)

BSC

+0.889

8.255

(

)

–0.381

NOTE:

INCHES

1. DIMENSIONS ARE

MILLIMETERS

*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.

MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm)

S8 Package

8-Lead Plastic Small Outline (Narrow .150 Inch)

(Reference LTC DWG # 05-08-1610)

.189 – .197

(4.801 – 5.004)

.045 p.005

NOTE 3

.050 BSC

7

5

8

6

.245

MIN

.160 p.005

.150 – .157

(3.810 – 3.988)

NOTE 3

.228 – .244

(5.791 – 6.197)

.030 p.005

TYP

1

3

4

2

RECOMMENDED SOLDER PAD LAYOUT

.010 – .020

(0.254 – 0.508)

s 45o

.053 – .069

(1.346 – 1.752)

.004 – .010

(0.101 – 0.254)

.008 – .010

(0.203 – 0.254)

0o– 8o TYP

.016 – .050

(0.406 – 1.270)

.050

(1.270)

BSC

.014 – .019

(0.355 – 0.483)

TYP

NOTE:

INCHES

1. DIMENSIONS IN

(MILLIMETERS)

2. DRAWING NOT TO SCALE

3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.

MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)

SO8 0303

16389fg

15

LT1638/LT1639

PACKAGE DESCRIPTION

Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.

N Package

14-Lead PDIP (Narrow .300 Inch)

(Reference LTC DWG # 05-08-1510)

.770*

(19.558)

MAX

14

13

12

11

10

9

8

7

.255 .015*

(6.477 0.381)

1

2

3

5

6

4

.300 – .325

(7.620 – 8.255)

.045 – .065

(1.143 – 1.651)

.130 .005

(3.302 0.127)

.020

(0.508)

MIN

.065

(1.651)

TYP

.008 – .015

(0.203 – 0.381)

+.035

.325

.005

(0.127)

MIN

–.015

.120

(3.048)

MIN

.018 .003

.100

(2.54)

BSC

+0.889

8.255

(0.457 0.076)

(

)

–0.381

N14 1103

NOTE:

INCHES

MILLIMETERS

1. DIMENSIONS ARE

*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.

MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm)

S Package

14-Lead Plastic Small Outline (Narrow .150 Inch)

(Reference LTC DWG # 05-08-1610)

.337 – .344

(8.560 – 8.738)

NOTE 3

.045 .005

.050 BSC

13

12

11

10

8

14

N

9

N

1

.245

MIN

.160 .005

.150 – .157

(3.810 – 3.988)

NOTE 3

.228 – .244

(5.791 – 6.197)

2

3

N/2

7

.030 .005

TYP

RECOMMENDED SOLDER PAD LAYOUT

1

2

3

4

5

6

.010 – .020

(0.254 – 0.508)

s 45°

.053 – .069

(1.346 – 1.752)

NOTE:

1. DIMENSIONS IN

INCHES

(MILLIMETERS)

.004 – .010

(0.101 – 0.254)

.008 – .010

(0.203 – 0.254)

0° – 8° TYP

2. DRAWING NOT TO SCALE

3. THESE DIMENSIONS DO NOT INCLUDE

MOLD FLASH OR PROTRUSIONS.

MOLD FLASH OR PROTRUSIONS

SHALL NOT EXCEED .006" (0.15mm)

.050

(1.270)

BSC

.014 – .019

(0.355 – 0.483)

TYP

.016 – .050

(0.406 – 1.270)

S14 0502

16389fg

16

LT1638/LT1639

REVISION HISTORY ^{(Revision history begins at Rev E)}

REV

DATE

DESCRIPTION

PAGE NUMBER

E

06/10 Updates to Supply Voltage section

11

10

F

09/10 Units on x-axis of G24 changed from Hz to kHz

G

10/11

2

3

7

Updated θ values for MS8 and DD packages in Pin Conﬁguration

Corrected part numbers and revised column title to Speciﬁed Temperature Range in Order Information

Deleted Note 10 from Electrical Characteristics

JA

16389fg

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.

17

LT1638/LT1639

TYPICAL APPLICATION

The battery monitor in Figure 5 also demonstrates the

LT1638’s ability to operate with its inputs above the

positive rail. In this application, a conventional ampliﬁer

would be limited to a battery voltage between 5V and

ground, but the LT1638 can handle battery voltages as

high as 44V. When the battery is charging, Amp B senses

the voltage drop across R_S. The output of Amp B causes

Q2 to drain sufﬁcient current through R_Bto balance the

input of Amp B. Likewise, Amp A and Q1 form a closed

loopwhenthebatteryisdischarging. Thecurrentthrough

Q1 or Q2 is proportional to the current in R_Sand this cur-

rent ﬂows into R_Gand is converted into a voltage. Amp

D buffers and ampliﬁes the voltage across R_G. Amp C

compares the output of Amp A and Amp B to determine

the polarity of current through R_S. The scale factor for

V_OUTwith S1 open is 1V/A. With S1 closed the scale

factor is 1V/100mA and currents as low as 500μA can

be measured.

R , 0.2Ω

S

R , 2k

A

Q1

2N3904

CHARGER

VOLTAGE

+

A

+

1/4 LT1639

R

A

2k

',

I

BATT

C

LOGIC

–

1/4 LT1639

–

R , 2k

B

Q2

2N3904

LOGIC HIGH (5V) = CHARGING

+

LOGIC LOW (0V) = DISCHARGING

B

1/4 LT1639

R

, 2k

'

B

+

–

+

LOAD

D

R

G

V

OUT

1/4 LT1639

V

= 12V

10k

BATT

–

S1

10k

90.9k

1638/39 F05

V

OUT

S1 = OPEN, GAIN = 1

S1 = CLOSED, GAIN = 10

R

V

= R

A

S

B

I

=

AMPS

BATT

= 5V, 0V

(R )(R /R )(GAIN) GAIN

S

G

A

Figure 5. Battery Monitor

RELATED PARTS

PART NUMBER

DESCRIPTION

COMMENTS

Input/Output Common Mode Includes Ground, 70μV V

LT1078/LT1079

LT2078/LT2079

Dual/Quad 55μA Max, Single Supply, Precision Op Amps

Dual/Quad 17μA Max, Single Supply, Precison Op Amps

Dual/Quad Precision, Rail-to-Rail Input and Output Op Amps

OS(MAX)

and 2.5μV/°C Drift (Max), 200kHz GBW, 0.07V/μs Slew Rate

LT1178/LT1179

LT2178/LT2179

Input/Output Common Mode Includes Ground, 70μV V

OS(MAX)

and 4μV/°C Drift (Max), 85kHz GBW, 0.04V/μs Slew Rate

LT1366/LT1367

LT1490/LT1491

475μV V , 500V/mV A , 400kHz GBW

OS(MAX)

VOL(MIN)

Dual/Quad Over-The-Top Micropower, Rail-to-Rail Input and

Output Op Amps

Single Supply Input Range: –0.4V to 44V, Micropower 50μA

per Ampliﬁer, Rail-to-Rail Input and Output, 200kHz GBW

LT1636

Single Over-The-Top Micropower Rail-to-Rail Input and Output

Op Amp

55μA Supply Current, V

Extends 44V above V ,

CM EE

Independent of V ; MSOP Package, Shutdown Function

CC

16389fg

LT 1011 REV G • PRINTED IN USA

LinearTechnology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

18

●

(408) 432-1900 FAX: (408) 434-0507 www.linear.com


型号：	LT1638CDD#TRPBF
厂家：	Linear
描述：	LT1638 - 1.2MHz, 0.4V/µs Over-The-Top Micropower Rail-to-Rail Input and Output Op Amps; Package: DFN; Pins: 8; Temperature Range: 0°C to 70°C 放大器光电二极管
文件：	总18页 (文件大小：271K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

LT1638CDD#TRPBF [Linear]

相关型号：

LT1638CMS8

LT1638CMS8#PBF

LT1638CMS8#TR

LT1638CMS8#TRPBF

LT1638CN8

LT1638CN8#PBF

LT1638CS#TRPBF

LT1638CS8

LT1638CS8#PBF

LT1638CS8#TR

LT1638CS8#TRPBF

LT1638HS8