LINEAR TECHNOLOGY LTC1051, LTC1053 Technical data

FEATURES

LTC1051/LTC1053

Dual/Quad Precision

Zero-Drift Operational Amplifiers

With Internal Capacitors

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DESCRIPTIO

■

Dual/Quad Low Cost Precision Op Amp

■

No External Components Required

■

Maximum Offset Voltage: 5µV

■

Maximum Offset Voltage Drift: 0.05µV/°C

■

Low Noise 1.5µV

■

Minimum Voltage Gain: 120dB

■

Minimum PSRR: 120dB

■

Minimum CMRR: 114dB

■

Low Supply Current: 1mA/Op Amp

■

Single Supply Operation: 4.75V to 16V

■

Input Common Mode Range Includes Ground

■

Output Swings to Ground

■

Typical Overload Recovery Time: 3ms

■

Pin Compatible with Industry Standard Dual and

(0.1Hz to 10Hz)

P-P

Quad Op Amps

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APPLICATIO S

■

Thermocouple Amplifiers

■

Electronic Scales

■

Medical Instrumentation

■

Strain Gauge Amplifiers

■

High Resolution Data Acquisition

■

DC Accurate R C Active Filters

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

The LTC®1051/LTC1053 are high performance, low cost
dual/quad zero-drift operational amplifiers. The unique
achievement of the LTC1051/LTC1053 is that they integrate
on chip the sample-and-hold capacitors usually required
externally by other chopper amplifiers. Further, the
LTC1051/LTC1053 offer better combined overall DC and
AC performance than is available from other chopper
stabilized amplifiers with or without internal sample/hold
capacitors.

The LTC1051/LTC1053 have an offset voltage of 0.5µV,
drift of 0.01µV/°C, DC to 10Hz, input noise voltage typically

1.5µV

and typical voltage gain of 140dB. The slew rate

P-P

of 4V/µs and gain bandwidth product of 2.5MHz are
achieved with only 1mA of supply current per op amp.

Overload recover times from positive and negative
saturation conditions are 1.5ms and 3ms respectively,
about a 100 or more times improvement over chopper
amplifiers using external capacitors.

The LTC1051 is available in an 8-lead standard plastic
dual-in-line package as well as a 16-pin SW package. The
LTC1053 is available in a standard 14-pin plastic package
and an 18-pin SO. The LTC1051/LTC1053 are plug in
replacements for most standard dual/quad op amps with
improved performance.

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TYPICAL APPLICATIO

High Performance Low Cost Instrumentation Amplifier LTC1051 Noise Spectrum

120

6

5

–

LTC1051

+

1/2

R2

–5V

100

80

7

4

1051/53 TA01a

VOLTAGE NOISE DENSITY (nV√Hz)

60

40

20

10

100 1k 10k

FREQUENCY (Hz)

R1

5V

R2

2

8

–

1/2

LTC1051

3

V

+

IN

R1 = 499Ω, 0.1%
R2 = 100k, 0.1%
GAIN = 201
MEASURED CMRR ~ 120dB AT DC
MEASURED INPUT V
MEASURED INPUT NOISE 2µV

3µV

OS

P-P

1

(DC – 10Hz)

R1

V

IN

1051/53 TA01b

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1

LTC1051/LTC1053

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ABSOLUTE AXI U RATI GS

(Note 1)

Total Supply Voltage (V+ to V–) ............................ 16.5V

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

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

Operating Temperature Range

LTC1051M, LTC1051AM

LTC1051C/LTC1053C ......................... – 40°C to 85°C

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

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

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W

PACKAGE/ORDER I FOR ATIO

TOP VIEW

OUT A

1

–IN A

2

+IN A

3

–

V

4

N8 PACKAGE
8-LEAD PDIP

T

= 150°C, θJA = 110°C/W

JMAX

J8 PACKAGE

8-LEAD CERDIP

+

V

8

OUT B

7

–IN B

6

+IN B

5

OBSOLETE PACKAGE

Consider the N8 Package as an Alternate Source

TOP VIEW

1

NC

2

NC

3

OUT A

4

–IN A

5

+IN A

–

6

V

7

NC

8

NC

SW PACKAGE

16-LEAD PLASTIC SO

T

= 150°C, θJA = 90°C/W

JMAX

Consult LTC Marketing for parts specified with wider operating temperature ranges.

16

NC

15

NC

+

14

V

13

OUT B

12

–IN B

11

+IN B

10

NC

9

NC

ORDER PART

NUMBER

LTC1051CN8
LTC1051MJ8
LTC1051CJ8
LTC1051AMJ8
LTC1051ACJ8

ORDER PART

NUMBER

LTC1051CSW LTC1053CSW

OUT A

–IN A

+IN A

+IN B

–IN B

OUT B

TOP VIEW

1

OUT A

2

–IN A

3

+IN A

+

4

V

5

+IN B

6

–IN B

7

OUT B

N PACKAGE

14-LEAD PDIP

T

= 150°C, θJA = 65°C/W

JMAX

TOP VIEW

1

NC

2

3

4

+

5

V

6

7

8

9

NC

SW PACKAGE

18-LEAD PLASTIC SO

T

= 150°C, θJA = 85°C/W

JMAX

(OBSOLETE) .. –55°C to 125°C

ORDER PART

OUT D

14

–IN D

13

+IN D

12

–

V

11

+IN C

10

–IN C

9

OUT C

8

NUMBER

LTC1053CN

ORDER PART

18

NC

17

OUT D

16

–IN D

15

+IN D

–

14

V

13

+IN C

12

–IN C

11

OUT C

10

NC

NUMBER

ELECTRICAL CHARACTERISTICS

The ● denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VS = ±5V unless otherwise noted.

LTC1051/LTC1053 LTC1051A

PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS

Input Offset Voltage ±0.5 ±5 ±0.5 ±5 µV
Average Input Offset Drift ● ±0.0 ±0.05 ±0.0 ±0.05 µV/°C

Long Term Offset Drift 50 50 nV/√Mo

Input Bias Current ±15 ±65 ±15 ±50 pA

LTC1051C/LTC1053C

● ±135 ±100 pA

Input Offset Current (All Grades) ±30 ±125 ±30 ±100 pA

● ±175 ±150 pA

Input Noise Voltage (Note 2) RS = 100Ω, DC to 10Hz 1.5 1.5 2 µV

RS = 100Ω, DC to 1Hz 0.4 0.4 µV

P-P
P-P

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2

LTC1051/LTC1053

ELECTRICAL CHARACTERISTICS

The ● denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VS = ±5V unless otherwise noted.

LTC1051/LTC1053 LTC1051A

PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS

Input Noise Current f = 10Hz 2.2 2.2 fA/√Hz

Common Mode Rejection Ratio, CMRR VCM = V

Differential CMRR VCM = V

LTC1051, LTC1053 (Note 3)

Power Supply Rejection Ratio VS = ±2.375V to ±8V ● 116 140 120 140 dB

Large Signal Voltage Gain RL = 10k, V

Maximum Output Voltage Swing RL = 10k ● ±4.5 ±4.85 ±4.7 ±4.85 V

Slew Rate RL = 10k, CL = 50pF 4 4 V/µs

Gain Bandwidth Product 2.5 2.5 MHz

Supply Current/Op Amp No Load 1 2 1 2 mA

Internal Sampling Frequency 3.3 3.3 kHz

–

to 2.7V 106 130 114 130 dB

● 100 110 dB

–

to 2.7V 112 112 dB

= ±4V ● 116 160 120 160 dB

OUT

R

= 100k ±4.5 ±4.95 ±4.95 V

L

● 2.5 2.5 mA

The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.
VS = ±5V unless otherwise noted.VS = 5V, GND unless otherwise noted.

LTC1051A/LTC1051/LTC1053

PARAMETER CONDITIONS MIN TYP MAX UNITS

Input Offset Voltage ±0.5 ±5 µV

Input Offset Drift ±0.01 ±0.05 µV/°C

Input Bias Current ±10 ±50 pA

Input Offset Current ±20 ±80 pA

Input Noise Voltage DC to 10Hz 1.8 µV
Supply Current/Op Amp No Load ● 1.5 mA

Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.

Note 2: For guaranteed noise specification contact LTC Marketing.

Note 3: Differential CMRR for the LTC1053 is measured between

amplifiers A and D, and amplifiers B and C.

P-P

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LTC1051/LTC1053

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TYPICAL PERFOR A CE CHARACTERISTICS

Common Mode Input Range vs
Supply Voltage

8

6

4

2

0

–2

–4

COMMON MODE RANGE (V)

–6

–8

0

12345678

SUPPLY VOLTAGE (±V)

VCM = V

–

Supply Current vs Supply Voltage
Per Op Amp

1.50
TA = 25°C

1.25

(mA)

S

1.00

0.75

0.50

SUPPLY CURRENT, I

0.25

0

4

TOTAL SUPPLY VOLTAGE V+ TO V– (V)

81012

6

1051/53 G01

14 16

1051/53 G04

Sampling Frequency vs Supply
Voltage

4.0
TA = 25°C

(kHz)

3.5

S

3.0

2.5

SAMPLING FREQUENCY, f

2.0

4

681012

TOTAL SUPPLY VOLTAGE, V+ TO V– (V)

14 16

1051/53 G02

Sampling Frequency vs
Temperature

VS = ±5V

5

(kHz)

S

4

3

2

SAMPLING FREQUENCY, f

1

–50

0

–25

AMBIENT TEMPERATURE, TA (°C)

25

Supply Current vs Temperature
Per Op Amp Gain/Phase vs Frequency

2.0
VS = ±5V

1.8

1.6

1.4

(mA)

S

1.2

1.0

0.8

0.6

SUPPLY CURRENT, I

0.4

0.2

0

–50

–25

AMBIENT TEMPERATURE, TA (°C)

0

75

100

1051/53 G05

50

25

VOLTAGE GAIN (dB)

–20

–40

125

120

100

80

60

40

20

0

100 10k 100k 10M

1k 1M

FREQUENCY (Hz)

50

75

100

1051/53 G03

VS = ±5V

= 100pF

C

L

≥ 1k

R

L

= 25°C

T

A

1051/53 G06

125

60

80

PHASE SHIFT (DEGREES)

100

120

140

160

180

200

220

Output Short-Circuit Current vs
Supply Voltage

6

(mA)

4

OUT

I

2

0

–10

–20

SHORT-CIRCUIT OUTPUT CURRENT, I

–30

4

TOTAL SUPPLY VOLTAGE, V+ TO V– (V)

SOURCE

I

SINK

81012

6

4

CMRR vs Frequency Gain/Phase vs Frequency

≥ 1k

1051/53 G09

–60

–80

PHASE SHIFT (DEGREES)

–100

–120

–140

–160

–180

–200

–220

10513fa

–

V

= V

OUT

+

V

= V

OUT

14 16

1051/53 G07

160

140

120

100

80

CMRR (dB)

60

40

VS = ±5V

20

= 25°C

T

A

AC COMMON MODE IN = 0.5V

0

1 100 1k

10 10k 100k

P-P

FREQUENCY (Hz)

1051/53 G08

120

100

80

60

40

20

VOLTAGE GAIN (dB)

0

–20

–40

100 10k 100k 10M

1k 1M

FREQUENCY (Hz)

VS = ±2.5V
C
R
T

A

= 100pF

L
L

= 25°C

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TYPICAL PERFOR A CE CHARACTERISTICS

LTC1051/LTC1053

INPUT

OUTPUT

Overload Recovery

400mV

0

0

–5V

AV = –100

= ±5V

V

S

LTC1051/LTC1053 DC to 10Hz Noise

VS = ±5V

= 25°C

T

A

1µV

0.5ms

1051/53 G10

1.4µV

OUTPUT

50mV

INPUT

100mV

P-P

Small Signal Transient Response Large Signal Transient Response

OUTPUT

/DIV

A

= 1, RL = 10k, CL = 100pF

V

= ±5V, TA = 25°C

V

S

2µs/DIV

1051/53 G11

2V/DIV

INPUT

6V

A

= 1, RL = 10k, CL = 100pF

V

= ±5V, TA = 25°C

V

S

2µs/DIV

1051/53 G12

1 SEC

TEST CIRCUITS

Electrical Characteristics Test Circuit DC 10Hz Noise Test Circuit

1M

+

V

1k

2

3

–

LTC1051

+

1/2

8

6

OUTPUT

4

–

V

R

L

10Ω

100k

2

–

1/2

LTC1051

3

+

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

158k 316k 475k

6

0.1µF 0.01µF

475k

10 SEC

–

LT1012

+

0.01µF

TO X-Y
RECORDER

1051/53 TC01

10513fa

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