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LT1178SW#PBF

P1-P3P4-P6P7-P9P10-P12
LT1178/LT1179
1
11789fb
The LT
®
1178 is a micropower dual op amp in the standard
8-pin configuration; the LT1179 is a micropower quad op
amp offered in the standard 14-pin packages. Both
devices are optimized for single supply operation at 5V.
Specifications are also provided at ±15V supplies.
The extremely low supply current is combined with true
precision specifications: offset voltage is 30µV, offset
current is 50pA. Both offset parameters have low drift with
temperature. The 1.5pAp-p current noise and picoampere
offset current permit the use of megaohm level source
resistors without introducing serious errors. Voltage noise,
at 0.9µVp-p, is remarkably low considering the low
supply current.
Both the LT1178 and LT1179 can be operated from a
single supply (as low as one lithium cell or two NiCd
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.
For applications where three times higher supply
current is acceptable, the micropower LT1077 single,
LT1078 dual and LT1079 quad are recommended. The
LT1077/78/79 have significantly higher bandwidth, slew
rate, lower voltage noise and better output drive capability.
■
17µA Max Supply Current per Amplifier
■
70µV Max Offset Voltage
■
250pA Max Offset Current
■
5nA Max Input Bias Current
■
0.9µV
P-P
0.1Hz to 10Hz Voltage Noise
■
1.5pA
P-P
0.1Hz to 10Hz Current Noise
■
0.5µV/°C Offset Voltage Drift
■
85kHz Gain-Bandwidth Product
■
0.04V/µs Slew Rate
■
Single Supply Operation:
Input Voltage Range Includes Ground
Output Swings to Ground While Sinking Current
No Pull Down Resistors are Needed
■
Output Sources and Sinks 5mA Load Current
17µA Max, Dual and Quad,
Single Supply, Precision Op Amps
Self-Buffered, Dual Output, Micropower Reference Supply Current vs Temperature
■
Battery or Solar Powered Systems
Portable Instrumentation
Remote Sensor Amplifier
Satellite Circuitry
■
Micropower Sample-and-Hold
■
Thermocouple Amplifier
■
Micropower Filters
TEMPERATURE (°C)
–50
10
SUPPLY CURRENT PER AMPLIFIER (µA)
12
14
16
–25
0
25 50
LT1178/LT1179 • TA02
75
18
20
100
V
S
= ±15V
V
S
= 5V, 0V
V
S
= ±1.5V
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
+
–
–
+
2
2M
1M* 1M*
1
250k*
0.1µF
0.1µF
LT1004-1.2
1/2 LT1178
1/2 LT1178
4
6
5
8
4V TO 9V
1.2365V
OUTPUT
2.470V
OUTPUT
TOTAL BATTERY CURRENT
OUTPUT ACCURACY
TEMPERATURE COEFFICIENT
LOAD REGULATION
LINE REGULATION
*
= 28µA
= ± 0.4% MAX
= 20ppm/°C
= 25ppm/mA, I
L
≤ 5mA, V
+
≥ 5V
= 10ppm/V
= 0.1% FILM RESISTORS
7
3
LT1178/LT1179 • TA01
, LTC and LT are registered trademarks of Linear Technology Corporation.
LT1178/LT1179
2
11789fb
Supply Voltage ...................................................... ±22V
Differential Input Voltage ....................................... ±30V
Input Voltage ............... Equal to Positive Supply Voltage
Input Voltage ............5V Below Negative Supply Voltage
Output Short-Circuit Duration .......................... Indefinite
Consult LTC Marketing for parts specified with wider operating temperature ranges. Please note that the LT1178S8 surface mount pinout differs from that
of the LT1178 standard plastic or ceramic dual-in-line packages. For similiar performance with standard pinout, see the LT2178.
(Note 1)
ABSOLUTE AXI U RATI GS
WWWU
PACKAGE/ORDER I FOR ATIO
UU
W
Operating Temperature Range
LT1178I/LT1179I .................................. –40°C to 85°C
LT1178C/LT1178S/LT1179C/LT1179S .......0°C to 70°C
Storage Temperature Range ................ –65°C to 150°C
Lead Temperature (Soldering, 10 sec.)................. 300°C
LT1178ACH
LT1178CH
ORDER PART
NUMBER
LT1178ACN8
LT1178CN8
LT1178IN8
LT1178ACJ8
LT1178CJ8
LT1179ACN
LT1179CN
LT1179IN
LT1179ACJ
LT1179CJ
LT11778/1179 • POI01
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
OUT A
–IN A
+IN A
V
+
+IN B
–IN B
OUT B
NC
OUT D
–IN D
+IN D
V
–
+IN C
–IN C
OUT C
NC
ORDER PART
NUMBER
LT1178SW
LT1179SW
ORDER PART
NUMBER
ORDER PART
NUMBER
ORDER PART
NUMBER
TOP VIEW
OUT B
V
+
OUT A
–IN A
–IN B
IN A + IN B
V
–
(CASE)
8
7
5
3
2
1
4
H PACKAGE
8-LEAD TO-5 METAL CAN
A
+
–
+
–
B
1
2
3
4
8
7
6
5
TOP VIEW
OUT A
–IN A
+IN A
V
–
V
+
OUT B
–IN B
+IN B
N PACKAGE
8-LEAD PDIP
B
-
+
A
-
+
1
2
3
4
5
6
7
TOP VIEW
J PACKAGE 14-LEAD CERAMIC DIP
N PACKAGE
14-LEAD PDIP
14
13
12
11
10
9
8
OUT A
–IN A
+IN A
V
+
+IN B
–IN B
OUT B
OUT D
–IN D
+IN D
V
–
+IN C
–IN C
OUT C
D
-
+
A
-
+
C
+
-
B
+
-
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 150°C, θ
JA
= 200°C/W
PART
MARKING
LT1178S8
1178
J PACKAGE 8-LEAD CERDIP
OBSOLETE PACKAGE
Consider the N8 or S8 Package for Alternate Source
OBSOLETE PACKAGE
Consider the N14 Package for Alternate Source
SW PACKAGE
16-LEAD PLASTIC SO WIDE
1
2
3
4
8
7
6
5
TOP VIEW
–IN A
OUT A
V
+
OUT B
+IN A
V
–
+IN B
–IN B
SW PACKAGE
16-LEAD PLASTIC SO WIDE
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
NC
NC
OUT A
–IN A
+IN A
V
–
NC
NC
NC
NC
V
+
OUT B
–IN B
+IN B
NC
NC
LT1178
LT1179
T
JMAX
= 100°C, θ
JA
= 150°C/W
T
JMAX
= 150°C, θ
JA
= 90°C/W
T
JMAX
= 150°C, θ
JA
= 90°C/W
T
JMAX
= 110°C, θ
JA
= 130°C/W
Not Recommended. Use LT1178S8 for
New Designs.
A
-
+
B
-
+
ELECTRICAL CHARACTERISTICS
V
S
= 5V, 0V; V
CM
= 0.1V, V
O
= 1.4V, T
A
= 25°C, unless noted.
LT1178AC/LT1179AC LT1178I/C/S/LT1179I/C/S
SYMBOL PARAMETER CONDITIONS (NOTE 2) MIN TYP MAX MIN TYP MAX UNITS
V
OS
Input Offset Voltage LT1178 30 70 40 120 µV
LT1179 35 100 40 150 µV
LT1178SW 80 450 µV
LT1179SW 90 600 µV
LT1178S8 60 180 µV
∆V
OS
Long Term Input Offset 0.5 0.6 µV/Mo
∆Time Voltage Stability
I
OS
Input Offset Current 0.05 0.25 0.05 0.35 nA
LT1178/LT1179
3
11789fb
V
S
= 5V, 0V; V
CM
= 0.1V, V
O
= 1.4V, T
A
= 25°C, unless noted.
ELECTRICAL CHARACTERISTICS
LT1178AC/LT1179AC LT1178I/C/S/LT1179I/C/S
SYMBOL PARAMETER CONDITIONS (NOTE 2) MIN TYP MAX MIN TYP MAX UNITS
I
B
Input Bias Current 3 5 3 6 nA
e
n
Input Noise Voltage 0.1Hz to 10Hz (Note 3) 0.9 2.0 0.9 µV
P-P
Input Noise Voltage Density f
O
= 10Hz (Note 3) 50 75 50 nV/√Hz
f
O
= 1000Hz (Note 3) 49 65 49 nV/√Hz
i
n
Input Noise Current 0.1Hz to 10Hz (Note 3) 1.5 2.5 1.5 pAp-p
Input Noise Current Density f
O
= 10Hz (Note 3) 0.03 0.07 0.03 pA/√Hz
f
O
= 1000Hz 0.01 0.01 pA/√Hz
Input Resistance (Note 4)
Differential Mode 0.8 2.0 0.6 2.0 GΩ
Common Mode 12 12 GΩ
Input Voltage Range 3.5 3.9 3.5 3.9 V
0–0.3 0 –0.3 V
CMRR Common Mode Rejection Ratio V
CM
= 0V to 3.5V 93 103 90 102 dB
PSRR Power Supply Rejection Ratio V
S
= 2.2V to 12V 94 104 92 104 dB
A
VOL
Large Signal Voltage Gain V
O
= 0.03V to 4V, No Load 140 700 110 700 V/mV
(Note 4)
V
O
= 0.03V to 3.5V, R
L
= 50k 80 200 70 200 V/mV
Maximum Output Voltage Output Low, No Load 6.5 9 6.5 9 mV
Swing Output Low, 2k to GND 0.2 0.6 0.2 0.6 mV
Output Low, I
SINK
= 100µA 120 160 120 160 mV
Output High, No Load 4.2 4.4 4.2 4.4 V
Output High 2k to GND 3.5 3.8 3.5 3.8 V
SR Slew Rate A
V
= 1, C
L
= 10pF (Note 4) 0.013 0.025 0.013 0.025 V/µs
GBW Gain Bandwidth Product f
O
≤ 5kHz 60 60 kHz
I
S
Supply Current 13 18 14 21 µA
per Amplifier V
S
= ±1.5V, V
O
= 0V 12 17 13 20 µA
Channel Separation ∆V
IN
= 3V, R
L
= 10k 130 130 dB
Minimum Supply Voltage (Note 5) 2.0 2.2 2.0 2.2 V
P1-P3P4-P6P7-P9P10-P12

LT1178SW#PBF

Mfr. #:
Buy LT1178SW#PBF
Manufacturer:
Analog Devices Inc.
Description:
Precision Amplifiers 17 A Max, 2x, 1x S, Prec Op Amps
Lifecycle:
New from this manufacturer.
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