LTC2050CS5-TR_技术文档

LTC2050/LTC2050HV

Zero-Drift

Operational Ampliﬁers

in SOT-23

FEATURES

DESCRIPTION

The LTC^®2050 and LTC2050HV are zero-drift operational

ampliﬁers available in the 5- or 6-lead SOT-23 and SO-8

packages. The LTC2050 operates from a single 2.7V to

6V supply. The LTC2050HV operates on supplies from

2.7V to 5.5V. The current consumption is 800μA and the

versions in the 6-lead SOT-23 and SO-8 packages offer

power shutdown (active low).

n

Maximum Offset Voltage of 3μV

n

Maximum Offset Voltage Drift of 30nV/°C

n

Noise: 1.5μV (0.01Hz to 10Hz Typ)

P-P

n

Voltage Gain: 140dB (Typ)

PSRR: 130dB (Typ)

CMRR: 130dB (Typ)

n

Supply Current: 0.8mA (Typ)

Supply Operation: 2.7V to 6V (LTC2050)

n

The LTC2050, despite its miniature size, features uncom-

promisingDCperformance.Thetypicalinputoffsetvoltage

and offset drift are 0.5μV and 10nV/°C. The almost zero

DC offset and drift are supported with a power supply

rejection ratio (PSRR) and common mode rejection ratio

(CMRR) of more than 130dB.

2.7V to 5.5V (LTC2050HV)

n

Extended Common Mode Input Range

n

Output Swings Rail-to-Rail

n

Input Overload Recovery Time: 2ms (Typ)

n

Operating Temperature Range: –40°C to 125°C

n

SOT-23 Package

The input common mode voltage ranges from the nega-

tive supply up to typically 1V from the positive supply.

The LTC2050 also has an enhanced output stage capable

of driving loads as low as 2kΩ to both supply rails. The

open-loop gain is typically 140dB. The LTC2050 also

APPLICATIONS

n

Thermocouple Ampliﬁers

n

Electronic Scales

n

Medical Instrumentation

Strain Gauge Ampliﬁers

High Resolution Data Acquisition

DC Accurate RC Active Filters

features a 1.5μV DC to 10Hz noise and a 3MHz gain

P-P

n

bandwidth product.

L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.

n

Low Side Current Sense

TYPICAL APPLICATION

Differential Bridge Ampliﬁer

Input Referred Noise 0.1Hz to 10Hz

2

5V

50Ω

GAIN

TRIM

0.1μF

18.2k

0.1μF

1

0

350Ω

STRAIN

GAUGE

5

4

–

1

A

V

= 100

LTC2050HV

–1

–2

3

+

2

0.1μF

18.2k

0

2

4

8

6

10

2050 TA01

TIME (SEC)

–5V

2050fb

1

LTC2050/LTC2050HV

ABSOLUTE MAXIMUM RATINGS

(Note 1)

+

–

Total Supply Voltage (V to V )

Operating Temperature Range................ –40°C to 125°C

Speciﬁed Temperature Range

(Note 3) ............................................. –40°C to 125°C

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

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

LTC2050..................................................................7V

LTC2050HV...........................................................12V

Input Voltage ......................... (V + 0.3V) to (V – 0.3V)

Output Short-Circuit Duration ......................... Indeﬁnite

+

–

PIN CONFIGURATION

TOP VIEW

SHDN

–IN

1

2

3

4

8

7

6

5

NC

+

OUT 1

–

5 V

OUT 1

–

6 V

+

V

2

V

2

5 SHDN

+IN

OUT

NC

+IN 3

4 –IN

+IN 3

4 –IN

–

V

S5 PACKAGE

S6 PACKAGE

6-LEAD PLASTIC TSOT-23

T = 125°C, θ = 230°C/W

JMAX

5-LEAD PLASTIC TSOT-23

S8 PACKAGE

8-LEAD PLASTIC SO

= 125°C, θ = 190°C/W

T

= 125°C, θ = 250°C/W

JMAX

JA

T

JMAX

JA

ORDER INFORMATION

LEAD FREE FINISH

LTC2050CS5#PBF

LTC2050IS5#PBF

TAPE AND REEL

PART MARKING*

LTAEG

LTAEH

LTAEJ

PACKAGE DESCRIPTION

5-Lead Plastic TSOT-23

6-Lead Plastic TSOT-23

8-Lead Plastic SO

SPECIFIED TEMPERATURE RANGE

0°C to 70°C

LTC2050CS5#TRPBF

LTC2050IS5#TRPBF

LTC2050HS5#TRPBF

LTC2050HVCS5#TRPBF

LTC2050HVIS5#TRPBF

LTC2050HVHS5#TRPBF

LTC2050CS6#TRPBF

LTC2050IS6#TRPBF

LTC2050HS6#TRPBF

LTC2050HVCS6#TRPBF

LTC2050HVIS6#TRPBF

LTC2050HVHS6#TRPBF

LTC2050CS8#TRPBF

LTC2050IS8#TRPBF

LTC2050HVCS8#TRPBF

LTC2050HVIS8#TRPBF

–40°C to 85°C

–40°C to 125°C

0°C to 70°C

LTC2050HS5#PBF

LTC2050HVCS5#PBF

LTC2050HVIS5#PBF

LTC2050HVHS5#PBF

LTC2050CS6#PBF

LTC2050IS6#PBF

–40°C to 85°C

–40°C to 125°C

0°C to 70°C

LTAEJ

–40°C to 85°C

–40°C to 125°C

0°C to 70°C

LTC2050HS6#PBF

LTC2050HVCS6#PBF

LTC2050HVIS6#PBF

LTC2050HVHS6#PBF

LTC2050CS8#PBF

LTC2050IS8#PBF

LTAEJ

LTAEK

–40°C to 85°C

–40°C to 125°C

0°C to 70°C

LTAEK

2050

2050I

8-Lead Plastic SO

–40°C to 85°C

0°C to 70°C

LTC2050HVCS8#PBF

LTC2050HVIS8#PBF

2050HV

050HVI

8-Lead Plastic SO

–40°C to 85°C

2050fb

2

LTC2050/LTC2050HV

ORDER INFORMATION

LEAD BASED FINISH

TAPE AND REEL

PART MARKING*

LTAEG

LTAEH

LTAEJ

PACKAGE DESCRIPTION

SPECIFIED TEMPERATURE RANGE

0°C to 70°C

LTC2050CS5

LTC2050CS5#TR

LTC2050IS5#TR

5-Lead Plastic TSOT-23

6-Lead Plastic TSOT-23

8-Lead Plastic SO

LTC2050IS5

–40°C to 85°C

–40°C to 125°C

0°C to 70°C

LTC2050HS5

LTC2050HS5#TR

LTC2050HVCS5#TR

LTC2050HVIS5#TR

LTC2050HVHS5#TR

LTC2050CS6#TR

LTC2050IS6#TR

LTC2050HVCS5

LTC2050HVIS5

LTC2050HVHS5

LTC2050CS6

–40°C to 85°C

–40°C to 125°C

0°C to 70°C

LTC2050IS6

LTAEJ

–40°C to 85°C

–40°C to 125°C

0°C to 70°C

LTC2050HS6

LTC2050HS6#TR

LTC2050HVCS6#TR

LTC2050HVIS6#TR

LTC2050HVHS6#TR

LTC2050CS8#TR

LTC2050IS8#TR

LTAEJ

LTC2050HVCS6

LTC2050HVIS6

LTC2050HVHS6

LTC2050CS8

LTAEK

–40°C to 85°C

–40°C to 125°C

0°C to 70°C

LTAEK

2050

LTC2050IS8

2050I

8-Lead Plastic SO

–40°C to 85°C

0°C to 70°C

LTC2050HVCS8

LTC2050HVIS8

LTC2050HVCS8#TR

LTC2050HVIS8#TR

2050HV

050HVI

8-Lead Plastic SO

–40°C to 85°C

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

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/

2050fb

3

LTC2050/LTC2050HV

ELECTRICAL CHARACTERISTICS ^{(LTC2050, LTC2050HV) The}l denotes the speciﬁcations which apply over

the full operating temperature range, otherwise speciﬁcations are at T_A= 25°C. V_S= 3V unless otherwise noted. (Note 3)

C, I SUFFIXES

H SUFFIX

TYP

PARAMETER

CONDITIONS

(Note 2)

MIN

TYP

MAX

3

MIN

MAX

3

UNITS

μV

Input Offset Voltage

Average Input Offset Drift

Long-Term Offset Drift

Input Bias Current

0.5

l

(Note 2)

0.03

0.05

μV/°C

nV/√mo

50

20

50

20

LTC2050

75

300

75

4000

pA

l

LTC2050HV

LTC2050

1

50

100

1

50

4000

pA

Input Offset Current

150

200

150

1000

pA

LTC2050HV

100

150

100

1000

pA

Input Noise Voltage

R = 100Ω, 0.01Hz to 10Hz

S

1.5

1.7

1.5

1.7

μV

P-P

Input Capacitance

pF

+

Common Mode Rejection Ratio

V

= GND to (V – 1.3)

115

110

130

115

110

130

dB

CM

l

= GND to (V – 1.3)

Power Supply Rejection Ratio

Large-Signal Voltage Gain

Output Voltage Swing High

Output Voltage Swing Low

V = 2.7V to 6V

S

120

115

130

120

115

130

dB

R = 10k

120

115

140

120

115

140

dB

L

l

R = 2k to GND

R = 10k to GND

2.85

2.95

2.94

2.98

2.85

2.95

2.94

2.98

V

L

l

R = 2k to GND

R = 10k to GND

1

10

1

10

mV

L

Slew Rate

2

3

2

3

V/μs

MHz

Gain Bandwidth Product

Supply Current

l

V

= V , No Load

0.75

1.1

10

0.75

1.2

10

mA

μA

SHDN

IH

= V

IL

–

l

Shutdown Pin Input Low Voltage (V )

V + 0.5

V

IL

+

Shutdown Pin Input High Voltage (V )

V – 0.5

IH

Shutdown Pin Input Current

Internal Sampling Frequency

V

SHDN

= GND

–0.5

7.5

–3

–0.5

7.5

–3

μA

kHz

2050fb

4

LTC2050/LTC2050HV

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

temperature range, otherwise speciﬁcations are at T_A= 25°C. (LTC2050, LTC2050HV) V_S= 5V unless otherwise noted. (Note 3)

C, I SUFFIXES

H SUFFIX

TYP

PARAMETER

CONDITIONS

(Note 2)

MIN

TYP

MAX

3

MIN

MAX

3

UNITS

μV

Input Offset Voltage

Average Input Offset Drift

Long-Term Offset Drift

Input Bias Current

0.5

l

(Note 2)

0.03

0.05

μV/°C

nV/√mo

50

75

50

75

LTC2050

150

300

150

4000

pA

l

LTC2050HV

LTC2050

7

50

150

7

50

4000

pA

Input Offset Current

300

400

300

1000

pA

LTC2050HV

100

200

100

1000

pA

Input Noise Voltage

R = 100Ω, 0.01Hz to 10Hz

S

1.5

μV

P-P

+

Common Mode Rejection Ratio

V

= GND to (V – 1.3)

120

115

130

120

110

130

dB

CM

l

= GND to (V – 1.3)

Power Supply Rejection Ratio

Large-Signal Voltage Gain

Output Voltage Swing High

Output Voltage Swing Low

V = 2.7V to 6V

S

120

115

130

120

115

130

dB

R = 10k

125

120

140

125

115

140

dB

L

l

R = 2k to GND

R = 10k to GND

4.85

4.95

4.94

4.98

4.85

4.95

4.94

4.98

V

L

l

R = 2k to GND

R = 10k to GND

1

10

1

10

mV

L

Slew Rate

2

3

2

3

V/μs

MHz

Gain Bandwidth Product

Supply Current

l

V

= V , No Load

0.8

1.2

15

0.8

1.3

15

mA

μA

SHDN

IH

= V

IL

–

l

Shutdown Pin Input Low Voltage (V )

V + 0.5

V

IL

+

Shutdown Pin Input High Voltage (V )

V – 0.5

IH

Shutdown Pin Input Current

Internal Sampling Frequency

V

SHDN

= GND

–0.5

7.5

–7

–0.5

7.5

–7

μA

kHz

2050fb

5

LTC2050/LTC2050HV

ELECTRICAL CHARACTERISTICS ^{(LTC2050HV) The}l denotes the speciﬁcations which apply over the full

operating temperature range, otherwise speciﬁcations are at T_A= 25°C. V_S= 5V unless otherwise noted. (Note 3)

C, I SUFFIXES

H SUFFIX

TYP

PARAMETER

CONDITIONS

(Note 2)

MIN

TYP

MAX

3

MIN

MAX

3

UNITS

μV

Input Offset Voltage

Average Input Offset Drift

Long-Term Offset Drift

Input Bias Current (Note 4)

0.5

l

(Note 2)

0.03

0.05

μV/°C

nV/√mo

50

25

50

25

125

300

125

4000

pA

l

Input Offset Current (Note 4)

250

500

250

1000

pA

Input Noise Voltage

R = 100Ω, 0.01Hz to 10Hz

S

1.5

μV

P-P

–

+

Common Mode Rejection Ratio

V

= V to (V – 1.3)

120

115

130

120

115

130

dB

CM

l

= V to (V – 1.3)

Power Supply Rejection Ratio

Large-Signal Voltage Gain

V = 2.7V to 11V

120

115

130

120

115

130

dB

S

R = 10k

125

120

140

125

120

140

dB

L

l

Maximum Output Voltage Swing

R = 2k to GND

L

4.75

4.90

4.94

4.98

4.50

4.85

4.94

4.98

V

L

R = 10k to GND

Slew Rate

2

3

1

2

3

1

V/μs

MHz

Gain Bandwidth Product

Supply Current

l

V

= V , No Load

1.5

25

1.6

25

mA

μA

SHDN

IH

= V

IL

–

l

Shutdown Pin Input Low Voltage (V )

V + 0.5

V

IL

+

Shutdown Pin Input High Voltage (V )

V – 0.5

IH

–

Shutdown Pin Input Current

Internal Sampling Frequency

V

SHDN

= V

–3

–20

–3

–20

μA

kHz

7.5

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.

The LTC2050C/LTC2050HVC are guaranteed to meet the temperature limits

of 0°C and 70°C. The LTC2050I/LTC2050HVI are guaranteed to meet the

temperature limits of –40°C and 85°C. The LTC2050H/LTC2050HVH are

guaranteed to meet the temperature limits of –40°C and 125°C.

Note 2: These parameters are guaranteed by design. Thermocouple effects

Note 4: The bias current measurement accuracy depends on the proximity

of the supply bypass capacitor to the device under test, especially at 5V

supplies. Because of testing limitations on the placement of this bypass

capacitor, the bias current at 5V supplies is guaranteed by design to meet

the data sheet limits, but tested to relaxed limits.

preclude measurements of these voltage levels during automated testing.

Note 3: All versions of the LTC2050 are designed, characterized and

expected to meet the extended temperature limits of –40°C and 125°C.

2050fb

6

LTC2050/LTC2050HV

TYPICAL PERFORMANCE CHARACTERISTICS

Common Mode Rejection Ratio

vs Frequency

DC CMRR vs Common Mode Input

Voltage

PSRR vs Frequency

140

120

140

120

V

= 3V OR 5V

S

= 0.5V

CM

P-P

100

–PSRR

100

80

60

40

20

0

100

80

60

40

20

0

80

+PSRR

V

= 5V

S

V

= 3V

60

40

20

0

S

T

= 25°C

A

1

10

100

1k

10k

100k

0

1

2

3

4

5

10

100

1k

10k

100k

1M

FREQUENCY (Hz)

V

CM

(V)

FREQUENCY (Hz)

2050 G01

2050 G02

2050 G14

Output Voltage Swing vs Load

Resistance

Output Swing vs Load Resistance

5V Supply

Output Swing vs Output Current

5

4

6

5

4

3

2

1

0

6

R

L

TO GND

R

TO GND

L

5

4

3

V

= 5V

= 3V

V

= 5V

= 3V

S

2

1

0

V

S

–1

–2

–3

–4

–5

2

1

0

2

4

6

8

10

0.01

0.1

OUTPUT CURRENT (mA)

1

10

0

2

4

6

8

LOAD RESISTANCE (kΩ)

2050 G16

2050 G04

2050 G03

Output Swing vs Output Current

5V Supply

Gain/Phase vs Frequency

Bias Current vs Temperature

5

4

80

10k

1k

100

80

R

L

TO GND

100

120

140

160

180

200

3

PHASE

60

2

1

40

V

S

= 5V

GAIN

0

100

10

1

20

–1

–2

–3

–4

–5

V

S

= 3V

0

V

C

= 3V OR 5V

= 35pF

= 10kΩ

S

L

–20

–40

R

0.01

0.1

1.0

10

–50

50

75 100 125

100

1k

10k

100k

1M

10M

–25

0

25

OUTPUT CURRENT (mA)

TEMPERATURE (°C)

FREQUENCY (Hz)

2050 G05

2050 G17

2050 G06

2050fb

7

LTC2050/LTC2050HV

TYPICAL PERFORMANCE CHARACTERISTICS

Input Bias Current vs Input

Common Mode Voltage

(LTC2050HV)

Input Bias Current vs Input

Common Mode Voltage

Transient Response

60

50

40

30

20

10

0

160

140

120

100

80

V

S

= 5V

V

S

=

5V

0.5/DIV

60

V

S

= 3V

V

= 5V

S

40

2050 G07

V

S

= 3V

A

V

= 1

1μs/DIV

20

R

= 100k

= 50pF

= 5V

L

S

C

V

–10

0

1

2

4

0

5

–5

–1

1

3

5

3

–3

INPUT COMMON MODE VOLTAGE (V)

2050 G15

2050 G13

Sampling Frequency

vs Supply Voltage

Sampling Frequency

vs Temperature

Input Overload Recovery

10

9

10

T

= 25°C

A

1.5

9

8

7

6

5

OUTPUT (V)

INPUT (V)

0

8

V

= 5V

S

7

–0.2

6

2050 G08

A

V

= –100

= 100k

= 10pF

500μs/DIV

R

L

S

C

V

5

=

1.5V

5.0

2.5 3.0 3.5 4.0 4.5

SUPPLY VOLTAGE (V)

5.5

50

TEMPERATURE (°C)

125

6.0

–50

0

25

75 100

–25

2050 G09

2050 G10

Supply Current vs Supply Voltage

Supply Current vs Temperature

1.0

0.8

0.6

0.4

0.2

0

1.2

T

= 25°C

A

V

S

= 5V

1.0

0.8

0.6

0.4

0.2

0

V

S

= 3V

–50

0

25

50

75 100 125

–25

2

4

6

8

10

SUPPLY VOLTAGE (V)

TEMPERATURE (°C)

2050 G12

2050 G11

2050fb

8

LTC2050/LTC2050HV

TEST CIRCUITS

Electrical Characteristics Test Circuit

100k

OUTPUT

+

V

10Ω

4

5

–

1

LTC2050

3

+

2

R

L

–

V

2050 TC01

DC-10Hz Noise Test Circuit

100k

475k

10Ω

4

3

0.01μF

–

+

158k

316k

475k

1

LTC2050

–

TO X-Y

RECORDER

0.1μF

0.01μF

LT1012

+

2050 TC02

FOR 1Hz NOISE BW INCREASE ALL THE CAPACITORS BY A FACTOR OF 10.

2050fb

9

LTC2050/LTC2050HV

APPLICATIONS INFORMATION

Shutdown

multipliedbytheclosedloopgainoftheopamp. Toreduce

this form of clock feedthrough, use smaller valued gain

settingresistorsandminimizethesourceresistanceatthe

input. If the resistance seen at the inputs is less than 10k,

TheLTC2050includesashutdownpininthe6-leadSOT-23

and the SO-8 version. When this active low pin is high or

allowed to ﬂoat, the device operates normally. When the

shutdown pin is pulled low, the device enters shutdown

mode;supplycurrentdropsto3μA, allclockingstops, and

both inputs and output assume a high impedance state.

this form of clock feedthrough is less than 1μV

input

RMS

referredat7.5kHz,orlessthantheamountofresidueclock

feedthrough from the ﬁrst form described above.

Placing a capacitor across the feedback resistor reduces

eitherformofclockfeedthroughbylimitingthebandwidth

of the closed loop gain.

Clock Feedthrough, Input Bias Current

The LTC2050 uses auto-zeroing circuitry to achieve an

almost zero DC offset over temperature, common mode

voltage, and power supply voltage. The frequency of the

clock used for auto-zeroing is typically 7.5kHz. The term

clock feedthrough is broadly used to indicate visibility of

thisclockfrequencyintheopampoutputspectrum. There

are typically two types of clock feedthrough in auto zeroed

op amps like the LTC2050.

Input bias current is deﬁned as the DC current into the

input pins of the op amp. The same current spikes that

cause the second form of clock feedthrough described

above, whenaveraged, dominatetheDCinputbiascurrent

of the op amp below 70°C.

At temperatures above 70°C, the leakage of the ESD

protection diodes on the inputs increases the input bias

currents of both inputs in the positive direction, while

the current caused by the charge injection stays rela-

tivelyconstant. Atelevatedtemperatures(above85°C)the

leakage current begins to dominate and both the negative

and positive pin’s input bias currents are in the positive

direction (into the pins).

Theﬁrstformofclockfeedthroughiscausedbythesettling

of the internal sampling capacitor and is input referred;

that is, it is multiplied by the closed loop gain of the op

amp. This form of clock feedthrough is independent of the

magnitudeoftheinputsourceresistanceorthemagnitude

of the gain setting resistors. The LTC2050 has a residue

clock feedthrough of less then 1μV

at 7.5kHz.

input referred

RMS

Input Pins, ESD Sensitivity

The second form of clock feedthrough is caused by the

small amount of charge injection occurring during the

sampling and holding of the op amp’s input offset voltage.

Thecurrentspikesaremultipliedbytheimpedanceseenat

the input terminals of the op amp, appearing at the output

ESD voltages above 700V on the input pins of the op amp

will cause the input bias currents to increase (more DC

current into the pins). At these voltages, it is possible to

damage the device to a point where the input bias current

exceeds the maximums speciﬁed in this data sheet.

2050fb

10

LTC2050/LTC2050HV

TYPICAL APPLICATIONS

Single Supply Thermocouple Ampliﬁer

1k

1%

255k

1%

100Ω

0.068μF

5V

5

5V

4

3

2

–

+

1

V

OUT

LT1025A

LTC2050

2

10mV/°C

7

–

K

+

GND R–

0.1μF

5

4

TYPE K

LT1025 COMPENSATES COLD JUNCTION

OVER 0°C TO 100°C TEMPERATURE RANGE

2050 TA03

Gain of 1001 Single Supply Instrumentation Ampliﬁer

0.1μF

10Ω

+

10k

V

10k

+

4

3

5

V

–

+

10Ω

4

3

1

5

LTC2050

2

–

+

LTC2050

2

1

V

–V

OUT

IN

+V

IN

OUTPUT DC OFFSET ≤ 6mV

FOR 0.1% RESISTORS, CMRR = 54dB

2050 TA04

2050fb

11

LTC2050/LTC2050HV

TYPICAL APPLICATIONS

Instrumentation Ampliﬁer with 100V Common Mode Input Voltage

1k

1M

+

V

+

1M

+

V

5

4

3

–

1k

5

4

3

1

V

IN

–

LTC2050HV

–

1M

1

+

V

OUT

LTC2050HV

2

+

–

2

V

1k

–

V

OUTPUT OFFSET ≤3mV

FOR 0.1% RESISTORS, CMRR = 54dB

2050 TA06

High Precision Three-Input Mux

Low-Side Power Supply Current Sensing

1.1k

10k

5V

SHDN

5

OUT

3

4

SEL1

+

4

3

3V/AMP

5

–

+

1

LOAD CURRENT

IN MEASURED

CIRCUIT, REFERRED

TO –5V

LTC2050HV

1

LTC2050

10k

–

IN 1

= 10

2

A

V

10Ω

10k

OUT

10Ω

TO

MEASURED

CIRCUIT

3mΩ

LOAD CURRENT

SHDN

SEL2

0.1μF

4

3

5

2050 TA08

–5V

–

+

LTC2050

IN 2

= 1000

A

V

SHDN

SEL3

4

3

5

–

+

LTC2050

IN 3

= 1

A

V

2050 TA07

SELECT INPUTS ARE CMOS LOGIC COMPATIBLE

2050fb

12

LTC2050/LTC2050HV

PACKAGE DESCRIPTION

S5 Package

5-Lead Plastic TSOT-23

(Reference LTC DWG # 05-08-1635)

0.62

MAX

0.95

REF

2.90 BSC

(NOTE 4)

1.22 REF

1.50 – 1.75

(NOTE 4)

2.80 BSC

1.4 MIN

3.85 MAX 2.62 REF

PIN ONE

RECOMMENDED SOLDER PAD LAYOUT

PER IPC CALCULATOR

0.30 – 0.45 TYP

5 PLCS (NOTE 3)

0.95 BSC

0.80 – 0.90

0.20 BSC

DATUM ‘A’

0.01 – 0.10

1.00 MAX

0.30 – 0.50 REF

1.90 BSC

0.09 – 0.20

(NOTE 3)

NOTE:

S5 TSOT-23 0302 REV B

1. DIMENSIONS ARE IN MILLIMETERS

2. DRAWING NOT TO SCALE

3. DIMENSIONS ARE INCLUSIVE OF PLATING

4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR

5. MOLD FLASH SHALL NOT EXCEED 0.254mm

6. JEDEC PACKAGE REFERENCE IS MO-193

2050fb

13

LTC2050/LTC2050HV

PACKAGE DESCRIPTION

S6 Package

6-Lead Plastic TSOT-23

(Reference LTC DWG # 05-08-1636)

2.90 BSC

(NOTE 4)

0.62

MAX

0.95

REF

1.22 REF

1.4 MIN

1.50 – 1.75

2.80 BSC

3.85 MAX 2.62 REF

(NOTE 4)

PIN ONE ID

RECOMMENDED SOLDER PAD LAYOUT

PER IPC CALCULATOR

0.30 – 0.45

6 PLCS (NOTE 3)

0.95 BSC

0.80 – 0.90

0.20 BSC

DATUM ‘A’

0.01 – 0.10

1.00 MAX

0.30 – 0.50 REF

1.90 BSC

0.09 – 0.20

(NOTE 3)

S6 TSOT-23 0302 REV B

NOTE:

1. DIMENSIONS ARE IN MILLIMETERS

2. DRAWING NOT TO SCALE

3. DIMENSIONS ARE INCLUSIVE OF PLATING

4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR

5. MOLD FLASH SHALL NOT EXCEED 0.254mm

6. JEDEC PACKAGE REFERENCE IS MO-193

2050fb

14

LTC2050/LTC2050HV

PACKAGE DESCRIPTION

S8 Package

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

(Reference LTC DWG # 05-08-1610)

.189 – .197

(4.801 – 5.004)

.045 .005

NOTE 3

.050 BSC

7

5

8

6

.245

MIN

.160 .005

.150 – .157

(3.810 – 3.988)

NOTE 3

.228 – .244

(5.791 – 6.197)

.030 .005

TYP

1

3

4

2

RECOMMENDED SOLDER PAD LAYOUT

.010 – .020

(0.254 – 0.508)

× 45°

.053 – .069

(1.346 – 1.752)

.004 – .010

(0.101 – 0.254)

.008 – .010

(0.203 – 0.254)

0°– 8° 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

2050fb

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.

15

LTC2050/LTC2050HV

TYPICAL APPLICATION

Ground Referred Precision Current Sources

LT1034

0 ≤ I

≤ 4mA

OUT

–

(V ) + 1.5V ≤ V

≤ – 1V

OUT

+

V

OUT

–

1.235V

= ———

10k

I

OUT

4

3

5

R

SET

–

+

1

LTC2050

2

3

4

R

SET

5

+

1

LTC2050

2

R

SET

10k

–

1.235V

= ———

I

OUT

–

R

SET

+

V

OUT

–

0 ≤ I

≤ 4mA

OUT

LT1034

+

0.2V ≤ V

≤ (V ) – 1.5V

2050 TA05

RELATED PARTS

PART NUMBER

LTC1049

DESCRIPTION

COMMENTS

Low Supply Current 200μA

Low Power Zero-Drift Op Amp

Precision Zero-Drift Op Amp

15V Zero-Drift Op Amp

LTC1050

Single Supply Operation 4.75V to 16V, Noise Tested and Guaranteed

Dual/Quad

LTC1051/LTC1053

LTC1150

High Voltage Operation 18V

LTC1152

Rail-to-Rail Input and Output Zero-Drift Op Amp

Single Zero-Drift Op Amp with Rail-to-Rail Input and Output and Shutdown

LT1677

Low Noise Rail-to-Rail Input and Output

Precision Op Amp

V

= 90μV, V = 2.7V to 44V

S

OS

LT1884/LT1885

LTC2051

Rail-to-Rail Output Precision Op Amp

Dual Zero-Drift Op Amp

V

= 50μV, IB = 400pA, V = 2.7V to 40V

S

OS

Dual Version of the LTC2050 in MS8 Package

2050fb

LT 0208 REV B • PRINTED IN USA

LinearTechnology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

16

●

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


型号：	LTC2050CS5-TR
厂家：	Linear
描述：	Zero-Drift Operational Amplifi ers in SOT-23 零漂移运算功率放大器在ERS SOT- 23 放大器功率放大器
文件：	总16页 (文件大小：175K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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