ANALOG DEVICES LT 1006 S8 Datasheet

FEATURES

Precision, Single Supply

DESCRIPTIO

U

LT1006

Op Amp

■

Single Supply Operation

Input Voltage Range Extends to Ground
Output Swings to Ground while Sinking Current

■

Guaranteed

■

Guaranteed

■

Guaranteed

■

Guaranteed

Offset Voltage: 50µV Max
Low Drift: 1.3µV/°C Max

Offset Current: 0.5nA Max

High Gain
5mA Load Current: 1.5 Million Min
17mA Load Current: 0.8 Million Min

■

Guaranteed

■

Supply Current can be Reduced by a Factor of 4

■

Low Voltage Noise, 0.1Hz to 10Hz: 0.55µV

Low Supply Current: 520µA Max

P-P

Low Current Noise—
Better than OP-07: 0.07pA/√Hz at 10Hz

■

High Input Impedance: 250MΩ Min

■

Minimum Supply Voltage: 2.7V Min

U

APPLICATIO S

■

Low Power Sample-and-Hold Circuits

■

Battery-Powered Precision Instrumentation

Strain Gauge Signal Conditioners
Thermocouple Amplifiers

■

4mA to 20mA Current Loop Transmitters

■

Active Filters

The LT®1006 is the first precision single supply operational
amplifier. Its design has been optimized for single supply
operation with a full set of specifications at 5V.
Specifications at ±15V are also provided.

The LT1006 has a low offset voltage of 20µV, drift of

0.2µV/°C, offset current of 120pA, gain of 2.5 million,
common mode rejection of 114dB and power supply
rejection of 126dB.

Although supply current is only 340µA, a novel output
stage can source or sink in excess of 20mA while retaining
high voltage gain. Common mode input range includes
ground to accommodate low ground-referenced inputs
from strain gauges or thermocouples, and output can
swing to within a few millivolts of ground. If a higher
slew rate (in excess of 1V/µs) or micropower operation
(supply current down to 90µA) is required, the operating
currents can be modified by connecting an external
optional resistor to Pin 8.

For similar single supply precision dual and quad op amps,
please see the LT1013/LT1014 data sheet. For micropower
dual and quad op amps, please see the LT1078/LT1079
data sheet.

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

TYPICAL APPLICATIO

LT1006 Single Supply, Micropower Sample and Hold

9V

360k

1/4 CD4066

390Ω 390ΩS3 S4

2

3

INPUT

0V TO 5V

SAMPLE-HOLD COMMAND

7

–

A1

LT1006

+

4

HIGH = SAMPLE

LOW = HOLD

8

6

1/2 CD4066

S1

S2

1/2 CD4066

LT1006 • TA01

U

1/4 CD4066

0.01µF

360k

8

2

–

A2

LT1006

3

+

4

ACQUISITION TIME 20µs
HOLD SETTLING TIME 10µs
S-H OFFSET 1mV
HOLD SUPPLY CURRENT 250µA
SAMPLE SUPPLY CURRENT 5.0mA
1kHz SAMPLE RATE CURRENT 800µA

Distribution of Input Offset Voltage

20

VS = 5V, 0V

18

T

= 25°C

A

350 LT1006s TESTED

16

FROM TWO RUNS

14

J AND N PACKAGES

12

10

UNITS (%)

7

6

OUTPUT

8

6

4

2

0

–80

–40

INPUT OFFSET VOLTAGE (µV)

40 80

0

LT1006 • G01

1006fa

1

LT1006

1

2

3

4

8

7

6

5

TOP VIEW

V

+

OUT

–IN

+IN

V

–

S8 PACKAGE

8-LEAD PLASTIC SO

N8 PACKAGE
8-LEAD PDIP

+

–

V

OS

TRIM

I

SY

SET

(NOTE 3)

V

OS

TRIM

(NOTE 4)

WWWU

ABSOLUTE AXI U RATI GS

(Note 1)

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

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

Input Voltage ............5V Below Negative Supply Voltage

Differential Input Voltage ......................................... 30V

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

UU

W

PACKAGE/ORDER I FOR ATIO

ORDER

TOP VIEW

ISY SET

(NOTE 3)

1

2

3

H PACKAGE

8

–
+

4

–

V

(CASE)

V

OS

TRIM

–IN

+IN

8-LEAD TO-5 METAL CAN

= 150°C, θJA = 150°C, θJC = 45°C

T

JMAX

V

7

6

5

V
TRIM
(NOTE 4)

+

OUT

OS

PART NUMBER

LT1006AMH
LT1006MH
LT1006ACH
LT1006CH

OBSOLETE PACKAGES

Consider the N8 or S8 Package for Alternate Source

Operating Temperature Range

LT1006AM/LT1006M (OBSOLETE)....– 55°C to 125°C

LT1006AC/LT1006C/LT1006S8 ............... 0°C to 70°C

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

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

ORDER

PART NUMBER

LT1006CN8
LT1006S8

S8 PART MARKING

T

= 100°C, θJA = 130°C/W (N8)

JMAX

T

= 150°C, θJA = 200°C/W (S8)

JMAX

J8 PACKAGE 8-LEAD CERDIP

T

= 100°C, θJA = 130°C/W

JMAX

1006

LT1006AMJ8
LT1006MJ8
LT1006ACJ8
LT1006CJ8

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

ELECTRICAL CHARACTERISTICS

VS = 5V, VCM = 0V, V

= 1.4V, TA = 25°C, unless otherwise noted.

OUT

LT1006AM/AC LT1006M/C

SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS

V

OS

Input Offset Voltage 20 50 30 80 µV

LT1006S8 80 400 µV

∆V

OS

Long-Term Input Offset 0.4 0.5 µV/Mo

∆Time Voltage Stability LT1006S8 0.7 µV/Mo

I

OS

I

B

e

n

Input Offset Current 0.12 0.5 0.15 0.9 nA

Input Bias Current 9 15 10 25 nA

Input Noise Voltage 0.1Hz to 10Hz 0.55 0.55 µV

Input Noise Voltage Density fO = 10Hz 23 32 23 32 nV/√Hz

f

= 1000Hz 22 25 22 25 nV/√Hz

O

i

n

Input Noise Current Density fO = 10Hz 0.07 0.08 pA/√Hz

Input Resistance (Note 2)

2

Differential Mode 180 400 100 300 MΩ
Common Mode 5 4 GΩ

P-P

1006fa

LT1006

ELECTRICAL CHARACTERISTICS

SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS

Input Voltage Range 3.5 3.8 3.5 3.8 V

CMRR Common Mode Rejection Ratio VCM = 0V to 3.5V 100 114 97 112 dB

PSRR Power Supply Rejection Ratio VS = ±2V to ±18V, VO = 0V 106 126 103 124 dB

A

VOL

SR Slew Rate 0.25 0.4 0.25 0.4 V/µs

I

S

Large-Signal Voltage Gain VO = 0.03V to 4V, RL = 10k 1.0 2.5 0.7 2.0 V/µV

= 0.03V to 3.5V, RL = 2k 0.5 2.0 0.3 1.8 V/µV

V

O

Maximum Output Voltage Swing Output Low, No Load 15 25 15 25 mV

Output Low, 600Ω to GND 5 10 5 10 mV
Output Low, I
Output High, No Load 4.0 4.4 4.0 4.4 V
Output High, 600Ω to GND 3.4 4.0 3.4 4.0 V

Supply Current R

Minimum Supply Voltage 2.7 2.7 V

= ∞ 340 520 350 570 µA

SET

= 180k Pin 8 to Pin 7 (Note 3) 90 90 µA

R

SET

VS = 5V, VCM = 0V, V

= 1mA 220 350 220 350 mV

SINK

= 1.4V, TA = 25°C, unless otherwise noted.

OUT

LT1006AM/AC LT1006M/C

0–0.3 0 – 0.3 V

The ● denotes the specifications which apply over the full operating temperature range. VS = 5V, 0V; VCM = 0.1V; VO = 1.4V;
–55°C ≤ TA ≤ 125°C, unless otherwise noted.

LT1006AM LT1006M

SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS

V

OS

∆V
∆Temp

I

OS

I

B

A

VOL

CMRR Common Mode Rejection Ratio VCM = 0.1V to 3.2V ● 90 103 87 102 dB

PSRR Power Supply Rejection Ratio VS = ±2V to ±18V, VO = 0V ● 100 117 97 116 dB

I

S

Input Offset Voltage ● 40 180 60 250 µV
Input Offset Voltage Drift ● 0.2 1.3 0.3 1.8 µV/°C

OS

Input Offset Current ● 0.4 2.0 0.5 4.0 nA
Input Bias Current ● 13 25 16 40 nA

Large-Signal Voltage Gain VO = 0.05V to 3.5V, RL = 2k ● 0.25 0.8 0.15 0.7 V/µV

Maximum Output Voltage Swing Output Low, 600Ω to GND ● 615 618mV

Output High, 600Ω to GND

Supply Current ● 380 630 400 680 µA

● 3.2 3.8 3.1 3.8 V

1006fa

3

LT1006

ELECTRICAL CHARACTERISTICS

temperature range. V

SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS

V

OS

∆V
∆Temp N8 Package

I

OS

I

B

A

VOL

CMRR Common Mode Rejection Ratio VCM = 0V to 3.4V ● 96 109 92 108 dB

PSRR Power Supply Rejection Ratio VS = ±2V to ±18V, VO = 0V ● 101 120 97 118 dB

I

S

Input Offset Voltage J8/H Package ● 30 110 45 160 µV

Input Offset Voltage Drift J8/H Package ● 0.2 1.3 0.3 1.8 µV/°C

OS

Input Offset Current ● 0.25 1.2 0.3 2.5 nA
Input Bias Current ● 11 20 12 30 nA

Large-Signal Voltage Gain VO = 0.04V to 3.5V, RL = 2k ● 0.35 1.3 0.25 1.2 V/µV

Maximum Output Voltage Swing Output Low, 600Ω to GND ● 613 613mV

Supply Current ● 350 570 360 620 µA

= 5V, 0V; VCM = 0V; VO = 1.4V; 0°C ≤ TA ≤ 70°C, unless otherwise noted.

S

N8 Package
S8 Package

S8 Package

Output High, 600Ω to GND

The ● denotes the specifications which apply over the full operating

LT1006AC LT1006C

● 50 190 µV

● 110 560 µV

● 0.5 2.5 µV/°C

● 0.7 3.5 µV/°C

● 3.3 3.9 3.2 3.9 V

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

LT1006AM/AC LT1006M/C

SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS

V

OS

I

OS

I

B

CMRR Common Mode Rejection Ratio VCM = +13.5V, –15V 100 117 97 116 dB

PSRR Power Supply Rejection Ratio VS = ±2V to ±18V, VO = 0V 106 126 103 124 dB

A

VOL

V

OUT

SR Slew Rate R

I

S

Input Offset Voltage 30 100 50 180 µV

LT1006S8 100 525 µV

Input Offset Current 0.1 0.5 0.15 0.9 nA

Input Bias Current 7.5 12.0 8 20 nA

Input Voltage Range 13.5 13.8 13.5 13.8 V

–15.0 –15.3 –15.0 –15.3 V

Large Signal Voltage Gain VO = ±10V, RL = 2k 1.5 5.0 1.2 4.0 V/µV

= ±10V, RL = 600Ω 0.8 1.5 0.5 1.0 V/µV

V

O

Maximum Output Voltage Swing RL = 2k ±13 ±14 ±12.5 ±14 V

= ∞ 0.25 0.4 0.25 0.4 V/µs

SET

R

= 390Ω Pin 8 to Pin 4 1.0 1.2 1.0 1.2 V/µs

SET

Supply Current 360 540 360 600 µA

4

1006fa

LT1006

ELECTRICAL CHARACTERISTICS

temperature range. V

SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS

V

OS

∆V
∆Temp

I

OS

I

B

A

VOL

CMRR Common Mode Rejection Ratio VCM = +13V, –14.9V ● 97 114 94 113 dB

PSRR Power Supply Rejection Ratio VS = ±2V to ±18V, VO = 0V ● 100 117 97 116 dB

I

S

Input Offset Voltage ● 80 320 110 460 µV
Input Offset Voltage Drift ● 0.5 2.2 0.6 2.8 µV/°C

OS

Input Offset Current ● 0.2 2.0 0.3 3.0 nA
Input Bias Current ● 918 1127nA

Large-Signal Voltage Gain VO = ±10V, RL = 2k ● 0.5 1.5 0.25 1.0 V/µV

Maximum Output Voltage Swing RL = 2k ● ±12 ±13.8 ±11.5 ±13.8 V
Supply Current ● 400 650 400 750 µA

= ±15V, –55°C ≤ TA ≤ 125°C, unless otherwise noted.

S

The ● denotes the specifications which apply over the full operating

LT1006AM LT1006M

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

LT1006AC LT1006C

SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS

V

OS

∆V
∆Temp N8 Package

I

OS

I

B

A

VOL

CMRR Common Mode Rejection Ratio VCM = 13V, –15V ● 98 116 94 114 dB

PSRR Power Supply Rejection Ratio VS = ±2V to ±18V, VO = 0V ● 101 120 97 118 dB

I

S

Input Offset Voltage J8/H Package ● 50 200 75 300 µV

N8 Package
S8 Package

Input Offset Voltage Drift J8/H Package ● 0.5 2.2 0.6 2.8 µV/°C

OS

S8 Package

Input Offset Current ● 0.15 1 0.25 2 nA
Input Bias Current ● 815 1023nA

Large-Signal Voltage Gain VO = ±10V, RL = 2k ● 13 0.7 2.5 V/µV

Maximum Output Voltage Swing RL = 2k ● ±12.5 ±13.9 ±11.5 ±13.8 V
Supply Current ● 370 600 380 660 µA

● 80 330 µV

● 150 730 µV

● 0.7 3.5 µV/°C

● 1.0 4.5 µV/°C

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

Note 2: This parameter is guaranteed by design and is not tested.
Note 3: Regular operation does not require an external resistor. In order

to program the supply current for low power or high speed operation,
connect an external resistor from Pin 8 to Pin 7 or from Pin 8 to Pin 4,
respectively. Supply current specifications (for R
current in R

SET

.

= 180k) do not include

SET

Note 4: Optional offset nulling is accomplished with a potentiometer
connected between the trim terminals and the wiper to V
(providing a null range of ±6mV) is recommended for minimum drift of
nulled offset voltage with temperature. For increased trim resolution and
accuracy, two fixed resistors can be used in conjunction with a smaller
potentiometer. For example, two 4.7k resistors tied to Pins 1 and 5, with a
500Ω pot in the middle, will have a null range of ±150µV.

–

. A 10k pot

1006fa

5

LT1006

UW

TYPICAL PERFOR A CE CHARACTERISTICS

Offset Voltage Drift with Temperature
of Representative Units

150

VS = 5V, 0V

120

–30

–60

OFFSET VOLTAGE (µV)

–90

–120

–150

= 0.1V

V

CM

90

60

30

0

50

–50

–25

25

0

TEMPERATURE (°C)

75

100

Warm-Up Drift

2.0
VS = 5V, 0V

T

= 25°C

A

1.5

1.0

0.5

CHANGE IN OFFSET VOLTAGE (µV)

0

LT1006 METAL CAN (H) PACKAGE
LT1006 CERDIP (J) PACKAGE

0

1

TIME AFTER POWER ON (MIN)

2

3

LT1006 • G02

LT1006 • G05

125

4

Offset Voltage vs Balanced Source
Resistor

INPUT OFFSET VOLTAGE (µV)

1.0

0.1

0.01

10

1k

VS = 5V, 0V, –55°C TO 125°C

R

S

–

R

S

+

VS = ±15V,

–55°C TO 125°C

VS = ±15V, 25°C

VS = 5V, 0V, 25°C

30k 100k3k 10k 300k 1M 3M 10M

BALANCED SOURCE RESISTANCE, RS (Ω)

Voltage Gain vs Load Resistance,
VS = 5V, 0V

10M

TA = –55°C

TA = 25°C

1M

TA = 125°C

VOLTAGE GAIN (V/V)

100k

100

LOAD RESISTANCE TO GROUND (Ω)

1k 10k

LT1006 • G03

LT1006 • G06

VOS vs Common Mode Voltage
vs Temperature

500

400

300

200

T =

125°C

1

T =

25°C

2

T =

125°C

1
2

OFFSET VOLTAGE (µV)

–100

–200

–300

100

0

–0.4

COMMON MODE INPUT VOLTAGE (V)

1

0 0.4 0.8 1.4

Voltage Gain vs Load Resistance
with VS = ±15V

10M

TA = 25°C

1M

VOLTAGE GAIN (V/V)

100k

100

LOAD RESISTANCE TO GROUND (Ω)

1k 10k

VS = 5V, 0V

T =

2

POSITIVE V
NEGATIVE V

1.0

LT1006 • G04

TA = –55°C

TA = 125°C

LT1006 • G07

25°C

OS

OS

Input Bias Current vs Temperature

18

VCM = 0V

15

12

9

6

INPUT BIAS CURRENT (nA)

3

0

–50

VS = 5V, 0V

–25 0

VS = ±15V

50 100 125

25 75

TEMPERATURE (˚C)

6

LT1006 • G08

Input Offset Current
vs Temperature

0.5

0.4

0.3

0.2

0.1

INPUT OFFSET CURRENT (nA)

0

–50

–25

VCM = 0V

VS = 5V, 0V

25

0

TEMPERATURE (°C)

VS = ±15V

50

75

100

LT1006 • G09

Input Bias Current
vs Common Mode Voltage

5

4

= 5V, 0V (V)

S

3

2

1

0

VS = ±15V,

–1

COMMON MODE INPUT VOLTAGE, V

125

0

VS = 5V, 0V, T = 125°C

T = 25°C

–6 –12

INPUT BIAS CURRENT (nA)

VS = 5V, 0V, T = 25°C

–18

LT1006 • G10

COMMON MODE INPUT VOLTAGE, V

15

10

5

0

–5

S

= 15V (V)

–10

–15

–24

1006fa

UW

FREQUENCY (Hz)

10

0

COMMON MODE REJECTION RATIO (dB)

20

40

60

80

100

120

100 1k 10k 100k

LT1006 • G19

1M

TA = 25°C

VS = 5V, 0V VS = ±15V

TYPICAL PERFOR A CE CHARACTERISTICS

10Hz Voltage Noise Distribution 0.1Hz to 10Hz NoiseNoise Spectrum

VOLTAGE NOISE DENSITY (nV/√Hz)

1000

300

100

30

CURRENT NOISE DENSITY (fA/√Hz)

10

TA = 25°C
V

= ±2V TO ±18V

S

VOLTAGE NOISE

1/f CORNER 2Hz

1

CURRENT NOISE

10 100 1k

FREQUENCY (Hz)

100

80

60

40

NUMBER OF UNITS

20

0

16

20

VOLTAGE NOISE DENSITY (nV/√Hz)

VS = ±2.5V
T

= 25°C

A

200 UNITS TESTED
FROM THREE RUNS

24

28

32

LT1006 • G11

LT1006 • G12

VS = ±2V TO ±15V

= 25°C

T

A

NOISE VOLTAGE (100nV/DIV)

0

246

TIME (SEC)

LT1006

810

LT1006 • G13

Supply Current vs Temperature Increasing Slew Rate (R

500

450

400

350

SUPPLY CURRENT (µA)

300

250

–50

–25

VS = ±15V

VS = 5V, 0V

50

25

0

TEMPERATURE (°C)

75

Output Saturation vs Sink Current
vs Temperature

10

V+ = 5V TO 30V

–

= 0V

V

I

= 10mA

1.0

SINK

I

SINK

= 5mA

100

LT1006 • G14

125

1000

VS = 5V, 0V

SR

ISY*

100

SUPPLY CURRENT (µA)

PIN 8 IS APPROXIMATELY
60mV ABOVE THE NEGATIVE SUPPLY

10

50

CURRENT INJECTED INTO PIN 8 (µA)

DOES NOT INCLUDE CURRENT THROUGH R

*I

SY

5 0.510 1

Maximum Output Swing
vs Load Resistor

5

VS = 5V, 0V

4

3

TA = 125°C

TA = –55°C

LT1006 • G15

TA = 25°C

1

0.1

0.01

SET

10

SLEW RATE (V/µs)

1

SLEW RATE (V/µs)

PIN 8 IS APPROXIMATELY
60mV ABOVE THE NEGATIVE SUPPLY

0.1
100

SR

R

, PIN 8 TO PIN 4 (Ω)

SET

Common Mode Rejection Ratio
vs Frequency

to V–)Reducing Power Dissipation

SET

VS = ±15V

= 5V, 0V

OR V

S

I

SY

1k 10k

LT1006 • G16

10

SUPPLY CURRENT (mA)

1

0.1

0.1

SATURATION VOLTAGE (V)

0.01
–50 –25

0255075100 125

TEMPERATURE (°C)

I

SINK

I

SINK

I

SINK

I

SINK

= 1mA

= 100µA
= 10µA

= 0

LT1006 • G17

2

1

MAXIMUM OUTPUT VOLTAGE (V)

0

0.01

0.1 1 10

LOAD RESISTOR (kΩ)

LT1006 • G18

1006fa

7

LT1006

UW

TYPICAL PERFOR A CE CHARACTERISTICS

Voltage Gain vs Frequency

140

120

100

80

60

40

VOLTAGE GAIN (dB)

20

0

–20

0.01

10.1 10 1k 100k 10M

VS = 5V, 0V VS = ±15V

100

FREQUENCY (Hz)

10k

TA = 25°C
C

= 10pF

L

1M

LT1006 • G20

20

10

GAIN

0

VOLTAGE GAIN (dB)

–10

5V, 0V 5V, 0V

0.1

0.3 3

TA = 25°C
V

= 0V

CM

C

= 10pF

PHASE

±15V

110

FREQUENCY (MHz)

L

±15V

LT1006 • G21

80

100

120

140

160

180

200

120

100

80

60

40

PHASE SHIFT (DEGREES)

20

POWER SUPPLY REJECTION RATIO (dB)

Power Supply Rejection Ratio
vs FrequencyGain, Phase vs Frequency

NEGATIVE

SUPPLY

VS = ±15V + 1Vp-p SINE WAVE

= 25°C

T

A

0

0.1

110

1k 100k 1M

100 10k

FREQUENCY (Hz)

POSITIVE
SUPPLY

LT1006 • G22

Large Transient Response,
VS = 5V, 0V

4V

2V

0V

AV = 1

= 4.7k TO 5V

R

L

INPUT = 0V TO 3.8V

10µs/DIV

Small-Signal Transient Response,
VS = 5V, 0V

100mV

1006 G23

Large-Signal Transient Response,
VS = 5V, 0V

4V

2V

0V

AV = 1

= 4.7k TO GROUND

R

L

INPUT = 0V TO 3.8V

10µs/DIV

20mV/DIV

Large-Signal Transient Response,
VS = ±15V

5V/DIV

1006 G24

AV = 1

50µs/DIV

Small-Signal Transient Response,
VCC = ±2.5V to ±15V

1006 G25

8

0V

AV = 1
C

= 10pF

L

= 600Ω TO GND

R

L

INPUT = 0V TO 100mV PULSE

20µs/DIV 1006 G26

AV = 1
C

= 10pF

L

2µs/DIV

1006 G27

1006fa

WUUU

APPLICATIO S I FOR ATIO

LT1006

The LT1006 is fully specified for single supply operation,
(i.e., when the negative supply is 0V). Input common
mode range includes ground; the output swings within a
few millivolts of ground. Single supply operation, how­ever, can create special difficulties, both at the input and
at the output. The LT1006 has specific circuitry which
addresses these problems.

At the input, the driving signal can fall below 0V—
inadvertently or on a transient basis. If the input is more
than a few hundred millivolts below ground, two distinct
problems can occur on previous single supply designs,
such as the LM124, LM158, OP-20, OP-21, OP-220,
OP-221, OP-420:

a) When the input is more than a diode drop below ground,
unlimited current will flow from the substrate (V– termi­nal) to the input. This can destroy the unit. On the LT1006,
the 400Ω resistors, in series with the input (see Schematic
Diagram), protect the devices even when the input is 5V
below ground.

b) When the input is more than 400mV below ground
(at 25°C), the input stage saturates (transistors Q3 and

Q4) and phase reversal occurs at the output. This can
cause lock-up in servo systems. Due to a unique phase
reversal protection circuitry (Q21, Q22, Q27, Q28), the
LT1006’s output does not reverse, as illustrated below,
even when the inputs are at –1.5V.

At the output, the aforementioned single supply designs
either cannot swing to within 600mV of ground (OP-20)
or cannot sink more than a few microamperes while
swinging to ground (LM124, LM158). The LT1006’s
all-NPN output stage maintains its low output resistance
and high gain characteristics until the output is saturated.

In dual supply operations, the output stage is crossover
distortion free.

Since the output cannot go exactly to ground, but can only
approach ground to within a few millivolts, care should be
exercised to ensure that the output is not saturated. For
example, a 1mV input signal will cause the amplifier to set
up in its linear region in the gain 100 configuration shown
below, but is not enough to make the amplifier function
properly in the voltage follower mode.

Voltage Follower with Input Exceeding the Negative Common Mode Range (VS = 5V, 0V)

4V

2V

0V

INPUT, –1.5V TO 4.5V 1006 TA11a

6V

P-P

R

1mV

–

+

5V

99R

LT1006

600Ω

100mV

LT1006 • TA02

4V

2V

0V

LM324, LM358, OP-20, OP-21

EXHIBIT OUTPUT PHASE

REVERSAL

1006 TA11b

1mV

4V

2V

0V

LT1006

NO PHASE REVERSAL

Voltage FollowerGain 100 Amplifier

5V

–

+

LT1006

600Ω

OUTPUT
SATURATED
≈ 5mV

LT1006 • TA03

1006 TA11c

1006fa

9

LT1006

WUUU

APPLICATIO S I FOR ATIO

In automated production testing the output is forced to

1.4V by the test loop; offset voltage is measured with a
common mode voltage of zero and the negative supply at
zero (Pin 4). Without the test loop, these exact conditions
cannot be achieved. The test circuit shown ensures that
the output will never saturate even with worst-case offset
voltages (–250µV over the –55°C to 125°C range). The
effective common mode input is 0.3V with respect to the
negative supply. As indicated by the common mode rejec­tion specifications the difference is only a few microvolts
between the two methods of offset voltage measurement.

Test Circuit for Offset Voltage and
Offset Drift with Temperature

50k*

4.7V

–

LT1006 • TA04

V

0

100Ω

50k*

LT1006

+

–0.3V

***RESISTORS MUST HAVE LOW

THERMOELECTRIC POTENTIAL.
THIS CIRCUIT IS ALSO USED AS
THE BURN-IN CONFIGURATION,
WITH SUPPLY VOLTAGES
INCREASED TO ± 20V

= 1000V

V

O

OS

Low Supply Operation

The minimum guaranteed supply voltage for proper
operation of the LT1006 is 2.7V. Typical supply current at
this voltage is 320µA; therefore, power dissipation is only
860µW.

Noise Testing

For application information on noise testing and
calculations, please see the LT1007 or LT1028 data sheet.

Supply Current Programming

Connecting an optional external resistor to Pin 8 changes
the biasing of the LT1006 in order to increase its speed or
to decrease its power consumption. If a higher slew rate is
required, connect the external resistor for Pin 8 to Pin 4
[see performance curves for Increasing Slew Rate
(R

to V–)]. For lower power consumption, inject a

SET

current into Pin 8 (which is approximately 60mV above
V–) as shown on the Reducing Power Dissipation plot.
This can be accomplished by connecting R

SET

to the
positive supply, or to save additional power, by obtaining
the injected current from a low voltage battery.

Comparator Applications

The single supply operation of the LT1006 and its ability to
swing close to ground while sinking current lends itself
to use as a precision comparator with TTL compatible
output.

OUTPUT (V)

INPUT (mV)

10

Comparator Rise Response Time

to 10mV, 5mV, 2mV Overdrives

4

2

0

0

–100

= 5V, 0V 50µs/DIV 1006 TA12a

V

S

OUTPUT (V)

INPUT (mV)

Comparator Fall Response Time

to 10mV, 5mV, 2mV Overdrives

4

2

0

0

–100

0

= 5V, 0V 50µs/DIV 1006 TA12b

V

S

1006fa

TYPICAL APPLICATIO S

U

LT1006

I

50k
5°C

TRIM

Platinum RTD Signal Conditioner

with Curvature Correction

+V

V = 5.6V TO 10V

39k

LM334

1.21k*

= 100µA

K

10k*

1k**

1N457

1k**

1k @

0°C

R

P

43.2k**

12k*

1k**

–

+

1µF

= ROSEMOUNT 118MF

R

P

** = TRW MAR-6 0.1%

* = 1% METAL FILM

1µF

7

LT1006

1.21M*

400°C

TRIM

+V

4

5k

180k

8

0.02V TO 4V OUT =
2°C TO 400°C
±0.25°C

LT1006 • TA05

Voltage Controlled Current Source

with Ground Referred Input and Output

5V

3

INPUT

0V TO 2V

1k

1µF

7

+

LT1006

2

–

8 7

14 13

1/2 LTC1043

17 16

OPERATES FROM A SINGLE 5V SUPPLY

4

0.68µF

5V

4

11

12

0.001µF

1µF

6

100Ω

=

I

OUT

LT1006 • TA06

V

IN

100Ω

3.1k*

200k*

INPUT

0V TO 5V

*= 1% METAL FILM
** = 1% METAL FILM, SELECTED

= 2N3904

= 74C14

120k**

TYP

20k
1MHz
TRIM

2µF

100Hz

TRIM

220k** TYP

2k

Q5

Q6

+

A1

LT1006

–

0.33µF

Micropower 1MHz V/F Converter

9V

LM334

2k*

VOLTAGE

9V

470k

7

8

47k

4

0.01µF

CONTROLLED

CURRENT

SOURCE

12k

Q8
2N3906

1000pF

(POLYSTYRENE)

CHARGE PUMP

3pF 1N4148

TRIGGER

STRAY
CAPACI­TANCE

Q1

NC

Q7

+

10µF

112

74C90

1414

REFERENCE
SWITCH

11

14

÷100

112

74C90

Q2

Q3

REFERENCE

11

Q4

LT1004-2.5

LT1004-1.2

OUTPUT
0MHz TO 1MHz

0.12% LINEARITY
280µA QUIESCENT CURRENT
680µA AT 1MHz

LT1006 • TA07

1006fa

11

LT1006

TYPICAL APPLICATIO S

Micropower Thermocouple Signal Conditioner with Cold Junction Compensation

100k

U

4.5V

(3AA CELLS)

R4

233k*

LT1004

1.235V

CATALYST

RESEARCH CORP

MODEL 2736

5V

10k
5%

3.2k

6250Ω

2.8V

TYPE J THERMOCOUPLE

1k

16.2k

0°C

T1

LT1034

1.2V

107k

R1
1684*

R2
186*

R3
R

T

1.8k*

Linear Thermometer

4

1/2 LTC1043

7 8

11

1µF

12

13

+

LT1006

–

14

56k

7

8

4

5.98k*

1µF

0V TO 3V OUT =
0°C TO 60°C
±0.75°C

5.76M*

TOTAL POWER CONSUMPTION ≤ 500µW

* = TRW MAR-6 0.1%

= YELLOW SPRINGS INST. CO

R

T

MODEL 44007 5k AT 25°C

5V

3

7

2

+

LT1006

–

6

4

51.1k

500Ω
100°C

100k

LT1006 • TA08

0V TO 1.000V =
0°C TO 100.0°C ±0.25°C

12

0.001µF

1716

T1 = YELLOW SPRINGS #44201
ALL RESISTORS = TRW MAR-6 0.1% UNLESS NOTED

LT1006 • TA09

1006fa

TYPICAL APPLICATIO S

U

±5V Precision Instrumentation Amplifier

5V

LT1006

DIFFERENTIAL

INPUT

0.01µF

–5V

W

W

SCHE ATIC DIAGRA

4

+

7 8

11

C1
1µF
(EXTERNAL)

12

13

16

1/2 LTC1043

17

5V

3

8

+

LT1006

2

–

C2
1µF

14

CMRR > 120dB AT DC
CMRR > 120dB AT 60Hz
DUAL SUPPLY OR SINGLE 5V
GAIN = 1 + R2/R1

≈ 150µV

V

OS

∆V

OS

≈ 2µV/°C

∆T

COMMON MODE INPUT VOLTAGE INCLUDES THE SUPPLIES

1

4

–5V
1µF

R2R1

V

OUT

LT1006 • TA10

V

+IN

–IN

V

+

7

9k 9k 1.6k

Q6

Q22

3

400Ω

2

400Ω

–

4

Q2

Q5 Q13

Q27

Q21

Q1

Q12

75pF

Q28

Q11

Q9

1

TRIM

1.6k 1.6k

Q16 Q14

Q3

Q7

Q4

Q29

Q8

2.7k2k2.7k

5

TRIM

100Ω

Q15 Q32

21pF

3.9k

2.5pF

Q18

Q10

15pF

Q17

2k 2k 1.3k

1k 600Ω

Q30

Q19

Q20

Q25

2.4k 18Ω

4pF

2k

100pF

Q23

Q33

Q26

OUTPUT

Q31

Q34

Q24

2k 30Ω

Q38

Q35

6

Q37

J1

Q39 Q40

28k

Q42

84k 2.5k5.4k

Q44

LT1006 • SD01

Q36

Q41

Q43

–

V

8

1006fa

13

LT1006

PACKAGE DESCRIPTIO

U

H Package

8-Lead TO-5 Metal Can (.200 Inch PCD)

(Reference LTC DWG # 05-08-1320)

.335 – .370

(8.509 – 9.398)

DIA

.305 – .335

(7.747 – 8.509)

.016 – .021**

(0.406 – 0.533)

.027 – .045

(0.686 – 1.143)

PIN 1

SEATING

PLANE

45°TYP

.010 – .045*

(0.254 – 1.143)

.028 – .034

(0.711 – 0.864)

.040

(1.016)

MAX

.050

(1.270)

MAX

GAUGE
PLANE

.200

(5.080)

TYP

.165 – .185

(4.191 – 4.699)

.500 – .750

(12.700 – 19.050)

REFERENCE
PLANE

.110 – .160

(2.794 – 4.064)

INSULATING

STANDOFF

*

LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE
AND THE SEATING PLANE

**

FOR SOLDER DIP LEAD FINISH, LEAD DIAMETER IS

8-Lead CERDIP (Narrow .300 Inch, Hermetic)

(Reference LTC DWG # 05-08-1110)

CORNER LEADS OPTION

(4 PLCS)

.023 – .045

(0.584 – 1.143)

HALF LEAD

.045 – .068

(1.143 – 1.650)

FULL LEAD

OPTION

.300 BSC

(7.62 BSC)

.008 – .018

(0.203 – 0.457)

NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE
OR TIN PLATE LEADS

OPTION

0° – 15°

J8 Package

.005

(0.127)

MIN

.025

(0.635)

RAD TYP

.045 – .065

(1.143 – 1.651)

.014 – .026

(0.360 – 0.660)

.016 – .024

(0.406 – 0.610)

.405

(10.287)

MAX

87

12

H8(TO-5) 0.200 PCD 0801

65

3

4

.220 – .310

(5.588 – 7.874)

.015 – .060

(0.381 – 1.524)

.100

(2.54)

BSC

.200

(5.080)

MAX

.125

3.175
MIN

J8 0801

14

OBSOLETE PACKAGES

1006fa

PACKAGE DESCRIPTIO

U

N8 Package

8-Lead PDIP (Narrow .300 Inch)

(Reference LTC DWG # 05-08-1510)

.255 ± .015*

(6.477 ± 0.381)

.400*

(10.160)

MAX

87 6

LT1006

5

12

.300 – .325

(7.620 – 8.255)

.065

(1.651)

.008 – .015

(0.203 – 0.381)

+.035

.325

–.015

+0.889

8.255

()

–0.381

NOTE:

1. DIMENSIONS ARE

*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm)

INCHES

MILLIMETERS

TYP

.045 – .065

(1.143 – 1.651)

.100

(2.54)

BSC

3

4

.130 ± .005

(3.302 ± 0.127)

.120

(3.048)

MIN

.018 ± .003

(0.457 ± 0.076)

.020

(0.508)

MIN

N8 1002

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

1006fa

15

LT1006

PACKAGE DESCRIPTIO

.050 BSC

N

U

S8 Package

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

(Reference LTC DWG # 05-08-1610)

.189 – .197

.045 ±.005

(4.801 – 5.004)

8

NOTE 3

7

5

6

.245
MIN

123 N/2

.030 ±.005

TYP

RECOMMENDED SOLDER PAD LAYOUT

.010 – .020

(0.254 – 0.508)

.008 – .010

(0.203 – 0.254)

NOTE:

1. DIMENSIONS IN

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)

×

°

45

.016 – .050

(0.406 – 1.270)

INCHES

(MILLIMETERS)

.160

0°– 8° TYP

±.005

.228 – .244

(5.791 – 6.197)

.053 – .069

(1.346 – 1.752)

.014 – .019

(0.355 – 0.483)

TYP

N

.150 – .157

(3.810 – 3.988)

N/2

1

3

2

NOTE 3

4

.004 – .010

(0.101 – 0.254)

.050

(1.270)

BSC

SO8 0502

16

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

[phone] ● FAX: [phone]

●

www.linear.com

1006fa

LT/TP 1102 1K REV A • PRINTED IN USA

 LINE AR TE CHNO LOGY CORPO R ATION 1988