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LT1178
Datasheet
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Technical data
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LINEAR TECHNOLOGY LT1178, LT1179 Technical data

查询LT1178A供应商
FEATURES
LT1178/LT1179
17µA Max, Dual and Quad,
Single Supply, Precision Op Amps
U
DESCRIPTIO
■
17µA Max Supply Current per Amplifier
■
70µV Max Offset Voltage
■
250pA Max Offset Current
■
5nA Max Input Bias Current
■
0.9µV
■
1.5pA
■
0.5µV/°C Offset Voltage Drift
■
85kHz Gain-Bandwidth Product
■
0.04V/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 are Needed
■
Output Sources and Sinks 5mA Load Current
U
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.
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.
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.
U
TYPICAL APPLICATIO
Self-Buffered, Dual Output, Micropower Reference Supply Current vs Temperature
20
2
–
1/2 LT1178
3
+
4
250k*
0.1µF
LT1004-1.2
TOTAL BATTERY CURRENT
TEMPERATURE COEFFICIENT
1
2M
1M* 1M*
OUTPUT ACCURACY
LOAD REGULATION
LINE REGULATION
4V TO 9V
5
8
+
1/2 LT1178
6
–
= 0.1% FILM RESISTORS
*
= 28µA = ± 0.4% MAX = 20ppm/°C = 25ppm/mA, I = 10ppm/V
≤ 5mA, V + ≥ 5V
L
0.1µF
7
1.2365V OUTPUT
2.470V OUTPUT
LT1178/LT1179 • TA01
18
16
14
12
SUPPLY CURRENT PER AMPLIFIER (µA)
10
–50
–25
25 50
0
TEMPERATURE (°C)
VS = ±15V
VS = 5V, 0V
VS = ±1.5V
75
LT1178/LT1179 • TA02
100
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1
LT1178/LT1179
WWWU
ABSOLUTE AXI U RATI GS
(Note 1)
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
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
PACKAGE/ORDER I FOR ATIO
TOP VIEW
+
V
OUT A
8
1
A
2
–IN A
+
–
3
IN A + IN B
4
V– (CASE)
H PACKAGE
8-LEAD TO-5 METAL CAN
OUT B
7
B
+
–
5
ORDER PART
NUMBER
LT1178ACH
–IN B
LT1178CH
TOP VIEW
OUT A
1
–IN A
2
­A
+
+IN A
3
–
V
4
N PACKAGE
8-LEAD PDIP
T
= 100°C, θJA = 150°C/W
JMAX
J PACKAGE 8-LEAD CERDIP
V
8
OUT B
7
–IN B
6
-
B
+
+IN B
5
OBSOLETE PACKAGE
Consider the N8 or S8 Package for Alternate Source
TOP VIEW
1
OUT A
2
–IN A
-
A
+
3
+IN A
+
4
V
5
+IN B
+
B
-
6
–IN B
7
OUT B
N PACKAGE
14-LEAD PDIP
= 110°C, θJA = 130°C/W
T
JMAX
J PACKAGE 14-LEAD CERAMIC DIP
OUT D
14
–IN D
13
-
D
+
+IN D
12
–
V
11
+IN C
10
+
C
-
–IN C
9
OUT C
8
OBSOLETE PACKAGE
Consider the N14 Package for Alternate Source
ORDER PART
NUMBER
LT1179ACN LT1179CN LT1179IN
LT1179ACJ LT1179CJ
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.
Not Recommended. Use LT1178S8 for New Designs.
1
NC
2
NC
3
OUT A
4
–IN A
5
+IN A
–
6
V
7
NC
8
NC
16-LEAD PLASTIC SO WIDE
T
JMAX
ORDER PART
+
NUMBER
LT1178ACN8 LT1178CN8 LT1178IN8
LT1178ACJ8 LT1178CJ8
TOP VIEW
LT1178
SW PACKAGE
= 150°C, θJA = 90°C/W
ORDER PART
+IN A
1
–
V
2
3
+IN B
4
–IN B
8-LEAD PLASTIC SO
= 150°C, θJA = 200°C/W
T
JMAX
TOP VIEW
­A
+
+ B
-
S8 PACKAGE
–IN A
8
OUT A
7
+
6
V
5
OUT B
NUMBER
LT1178S8
PART
MARKING
1178
ORDER PART
NUMBER
16
NC
15
NC
+
14
V
13
OUT B
12
–IN B
11
+IN B
10
NC
9
NC
LT1178SW LT1179SW
OUT A
–IN A
+IN A
+IN B
–IN B
OUT B
TOP VIEW
1
2
3
+
4
V
NC
LT1179
5
6
7
8
SW PACKAGE
16-LEAD PLASTIC SO WIDE
= 150°C, θJA = 90°C/W
T
JMAX
16
OUT D
15
–IN D
14
+IN D
–
13
V
12
+IN C
11
–IN C
10
OUT C
9
NC
LT11778/1179 • POI01
ELECTRICAL CHARACTERISTICS
VS = 5V, 0V; VCM = 0.1V, VO = 1.4V, TA = 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
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LT1178/LT1179
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS (NOTE 2) MIN TYP MAX MIN TYP MAX UNITS
I
B
e
n
i
n
CMRR Common Mode Rejection Ratio VCM = 0V to 3.5V 93 103 90 102 dB
PSRR Power Supply Rejection Ratio VS = 2.2V to 12V 94 104 92 104 dB
A
VOL
SR Slew Rate AV = 1, CL = 10pF (Note 4) 0.013 0.025 0.013 0.025 V/µs
GBW Gain Bandwidth Product fO ≤ 5kHz 60 60 kHz
I
S
Input Bias Current 3 5 3 6 nA
Input Noise Voltage 0.1Hz to 10Hz (Note 3) 0.9 2.0 0.9 µV
Input Noise Voltage Density fO = 10Hz (Note 3) 50 75 50 nV/√Hz
f
= 1000Hz (Note 3) 49 65 49 nV/√Hz
O
Input Noise Current 0.1Hz to 10Hz (Note 3) 1.5 2.5 1.5 pAp-p
Input Noise Current Density fO = 10Hz (Note 3) 0.03 0.07 0.03 pA/√Hz
f
= 1000Hz 0.01 0.01 pA/√Hz
O
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
Large Signal Voltage Gain VO = 0.03V to 4V, No Load 140 700 110 700 V/mV
(Note 4)
= 0.03V to 3.5V, RL = 50k 80 200 70 200 V/mV
V
O
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
Supply Current 13 18 14 21 µA per Amplifier VS = ±1.5V, VO = 0V 12 17 13 20 µA
Channel Separation ∆VIN = 3V, RL = 10k 130 130 dB
Minimum Supply Voltage (Note 5) 2.0 2.2 2.0 2.2 V
Output Low, I 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
VS = 5V, 0V; VCM = 0.1V, VO = 1.4V, TA = 25°C, unless noted.
LT1178AC/LT1179AC LT1178I/C/S/LT1179I/C/S
0–0.3 0 –0.3 V
= 100µA 120 160 120 160 mV
SINK
P-P
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LT1178/LT1179
ELECTRICAL CHARACTERISTICS
temperature range of –40°C ≤ T
≤ 85°C for I grades, 0°C ≤ TA ≤ 70°C for SW grades, VS = 5V, 0V; VCM = 0.1V, VO = 1.4V, unless
A
The ● denotes specifications which apply over the full operating
noted. (Note 7)
LT1178I/LT1179I LT1178SW/LT1179SW
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
V
OS
∆VOS/∆T Input Offset Voltage Drift (Note 6) ● 0.6 3.0 0.8 4.5 µV/°C
I
OS
I
B
CMRR Common Mode Rejection VCM = 0.05V to 3.2V I grade ● 84 98 86 100 dB
PSRR Power Supply Rejection VS = 3.0V to 12V I grade ● 86 100 88 102 dB
A
VOL
I
S
lnput Offset Voltage LT1178 ● 80 315 120 650 µV
LT1179 ● 80 345 130 800 µV
Input Offset Current ● 0.07 0.7 0.06 0.50 nA Input Bias Current ● 48 37 nA
Ratio V
Ratio VS = 2.5V to 12V S grade
Large-Signal Voltage Gain VO = 0.05V to 4V, No Load (Note 4) ● 55 350 80 500 V/mV
Maximum Output Voltage Output Low, No Load ● 913 811 mV Swing Output Low, I
Supply Current per Amplifier ● 15 27 15 24 µA
= 0V to 3.4V S grade
CM
= 0.05V to 3.5V, RL = 50k ● 35 130 45 160 V/mV
V
O
= 100µA ● 160 220 140 190 mV
Output High, No Load
SINK
Output High, 2k to GND
● 3.9 4.2 4.1 4.3 V
● 3.0 3.7 3.3 3.8 V
The ● denotes specifications which apply over the full operating temperature range of 0°C ≤ TA ≤ 70°C, VS = 5V, 0V, VCM = 0.1V, VO = 1.4V, unless noted.
LT1178AC/LT1179AC LT1178C/S8/LT1179C
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
V
OS
∆VOS/∆T Input Offset Voltage Drift (Note 6) ● 0.5 2.2 0.6 3.0 µV/°C
I
OS
I
B
CMRR Common Mode Rejection Ratio VCM = 0V to 3.4V ● 90 101 86 100 dB
PSRR Power Supply Rejection Ratio VS = 2.5V to 12V ● 90 102 88 102 dB
A
VOL
I
S
lnput Offset Voltage LT1178 ● 50 170 65 250 µV
LT1178S8 LT1179
LT1178S8
Input Offset Current ● 0.06 0.35 0.06 0.50 nA Input Bias Current ● 36 37 nA
Large-Signal Voltage Gain VO = 0.05V to 4V, No Load (Note 4) ● 105 500 80 500 V/mV
V
= 0.05V to 3.5V, RL = 50k ● 55 160 45 160 V/mV
O
Maximum Output Voltage Output Low, No Load ● 811 811 mV Swing Output Low, I
Output High, No Load Output High, 2k to GND
Supply Current per Amplifier ● 14 21 15 24 µA
= 100µA ● 140 190 140 190 mV
SINK
● 85 350 µV
● 60 200 70 290 µV
● 0.6 3.5 µV/°C
● 4.1 4.3 4.1 4.3 V
● 3.3 3.8 3.3 3.8 V
4
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