Linear LT1007CS8, LT1007IS8, LT1037CS8, LT1037IS8 Schematic [ru]

FEATURES

■

Guaranteed

■

Guaranteed

■

0.1Hz to 10Hz Noise, 60nV

■

Guaranteed

■

Guaranteed

■

Guaranteed

■

Guaranteed

■

Guaranteed

■

Guaranteed

4.5nV/√Hz 10Hz Noise

3.8nV/√Hz 1kHz Noise

Typical

P-P

7 Million Min Voltage Gain, RL = 2k
3 Million Min Voltage Gain, RL = 600Ω
25µV Max Offset Voltage

0.6µV/°C Max Drift with Temperature
11V/µs Min Slew Rate (LT1037)
117dB Min CMRR

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APPLICATIO S

■

Low Noise Signal Processing

■

Microvolt Accuracy Threshold Detection

■

Strain Gauge Amplifiers

■

Direct Coupled Audio Gain Stages

■

Sine Wave Generators

■

Tape Head Preamplifiers

■

Microphone Preamplifiers

LT1007/LT1037

Low Noise, High Speed

Precision Operational Amplifiers

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DESCRIPTIO

The LT®1007/LT1037 series features the lowest noise
performance available to date for monolithic operational
amplifiers: 2.5nV/√Hz wideband noise (less than the noise of
a 400Ω resistor), 1/f corner frequency of 2Hz and 60nV peak­to-peak 0.1Hz to 10Hz noise. Low noise is combined with
outstanding precision and speed specifications: 10µV offset
voltage, 0.2µV/°C drift, 130dB common mode and power
supply rejection, and 60MHz gain bandwidth product on the
decompensated LT1037, which is stable for closed-loop
gains of 5 or greater.

The voltage gain of the LT1007/LT1037 is an extremely high
20 million driving a 2kΩ load and 12 million driving a 600Ω
load to ±10V.

In the design, processing and testing of the device, particular
attention has been paid to the optimization of the entire
distribution of several key parameters. Consequently, the
specifications of even the lowest cost grades (the LT1007C
and the LT1037C) have been spectacularly improved com­pared to equivalent grades of competing amplifiers.

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

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TYPICAL APPLICATIO

Ultrapure 1kHz Sine Wave Generator

430Ω

–

2

#327 LAMP

LT1037

+

3

CR

TOTAL HARMONIC DISTORTION = < 0.0025%
NOISE = < 0.0001%
AMPLITUDE = ±8V
OUTPUT FREQUENCY = 1.000kHz FOR VALUES GIVEN ±0.4%

6

R

OUTPUT

C

1

f =

2πRC

R = 1591.5Ω ±0.1%
C = 0.1µF ±0.1%

1007/37 TA01

The sine wave generator application shown below utilizes the
low noise and low distortion characteristics of the LT1037.

0.1Hz to 10Hz Noise

VOLTAGE NOISE (20nV/DIV)

0246

TIME (SEC)

8

1007/37 TA02

sn100737 100737fbs

10

1

LT1007/LT1037

TOP VIEW

S8 PACKAGE

8-LEAD PLASTIC SO

1

2

3

4

8

7

6

5

V

OS

TRIM

V

OS

TRIM
V

+

OUT
NC

–IN
+IN

V

–

–

+

WW

W

ABSOLUTE MAXIMUM RATINGS

Supply Voltage ...................................................... ±22V

Input Voltage ............................ Equal to Supply Voltage

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(Note 1)

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

Operating Temperature Range

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

Differential Input Current (Note 9) ..................... ±25mA

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

U

W

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PACKAGE/ORDER INFORMATION

TOP VIEW

TOP VIEW

V

OS

1

TRIM

–IN

2

–
+

3

–

4

N8 PACKAGE
8-LEAD PDIP

= 100°C, θJA = 130°C/ W (N8)

T

+IN

V

JMAX

V

OS

8

TRIM

+

V

7

OUT

6

NC

5

–IN

T

= 150°C, θJA = 150°C/ W, θJC = 45°C/W

JMAX

ORDER PART NUMBER ORDER PART NUMBER ORDER PART NUMBER

LT1007ACN8
LT1007CN8
LT1007IN8

T

= 150°C, θJA = 100°C/ W (J8)

JMAX

LT1007ACJ8
LT1007AMJ8
LT1007CJ8
LT1007MJ8

LT1037ACN8
LT1037CN8
LT1037IN8

J8 PACKAGE

LEAD CERDIP

LT1037ACJ8
LT1037AMJ8
LT1037CJ8
LT1037MJ8

LT1007ACH
LT1007AMH
LT1007CH
LT1007MH

OBSOLETE PACKAGE OBSOLETE PACKAGE

Consider the N8 Package for Alternate Source Consider the N8 or S8 Package for Alternate Source

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

VOS TRIM

1

2

3

8

–
+

4

–

V

(CASE)

H PACKAGE

V

OS

TRIM

+IN

8-LEAD TO-5 METAL CAN

LT1007/LT1037AC, C ............................. 0°C to 70°C

LT1007/LT1037I ............................... –40°C to 85°C

LT1007/LT1037AM, M (OBSOLETE) –55°C to 125°C

+

V

7

6

OUT

5

NC

T

= 150°C, θJA = 190°C/W

JMAX

LT1007CS8
LT1007IS8

LT1037CS8
LT1037IS8

S8 PART MARKING
LT1037ACH
LT1037AMH
LT1037CH

1007
1007I

1037
1037I

LT1037MH

ELECTRICAL CHARACTERISTICS

SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS

V

OS

∆V

OS

∆Time
I

OS

I

B

e

n

i

n

Input Offset Voltage (Note 2) 10 25 20 60 µV
Long Term Input Offset (Notes 3, 4) 0.2 1.0 0.2 1.0 µV/Mo

Voltage Stability
Input Offset Current 7 30 12 50 nA
Input Bias Current ±10 ±35 ±15 ±55 nA
Input Noise Voltage 0.1Hz to 10Hz (Notes 4, 6) 0.06 0.13 0.06 0.13 µV
Input Noise Voltage Density fO = 10Hz (Notes 4, 5) 2.8 4.5 2.8 4.5 nV/√Hz

= 1000Hz (Note 4) 2.5 3.8 2.5 3.8 nV/√Hz

f

O

Input Noise Current Density fO = 10Hz (Notes 4, 7) 1.5 4.0 1.5 4.0 pA/√Hz

fO = 1000Hz (Notes 4, 7) 0.4 0.6 0.4 0.6 pA/√Hz

VS = ±15V, TA = 25°C, unless otherwise noted.

LT1007AC/AM LT1007C/I/M
LT1037AC/AM LT1037C/I/M

sn100737 100737fbs

2

P-P

LT1007/LT1037

ELECTRICAL CHARACTERISTICS

SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS

Input Resistance, Common Mode 7 5 GΩ
Input Voltage Range ±11.0 ±12.5 ±11.0 ±12.5 V

CMRR Common Mode Rejection Ratio VCM = ±11V 117 130 110 126 dB
PSRR Power Supply Rejection Ratio VS = ±4V to ±18V 110 130 106 126 dB
A

VOL

V

OUT

SR Slew Rate LT1007 RL ≥ 2k 1.7 2.5 1.7 2.5 V/µs

GBW Gain Bandwidth LT1007 fO = 100kHz (Note 8) 5.0 8.0 5.0 8.0 MHz

Z

O

P

D

Large-Signal Voltage Gain RL ≥ 2k, VO = ±12V 7.0 20.0 5.0 20.0 V/µV

≥ 1k, VO = ±10V 5.0 16.0 3.5 16.0 V/µV

R

L

≥ 600Ω, VO = ±10V 3.0 12.0 2.0 12.0 V/µV

R

L

Maximum Output Voltage Swing RL ≥ 2k ±13.0 ±13.8 ±12.5 ±13.5 V

≥ 600Ω±11.0 ±12.5 ±10.5 ±12.5 V

R

L

LT1037 A

Product LT1037 f
Open-Loop Output Resistance VO = 0V, IO = 0 70 70 Ω
Power Dissipation LT1007 80 120 80 140 mW

LT1037 80 130 85 140 mW

≥ 5 1115 1115 V/µs

VCL

= 10kHz (Note 8) (A

O

VS = ±15V, TA = 25°C, unless otherwise noted.

LT1007AC/AM LT1007C/I/M
LT1037AC/AM LT1037C/I/M

≥ 5) 45 60 45 60 MHz

VCL

The ● denotes the specifications which apply over the temperature range 0°C ≤ TA ≤ 70°C, VS = ±15V, unless otherwise noted.

LT1007AC LT1007C
LT1037AC LT1037C

SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS

V

OS

∆V

OS

∆Temp
I

OS

I

B

CMRR Common Mode Rejection Ratio VCM = ±10.5V ● 114 126 106 120 dB
PSRR Power Supply Rejection Ratio VS = ±4.5V to ±18V ● 106 126 102 120 dB
A

VOL

V

OUT

P

D

Input Offset Voltage (Note 2) ● 20 50 35 110 µV
Average Input Offset Drift (Note 10) ● 0.2 0.6 0.3 1.0 µV/°C

Input Offset Current ● 10 40 15 70 nA
Input Bias Current ● ±14 ±45 ±20 ±75 nA
Input Voltage Range ● ±10.5 ±11.8 ±10.5 ±11.8 V

Large-Signal Voltage Gain RL ≥ 2k, VO = ±10V ● 4.0 18.0 2.5 18.0 V/µV

≥ 1k, VO = ±10V ● 2.5 14.0 2.0 14.0 V/µV

R

L

Maximum Output Voltage Swing RL ≥ 2k ● ±12.5 ±13.6 ±12.0 ±13.6 V
Power Dissipation ● 90 144 90 160 mW

sn100737 100737fbs

3

LT1007/LT1037

ELECTRICAL CHARACTERISTICS

The ● denotes the specifications which apply over the temperature range –40°C ≤ TA ≤ 85°C, VS = ±15V, unless otherwise noted.

LT1007I/LT1037I

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

V

OS

∆V

OS

∆Temp
I

OS

I

B

CMRR Common Mode Rejection Ratio VCM = ±10.5V ● 105 120 dB
PSRR Power Supply Rejection Ratio VS = ±4.5V to ±18V ● 101 120 dB
A

VOL

V

OUT

P

D

The ● denotes the specifications which apply over the temperature range –55°C ≤ TA ≤ 125°C, VS = ±15V, unless otherwise noted.

SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS

V

OS

∆V

OS

∆Temp
I

OS

I

B

CMRR Common Mode Rejection Ratio VCM = ±10.3V ● 112 126 104 120 dB
PSRR Power Supply Rejection Ratio VS = ±4.5V to ±18V ● 104 126 100 120 dB
A

VOL

V

OUT

P

D

For MIL-STD components, please refer to LTC 883C data sheet for test
listing and parameters.

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

Note 2: Input Offset Voltage measurements are performed by automatic
test equipment approximately 0.5 seconds after application of power. AM
and AC grades are guaranteed fully warmed up.

Note 3: Long Term Input Offset Voltage Stability refers to the average
trend line of Offset Voltage vs Time over extended periods after the first 30
days of operation. Excluding the initial hour of operation, changes in V
during the first 30 days are typically 2.5µV. Refer to typical performance
curve.

Note 4: This parameter is tested on a sample basis only.

Input Offset Voltage (Note 2) ● 40 125 µV
Average Input Offset Drift (Note 10) ● 0.3 1.0 µV/°C

Input Offset Current ● 20 80 nA
Input Bias Current ● ±25 ±90 nA
Input Voltage Range ● ±10 ±11.7 V

Large-Signal Voltage Gain RL ≥ 2k, VO = ±10V ● 2.0 15.0 V/µV

R

≥ 1k, VO = ±10V ● 1.5 12.0 V/µV

L

Maximum Output Voltage Swing RL ≥ 2k ● ±12.0 ±13.6 V
Power Dissipation ● 95 165 mW

LT1007AM/LT1037AM LT1007M/LT1037M

Input Offset Voltage (Note 2) ● 25 60 50 160 µV
Average Input Offset Drift (Note 10) ● 0.2 0.6 0.3 1.0 µV/°C

Input Offset Current ● 15 50 20 85 nA
Input Bias Current ● ±20 ±60 ±35 ±95 nA
Input Voltage Range ● ±10.3 ±11.5 ±10.3 ±11.5 V

Large-Signal Voltage Gain RL ≥ 2k, VO = ±10V ● 3.0 14.0 2.0 14.0 V/µV

R

≥ 1k, VO = ±10V ● 2.0 10.0 1.5 10.0 V/µV

L

Maximum Output Voltage Swing RL ≥ 2k ● ±12.5 ±13.5 ±12.0 ±13.5 V
Power Dissipation ● 100 150 100 170 mW

Note 5: 10Hz noise voltage density is sample tested on every lot. Devices
100% tested at 10Hz are available on request.

Note 6: See the test circuit and frequency response curve for 0.1Hz to
10Hz tester in the Applications Information section.

Note 7: See the test circuit for current noise measurement in the
Applications Information section.

Note 8: This parameter is guaranteed by design and is not tested.
Note 9: The inputs are protected by back-to-back diodes. Current limiting

resistors are not used in order to achieve low noise. If differential input

OS

voltage exceeds ±0.7V, the input current should be limited to 25mA.
Note 10: The Average Input Offset Drift performance is within the

specifications unnulled or when nulled with a pot having a range of 8kΩ to
20kΩ.

4

sn100737 100737fbs

W

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TYPICAL PERFORMANCE CHARACTERISTICS

10Hz Voltage Noise Distribution

140

120

100

VS = ±15V

= 25°C

T

A

497 UNITS MEASURED
FROM SIX RUNS

Voltage Noise vs Frequency

100

VS = ±15V

= 25°C

T

A

30

LT1007/LT1037

0.02Hz to 10Hz RMS Noise. Gain = 50,000
(Measured on HP3582 Spectrum Analyzer)

80

60

NUMBER OF UNITS

40

20

0

0

3

1

VOLTAGE NOISE DENSITY (nV/√Hz)

4

2

7

5

68

0.01Hz to 1Hz Peak-to-Peak Noise

VOLTAGE NOISE (20nV/DIV)

0204060

TIME (SEC)

1007/37 G01

80

10

9

100

1007/37 G04

10

3

1/f CORNER = 2Hz

RMS VOLTAGE NOISE DENSITY (nV/√Hz)

1

0.1 100

1

10 1000

FREQUENCY (Hz)

Total Noise vs Source Resistance

1000

100

TOTAL NOISE DENSITY (nV/√Hz)

R

R

SOURCE RESISTANCE = 2R

10

1

0.1

AT 1kHz

AT 10Hz

RESISTOR
NOISE ONLY

1 10 100

SOURCE RESISTANCE (kΩ)

MAXIMUM

TYPICAL

1007/37 G02

VS = ±15V

= 25°C

T

A

1007/37 G05

MARKER AT 2Hz ( = 1/f CORNER) =

Voltage Noise vs Temperature

5

VS = ±15V

4

AT 10Hz

AT 1kHz

25

0

TEMPERATURE (°C)

RMS VOLTAGE NOISE DENSITY (nV/√Hz)

3

2

1

0

–50

–25

179µV/√Hz

50,000

50

75

= 3.59

1007/37 G03

100

1007/37 G06

nV

√Hz

125

Current Noise vs Frequency

10

3

MAXIMUM

100 1k 10k

FREQUENCY (Hz)

RMS NOISE DENSITY (pA/√Hz)

0.3

0.1

1

10

1/f CORNER = 120Hz

TYPICAL

1007/37 G07

Wideband Voltage Noise
(0.1Hz to Frequency Indicated)

10

1

0.1

RMS VOLTAGE NOISE (µV)

0.01

0.1

1 10 100

BANDWIDTH (kHz)

1007/37 G08

Voltage Noise vs Supply Voltage

5

TA = 25°C

4

AT 10Hz

AT 1kHz

15

10

sn100737 100737fbs

RMS VOLTAGE NOISE DENSITY (nV/√Hz)

3

2

1

0

5

0

SUPPLY VOLTAGE (±V)

20

25

1007/37 G09

5

LT1007/LT1037

TIME AFTER POWER ON (MINUTES)

0

CHANGE IN OFFSET VOLTAGE (µV)

10

8

6

4

2

0

4

1007/37 G15

1

2

3

5

VS = ±15V
T

A

= 25°C

DUAL-IN-LINE PACKAGE
PLASTIC (N8) OR CERDIP (J8)

METAL CAN (H) PACKAGE

SUPPLY VOLTAGE (±V)

0

SUPPLY CURRENT (mA)

20

1007/37 G18

5

10

15

4

3

2

1

0

125°C

25°C

–55°C

–1

0

1

–1

0

1

V

S

= ±15V

T

A

= 25°C

INPUT VOLTAGE (µV)

INPUT VOLTAGE (µV)

–15 –10 –5 0 5 10 15

OUTPUT VOLTAGE (V)

MEASURED ON TEKTRONIX 178 LINEAR IC TESTER

1007/37 G12

RL = 2k

R

L

= 600Ω

W

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TYPICAL PERFORMANCE CHARACTERISTICS

Voltage Gain vs Frequency

180
160
140
120
100

80
60

VOLTAGE GAIN (dB)

40
20

0

–20

0.01

0.1

LT1007

10

1

FREQUENCY (Hz)

100

10k

1k

Voltage Gain vs Load Resistance

25

VS = ±15V

= 25°C

T

A

20

15

10

5

OPEN-LOOP VOLTAGE GAIN (V/µV)

0

0.1 0.3 3

LOAD RESISTANCE (kΩ)

110

VS = ±15V
T

A

R

L

LT1037

100k

= 25°C

= 2k

10M

1M

1007/37 G10

1007/37 G13

100M

Voltage Gain vs Supply Voltage

25

TA = 25°C

20

15

10

5

OPEN-LOOP VOLTAGE GAIN (V/µV)

0

5

0

SUPPLY VOLTAGE (±V)

15

10

Voltage Gain vs Temperature

25

25

RL = 2k

RL = 1k

RL = 600Ω

50

20

15

10

VS = ±15V

VOLTAGE GAIN (V/µV)

5

0

–50

= ±10V

V

OUT

= ±8V FOR

V

OUT

≥ 100°C AND

T

A

= 600Ω

R

L

–25

0

TEMPERATURE (°C)

RL = 2k

RL = 600Ω

20

75

1007/37 G11

100

1007/37 G14

Voltage Gain, RL = 2k and 600Ω

25

Warm-Up Drift

125

Long Term Stability of Four
Representative Units

10

5

0

–5

OFFSET VOLTAGE CHANGE (µV)

–10

2

0

6

4

TIME (MONTHS)

0.2µV/MONTH

0.2µV/MONTH

TREND LINE

6

8

1007/37 G16

Offset Voltage Drift with Temperature
of Representative Units

50

VS = ±15V

40
30
20
10

0
–10
–20

OFFSET VOLTAGE (µV)

–30
–40

10

–50

–50

LT1007/LT1037
LT1007A/LT1037A

0

–25

TEMPERATURE (°C)

50

25

75

100

1007/37 G17

125

Supply Current vs Supply Voltage

sn100737 100737fbs