Datasheet LT1078CN8PBF Specification

LT1078/LT1079

Micropower, Dual and

Quad, Single Supply, Precision Op Amps

FEATURES

■

Available in 8-Pin SO Package

■

50μA Max Supply Current per Amplifier

■

70μV Max Offset Voltage

■

180μV Max Offset Voltage in 8-Pin SO

■

250pA Max Offset Current

■

0.6μV

■

3pA

■

0.4μV/°C Offset Voltage Drift

■

200kHz Gain Bandwidth Product

■

0.07V/μs Slew Rate

■

Single Supply Operation

, 0.1Hz to 10Hz Voltage Noise

P-P

, 0.1Hz to 10Hz Current Noise

P-P

Input Voltage Range Includes Ground
Output Swings to Ground while Sinking Current
No Pull-Down Resistors Needed

■

Output Sources and Sinks 5mA Load Current

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APPLICATIO S

■

Battery or Solar-Powered Systems

Portable Instrumentation
Remote Sensor Amplifier
Satellite Circuitry

■

Micropower Sample-and-Hold

■

Thermocouple Amplifier

■

Micropower Filters

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

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DESCRIPTIO

®

The LT
packages including the small outline surface mount pack­age. The LT1079 is a micropower quad op amp offered in
the standard 14-pin packages. Both devices are optimized
for single supply operation at 5V. ±15V specifications are
also provided.

Micropower performance of competing devices is achieved
at the expense of seriously degrading precision, noise,
speed and output drive specifications. The design effort of
the LT1078/LT1079 was concentrated on reducing sup­ply current without sacrificing other parameters. The
offset voltage achieved is the lowest on any dual or quad
nonchopper stabilized op amp—micropower or other­wise. Offset current, voltage and current noise, slew rate
and gain bandwidth product are all two to ten times better
than on previous micropower op amps.

The 1/f corner of the voltage noise spectrum is at 0.7Hz,
at least three times lower than on any monolithic op amp.
This results in low frequency (0.1Hz to 10Hz) noise
performance which can only be found on devices with an
order of magnitude higher supply current.

Both the LT1078 and LT1079 can be operated from a
single supply (as low as one lithium cell or two Ni-Cad
batteries). The input range goes below ground. The all­NPN output stage swings to within a few millivolts of
ground while sinking current—no power consuming pull
down resistors are needed.

1078 is a micropower dual op amp in 8-pin

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TYPICAL APPLICATIO

Single Battery, Micropower, Gain = 100, Instrumentation Amplifier

10.1k 1M

10.1k

3V (LITHIUM CELL)

8

–

6

B

7

1/2 LT1078

+

5

4

+

OUTPUT NOISE = 85μV

INPUT RANGE = 0.03V TO 1.8V
OUTPUT RANGE = 0.03V TO 2.3V

OUTPUTS SINK CURRENT—NO PULL-DOWN RESISTORS
ARE NEEDED

OUT

LT1078/79 • TA01

P-P

= 300μV

RMS

(0.3mV ≤ V

0.1Hz TO 10Hz
OVER FULL BANDWIDTH

+

IN

1M

INVERTING

INPUT

TYPICAL PERFORMANCE

INPUT OFFSET VOLTAGE = 40μV
INPUT OFFSET CURRENT = 0.2nA
TOTAL POWER DISSIPATION = 240μW
COMMON MODE REJECTION = 110dB (AMPLIFIER LIMITED)
GAIN BANDWIDTH PRODUCT = 200kHz

2

3

–

–

A

1/2 LT1078

+

1

NONINVERTING

INPUT

– V

–

≤ 23mV)

IN

Distribution of Input Offset Voltage

(LT1078 and LT1079 in H, J, N Packages)

16

VS = 5V, 0V

= 25°C

T

14

A

12

10

8

6

PERCENT OF UNITS

4

2

0

–80 –40 40

–120

INPUT OFFSET VOLTAGE (μV)

0

80

120

1078/79 • TA02

10789fe

1

LT1078/LT1079

1

2

3

4

8

7

6

5

TOP VIEW

–IN A

OUT A

V

+

OUT B

+IN A

V

–

+IN B

–IN B

S8 PACKAGE

8-LEAD PLASTIC SO

B

A

NOTE: THIS PIN CONFIGURATION DIFFERS FROM THE
8-LEAD DIP PIN LOCATIONS. INSTEAD, IT FOLLOWS
THE INDUSTRY STANDARD LT1013DS8 SO PACKAGE
CONFIGURATION. FOR SIMILAR PERFORMANCE WITH
TRADITIONAL DIP PINOUT, SEE THE LT2078

WW

W

ABSOLUTE MAXIMUM RATINGS

U

(Note 1)

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

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

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

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

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

Storage Temperature Range

All Grades ......................................... –65°C to 150°C

U

W

U

PACKAGE/ORDER INFORMATION

TOP VIEW

+

V

8

OUT B

4

–

(CASE)

7

6

–IN B

5

+IN B

OUT A

1

AB

2

–IN A

3

+IN A

V

H PACKAGE

8-LEAD TO-5 METAL CAN

= 150°C, θJA = 150°C/ W, θJC = 45°C/ W

T

JMAX

ORDER PART NUMBER

LT1078ACH
LT1078MH

OBSOLETE PACKAGES

Consider the N8 and S8 Packages for Alternate Source

OUT A

–IN A

+IN A

V

T

JMAX

ORDER PART NUMBER

T

JMAX

TOP VIEW

1

2

A

3

–

4

N8 PACKAGE
8-LEAD PDIP

= 100°C, θJA = 130°C/ W (N8)

LT1078ACN8
LT1078CN8
LT1078IN8

J8 PACKAGE
8-LEAD PDIP

= 150°C, θJA = 100°C/ W (J8)

LT1078AMJ8
LT1078MJ8

Operating Temperature Range
LT1078AM/LT1078M/

LT1079AM/LT1079M (OBSOLETE) ..... –55°C to 125°C

LT1078I/LT1079I .................................... – 40°C to 85°C

LT1078AC/LT1078C/LT1078S8/

LT1079AC/LT1079C .................................... 0°C to 70°C

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

+

8

V

OUT B

7

–IN B

6

B

+IN B

5

T

= 110°C, θJA = 220°C/ W

JMAX

ORDER PART NUMBER

LT1078IS8
LT1078S8

PART MARKING

1078

TOP VIEW

1

OUT A

2

–IN A

+IN A

+IN B

–IN B

OUT B

T

JMAX

T

JMAX

2

A

3

+

4

V

5

6

7

14-LEAD PDIP

= 110°C, θJA = 130°C/ W (N)

14-LEAD CERAMIC DIP

= 150°C, θJA = 100°C/ W (J)

D

B

C

N PACKAGE

J PACKAGE

OBSOLETE PACKAGE

Consider the N Packages for Alternate Source

ORDER PART

14

OUT D

13

–IN D

12

+IN D

–

11

V

10

+IN C

9

–IN C

8

OUT C

NUMBER

LT1079ACN
LT1079CN
LT1079IN

OUT A

–IN A

+IN A

+IN B

–IN B

OUT B

NC

+

V

LT1079MJ

TOP VIEW

1

2

A

3

4

5

B

6

7

8

SW PACKAGE

16-LEAD PLASTIC SO WIDE

NOTE: FOR 14-PIN NARROW
PACKAGE SEE THE LT2079

T

= 110°C, θJA = 150°C/ W

JMAX

D

C

ORDER PART

16

OUT D

15

–IN D

14

+IN D

13

V–

12

+IN C

11

–IN C

10

OUT C

9

NC

NUMBER

LT1079ISW
LT1079SW

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LT1078/LT1079

ELECTRICAL CHARACTERISTICS

SYMBOL PARAMETER CONDITIONS (NOTE 2) MIN TYP MAX MIN TYP MAX UNITS

V

OS

ΔV
ΔTime Voltage Stability

I

OS

I

B

e

n

i

n

CMRR Common Mode Rejection Ratio VCM = 0V to 3.5V 97 110 94 108 dB

PSRR Power Supply Rejection Ratio VS = 2.3V to 12V 102 114 100 114 dB

A

VOL

SR Slew Rate AV = 1, VS = ± 2.5V 0.04 0.07 0.04 0.07 V/μs

GBW Gain Bandwidth Product fO ≤ 20kHz 200 200 kHz

I

S

Input Offset Voltage LT1078 30 70 40 120 μV

Long Term Input Offset 0.4 0.5 μV/Mo

OS

Input Offset Current 0.05 0.25 0.05 0.35 nA

Input Bias Current 6 8 6 10 nA
Input Noise Voltage 0.1Hz to 10Hz (Note 3) 0.6 1.2 0.6 μV

Input Noise Voltage Density fO = 10Hz (Note 3) 29 45 29 nV√Hz

Input Noise Current 0.1Hz to 10Hz (Note 3) 2.3 4.0 2.3 pA

Input Noise Current Density fO = 10Hz (Note 3) 0.06 0.10 0.06 pA√Hz

Input Resistance (Note 4)

Differential Mode 400 800 300 800 MΩ
Common Mode 6 6 GΩ

Input Voltage Range 3.5 3.8 3.5 3.8 V

Large-Signal Voltage Gain VO = 0.03V to 4V, No Load 200 1000 150 1000 V/mV

Maximum Output Voltage Output Low, No Load 3.5 6 3.5 6 mV
Swing Output Low, 2k to GND 0.55 1.0 0.55 1.0 mV

Supply Current per Amplifier 38 50 39 55 μA
Channel Separation ΔVIN = 3V, RL = 10k 130 130 dB

Minimum Supply Voltage (Note 5) 2.2 2.3 2.2 2.3 V

LT1078IS8/LT1078S8 60 180 μV
LT1079 35 100 40 150 μV
LT1079ISW/LT1079SW 60 300 μV

fO = 1000Hz (Note 3) 28 37 28 nV√Hz

fO = 1000Hz 0.02 0.02 pA√Hz

VO = 0.03V to 3.5V, RL = 50k 150 600 120 600 V/mV

Output Low, I
Output High, No Load 4.2 4.4 4.2 4.4 V

Output High, 2k to GND 3.5 3.9 3.5 3.9 V

SINK

VS = 5V, 0V, VCM = 0.1V, VO = 1.4V, TA = 25°C unless otherwise noted.

LT1078C/LT1079C

LT1078I/LT1079I
LT1078AC/LT1079AC LT1078M/LT1079M
LT1078AM/LT1079AM LT1078S8/LT1079SW

P-P

P-P

0 – 0.3 0 – 0.3 V

= 100μA 95 130 95 130 mV

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3

LT1078/LT1079

ELECTRICAL CHARACTERISTICS

The ● denotes the specifications which apply over the temperature range

–40°C ≤ TA ≤ 85°C for I grades, – 55°C ≤ TA ≤ 125°C for AM/M grades. VS = 5V, 0V, VCM = 0.1V, VO = 1.4V unless otherwise noted.

SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS

V

OS

ΔV
ΔT (Note 6) LT1078IS8

I

OS

I

B

CMRR Common Mode Rejection Ratio VCM = 0.05V to 3.2V ● 92 106 88 104 dB

PSRR Power Supply Rejection Ratio VS = 3.1V to 12V ● 98 110 94 110 dB

A

VOL

I

S

Input Offset Voltage LT1078 ● 70 250 95 370 μV

LT1078IS8/LT1079 ● 80 280 100 400 μV
LT1079ISW ● 100 560 μV

Input Offset Voltage Drift ● 0.4 1.8 0.5 2.5 μV/°C

OS

LT1079ISW ● 0.7 4.0 μV/°C

Input Offset Current ● 0.07 0.50 0.07 0.70 nA

Input Bias Current ● 710 712 nA

Large-Signal Voltage Gain VO = 0.05V to 4V, No Load ● 110 600 80 600 V/mV

Maximum Output Voltage Output Low, No Load
Swing Output Low, I

Supply Current per Amplifier ● 43 60 45 70 μA

LT1078I/LT1079I ● 0.1 1.0 nA

VO = 0.05V to 3.5V, RL = 50k ● 80 400 60 400 V/mV

= 100μA ● 125 170 125 170 mV

SINK

Output High, No Load
Output High, 2k to GND ● 3.0 3.7 3.0 3.7 V

LT1078AM/LT1079AM LT1078M/LT1079M

● 0.6 3.5 μV/°C

● 4.5 8 4.5 8 mV

● 3.9 4.2 3.9 4.2 V

LT1078I/LT1079I

The ● denotes the specifications which apply over the temperature range 0°C ≤ TA ≤ 70°C. VS = 5V, 0V, VCM = 0.1V, VO = 1.4V
unless otherwise noted.

LT1078AC/LT1079AC LT1078S8/LT1079SW

SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS

V

OS

ΔV
ΔT (Note 6) LT1078S8

I

OS

I

B

CMRR Common Mode Rejection Ratio VCM = 0V to 3.4V ● 94 108 90 106 dB

PSRR Power Supply Rejection Ratio VS = 2.6V to 12V ● 100 112 97 112 dB

A

VOL

I

S

Input Offset Voltage LT1078 ● 50 150 60 240 μV

Input Offset Voltage Drift ● 0.4 1.8 0.5 2.5 μV/°C

OS

Input Offset Current ● 0.06 0.35 0.06 0.50 nA

Input Bias Current ● 69 611nA

Large-Signal Voltage Gain VO = 0.05V to 4V, No Load ● 150 750 110 750 V/mV

Maximum Output Voltage Output Low, No Load
Swing Output Low, I

Supply Current per Amplifier ● 40 55 42 63 μA

LT1079
LT1078S8
LT1079SW ● 90 480 μV

LT1079SW ● 0.7 4.0 μV/°C

VO = 0.05V to 3.5V, RL = 50k ● 110 500 80 500 V/mV

= 100μA ● 105 150 105 150 mV

SINK

Output High, No Load
Output High, 2k to GND ● 3.3 3.8 3.3 3.8 V

● 60 180 70 270 μV

● 85 350 μV

● 0.6 3.5 μV/°C

● 4.0 7 4.0 7 mV

● 4.1 4.3 4.1 4.3 V

LT1078C/LT1079C

4

10789fe

LT1078/LT1079

ELECTRICAL CHARACTERISTICS

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 100 114 97 114 dB

PSRR Power Supply Rejection Ratio VS = 5V, 0V to ±18V 102 114 100 114 dB

A

VOL

V

OUT

SR Slew Rate 0.06 0.10 0.06 0.10 V/μs

I

S

Input Offset Voltage (Including LT1078IS8/LT1078S8) 50 250 70 350 μV

LT1079ISW/LT1079SW 80 500 μV

Input Offset Current 0.05 0.25 0.05 0.35 nA

Input Bias Current 6 8 6 10 nA

Input Voltage Range 13.5 13.8 13.5 13.8 V

Large-Signal Voltage Gain VO = ±10V, RL = 50k 1000 5000 1000 5000 V/mV

VO = ±10V, RL = 2k 400 1100 300 1100 V/mV

Maximum Output Voltage RL = 50k ±13.0 ± 14.0 ±13.0 ± 14.0 V
Swing RL = 2k ±11.0 ± 13.2 ±11.0 ± 13.2 V

Supply Current per Amplifier 46 65 47 75 μA

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

LT1078C/LT1079C

LT1078I/LT1079I

LT1078AC/LT1079AC LT1078M/LT1079M

LT1078AM/LT1079AM LT1078S8/LT1079SW

–15.0 –15.3 –15.0 –15.3 V

The ● denotes the specifications which apply over the temperature range – 40°C ≤ TA ≤ 85°C for I grades, – 55°C ≤ TA ≤ 125°C for
AM/M grades. VS = ± 15V unless otherwise noted.

SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS

V

OS

ΔV
ΔT (Note 6) LT1078IS8

I

OS

I

B

A

VOL

CMRR Common Mode Rejection Ratio VCM = 13V, –14.9V ● 94 110 90 110 dB

PSRR Power Supply Rejection Ratio VS = 5V, 0V to ± 18V ● 98 110 94 110 dB

I

S

Input Offset Voltage (Including LT1078IS8) ● 90 430 120 600 μV

LT1079ISW ● 130 825 μV

Input Offset Voltage Drift ● 0.5 1.8 0.6 2.5 μV/°C

OS

LT1079ISW ● 0.8 5.0 μV/°C

Input Offset Current ● 0.07 0.50 0.07 0.70 nA

LT1078I/LT1079I ● 0.1 1.0 nA

Input Bias Current ● 710 712 nA

Large-Signal Voltage Gain VO = ±10V, RL = 5k ● 200 700 150 700 V/mV

Maximum Output Voltage Swing RL = 5k ● ±11.0 ±13.5 ±11.0 ±13.5 V
Supply Current per Amplifier ● 52 80 54 95 μA

LT1078AM/LT1079AM LT1078M/LT1079M

● 0.7 3.8 μV/°C

LT1078I/LT1079I

10789fe

5

LT1078/LT1079

ELECTRICAL CHARACTERISTICS

The ● denotes the specifications which apply over the temperature range

0°C ≤ TA ≤ 70°C. VS = ± 15V unless otherwise noted.

LT1078C/LT1079C

SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS

V

OS

ΔV
ΔT (Note 6) LT1078S8

I

OS

I

B

A

VOL

CMRR Common Mode Rejection Ratio VCM = 13V, –15V ● 97 112 94 112 dB

PSRR Power Supply Rejection Ratio VS = 5V, 0V to ± 18V ● 100 112 97 112 dB

I

S

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

Note 2: Typical parameters are defined as the 60% yield of parameter
distributions of individual amplifiers, i.e., out of 100 LT1079s (or 100
LT1078s) typically 240 op amps (or 120) will be better than the indicated
specification.

Note 3: This parameter is tested on a sample basis only. All noise
parameters are tested with VS = ±2.5V, VO = 0V.

Input Offset Voltage ● 70 330 90 460 μV

Input Offset Voltage Drift ● 0.5 1.8 0.6 2.5 μV/°C

OS

Input Offset Current ● 0.06 0.35 0.06 0.50 nA

Input Bias Current ● 69 611 nA

Large-Signal Voltage Gain VO = ±10V, RL = 5k ● 300 1200 250 1200 V/mV

Maximum Output Voltage Swing RL = 5k ● ±11.0 ± 13.6 ±11.0 ± 13.6 V
Supply Current per Amplifier ● 49 73 50 85 μA

LT1078S8
LT1079SW ● 115 750 μV

LT1079SW ● 0.8 5.0 μV/°C

Note 4: This parameter is guaranteed by design and is not tested.
Note 5: Power supply rejection ratio is measured at the minimum supply

voltage. The op amps actually work at 1.8V supply but with a typical offset
skew of –300μV.

Note 6: This parameter is not 100% tested.

LT1078AC/LT1079AC LT1078S8/LT1079SW

● 100 540 μV

● 0.7 3.8 μV/°C

6

10789fe

W

U

TYPICAL PERFORMANCE CHARACTERISTICS

LT1078/LT1079

Input Bias and Offset Currents
vs TemperatureSupply Current vs Temperature

55

50

–25 0

VS = ±15V

VS = 5V, 0V

50 100 125

25 75

TEMPERATURE (°C)

LT1078/79 • TPC01

45

40

35

30

SUPPLY CURRENT PER AMPLIFIER (μA)

25

–50

100

VS = 5V, 0V TO ±15V

50

0

–5

–6

–7

BIAS CURRENT (nA) OFFSET CURRENT (pA)

–50

0

–25

TEMPERATURE (°C)

I

OS

I

B

50

25

75

100

LT1078/79 • TPC02

125

Input Bias Current
vs Common Mode Voltage

0

VS = 5V, 0V

–2

–4

–6

–8

INPUT BIAS CURRENT (nA)

–10

–12

–1

0.1Hz to 10Hz Noise 0.01Hz to 10Hz Noise Noise Spectrum

1000

300

100

30

CURRENT NOISE DENSITY (fA/√Hz)

VOLTAGE NOISE DENSITY (nV/√Hz)

10

0.1 1 100

NOISE VOLTAGE (0.4μV/DIV)

TA = 25°C
V

0

= ±2.5V

S

TA = 25°C

= ±2.5V

V

0.4μV

S

CHANNEL A

CHANNEL B

20

0

40

TIME (SEC)

60

80

100

LT1078/79 • TPC05

CHANNEL A

CHANNEL B

NOISE VOLTAGE (0.4μV/DIV)

2

4

TIME (SEC)

6

8

10

LT1078/79 • TPC04

TA = –55°C

TA = 25°C

TA = 125°C

0123

COMMON MODE VOLTAGE (V)

LT1078/79 • TPC03

TA = 25°C

= ±2.5V

V

S

= ±15V

(AT V

S

CURRENT
NOISE

VOLTAGE
NOISE

1/f CORNER

0.7Hz

FREQUENCY (Hz)

VOLTAGE NOISE

IS 4% LESS

CURRENT NOISE

IS UNCHANGED)

10 1000

LT1078/79 • TPC06

4

10Hz Voltage Noise Distribution

35

30

25

20

15

PERCENT OF UNITS

10

5

0

25

VOLTAGE NOISE DENSITY (nV/√Hz)

329 OP AMPS TESTED

FROM THREE RUNS

30

TA = 25°C

= ± 2.5V

V

S

106 LT1078'S

45 LT1079'S

35 40

LT1078/79 • TPC07

Distribution of Offset Voltage Drift
with Temperature (In All Packages
Except Surface Mount)

25

VS = 5V, 0V

= 0.1V

V

CM

120 LT1078'S

20

70 LT1079'S
520 OP AMPS

15

10

PERCENT OF UNITS

5

1111

0

–2 –1 0 1 2

OFFSET VOLTAGE DRIFT WITH TEMPERATURE (μV/°C)

120

109

89

85

44

7

5

3

47

4

3

LT1078/79 • TPC08

Long Term Stability of Two
Representative Units (LT1078)

15

TA = 25°C, VS = 5V, 0V

= 0.1V

V

CM

10

5

0

–5

OFFSET VOLTAGE CHANGE (μV)

–10

–15

0

1234

1A

2B

1B

2A

TIME (MONTHS)

5

LT078/79 • TPC09

10789fe

7

LT1078/LT1079

W

U

TYPICAL PERFORMANCE CHARACTERISTICS

Voltage Gain vs Frequency

140

120

100

80

60

40

VOLTAGE GAIN (dB)

20

0

–20

0.01

0.1

VS = ±15V

VS = 5V, 0V

1

10

FREQUENCY (Hz)

Slew Rate, Gain Bandwidth
Product and Phase Margin vs
Temperature

0.12

0.10

0.08

0.06

0.04

PRODUCT (kHz) SLEW RATE (V/μs)

GAIN BANDWIDTH

240

220

200

180

160

fO = 20kHz

–50

SLEW = ±15V

φM = 5V, 0V

0

–25

TEMPERATURE (°C)

GBW = ±15V

GBW = 5V, 0V

25

100

1k

SLEW = 5V, 0V

φM = ±15V

50

TA = 25°C

10k

LT1078/79 • TPC10

75

LT1078/79 • TPC13

100k

100

30

20

10

VOLTAGE GAIN (dB)

0

–10

1M

PHASE MARGIN (DEG)

80

70

60

50

40

125

Gain, Phase vs Frequency

PHASE

MARGIN

66°

5V, 0V

TA = 25°C
C

L

10

GAIN

= 20pF

30

FREQUENCY (kHz)

PHASE

MARGIN

54°

100

±15V

5V, 0V

±15V

300

LTC1078/79 TPC11

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

1V/DIV

AV = 1, NO LOAD 50μs/DIV
INPUT PULSE 0V TO 3.8V

100

120

140

160

180

200

1000

LT1078/79 • TPC27

Capacitive Load Handling

120

TA = 25°C
V

S

100

PHASE SHIFT (DEG)

80

60

OVERSHOOT (%)

40

20

0

10

Large-Signal Transient Response
VS = ± 15V

5V/DIV

0V

AV = 1 100μs/DIV
NO LOAD

= 5V, 0V

AV = 5

CAPACITIVE LOAD (pF)

AV = 1

1000100

AV = 10

10000

LT1078/79 • TPC12

0V

LT1078/79 • TPC28

8

Minimum Supply Voltage

100

–100

–200

–300

INPUT OFFSET VOLTAGE (μV)

–400

–500

V– = 0V
–0.1V ≤ V

0

NONFUNCTIONAL

0

≤ 0.4V

CM

125°C

1

POSITIVE SUPPLY VOLTAGE (V)

70°C

0°C

25°C

23

–55°C

LT1078/79 • TPC16

Warm-Up Drift

0.8
TA = 25°C
V

0.7

S

WARM UP DRIFT
AT V

0.6
IMMEASURABLY LOW

0.5

0.4

0.3

0.2

CHANGE IN OFFSET VOLTAGE (μV)

0.1

0

0

= ±15V

= 5V, 0V IS

S

LT1079

LT1078

12

TIME AFTER POWER-ON (MINUTES)

LT1078/79 • TPC17

10M

VOLTAGE GAIN (V/V)

100k

3

Voltage Gain vs Load Resistance

VS = ±15V

= 5V, 0V

V

S

125°C

1M

100

LOAD RESISTANCE TO GROUND (Ω)

10k 100k1k 1M

25°C

–55°C

–55°C

125°C

25°C

LT1078/79 • TPC18

10789fe

W

U

TYPICAL PERFORMANCE CHARACTERISTICS

LT1078/LT1079

Output Saturation vs Temperature
vs Sink Current

1000

100

10

SATURATION VOLTAGE (mV)

1

–25 125

–50

I

= 2mA

SINK

I

SINK

I

= 100μA

SINK

I

= 10μA

SINK

I

= 1μA

SINK

NO LOAD

RL = 5k TO GND

0 25 50 10075

TEMPERATURE (°C)

= 1mA

VS = 5V, 0V

LT1078/79 • TPC19

Common Mode Range
vs Temperature Closed Loop Output Impedance

+

V

V+ = 2.5V TO 18V

–

= 0V TO –18V

V

V+ – 1

+

V

– 2

–

V

+ 1

–

COMMON MODE RANGE (V)

V

–

V

– 1

–25 0 25 50 75

–50

TEMPERATURE (°C)

100

LT1078/79 • TPC22

125

Output Voltage Swing
vs Load Current

+

V

125°C

V+ – 1

+

– 2

V

–

V

+ 2

OUTPUT VOLTAGE SWING (V)

–

+ 1

V

–

V

0.01
SOURCING OR SINKING LOAD CURRENT (mA)

25°C

–55°C

0.1 1

Undistorted Output Swing
vs Frequency

30

= ±15V (V)

S

20

VS = 5V, 0V

≥ 1k

R

L

10

TA = 25°C

,

LOAD R

L

TO GND

PEAK-TO-PEAK OUTPUT SWING, V

0

0.01

VS = ±15V
R

110

FREQUENCY (kHz)

25°C

≥ 100k

L

VS = 5V, 0V
R

L

125°C

LT1078/79 • TPC20

≥ 100k

VS = ±15V

= 30k

R

L

LT1078/79 • TPC23

–55°C

Distribution of Input Offset Voltage
(LT1078 in 8-Pin SO Package)

16

TA = 25°C

14

= 5V, 0V

V

S

12

10

8

6

PERCENT OF UNITS

4

2

10

100

5

4

3

2

1

0

0
–160

–120

PEAK-TO-PEAK OUTPUT SWING, V

1k

100

10

S

1

= 5V, 0V (V)

OUTPUT IMPEDANCE (Ω)

0.1

10 100 1k 10k 100k

–80

INPUT OFFSET VOLTAGE (μV)

A

= 10

V

0

–40

AV = 100

FREQUENCY (Hz)

40

AV = 1

80

120

LT1078/79 • TPC21

LT1078/79 • TPC24

160

Common Mode Rejection Ratio
vs Frequency

120

100

VS = ±15V

80

60

40

20

COMMON MODE REJECTION RATIO (dB)

0

10

VS = 5V, 0V

100 1k 10k 100k

FREQUENCY (Hz)

TA = 25°C

LT1078/79 • TPC25

1M

Power Supply Rejection Ratio
vs Frequency

120

100

80

NEGATIVE

0.1

TA = 25°C
V

S

SUPPLY

= ±2.5V + 1V

110

FREQUENCY (Hz)

SINE WAVE

P-P

1k 100k 1M

100 10k

60

40

20

POWER SUPPLY REJECTION RATIO (dB)

0

POSITIVE
SUPPLY

LT1078/79 • TPC26

Channel Separation vs Frequency

140

120

100

80

60

40

TA = 25°C

CHANNEL SEPARATION (dB)

= ±2.5V

V

S

20

= 3V

IN

= 10k

L

10 100

TO 2kHz

P-P

FREQUENCY (Hz)

10k 1M

V
R

0

1 1k 100k

LT1078/79 • TPC27

10789fe

9

LT1078/LT1079

W

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TYPICAL PERFORMANCE CHARACTERISTICS

Small-Signal Transient Response
V

= 5V, 0V

S

20mV/DIV

AV = 1 10μs/DIV

= 15pF

C

L

INPUT 50mV TO 150mV

LT1078/79 • TPC24

0.1V

Small-Signal Transient Response
VS = ± 15V

20mV/DIV

Small-Signal Transient Response
V

= ± 2.5V

S

20mV/DIV

AV = 1 10μs/DIV

= 15pF

C

L

0V

LT1078/79 • TPC25

0V

AV = 1 10μs/DIV

= 15pF

C

L

U

WUU

APPLICATIONS INFORMATION

The LT1078/LT1079 devices are fully specified with
V+ = 5V, V– = 0V, VCM = 0.1V. This set of operating
conditions appears to be the most representative for
battery-powered micropower circuits. Offset voltage is
internally trimmed to a minimum value at these supply
voltages. When 9V or 3V batteries or ± 2.5V dual supplies
are used, bias and offset current changes will be minimal.
Offset voltage changes will be just a few microvolts as
given by the PSRR and CMRR specifications. For example,
if PSRR = 114dB (= 2μV/V), at 9V the offset voltage change
will be 8μV. Similarly, VS = ± 2.5V, VCM = 0V is equivalent
to a common mode voltage change of 2.4V or a V
change of 7μV if CMRR = 110dB (3μV/V).

OS

LT1078/79 • TPC26

A full set of specifications is also provided at ± 15V supply
voltages for comparison with other devices and for com­pleteness.

Single Supply Operation

The LT1078/LT1079 are fully specified for single supply
operation, i.e., when the negative supply is 0V. Input
common mode range goes below ground and the output
swings within a few millivolts of ground while sinking
current. All competing micropower op amps either cannot
swing to within 600mV of ground (OP-20, OP-220, OP-420)
or need a pull-down resistor connected to the output to swing
to ground (OP-90, OP-290, OP-490, HA5141/42/44). This

10

10789fe

LT1078/LT1079

U

WUU

APPLICATIONS INFORMATION

difference is critical because in many applications these
competing devices cannot be operated as micropower op
amps and swing to ground simultaneously.

As an example, consider the instrumentation amplifier
shown on the front page. When the common mode signal
is low and the output is high, amplifier A has to sink
current. When the common mode signal is high and the
output low, amplifier B has to sink current. The competing
devices require a 12k pull-down resistor at the output of
amplifier A and a 15k at the output of B to handle the
specified signals. (The LT1078 does not need pull-down
resistors.) When the common mode input is high and the
output is high these pull-down resistors draw 300μA (150μA
each), which is excessive for micropower applications.

The instrumentation amplifier is by no means the only
application requiring current sinking capability. In seven
of the nine single supply applications shown in this data
sheet the op amps have to be able to sink current. In two
of the applications the first amplifier has to sink only the
6nA input bias current of the second op amp. The compet­ing devices, however, cannot even sink 6nA without a pull­down resistor

enough to make the amplifier function properly in the
voltage follower mode, Figure 1b.

R

1mV

Figure 1a. Gain 100 Amplifier

5V

–

+

99R

100mV

LT1078/79 • F01a

R

1mV

Figure 1b. Voltage Follower

5V

–

+

99R

100mV

LT1078/79 • F01a

Single supply operation can also create difficulties 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
(1 and 2), OP-90/290/490 (2 only):

1. 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
LT1078/LT1079, resistors in series with the input protect
the devices even when the input is 5V below ground.

Since the output of the LT1078/LT1079 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 in Figure 1a, but is not

4V

2V

0V

6V

INPUT 1ms/DIV

P-P

–1V TO 5V

LT1078/79 • F02a

Figure 2. Voltage Follower with Input Exceeding the Negative Common Mode Range (VS = 5V, 0V)

4V

2V

0V

OP-90 EXHIBITS OUTPUT PHASE REVERSAL

2. When the input is more than 400mV below ground (at
25°C), the input stage saturates and phase reversal
occurs at the output. This can cause lockup in servo
systems. Due to a unique phase reversal protection cir­cuitry, the LT1078/LT1079 output does not reverse, as
illustrated in Figure 2, even when the inputs are at –1V.

4V

2V

0V

1ms/DIV

LT1078/79 • F02b

LT1078/LT1079 NO PHASE REVERSAL

1ms/DIV

LT1078/79 • F02C

10789fe

11

LT1078/LT1079

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APPLICATIONS INFORMATION

Matching Specifications

In many applications the performance of a system de­pends on the matching between two op amps, rather than
the individual characteristics of the two devices. The two
and three op amp instrumentation amplifier configura­tions shown in this data sheet are examples. Matching
characteristics are not 100% tested on the LT1078/LT1079.

Table 1

LT1078AC/LT1079AC/LT1078AM/LT1079AM LT1078C/LT1079C/LT1078M/LT1079M

PARAMETER 50% YIELD 98% YIELD 50% YIELD 98% YIELD UNITS

VOS Match, ΔV

Temperature Coefficient ΔV
Average Noninverting I
Match of Noninverting I
CMRR Match 120 100 117 97 dB
PSRR Match 117 105 117 102 dB

OS

LT1078 30 110 50 190 μV
LT1079 40 150 50 250 μV

OS

B

B

0.5 1.2 0.6 1.8 μV/°C

68610 nA

0.12 0.4 0.15 0.5 nA

Some specifications are guaranteed by definition. For
example, 70μV maximum offset voltage implies that mis-
match cannot be more than 140μV. 97dB (= 14μV/V)
CMRR means that worst-case CMRR match is 91dB
(= 28μV/V). However, Table 1 can be used to estimate the
expected matching performance at V

= 5V, 0V between

S

the two sides of the LT1078, and between amplifiers A and
D, and between amplifiers B and C of the LT1079.

Comparator Applications

The single supply operation of the LT1078/LT1079 and its
ability to swing close to ground while sinking current

4

2

0

0

–100

INPUT (mV) OUTPUT (V)

= 5V, 0V 200μs/DIV

V

S

Figure 3. Comparator Rise Response
Time to 10mV, 5mV, 2mV Overdrives

LT2078/79 • F03

lends itself to use as a precision comparator with TTL
compatible output.

4

2

0

100

0

INPUT (mV) OUTPUT (V)

VS = 5V, 0V 200μs/DIV

Figure 4. Comparator Fall Response
Time to 10mV, 5mV, 2mV Overdrives

LT2078/79 • F04

12

10789fe

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TYPICAL APPLICATIONS

Micropower, 10ppm/°C, ±5V Reference Gain of 10 Difference Amplifier

2M

LT1034BC-1.2

160k
1%

THE LT1078 CONTRIBUTES LESS THAN 3% OF THE TOTAL OUTPUT NOISE AND
DRIFT WITH TIME AND TEMPERATURE. THE ACCURACY OF THE –5V OUTPUT
DEPENDS ON THE MATCHING OF THE TWO 1M RESISTORS

220k

120k

3

2

20k

SUPPLY CURRENT = 9V BATTERY = 115μA

OUTPUT NOISE = 36μV

9V

8

+

1/2 LT1078

–

4

–9V

510k

1%

–9V BATTERY = 85μA

P-P

5.000V

1M

1

510k

, 0.1Hz TO 10Hz

OUT

6

–

1/2 LT1078

5

+

1M

7

–5.000V

LT1078/79 • TA03

OUT

LT1078/LT1079

10M

1M

–IN

1M

+IN

BANDWIDTH= 20kHz

OUTPUT OFFSET= 0.7mV

OUTPUT NOISE= 80μV

THE USEFULNESS OF DIFFERENCE AMPLIFIERS IS LIMITED BY
THE FACT THAT THE INPUT RESISTANCE IS EQUAL TO THE SOURCE
RESISTANCE. THE PICOAMPERE OFFSET CURRENT AND LOW
CURRENT NOISE OF THE LT1078 ALLOWS THE USE OF 1M SOURCE
RESISTORS WITHOUT DEGRADATION IN PERFORMANCE. IN ADDITION,
WITH MEGOHM RESISTORS MICROPOWER OPERATION CAN BE MAINTAINED

–

1/2 LT1078

+

10M

3V

(0.1Hz TO 10Hz)

P-P

260μV

RMS

BANDWIDTH

OUTPUT

0.0035V TO 2.4V

OVER FULL

LT1078/79 • TA04

Picoampere Input Current, Triple Op Amp Instrumentation Amplifier with Bias Current Cancellation

–IN

+IN

R
10M

2R
20M

2R

20M

3

2

6

5

12

13

+

1/4 LT1079

–

–

1/4 LT1079

+

9V

4

+

1/4 LT1079

–

11

R2

1M

1

R1
1M

R3

R

G

200k

9

R1
1M

7

R2

1M

14

–

1/4 LT1079

10

+

R3

9.1M

2R1

GAIN = 1 +

INPUT BIAS CURRENT TYPICALLY < 150pA
INPUT RESISTANCE = 3R = 30M FOR VALUES SHOWN
NEGATIVE COMMON MODE LIMIT = (I
GAIN BANDWIDTH PRODUCT = 1.8MHz

R3

()

R

R2

G

9.1M

8

OUTPUT
4mV TO 8.2V

LT`1078/79 • TA05

= 100 FOR VALUES SHOWN

)(2R) + 20mV ≈ 140mV

B

10789fe

13

LT1078/LT1079

TYPICAL APPLICATIONS

85V, –100V Common Mode Range
Instrumentation Amplifier (A

1M

V

U

= 10)

Half-Wave Rectifier

2M

+IN

–IN

10M

2

–

10M

1/2 LT1078

3

+

1M

BANDWIDTH= 2kHz

OUTPUT OFFSET= 8mV

OUTPUT NOISE= 0.8mV

INPUT RESISTANCE = 10M

9V

–9V

10M

8

100k

1

4

= 1.4mV

(DOMINATED BY RESISTOR NOISE)

6

–

100k

1/2 LT1078

5

+

(0.1Hz TO 10Hz)

P-P

OVER FULL BANDWIDTH

RMS

7

OUTPUT
8V TO –9V

LT1078/79 • TA06

1.8V

–1.8V

INPUT

2M

1M

3V

–

1/2 LT1078

+

1.8V

OUTPUT

V

= 6mV

OMIN

NO DISTORTION TO 100Hz

0V

LT1078/79 • TA07

Absolute Value Circuit (Full-Wave Rectifier)

200k

5

+

1/2 LT1078

6

–

= 4mV

3.5V

0V

7

LT1078/79 • TA08

OUTPUT

3.5V

–3.5V

INPUT

200k

2

–

1/2 LT1078

3

+

5V

8

1

1N4148

4

V

OMIN

NO DISTORTION TO 100Hz

14

Programmable Gain Amplifier (Single Supply)

3V TO 18V

4

2

–

1/4 LT1079

3

+

IN

ERROR DUE TO SWITCH ON RESISTANCE,
LEAKAGE CURRENT, NOISE AND TRANSIENTS
ARE ELIMINATED

1

6

11

–

1/4 LT1079

5

+

7

9

10

–

1/4 LT1079

+

1M100k10k1.11k

1

3

88

3V TO 18V

A

B

C

CD4016B

13 5 6

11

13

–

2

4

9

7

1/4 LT1079

12

+

GAIN PIN 13 PIN 5 PIN 6
1000 HIGH LOW LOW
100 LOW HIGH LOW
10 LOW LOW HIGH

14

LT1078/79 • TA09

CD4016B

OUT

10789fe

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TYPICAL APPLICATIONS

Single Supply, Micropower, Second Order Lowpass Filter with 60Hz Notch

LT1078/LT1079

0.02μF

27.6k

0.1%

IN

Y INPUT

(5mV TO 50V)

X INPUT

(5mV TO 50V)

505k

0.1%

505k

0.1%

27.6k

0.1%

f

= 40Hz

C

Q > 30

0.01μF

9V

–

6

1/4 LT1079

+

5

–1.5V TO – 9V

–

2

1/4 LT1079

+

3

1000pF

0.5%

6

–

1/2 LT1078

5

+

7

LT1078/79 • TA10

5V

8

3

+

1/2 LT1078

2

–

4

5.1M1%120k

100pF

5%

2.64M

0.1%

1

1000pF

0.5%

2.64M

0.1%

2000pF

0.5%

1.35M

0.1%

Micropower Multiplier/Divider

220pF 220pF

4

714

11

220pF

1

Q1

30k
5%

Q2 Q4

30k
5%

Q3

30k
5%

499k

0.5%

10

–

9

1/4 LT1079

+

1/4 LT1079

10k

GAIN

–

+

8

13

12

OUTPUT
(5mV TO 8V)

OUTPUT
TYPICAL OFFSET
≈ 600μV

505k

0.1%
Z INPUT

(5mV TO 50V)

LT1078/79 • TA11

Q1,Q2, Q3, Q4 = MAT-04
TYPICAL LINEARITY = 0.01% OF FULL-SCALE OUTPUT

OUTPUT = , POSITIVE INPUTS ONLY

NEGATIVE SUPPLY CURRENT = 165μA +

POSITIVE SUPPLY CURRENT = 165μA +

BANDWIDTH (< 3V

(X)(Y)

(Z)

SIGNAL): X AND Y INPUTS = 10kHz

P-P

Z INPUT = 4kHz

X + Y+ Z + OUT

500k

OUT

500k

10789fe

15

LT1078/LT1079

TYPICAL APPLICATIONS

U

Micropower Dead Zone Generator

INPUT

1M**

510k

Q1

2N4393

1M

6

5

–

2

+

3

9V

–

1/4 LT1079

+

1M**

1/4 LT1079

1N914

4

11

1

1M 680k

1M

7

Q4

1M*

Q2 Q3

1M*

–

9

1/4 LT1079

+

10

1N914

Q5

BIPOLAR SYMMETRY IS EXCELLENT
BECAUSE ONE DEVICE, Q2,
SETS BOTH LIMITS
SUPPLY CURRENT ≈ 240μA

–9V

BANDWIDTH = 150kHz

GAIN
200k

1000pF

V

SET

DEAD ZONE
CONTROL INPUT

0.4V TO 5V

470k

1M**

8

510k

510k

1M**

–

13

14

V

LT1078/79 • TA12

V

OUT

OUT

V

SET

1/4 LT1079

+

12

Q6
2N4393

1% FILM

*

RATIO MATCH 0.05%

**

Q2, Q3, Q4, Q5 CA3096 TRANSISTOR ARRAY

V

SET

V

IN

16

10789fe

U

TYPICAL APPLICATIONS

Lead-Acid Low-Battery Detector with System Shutdown

2M1%2M

255k1%280k

1%

1%

910k
5%

3

+

1/2 LT1078

2

–

LT1004-1.2

TOTAL SUPPLY CURRENT = 105μA

5

+

1/2 LT1078

6

–

LT1078/79 • TA13

1

8

4

BATTERY
OUTPUT

12V

LO = BATTERY LOW

< 10.90V)

(IF V

S

LO = SYSTEM SHUTDOWN

7

(IF V

< 10.05V)

S

LT1078/LT1079

LT1004-1.2

Platinum RTD Signal Conditioner with Curvature Correction

3V (LITHIUM)

8

1

1/2 LT1078

4

= ROSEMOUNT 118MF

R

P

**

= TRW MAR-6 0.1%

*

= 1% METAL FILM

13k*

10k*

50k
5°C
TRIM

12.3k*

1k**

1k**

R

1k AT

0°C

1k**

P

1μF

3

+

2

–

1μF

220°C

43.2k**

–

6

1/2 LT1078

+

5

1.21M*

(SELECT AT 110°C)

5k

TRIM

0.02V TO 2.2V

7

2°C TO 220°C ±0.1°C

LT1078/79 • TA14

OUT

=

10789fe

17

LT1078/LT1079

SI PLIFIED

SCHEMATIC

WW

1/2 LT1078, 1/4 LT1079

+

V

11.5k

Q53

2

Q47

Q46

–

V

+

V

Q44

Q48

Q42

Q50

+

V

Q38

Q45

Q55

Q51

Q43

5.35k

Q40

Q41

9.1k

LT1078/79 • SIMPLIFIED SCHEM

Q49

Q52

12.5k

J1

700k

700k

–

V

Q36

30Ω

OUT

30Ω

5k

Q54

1

1

150k

Q33

10k

1

C4

4pF

1.35k

Q25

Q30

3.6k

3

3k

Q35

Q26

2.9k

Q31

Q23

Q34

10k 10k 2.2k 5.6k

C2

Q16 Q14

Q3

Q12

4

1

Q39

Q7

6.2k

Q27

V

+

Q28

Q24

Q4

8.6k

50pF

2.5pF

Q10

Q8

6.2k

Q6

Q5

Q11

Q1

600Ω

–

IN

+

IN

600Ω

Q21

Q2
Q22

Q9

175pF

Q29

C1

C5

Q18

Q17

1.3k

Q15 Q32

C3

40pF

Q19

Q37

Q20

PACKAGE DESCRIPTIO

0.335 – 0.370

(8.509 – 9.398)

DIA

0.305 – 0.335

(7.747 – 8.509)

0.016 – 0.021**
(0.406 – 0.533)

SEATING

PLANE

0.010 – 0.045*
(0.254 – 1.143)

0.040

(1.016)

MAX

18

U

H Package

8-Lead TO-5 Metal Can (.230 Inch PCD)

(Reference LTC DWG # 05-08-1321)

45°TYP

0.028 – 0.034

(0.711 – 0.864)

0.050

(1.270)

MAX

0.165 – 0.185

GAUGE
PLANE

(4.191 – 4.699)

0.500 – 0.750

(12.700 – 19.050)

REFERENCE
PLANE

OBSOLETE PACKAGE

*

LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE
AND 0.045" BELOW THE REFERENCE PLANE

**

FOR SOLDER DIP LEAD FINISH, LEAD DIAMETER IS

0.110 – 0.160

(2.794 – 4.064)

INSULATING

STANDOFF

0.027 – 0.045

(0.686 – 1.143)

PIN 1

0.016 – 0.024

(0.406 – 0.610)

H8 (TO-5) 0.230 PCD 1197

0.230

(5.842)

TYP

10789fe

PACKAGE DESCRIPTIO

CORNER LEADS OPTION

(4 PLCS)

0.023 – 0.045

(0.584 – 1.143)

HALF LEAD

0.045 – 0.068

(1.143 – 1.727)

FULL LEAD

OPTION

0.300 BSC

(0.762 BSC)

0.008 – 0.018

(0.203 – 0.457)

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

OPTION

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

0° – 15°

0.300 BSC

(0.762 BSC)

0.008 – 0.018

(0.203 – 0.457)

0.045 – 0.065

(1.143 – 1.651)

U

J8 Package

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

(Reference LTC DWG # 05-08-1110)

(5.080)

0.015 – 0.060

(0.381 – 1.524)

0° – 15°

0.045 – 0.065

(1.143 – 1.651)

0.014 – 0.026

(0.360 – 0.660)

J Package

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

(Reference LTC DWG # 05-08-1110)

0.200

(5.080)

MAX

0.015 – 0.060

(0.381 – 1.524)

0.014 – 0.026

(0.360 – 0.660)

0.100

(2.54)

BSC

0.125

(3.175)

MIN

0.100

(2.54)

BSC

0.005

(0.127)

MIN

0.025

(0.635)

RAD TYP

0.200

MAX

0.025

(0.635)

RAD TYP

0.125

3.175
MIN

14

234

1

LT1078/LT1079

0.405

87

12

0.785

MAX

11 891013

(10.287)

MAX

65

3

56

4

7

0.005

(0.127)

MIN

(19.939)

12

0.220 – 0.310

(5.588 – 7.874)

J8 1298

0.220 – 0.310

(5.588 – 7.874)

J14 1298

OBSOLETE PACKAGES

N8 Package

8-Lead PDIP (Narrow .300 Inch)

(Reference LTC DWG # 05-08-1510)

0.300 – 0.325

(7.620 – 8.255)

0.065

(1.651)

0.009 – 0.015

(0.229 – 0.381)

+0.035

0.325
–0.015

+0.889

8.255

()

–0.381

*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)

TYP

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.

0.045 – 0.065

(1.143 – 1.651)

0.100
(2.54)

BSC

0.130 ± 0.005

(3.302 ± 0.127)

0.125

(3.175)

MIN

0.018 ± 0.003

(0.457 ± 0.076)

0.020

(0.508)

MIN

0.255 ± 0.015*
(6.477 ± 0.381)

0.400*
(10.160)

MAX

87 6

1234

5

N8 1098

10789fe

19

LT1078/LT1079

PACKAGE DESCRIPTION

0.300 – 0.325

(7.620 – 8.255)

0.009 – 0.015

(0.229 – 0.381)

+0.035

0.325
–0.015

+0.889

8.255

()

–0.381

*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)

0.010 – 0.020

(0.254 – 0.508)

0.008 – 0.010

(0.203 – 0.254)

*

DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE

**

DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE

0.130 ± 0.005

(3.302 ± 0.127)

0.020

(0.508)

MIN

× 45°

0.016 – 0.050

(0.406 – 1.270)

0.125

(3.175)

MIN

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

0°– 8° TYP

U

N Package

14-Lead PDIP (Narrow .300 Inch)

(Reference LTC DWG # 05-08-1510)

0.045 – 0.065

(1.143 – 1.651)

0.005

(0.125)

MIN

0.100
(2.54)

BSC

S8 Package

(Reference LTC DWG # 05-08-1610)

0.053 – 0.069

(1.346 – 1.752)

0.014 – 0.019

(0.355 – 0.483)

TYP

0.018 ± 0.003

(0.457 ± 0.076)

0.004 – 0.010

(0.101 – 0.254)

0.050

(1.270)

BSC

0.065

(1.651)

TYP

0.255 ± 0.015*
(6.477 ± 0.381)

0.228 – 0.244

(5.791 – 6.197)

14

0.189 – 0.197*
(4.801 – 5.004)

8

1

0.770*
(19.558)

MAX

11

1213

31

2

7

2

5

6

3

4

5

4

0.150 – 0.157**
(3.810 – 3.988)

SO8 1298

8910

7

6

N14 1098

SW Package

16-Lead Plastic Small Outline (Wide .300 Inch)

0.291 – 0.299**
(7.391 – 7.595)

0° – 8° TYP

0.093 – 0.104

(2.362 – 2.642)

0.010 – 0.029

(0.254 – 0.737)

0.009 – 0.013

(0.229 – 0.330)

NOTE:

1. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS.
THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS

DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE

*

DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE

**

NOTE 1

× 45°

0.016 – 0.050

(0.406 – 1.270)

(Reference LTC DWG # 05-08-1620)

0.050

(1.270)

BSC

0.014 – 0.019

(0.356 – 0.482)

TYP

Linear Technology Corporation

20

1630 McCarthy Blvd., Milpitas, CA 95035-7417

[phone] ● FAX: [phone]

●

www.linear.com

0.037 – 0.045

(0.940 – 1.143)

0.004 – 0.012

(0.102 – 0.305)

NOTE 1

0.398 – 0.413*

(10.109 – 10.490)

15 1413121110 9

16

2345

1

LT/CPI 1201 1.5K REV E • PRINTED IN USA

© LINEAR TECHNOLOGY CORPORATION 1994

6

78

0.394 – 0.419

(10.007 – 10.643)

S16 (WIDE) 1098

10789fe