LT1078S8#TRPBF [Linear]
LT1078 - Micropower, Dual, Single Supply, Precision Op Amps; Package: SO; Pins: 8; Temperature Range: 0°C to 70°C;
| 型号： | LT1078S8#TRPBF |
| 厂家： | 
Linear |
| 描述： | LT1078 - Micropower, Dual, Single Supply, Precision Op Amps; Package: SO; Pins: 8; Temperature Range: 0°C to 70°C 运算放大器 |
| 文件： | 总20页 (文件大小：518K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LT1078/LT1079
Micropower, Dual and
Quad, Single Supply, Precision Op Amps
U
FEATURES
DESCRIPTION
The LT®1078 is a micropower dual op amp in 8-pin
■
Available in 8-Pin SO Package
■
packages including the small outline surface mount pack-
age. 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.
50µA Max Supply Current per Amplifier
■
70µV Max Offset Voltage
■
180µA Max Offset Voltage in 8-Pin SO
■
250pA Max Offset Current
■
0.6µVP-P, 0.1Hz to 10Hz Voltage Noise
■
3pAP-P, 0.1Hz to 10Hz Current Noise
Micropowerperformanceofcompetingdevicesisachieved
at the expense of seriously degrading precision, noise,
speedandoutputdrivespecifications. Thedesigneffortof
the LT1078/LT1079 was concentrated on reducing sup-
ply current without sacrificing other parameters. The
offset voltage achieved is the lowest on any dual or quad
nonchopper stabilized op amp—micropower or other-
wise. 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.
■
0.4µV/°C Offset Voltage Drift
200kHz Gain Bandwidth Product
0.07V/µs Slew Rate
Single Supply Operation
■
■
■
Input Voltage Range Includes Ground
Output Swings to Ground while Sinking Current
No Pull-Down Resistors Needed
■
Output Sources and Sinks 5mA Load Current
U
APPLICATIONS
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.
■
Battery or Solar-Powered Systems
Portable Instrumentation
Remote Sensor Amplifier
Satellite Circuitry
■
Micropower Sample-and-Hold
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 all-
NPN output stage swings to within a few millivolts of
ground while sinking current—no power consuming pull
down resistors are needed.
■
Thermocouple Amplifier
■
Micropower Filters
, LTC and LT are registered trademarks of Linear Technology Corporation.
Distribution of Input Offset Voltage
Single Battery, Micropower, Gain = 100, Instrumentation Amplifier
(LT1078 and LT1079 in H, J, N Packages)
10.1k
1M
16
V
T
= 5V, 0V
= 25°C
S
A
14
12
10
8
3V (LITHIUM CELL)
1M
–
2
3
10.1k
–
8
A
6
1
1/2 LT1078
B
+
7
INVERTING
INPUT
OUT
1/2 LT1078
–
5
+
NONINVERTING
INPUT
4
+
LT1078/79 • TA01
6
TYPICAL PERFORMANCE
OUTPUT NOISE = 8µ5V 0.1Hz TO 10Hz
P-P
4
INPUT OFFSET VOLTAGE = 40µV
INPUT OFFSET CURRENT = 0.2nA
TOTAL POWER DISSIPATION = 240µW
= 30µ0V
OVER FULL BANDWIDTH
RMS
= 0.03V TO 1.8V
INPUT RANGE
2
OUTPUT RANGE = 0.03V TO 2.3V
+
–
(0.3mV≤ V – V ≤ 23mV)
IN IN
COMMON MODE REJECTION = 110dB (AMPLIFIER LIMITED)
GAIN BANDWIDTH PRODUCT = 200kHz
0
OUTPUTS SINK CURRENT—NO PULL-DOWN RESISTORS
ARE NEEDED
–120 –80
–40
40
80
120
0
INPUT OFFSET VOLTAGE (µV)
1078/79 • TA02
1
LT1078/LT1079
W W
U W
ABSOLUTE MAXIMUM RATINGS
Supply Voltage ...................................................... ±22V
Differential Input Voltage ....................................... ±30V
Input Voltage ...............Equal to Positive Supply Voltage
............5V Below Negative Supply Voltage
Operating Temperature Range
LT1078AM/LT1078M/
LT1079AM/LT1079M............................ –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
Output Short-Circuit Duration.......................... Indefinite
Storage Temperature Range
All Grades ......................................... –65°C to 150°C
U
W U
PACKAGE/ORDER INFORMATION
TOP VIEW
TOP VIEW
+
V
8
TOP VIEW
+IN A
1
2
3
4
8
7
6
5
–IN A
A
–
+
V
OUT A
OUT B
OUT A
–IN A
+IN A
1
2
3
4
8
7
6
5
V
OUT A
7
5
1
3
+
+IN B
–IN B
V
A
B
OUT B
–IN B
+IN B
–IN A 2
6
–IN B
B
A
OUT B
B
+IN B
–
+IN A
V
S8 PACKAGE
8-LEAD PLASTIC SO
4
–
V
(CASE)
J8 PACKAGE
8-LEAD CERAMIC DIP
N8 PACKAGE
8-LEAD PDIP
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
H PACKAGE
8-LEAD TO-5 METAL CAN
T
JMAX = 150°C, θJA = 150°C/ W, θJC = 45°C/ W
TJMAX = 150°C, θJA = 100°C/ W (J8)
JMAX = 100°C, θJA = 130°C/ W (N8)
T
TJMAX = 110°C, θJA = 220°C/ W
ORDER PART NUMBER
ORDER PART NUMBER
ORDER PART NUMBER
LT1078ACH
LT1078MH
LT1078ACN8
LT1078AMJ8
LT1078CN8
LT1078IN8
LT1078IS8
LT1078S8
PART MARKING
1078
LT1078MJ8
ORDER PART
ORDER PART
TOP VIEW
TOP VIEW
NUMBER
NUMBER
OUT A
1
2
3
4
5
6
7
8
16 OUT D
15 –IN D
OUT A
–IN A
+IN A
1
2
3
4
5
6
7
14
13
12
11
10
9
OUT D
–IN D
+IN D
–IN A
A
B
D
C
A
B
D
C
LT1079ACN
LT1079CN
LT1079IN
LT1079MJ
LT1079ISW
LT1079SW
+IN A
14
13
12
11
10
9
+IN D
V–
+
+
–
V
V
V
+IN B
+IN C
–IN C
OUT C
NC
+IN B
–IN B
OUT B
+IN C
–IN C
OUT C
–IN B
OUT B
NC
8
J PACKAGE
14-LEAD CERAMIC DIP
N PACKAGE
14-LEAD PDIP
SW PACKAGE
16-LEAD PLASTIC SO WIDE
TJMAX = 150°C, θJA = 100°C/ W (J)
TJMAX = 110°C, θJA = 130°C/ W (N)
NOTE: FOR 14-PIN NARROW
PACKAGE SEE THE LT2079
TJMAX = 110°C, θJA = 150°C/ W
2
LT1078/LT1079
ELECTRICAL CHARACTERISTICS VS = 5V, 0V, VCM = 0.1V, VO = 1.4V, TA = 25°C, unless otherwise noted.
LT1078C/LT1079C
LT1078I/LT1079I
LT1078AC/LT1079AC
LT1078AM/LT1079AM
LT1078M/LT1079M
LT1078S8/LT1079SW
SYMBOL PARAMETER
CONDITIONS (NOTE 1)
MIN
TYP
MAX MIN
TYP
MAX
UNITS
V
Input Offset Voltage
LT1078
30
70
40
60
40
60
120
180
150
300
µV
µV
µV
µV
OS
LT1078IS8/LT1078S8
LT1079
35
100
LT1079ISW/LT1079SW
∆V
∆Time
Long Term Input Offset
Voltage Stability
0.4
0.5
µV/Mo
OS
I
I
Input Offset Current
Input Bias Current
0.05
6
0.25
8
0.05
6
0.35
10
nA
nA
OS
B
e
Input Noise Voltage
Input Noise Voltage Density
0.1Hz to 10Hz (Note 2)
0.6
1.2
0.6
µV
P-P
n
f = 10Hz (Note 2)
29
28
45
37
29
28
nV√Hz
nV√Hz
O
f = 1000Hz (Note 2)
O
i
Input Noise Current
0.1Hz to 10Hz (Note 2)
2.3
4.0
2.3
pA
P-P
n
Input Noise Current Density
f = 10Hz (Note 2)
O
0.06
0.02
0.10
0.06
0.02
pA√Hz
pA√Hz
O
f = 1000Hz
Input Resistance
Differential Mode
Common Mode
(Note 3)
400
800
6
300
800
6
MΩ
GΩ
Input Voltage Range
3.5
0
3.8
–0.3
3.5
0
3.8
–0.3
V
V
CMRR
PSRR
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
V
= 0V to 3.5V
97
110
114
94
108
114
dB
dB
CM
V = 2.3V to 12V
102
100
S
A
V = 0.03V to 4V, No Load
V = 0.03V to 3.5V, R = 50k
200
150
1000
600
150
120
1000
600
V/mV
V/mV
VOL
O
O
L
Maximum Output Voltage
Swing
Output Low, No Load
3.5
0.55
95
6
1.0
130
3.5
0.55
95
6
1.0
130
mV
mV
mV
Output Low, 2k to GND
Output Low, I
= 100µA
SINK
Output High, No Load
Output High, 2k to GND
4.2
3.5
4.4
3.9
4.2
3.5
4.4
3.9
V
V
SR
Slew Rate
A = 1, V = ±2.5V
0.04
0.07
200
38
0.04
0.07
200
39
V/µs
kHz
µA
V
S
GBW
Gain Bandwidth Product
Supply Current per Amplifier
Channel Separation
f ≤ 20kHz
O
I
50
55
S
∆V = 3V, R = 10k
130
2.2
130
2.2
dB
IN
L
Minimum Supply Voltage
(Note 4)
2.3
2.3
V
3
LT1078/LT1079
ELECTRICAL CHARACTERISTICS
VS = 5V, 0V, VCM = 0.1V, VO = 1.4V, –40°C ≤ TA ≤ 85°C for I grades, – 55°C ≤ TA ≤ 125°C for AM/M grades, unless otherwise noted.
LT1078I/LT1079I
LT1078AM/LT1079AM
LT1078M/LT1079M
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
LT1078
LT1078IS8/LT1079
LT1079ISW
●
●
●
70
80
250
280
95
100
100
370
400
560
µV
µV
µV
∆V
∆T
Input Offset Voltage Drift
(Note 5)
●
●
●
0.4
1.8
0.5
0.6
0.7
2.5
3.5
4.0
µV/°C
µV/°C
µV/°C
OS
LT1078IS8
LT1079ISW
I
I
Input Offset Current
●
●
0.07
0.50
10
0.07
0.1
0.70
1.0
nA
nA
OS
LT1078I/LT1079I
Input Bias Current
●
●
●
7
7
12
nA
dB
dB
B
CMRR
PSRR
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
V
= 0.05V to 3.2V
92
98
106
110
88
94
104
110
CM
V = 3.1V to 12V
S
A
V = 0.05V to 4V, No Load
●
●
110
80
600
400
80
60
600
400
V/mV
V/mV
VOL
O
V = 0.05V to 3.5V, R = 50k
O
L
Maximum Output Voltage
Swing
Output Low, No Load
●
●
4.5
125
8
170
4.5
125
8
170
mV
mV
Output Low, I
= 100µA
SINK
Output High, No Load
Output High, 2k to GND
●
●
3.9
3.0
4.2
3.7
3.9
3.0
4.2
3.7
V
V
I
Supply Current per Amplifier
●
43
60
45
70
µA
S
VS = 5V, 0V, VCM = 0.1V, VO = 1.4V, 0°C ≤ TA ≤ 70°C, unless otherwise noted.
LT1078C/LT1079C
LT1078AC/LT1079AC
LT1078S8/LT1079SW
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX MIN
TYP
MAX
UNITS
V
Input Offset Voltage
LT1078
●
●
●
●
50
60
150
180
60
70
85
90
240
270
350
480
µV
µV
µV
µV
OS
LT1079
LT1078S8
LT1079SW
∆V
∆T
Input Offset Voltage Drift
(Note 5)
●
●
●
0.4
1.8
0.5
0.6
0.7
2.5
3.5
4.0
µV/°C
µV/°C
µV/°C
OS
LT1078S8
LT1079SW
I
I
Input Offset Current
●
●
●
●
0.06
6
0.35
9
0.06
6
0.50
11
nA
nA
dB
dB
OS
B
Input Bias Current
CMRR
PSRR
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
V
= 0V to 3.4V
94
108
112
90
97
106
112
CM
V = 2.6V to 12V
S
100
A
V = 0.05V to 4V, No Load
●
●
150
110
750
500
110
80
750
500
V/mV
V/mV
VOL
O
V = 0.05V to 3.5V, R = 50k
O
L
Maximum Output Voltage
Swing
Output Low, No Load
●
●
4.0
105
7
150
4.0
105
7
150
mV
mV
Output Low, I
= 100µA
SINK
Output High, No Load
Output High, 2k to GND
●
●
4.1
3.3
4.3
3.8
4.1
3.3
4.3
3.8
V
V
I
Supply Current per Amplifier
●
40
55
42
63
µA
S
4
LT1078/LT1079
VS = ±15V, TA = 25°C, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
LT1078C/LT1079C
LT1078I/LT1079I
LT1078AC/LT1079AC
LT1078AM/LT1079AM
LT1078M/LT1079M
LT1078S8/LT1079SW
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX MIN
TYP
MAX
UNITS
V
Input Offset Voltage
(Including LT1078IS8/LT1078S8)
LT1079ISW/LT1079SW
50
250
70
80
350
500
µV
µV
OS
I
I
Input Offset Current
Input Bias Current
Input Voltage Range
0.05
6
0.25
8
0.05
6
0.35
10
nA
nA
OS
B
13.5
–15.0
13.8
–15.3
13.5
–15.0
13.8
–15.3
V
V
CMRR
PSRR
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
V
= 13.5V, –15V
100
102
114
114
97
114
114
dB
dB
CM
V = 5V, 0V to ±18V
100
S
A
V
V
= ±10V, R = 50k
1000
400
5000
1100
1000
300
5000
1100
V/mV
V/mV
VOL
O
O
L
= ±10V, R = 2k
L
V
Maximum Output Voltage
Swing
R = 50k
L
±13.0
±11.0
±14.0
±13.2
±13.0
±14.0
V
V
OUT
L
R = 2k
±11.0 ±13.2
SR
Slew Rate
0.06
0.10
46
0.06
0.10
47
V/µs
µA
I
Supply Current per Amplifier
65
75
S
VS = ±15V, –40°C ≤ TA ≤ 85°C for I grades, –55°C ≤ TA ≤ 125°C for AM/M grades unless otherwise noted.
LT1078I/LT1079I
LT1078AM/LT1079AM
LT1078M/LT1079M
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX MIN
TYP
MAX
UNITS
V
Input Offset Voltage
(Including LT1078IS8)
LT1079ISW
●
●
90
430
1.8
120
130
600
825
µV
µV
OS
∆V
∆T
Input Offset Voltage Drift
(Note 5)
●
●
●
0.5
0.6
0.7
0.8
2.5
3.8
5.0
µV/°C
µV/°C
µV/°C
OS
LT1078IS8
LT1079ISW
I
I
Input Offset Current
●
●
0.07
0.50
10
0.07
0.1
0.70
1.0
nA
nA
OS
LT1078I/LT1079I
Input Bias Current
●
●
●
●
●
●
7
7
12
nA
V/mV
dB
B
A
Large-Signal Voltage Gain
Common Mode Rejection Ratio
Power Supply Rejection Ratio
V = ±10V, R = 5k
200
94
700
110
110
±13.5
52
150
90
700
110
110
±13.5
54
VOL
O
L
CMRR
PSRR
V
= 13V, –14.9V
CM
V = 5V, 0V to ±18V
S
98
94
dB
Maximum Output Voltage Swing R = 5k
±11.0
±11.0
V
L
I
Supply Current per Amplifier
80
95
µA
S
5
LT1078/LT1079
VS = ±15V, 0°C ≤ TA ≤ 70°C, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
LT1078C/LT1079C
LT1078AC/LT1079AC
LT1078S8/LT1079SW
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX MIN
TYP
MAX
UNITS
V
Input Offset Voltage
●
●
70
330
90
100
115
460
540
750
µV
µV
µV
OS
LT1078S8
LT1079SW
●
∆V
∆T
Input Offset Voltage Drift
(Note 5)
●
●
●
0.5
1.8
0.6
0.7
0.8
2.5
3.8
5.0
µV/°C
µV/°C
µV/°C
OS
LT1078S8
LT1079SW
I
I
Input Offset Current
●
●
●
●
●
●
●
0.06
6
0.35
9
0.06
6
0.50
11
nA
nA
OS
B
Input Bias Current
A
Large-Signal Voltage Gain
Common Mode Rejection Ratio
Power Supply Rejection Ratio
V
V
= ±10V, R = 5k
300
97
1200
112
112
±13.6
49
250
94
1200
112
112
V/mV
dB
VOL
O
L
CMRR
PSRR
= 13V, –15V
CM
V = 5V, 0V to ±18V
100
97
dB
S
Maximum Output Voltage Swing R = 5k
±11.0
±11.0 ±13.6
V
L
I
Supply Current per Amplifier
73
50
85
µA
S
The
●
denotes specifications which apply over the full operating
Note 3: This parameter is guaranteed by design and is not tested.
temperature range.
Note 4: 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 1: 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 5: This parameter is not 100% tested.
Note 2: This parameter is tested on a sample basis only. All noise
parameters are tested with V = ±2.5V, V = 0V.
S
O
6
LT1078/LT1079
W
U
TYPICAL PERFORMANCE CHARACTERISTICS
Input Bias and Offset Currents
vs Temperature
Input Bias Current
vs Common Mode Voltage
Supply Current vs Temperature
100
50
0
0
–2
55
50
45
40
35
30
25
V
= 5V, 0V
V
S
= 5V, 0V TO ±15V
S
I
OS
V
= ±15V
S
T
= –55°C
A
–4
T
= 25°C
A
–6
T
= 125°C
A
–5
–6
–7
V
= 5V, 0V
S
–8
I
B
–10
–12
–1
0
1
2
3
4
50
TEMPERATURE (°C)
100 125
–50
0
25
50
75
125
–50 –25
0
25
75
100
–25
COMMON MODE VOLTAGE (V)
TEMPERATURE (°C)
LT1078/79 • TPC03
LT1078/79 • TPC01
LT1078/79 • TPC02
0.1Hz to 10Hz Noise
0.01Hz to 10Hz Noise
Noise Spectrum
1000
T
S
= 25°C
T
= 25°C
T
= 25°C
A
A
S
A
S
V
= ±2.5V
V
= ±2.5V
V
= ±2.5V
CHANNEL A
(AT V = ±15V
S
VOLTAGE NOISE
IS 4% LESS
300
100
CURRENT
NOISE
CURRENT NOISE
IS UNCHANGED)
CHANNEL B
CHANNEL A
CHANNEL B
0.4µV
VOLTAGE
NOISE
30
10
1/f CORNER
0.7Hz
0
20
40
60
80
100
0.1
1
10
100
1000
0
2
4
6
8
10
FREQUENCY (Hz)
TIME (SEC)
TIME (SEC)
LT1078/79 • TPC06
LT1078/79 • TPC05
LT1078/79 • TPC04
Distribution of Offset Voltage Drift
with Temperature (In All Packages
Except Surface Mount)
Long Term Stability of Two
Representative Units (LT1078)
10Hz Voltage Noise Distribution
25
20
15
10
5
35
30
25
20
15
10
5
15
10
120
T
= 25°C, V = 5V, 0V
CM
V
V
= 5V, 0V
= 0.1V
A
S
T
S
= 25°C
S
CM
A
109
V
= 0.1V
V
= ±2.5V
120 LT1078'S
70 LT1079'S
520 OP AMPS
329 OP AMPS TESTED
FROM THREE RUNS
1A
2B
89
85
5
106 LT1078'S
45 LT1079'S
0
47
44
–5
–10
–15
1B
2A
7
5
4
3
3
1
1
1
1
0
0
35
40
25
30
–2
–1
0
1
2
0
1
2
3
4
5
TIME (MONTHS)
OFFSET VOLTAGE DRIFT WITH TEMPERATURE (µV/°C)
VOLTAGE NOISE DENSITY (nV/√Hz)
LT1078/79 • TPC08
LT1078/79 • TPC07
LT078/79 • TPC09
7
LT1078/LT1079
TYPICAL PERFORMANCE CHARACTERISTICS
W
U
Voltage Gain vs Frequency
Gain, Phase vs Frequency
Capacitive Load Handling
120
100
80
60
40
20
0
140
120
100
80
30
T
= 25°C
= 5V, 0V
PHASE
MARGIN
66°
A
S
T
= 25°C
A
V
100
120
140
160
180
200
V
= ±15V
S
20
±15V
5V, 0V
A
V
= 1
PHASE
GAIN
V
S
= 5V, 0V
MARGIN
60
10
54°
A
V
= 5
5V, 0V
±15V
40
A
= 10
V
20
0
0
T
= 25°C
= 20pF
A
L
C
–20
–10
10
100
1000
10000
100 1k
0.01 0.1
1
10
10k 100k 1M
10
30
100
1000
300
CAPACITIVE LOAD (pF)
FREQUENCY (Hz)
FREQUENCY (kHz)
LT1078/79 • TPC12
LT1078/79 • TPC10
LTC1078/79 TPC11
Slew Rate, Gain Bandwidth
Product and Phase Margin vs
Temperature
Large-Signal Transient Response
VS = 5V, 0V
Large-Signal Transient Response
VS = ±15V
0.12
0.10
0.08
0.06
0.04
SLEW = ±15V
SLEW = 5V, 0V
80
70
60
50
40
φ
M
= ±15V
0V
φ
M
= 5V, 0V
240
220
200
180
160
0V
GBW = ±15V
AV = 1
NO LOAD
100µs/DIV
AV = 1, NO LOAD
50µs/DIV
GBW = 5V, 0V
INPUT PULSE 0V TO 3.8V
f
O
= 20kHz
LT1078/79 • TPC28
LT1078/79 • TPC27
–50
0
25
50
75 100 125
–25
TEMPERATURE (°C)
LT1078/79 • TPC13
Minimum Supply Voltage
Warm-Up Drift
Voltage Gain vs Load Resistance
100
0
10M
1M
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
–
V
V
= ±15V
= 5V, 0V
V
= 0V
S
S
T
= 25°C
= ±15V
A
S
25°C
–0.1V ≤ V ≤ 0.4V
V
CM
WARM UP DRIFT
–55°C
125°C
AT V = 5V, 0V IS
125°C
S
IMMEASURABLY LOW
–100
–200
–300
–400
–500
70°C
–55°C
125°C
0°C
25°C
25°C
–55°C
LT1079
NONFUNCTIONAL
LT1078
2
100k
2
3
0
1
1
100
1k
10k
100k
1M
0
3
LOAD RESISTANCE TO GROUND (Ω)
POSITIVE SUPPLY VOLTAGE (V)
TIME AFTER POWER-ON (MINUTES)
LT1078/79 • TPC18
LT1078/79 • TPC16
LT1078/79 • TPC17
8
LT1078/LT1079
W
U
TYPICAL PERFORMANCE CHARACTERISTICS
Output Saturation vs Temperature
vs Sink Current
Output Voltage Swing
vs Load Current
Distribution of Input Offset Voltage
(LT1078 in 8-Pin SO Package)
+
V
1000
100
10
16
14
12
10
8
I
= 2mA
25°C
SINK
125°C
T
= 25°C
= 5V, 0V
A
S
V
+
+
V
V
– 1
– 2
–55°C
I
= 1mA
SINK
I
= 100µA
= 10µA
SINK
I
SINK
V
S
= 5V, 0V
I
= 1µA
6
SINK
–
–
V
V
+ 2
+ 1
125°C
4
NO LOAD
25°C
2
R
L
= 5k TO GND
–55°C
–
0
V
1
0
40
–160 –120 –80 –40
80 120 160
–50 –25
0
25
50
75 100 125
0.01
0.1
1
10
TEMPERATURE (°C)
SOURCING OR SINKING LOAD CURRENT (mA)
INPUT OFFSET VOLTAGE (µV)
LT1078/79 • TPC19
LT1078/79 • TPC20
LT1078/79 • TPC21
Common Mode Range
vs Temperature
Undistorted Output Swing
vs Frequency
Closed Loop Output Impedance
+
30
20
10
0
V
+
–
V
S
L
= ±15V
≥ 100k
V
V
= 2.5V TO 18V
= 0V TO –18V
1k
R
5
4
3
2
1
0
+
V
– 1
– 2
+ 1
V
= 5V, 0V
≥ 100k
S
L
A
= 100
V
R
100
A
= 10
+
–
V
V
V
V
= 5V, 0V
≥ 1k
S
L
R
V
R
= ±15V
= 30k
10
1
S
L
A
= 1
V
–
V
T
= 25°C
A
LOAD R ,
L
0.1
TO GND
–
V
– 1
0.01
1
10
100
10
100
1k
10k
100k
–50 –25
0
25
50
75 100 125
FREQUENCY (kHz)
TEMPERATURE (°C)
FREQUENCY (Hz)
LT1078/79 • TPC23
LT1078/79 • TPC24
LT1078/79 • TPC22
Common Mode Rejection Ratio
vs Frequency
Power Supply Rejection Ratio
vs Frequency
Channel Separation vs Frequency
120
120
100
80
60
40
20
0
140
120
100
80
T
A
= 25°C
100
80
60
40
20
0
V
S
= ±15V
POSITIVE
SUPPLY
V
S
= 5V, 0V
NEGATIVE
SUPPLY
60
40
T
= 25°C
A
S
V
V
= ±2.5V
20
T
= 25°C
= 3V TO 2kHz
A
S
IN
P-P
= 10k
V
= ±2.5V + 1V SINE WAVE
R
P-P
L
0
10
100
1k
10k
100k
1M
1k
100k 1M
0.1
1
10 100
10k
10k
FREQUENCY (Hz)
1M
1
10
100
1k
100k
FREQUENCY (Hz)
FREQUENCY (Hz)
LT1078/79 • TPC25
LT1078/79 • TPC26
LT1078/79 • TPC27
9
LT1078/LT1079
W
U
TYPICAL PERFORMANCE CHARACTERISTICS
Small-Signal Transient Response
VS = 5V, 0V
Small-Signal Transient Response
VS = ± 2.5V
0V
0.1V
AV = 1
10µs/DIV
AV = 1
L = 15pF
10µs/DIV
CL = 15pF
C
INPUT 50mV TO 150mV
LT1078/79 • TPC24
LT1078/79 • TPC25
Small-Signal Transient Response
VS = ± 15V
0V
AV = 1
10µs/DIV
C
L = 15pF
LT1078/79 • TPC26
U
W U U
APPLICATIONS INFORMATION
The LT1078/LT1079 devices are fully specified with A full set of specifications is also provided at ±15V supply
V+ = 5V, V– = 0V, VCM = 0.1V. This set of operating voltages for comparison with other devices and for com-
conditions appears to be the most representative for pleteness.
battery-powered micropower circuits. Offset voltage is
Single Supply Operation
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
givenbythePSRRandCMRRspecifications.Forexample,
ifPSRR=114dB(=2µV/V), at9Vtheoffsetvoltagechange
will be 8µV. Similarly, VS = ±2.5V, VCM = 0V is equivalent
to a common mode voltage change of 2.4V or a VOS
change of 7µV if CMRR = 110dB (3µV/V).
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)
orneedapull-downresistorconnectedtotheoutputtoswing
to ground (OP-90, OP-290, OP-490, HA5141/42/44). This
10
LT1078/LT1079
U
W U U
APPLICATIONS INFORMATION
difference is critical because in many applications these
competing devices cannot be operated as micropower op
amps and swing to ground simultaneously.
enough to make the amplifier function properly in the
voltage follower mode, Figure 1b.
5V
5V
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.
R
99R
100mV
–
+
–
+
OUTPUT
SATURATED
≈ 3.5mV
1mV
1mV
LT1078/79 • F01a
LT1078/79 • F01b
Figure 1b. Voltage Follower
Figure 1a. Gain 100 Amplifier
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):
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 compet-
ingdevices, however, cannotevensink6nAwithoutapull-
down resistor
1. Whentheinputismorethanadiodedropbelowground,
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
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 cir-
cuitry, the LT1078/LT1079 output does not reverse, as
illustrated in Figure 2, even when the inputs are at –1V.
4V
2V
4V
2V
4V
2V
0V
0V
0V
6VP-P INPUT
–1V TO 5V
1ms/DIV
1ms/DIV
OP-90 EXHIBITS OUTPUT PHASE REVERSAL
1ms/DIV
LT1078/LT1079 NO PHASE REVERSAL
LT1078/79 • F02a
LT1078/79 • F02b
LT1078/79 • F02C
Figure 2. Voltage Follower with Input Exceeding the Negative Common Mode Range (VS = 5V, 0V)
11
LT1078/LT1079
U
W U U
APPLICATIONS INFORMATION
Matching Specifications
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 VS = 5V, 0V between
the two sides of the LT1078, and between amplifiers A and
D, and between amplifiers B and C of the LT1079.
In many applications the performance of a system de-
pends on the matching between two op amps, rather than
the individual characteristics of the two devices. The two
and three op amp instrumentation amplifier configura-
tions shown in this data sheet are examples. Matching
characteristicsarenot100%testedontheLT1078/LT1079.
Table 1
LT1078AC/LT1079AC/LT1078AM/LT1079AM
LT1078C/LT1079C/LT1078M/LT1079M
PARAMETER
Match, ∆V
50% YIELD
98% YIELD
50% YIELD
98% YIELD
190
UNITS
µV
µV
µV/°C
nA
V
OS
LT1078
LT1079
30
40
0.5
6
110
150
1.2
8
50
50
0.6
6
OS
250
1.8
10
Temperature Coefficient ∆V
Average Noninverting I
OS
B
Match of Noninverting I
CMRR Match
PSRR Match
0.12
120
117
0.4
100
105
0.15
117
117
0.5
97
102
nA
dB
dB
B
Comparator Applications
The single supply operation of the LT1078/LT1079 and its
ability to swing close to ground while sinking current
lends itself to use as a precision comparator with TTL
compatible output.
4
2
4
2
0
0
0
100
–100
0
VS = 5V, 0V
200µs/DIV
VS = 5V, 0V
200µs/DIV
LT2078/79 • F03
LT2078/79 • F04
Figure 4. Comparator Fall Response
Time to 10mV, 5mV, 2mV Overdrives
Figure 3. Comparator Rise Response
Time to 10mV, 5mV, 2mV Overdrives
12
LT1078/LT1079
U
TYPICAL APPLICATIONS
Micropower, 10ppm/°C, ±5V Reference
Gain of 10 Difference Amplifier
2M
10M
9V
LT1034BC-1.2
220k
3V
1M
1M
5.000V
OUT
1M
–IN
+IN
–
OUTPUT
0.0035V TO 2.4V
LT1078/79 • TA04
120k
8
3
2
1/2 LT1078
+
1M
6
5
1
+
–
1/2 LT1078
7
1/2 LT1078
–5.000V
–
OUT
10M
510k
4
+
LT1078/79 • TA03
–9V
510k
1%
BANDWIDTH = 20kHz
OUTPUT OFFSET = 0.7mV
20k
OUTPUT NOISE = µV80 (0.1Hz TO 10Hz)
160k
1%
P-P
RMS
BANDWIDTH
µ2V60 OVER FULL
SUPPLY CURRENT = 9V BATTERY = 115µA
–9V BATTERY = 8µ5A
OUTPUT NOISE = 36µV , 0.1Hz TO 10Hz
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
P-P
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
Picoampere Input Current, Triple Op Amp Instrumentation Amplifier with Bias Current Cancellation
3
R2
–IN
+
1M
1
1/4 LT1079
2
R1
1M
–
R3
9.1M
2R
20M
R
G
200k
9
–
R1
6
5
8
OUTPUT
–
1M
1/4 LT1079
4mV TO 8.2V
7
10
LT`1078/79 • TA05
1/4 LT1079
+
R2
1M
+IN
+
R3
9.1M
9V
R
10M
12
13
4
+
2R1 R3
14
2R
20M
GAIN = 1 +
= 100 FOR VALUES SHOWN
1/4 LT1079
(
)
R
R2
G
–
INPUT BIAS CURRENT TYPICALLY < 150pA
11
INPUT RESISTANCE = 3R = 30M FOR VALUES SHOWN
NEGATIVE COMMON MODE LIMIT = (I )(2R) + 20mV ≈ 140mV
B
GAIN BANDWIDTH PRODUCT = 1.8MHz
13
LT1078/LT1079
U
TYPICAL APPLICATIONS
85V, –100V Common Mode Range
Instrumentation Amplifier (AV = 10)
Half-Wave Rectifier
2M
1M
9V
10M
3V
2M
10M
10M
8
2
3
INPUT
+IN
–IN
–
–
100k
100k
1
6
OUTPUT
–
1/2 LT1078
1/2 LT1078
1M
7
OUTPUT
+
+
1/2 LT1078
8V TO –9V
4
5
V
= 6mV
LT1078/79 • TA06
OMIN
+
NO DISTORTION TO 100Hz
–9V
1M
1.8V
1.8V
0V
BANDWIDTH = 2kHz
OUTPUT OFFSET = 8mV
OUTPUT NOISE = 0.8mV(0.1Hz TO 10Hz)
–1.8V
LT1078/79 • TA07
P-P
=
1.4mV OVER FULL BANDWIDTH
RMS
(DOMINATED BY RESISTOR NOISE)
10M
INPUT RESISTANCE
=
Absolute Value Circuit (Full-Wave Rectifier)
200k
3.5V
0V
5V
200k
8
2
3
INPUT
–
1
5
6
+
1/2 LT1078
7
1N4148
3.5V
OUTPUT
+
1/2 LT1078
4
–
–3.5V
LT1078/79 • TA08
V
= 4mV
OMIN
NO DISTORTION TO 100Hz
Programmable Gain Amplifier (Single Supply)
1.11k
10k
100k
1M
3V TO 18V
3V TO 18V
11
4
2
–
1
1
1/4 LT1079
13
12
–
3
A
+
6
5
14
2
4
9
OUT
–
1/4 LT1079
11
7
B
3
8
1/4 LT1079
+
LT1078/79 • TA09
9
+
–
C
7
8
CD4016B
1/4 LT1079
GAIN
1000
100
10
PIN 13
HIGH
LOW
PIN 5
LOW
HIGH
LOW
PIN 6
LOW
LOW
HIGH
CD4016B
10
IN
+
13
5
6
ERROR DUE TO SWITCH ON RESISTANCE,
LEAKAGE CURRENT, NOISE AND TRANSIENTS
ARE ELIMINATED
LOW
14
LT1078/LT1079
U
TYPICAL APPLICATIONS
Single Supply, Micropower, Second Order Lowpass Filter with 60Hz Notch
0.02µF
6
5
5V
8
27.6k
0.1%
27.6k
0.1%
–
OUTPUT
3
7
2.64M
0.1%
2.64M
0.1%
IN
+
1/2 LT1078
TYPICAL OFFSET
1
≈ 600µV
0.01µF
1/2 LT1078
+
2
2000pF
0.5%
–
4
5.1M
1%
120k
5%
1.35M
0.1%
100pF
1000pF
0.5%
1000pF
0.5%
f
= 40Hz
C
LT1078/79 • TA10
Q > 30
Micropower Multiplier/Divider
505k
0.1%
505k
0.1%
Z INPUT
(5mV TO 50V)
Y INPUT
(5mV TO 50V)
9V
220pF
220pF
Q1
Q3
4
–
–
13
6
5
30k
5%
7
14
1/4 LT1079
1/4 LT1079
30k
5%
+
+
12
10k
GAIN
499k
0.5%
11
–1.5V TO –9V
505k
0.1%
X INPUT
(5mV TO 50V)
–
9
8
OUTPUT
220pF
1/4 LT1079
+
–
(5mV TO 8V)
2
3
Q2
Q4
10
1
1/4 LT1079
LT1078/79 • TA11
+
30k
5%
Q1,Q2, Q3, Q4 = MAT-04
TYPICAL LINEARITY = 0.01% OF FULL-SCALE OUTPUT
(X)(Y)
OUTPUT =
, POSITIVE INPUTS ONLY
(Z)
X + Y+ Z + OUT
500k
OUT
NEGATIVE SUPPLY CURRENT = 165µA +
POSITIVE SUPPLY CURRENT = 165µA +
500k
BANDWIDTH (< 3V SIGNAL): X AND Y INPUTS = 10kHz
P-P
Z INPUT = 4kHz
15
LT1078/LT1079
TYPICAL APPLICATIONS
U
Micropower Dead Zone Generator
Q4
Q2
V
SET
DEAD ZONE
1M*
1M**
CONTROL INPUT
0.4V TO 5V
1M**
510k
–
2
3
Q3
INPUT
1
470k
1/4 LT1079
+
1M*
1M**
GAIN
200k
Q1
2N4393
–
9
1M**
–
8
13
1/4 LT1079
+
1N914
10
14
1M
V
OUT
1/4 LT1079
510k
510k
12
+
LT1078/79 • TA12
9V
1N914
1M
1M
680k
Q6
V
V
SET
OUT
2N4393
4
–
6
5
1000pF
7
V
IN
Q5
1/4 LT1079
BIPOLAR SYMMETRY IS EXCELLENT
BECAUSE ONE DEVICE, Q2,
SETS BOTH LIMITS
SUPPLY CURRENT ≈ 240µA
BANDWIDTH = 150kHz
+
V
SET
11
1% FILM
*
**
RATIO MATCH 0.05%
Q2, Q3, Q4, Q5 CA3096 TRANSISTOR ARRAY
–9V
16
LT1078/LT1079
U
TYPICAL APPLICATIONS
Lead-Acid Low-Battery Detector with System Shutdown
BATTERY
OUTPUT
2M
1%
2M
1%
910k
5%
3
12V
+
1
LO = BATTERY LOW
(IF V < 10.90V)
1/2 LT1078
S
2
–
8
5
6
+
LO = SYSTEM SHUTDOWN
(IF V < 10.05V)
7
1/2 LT1078
S
255k
1%
280k
1%
–
4
LT1004-1.2
LT1078/79 • TA13
TOTAL SUPPLY CURRENT = 105µA
Platinum RTD Signal Conditioner with Curvature Correction
3V (LITHIUM)
13k*
1µF
12.3k*
5k
220°C
TRIM
8
LT1004-1.2
3
2
+
–
10k*
1
43.2k**
1/2 LT1078
4
50k
1k**
1k**
1k**
5°C
TRIM
–
6
5
0.02V TO 2.2V
=
7
OUT
1/2 LT1078
+
2°C TO 220°C ±0.1°C
R
P
= ROSEMOUNT 118MF
** = TRW MAR-6 0.1%
* = 1% METAL FILM
R
P
1k AT
1.21M*
(SELECT AT 110°C)
1µF
0°C
LT1078/79 • TA14
17
LT1078/LT1079
W
W
SI PLIFIED SCHEMATIC
1/2 LT1078, 1/4 LT1079
+
V
5k
11.5k
12.5k
3.6k
10k
10k
Q6
2.2k
Q16
5.6k
1.3k
Q54
1
Q53
2
1
Q14
Q15
Q32
Q37
Q5
Q52
Q47
Q46
–
Q29
Q3
Q30
3
V
Q24
Q4
1
Q40
3k
Q26
Q25
Q41
Q35
+
Q12
4
V
8.6k
C1
50pF
C4
4pF
2.9k
30Ω
OUT
Q11
1
Q44
C5
2.5pF
Q27
Q1
Q21
150k
600Ω
600Ω
–
+
IN
IN
Q31
C3
J1
40pF
Q36
Q18
Q28
Q2
Q22
Q33
Q48
+
Q19
V
Q42
Q50
Q49
Q39
Q9
Q23
Q17
Q10
+
9.1k
V
700k
700k
Q51
Q55
C2
175pF
Q7
Q8
Q45
Q20
10k
Q34
Q43
Q38
5.35k
30Ω
6.2k
1.35k
6.2k
–
V
LT1078/79 • SIMPLIFIED SCHEM
18
LT1078/LT1079
U
Dimensions in inches (millimeters) unless otherwise noted.
PACKAGE DESCRIPTION
H Package
8-Lead TO-5 Metal Can (0.230 PCD)
(LTC DWG # 05-08-1321)
0.335 – 0.370
(8.509 – 9.398)
DIA
0.305 – 0.335
(7.747 – 8.509)
0.040
(1.016)
MAX
0.027 – 0.045
(0.686 – 1.143)
0.050
(1.270)
MAX
45°TYP
0.165 – 0.185
(4.191 – 4.699)
0.027 – 0.034
(0.686 – 0.864)
REFERENCE
PLANE
0.200
(5.080)
TYP
SEATING
PLANE
GAUGE
PLANE
0.500 – 0.750
(12.700 – 19.050)
0.010 – 0.045*
(0.254 – 1.143)
0.016 – 0.021**
(0.406 – 0.533)
0.110 – 0.160
(2.794 – 4.064)
INSULATING
STANDOFF
*LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE
AND 0.045" BELOW THE REFERENCE PLANE
0.016 – 0.024
**FOR SOLDER DIP LEAD FINISH, LEAD DIAMETER IS
(0.406 – 0.610)
H8(TO-5) 0.200 PCD 0595
J8 Package
8-Lead CERDIP (Narrow 0.300, Hermetic)
(LTC DWG # 05-08-1110)
0.200
(5.080)
MAX
0.405
(10.287)
MAX
CORNER LEADS OPTION
(4 PLCS)
0.300 BSC
(0.762 BSC)
0.005
(0.127)
MIN
0.015 – 0.060
(0.381 – 1.524)
6
5
4
8
7
0.023 – 0.045
(0.584 – 1.143)
HALF LEAD
OPTION
0.025
(0.635)
RAD TYP
0.220 – 0.310
(5.588 – 7.874)
0.045 – 0.068
0.008 – 0.018
(0.203 – 0.457)
0° – 15°
(1.143 – 1.727)
FULL LEAD
OPTION
0.045 – 0.068
(1.143 – 1.727)
0.125
3.175
MIN
1
2
3
0.385 ± 0.025
(9.779 ± 0.635)
0.100 ± 0.010
(2.540 ± 0.254)
0.014 – 0.026
(0.360 – 0.660)
J8 0694
NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS.
J Package
14-Lead CERDIP (Narrow 0.300, Hermetic)
(LTC DWG # 05-08-1110)
0.200
(5.080)
MAX
0.300 BSC
(0.762 BSC)
0.785
(19.939)
MAX
0.005
(0.127)
MIN
0.015 – 0.060
(0.381 – 1.524)
14
12
13
11
10
9
8
0.220 – 0.310
(5.588 – 7.874)
0.025
(0.635)
RAD TYP
0.008 – 0.018
(0.203 – 0.457)
0° – 15°
0.385 ± 0.025
(9.779 ± 0.635)
0.045 – 0.068
(1.143 – 1.727)
0.100 ± 0.010
(2.540 ± 0.254)
0.125
(3.175)
MIN
2
3
4
5
6
1
7
0.014 – 0.026
(0.360 – 0.660)
J14 0996
NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP OR TIN PLATE LEADS.
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 represen-
tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.
19
LT1078/LT1079
PACKAGE DESCRIPTION
U
Dimensions in inches (millimeters) unless otherwise noted.
N8 Package
8-Lead PDIP (Narrow 0.300)
(LTC DWG # 05-08-1510)
0.400*
(10.160)
MAX
0.130 ± 0.005
(3.302 ± 0.127)
0.045 – 0.065
(1.143 – 1.651)
0.300 – 0.325
(7.620 – 8.255)
8
1
7
6
5
0.065
(1.651)
TYP
0.009 – 0.015
(0.229 – 0.381)
0.255 ± 0.015*
(6.477 ± 0.381)
0.125
(3.175)
MIN
0.005
*THESE DIMENSIONS DO NOT INCLUDE MOLD
FLASH OR PROTRUSIONS. MOLD FLASH OR
PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
0.015
(0.380)
MIN
+0.025
–0.015
(0.127)
MIN
0.100 ± 0.010
0.325
+0.635
8.255
0.018 ± 0.003
(0.457 ± 0.076)
2
4
N8 0695
3
(
)
–0.381
(2.540 ± 0.254)
N Package
14-Lead PDIP (Narrow 0.300)
(LTC DWG # 05-08-1510)
0.045 – 0.065
(1.143 – 1.651)
0.130 ± 0.005
(3.302 ± 0.127)
0.300 – 0.325
(7.620 – 8.255)
0.770*
(19.558)
MAX
0.015
(0.380)
MIN
14
13
12
11
10
9
8
0.065
(1.651)
TYP
0.009 – 0.015
(0.229 – 0.381)
0.255 ± 0.015*
(6.477 ± 0.381)
+0.025
–0.015
0.325
0.005
(0.125)
0.125
(3.175)
MIN
0.018 ± 0.003
(0.457 ± 0.076)
+0.635
8.255
(
)
–0.381
1
2
3
5
6
7
4
MIN
0.100 ± 0.010
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
(2.540 ± 0.254)
N14 0695
S8 Package
8-Lead Plastic Small Outline (Narrow 0.150)
(LTC DWG # 05-08-1610)
0.189 – 0.197*
(4.801 – 5.004)
7
8
6
5
0.004 – 0.010
(0.101 – 0.254)
0.010 – 0.020
(0.254 – 0.508)
0.150 – 0.157**
(3.810 – 3.988)
× 45°
0.053 – 0.069
(1.346 – 1.752)
*DIMENSION DOES NOT
0.008 – 0.010
(0.203 – 0.254)
0.228 – 0.244
(5.791 – 6.197)
INCLUDE MOLD FLASH.
0°– 8° TYP
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
0.050
(1.270)
TYP
0.016 – 0.050
0.406 – 1.270
0.014 – 0.019
(0.355 – 0.483)
1
2
3
4
SO8 0996
SW Package
16-Lead Plastic Small Outline (Wide 0.300)
(LTC DWG # 05-08-1620)
0.398 – 0.413*
(10.109 – 10.490)
15 14
12
10
9
16
13
11
0.291 – 0.299**
(7.391 – 7.595)
0.037 – 0.045
(0.940 – 1.143)
0.093 – 0.104
(2.362 – 2.642)
0.394 – 0.419
(10.007 – 10.643)
0.010 – 0.029
(0.254 – 0.737)
× 45°
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
0° – 8° TYP
NOTE 1
0.050
(1.270)
TYP
0.004 – 0.012
(0.102 – 0.305)
0.009 – 0.013
(0.229 – 0.330)
DIMENSION DOES NOT INCLUDE MOLD
FLASH. MOLD FLASH SHALL NOT EXCEED
0.006" (0.152mm) PER SIDE
NOTE 1
*
0.014 – 0.019
0.016 – 0.050
(0.406 – 1.270)
(0.356 – 0.482)
TYP
**
DIMENSION DOES NOT INCLUDE
INTERLEAD FLASH. INTERLEAD FLASH SHALL
NOT EXCEED 0.010" (0.254mm) PER SIDE
2
3
5
7
8
1
4
6
S16 (WIDE) 0396
10789fd LT/TP 0297 5K REV D • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 1994
Linear Technology Corporation
●
1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408)432-1900
20
●
●
FAX: (408) 434-0507 TELEX: 499-3977 www.linear-tech.com
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