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FEATURES
s s s s s s s s s s s
LT1078/LT1079 Micropower, Dual and Quad, Single Supply, Precision Op Amps DESCRIPTIO
The LT (R) 1078 is a micropower dual op amp in 8-pin 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.
Distribution of Input Offset Voltage (LT1078 and LT1079 in H, J, N Packages)
16 14 PERCENT OF UNITS VS = 5V, 0V TA = 25C
s
Available in 8-Pin SO Package 50A Max Supply Current per Amplifier 70V Max Offset Voltage 180A Max Offset Voltage in 8-Pin SO 250pA Max Offset Current 0.6VP-P, 0.1Hz to 10Hz Voltage Noise 3pAP-P, 0.1Hz to 10Hz Current Noise 0.4V/C Offset Voltage Drift 200kHz Gain Bandwidth Product 0.07V/s 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
APPLICATIO S
s
s s 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.
TYPICAL APPLICATIO
10.1k 1M
Single Battery, Micropower, Gain = 100, Instrumentation Amplifier
1M 3V (LITHIUM CELL)
TYPICAL PERFORMANCE INPUT OFFSET VOLTAGE = 40V INPUT OFFSET CURRENT = 0.2nA TOTAL POWER DISSIPATION = 240W COMMON MODE REJECTION = 110dB (AMPLIFIER LIMITED) GAIN BANDWIDTH PRODUCT = 200kHz
OUTPUT NOISE = 85VP-P 0.1Hz TO 10Hz = 300VRMS OVER FULL BANDWIDTH INPUT RANGE = 0.03V TO 1.8V OUTPUT RANGE = 0.03V TO 2.3V (0.3mV VIN+ - VIN- 23mV) OUTPUTS SINK CURRENT--NO PULL-DOWN RESISTORS ARE NEEDED
+
INVERTING INPUT
-
+
3
5 NONINVERTING INPUT +
-
-
2
A 1/2 LT1078
1
10.1k
6
8 7 OUT
B 1/2 LT1078 4
LT1078/79 * TA01
U
U
U
12 10 8 6 4 2 0 -120 -80 -40 40 80 0 INPUT OFFSET VOLTAGE (V) 120
1078/79 * TA02
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LT1078/LT1079
ABSOLUTE MAXIMUM RATINGS
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 ......................................... - 65C to 150C
PACKAGE/ORDER INFORMATION
TOP VIEW V 8 OUT A 1 A -IN A 2 +IN A 3 B 6 -IN B 5 +IN B 4 7 OUT B
+
OUT A 1 -IN A 2 +IN A 3 V- 4 A B
V - (CASE) H PACKAGE 8-LEAD TO-5 METAL CAN
N8 PACKAGE 8-LEAD PDIP TJMAX = 100C, JA = 130C/ W (N8)
TJMAX = 150C, JA = 150C/ W, JC = 45C/ W
ORDER PART NUMBER LT1078ACN8 LT1078CN8 LT1078IN8
J8 PACKAGE 8-LEAD PDIP TJMAX = 150C, JA = 100C/ W (J8)
ORDER PART NUMBER LT1078ACH LT1078MH
OBSOLETE PACKAGES
Consider the N8 and S8 Packages for Alternate Source TOP VIEW OUT A 1 -IN A 2 +IN A 3 V+ 4 B C A D 14 OUT D 13 -IN D 12 +IN D 11 V - 10 +IN C 9 8 -IN C OUT C
LT1078AMJ8 LT1078MJ8 ORDER PART NUMBER LT1079ACN LT1079CN LT1079IN
TOP VIEW OUT A 1 -IN A 2 +IN A 3 V+ 4 B C A D 16 OUT D 15 -IN D 14 +IN D 13 V- 12 +IN C 11 -IN C 10 OUT C 9 NC
+IN B 5 -IN B 6 OUT B 7
N PACKAGE 14-LEAD PDIP TJMAX = 110C, JA = 130C/ W (N) J PACKAGE 14-LEAD CERAMIC DIP TJMAX = 150C, JA = 100C/ W (J)
LT1079MJ
OBSOLETE PACKAGE
Consider the N Packages for Alternate Source
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U
U
W
WW U
W
(Note 1)
Operating Temperature Range LT1078AM/LT1078M/ LT1079AM/LT1079M (OBSOLETE) ..... - 55C to 125C LT1078I/LT1079I .................................... - 40C to 85C LT1078AC/LT1078C/LT1078S8/ LT1079AC/LT1079C .................................... 0C to 70C Lead Temperature (Soldering, 10 sec).................. 300C
TOP VIEW 8 7 6 5 V+ OUT B -IN B +IN B
+IN A 1 V- 2
TOP VIEW 8 A 7 6 B 5 -IN A OUT A V+ OUT B
+IN B 3 -IN B 4
S8 PACKAGE 8-LEAD PLASTIC SO 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
TJMAX = 110C, JA = 220C/ W
ORDER PART NUMBER LT1078IS8 LT1078S8 PART MARKING 1078 ORDER PART NUMBER LT1079ISW LT1079SW
+IN B 5 -IN B 6 OUT B 7 NC 8
SW PACKAGE 16-LEAD PLASTIC SO WIDE NOTE: FOR 14-PIN NARROW PACKAGE SEE THE LT2079 TJMAX = 110C, JA = 150C/ W
LT1078/LT1079
ELECTRICAL CHARACTERISTICS
VS = 5V, 0V, VCM = 0.1V, VO = 1.4V, TA = 25C unless otherwise noted.
LT1078C/LT1079C LT1078I/LT1079I LT1078M/LT1079M LT1078S8/LT1079SW MIN TYP MAX 40 60 40 60 0.5 0.25 8 1.2 45 37 4.0 0.10 0.05 6 0.6 29 28 2.3 0.06 0.02 300 3.5 0 94 100 150 120 6 1.0 130 4.2 3.5 0.04 800 6 3.8 - 0.3 108 114 1000 600 3.5 0.55 95 4.4 3.9 0.07 200 50 39 130 2.3 2.2 2.3 55 6 1.0 130 0.35 10 120 180 150 300
SYMBOL PARAMETER VOS Input Offset Voltage
CONDITIONS (NOTE 2) LT1078 LT1078IS8/LT1078S8 LT1079 LT1079ISW/LT1079SW
LT1078AC/LT1079AC LT1078AM/LT1079AM MIN TYP MAX 30 35 0.4 0.05 6 70 100
UNITS V V V V V/Mo nA nA VP-P nVHz nVHz pAP-P pAHz pAHz M G V V dB dB V/mV V/mV mV mV mV V V V/s kHz A dB V
VOS Time IOS IB en
Long Term Input Offset Voltage Stability Input Offset Current Input Bias Current Input Noise Voltage Input Noise Voltage Density 0.1Hz to 10Hz (Note 3) fO = 10Hz (Note 3) fO = 1000Hz (Note 3) 0.1Hz to 10Hz (Note 3) fO = 10Hz (Note 3) fO = 1000Hz (Note 4) 400 3.5 0 97 102 200 150
0.6 29 28 2.3 0.06 0.02 800 6 3.8 - 0.3 110 114 1000 600 3.5 0.55 95 4.2 3.5 0.04 4.4 3.9 0.07 200 38
in
Input Noise Current Input Noise Current Density Input Resistance Differential Mode Common Mode Input Voltage Range
CMRR PSRR AVOL
Common Mode Rejection Ratio VCM = 0V to 3.5V Power Supply Rejection Ratio Large-Signal Voltage Gain Maximum Output Voltage Swing VS = 2.3V to 12V VO = 0.03V to 4V, No Load VO = 0.03V to 3.5V, RL = 50k Output Low, No Load Output Low, 2k to GND Output Low, ISINK = 100A Output High, No Load Output High, 2k to GND
SR GBW IS
Slew Rate Gain Bandwidth Product Supply Current per Amplifier Channel Separation Minimum Supply Voltage
AV = 1, VS = 2.5V fO 20kHz VIN = 3V, RL = 10k (Note 5)
130 2.2
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LT1078/LT1079
The q denotes the specifications which apply over the temperature range - 40C TA 85C for I grades, - 55C TA 125C for AM/M grades. VS = 5V, 0V, VCM = 0.1V, VO = 1.4V unless otherwise noted.
LT1078I/LT1079I LT1078AM/LT1079AM LT1078M/LT1079M MIN TYP MAX MIN TYP MAX
q q q q q q q q q q q q q q q q q q
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER VOS VOS T IOS IB CMRR PSRR AVOL Input Offset Voltage CONDITIONS
UNITS V V V V/C V/C V/C nA nA nA dB dB V/mV V/mV
LT1078 LT1078IS8/LT1079 LT1079ISW LT1078IS8 LT1079ISW LT1078I/LT1079I
70 80 0.4
250 280 1.8
95 100 100 0.5 0.6 0.7 0.07 0.1 7 88 94 80 60 104 110 600 400 4.5 125 3.9 3.0 4.2 3.7 45
370 400 560 2.5 3.5 4.0 0.70 1.0 12
Input Offset Voltage Drift (Note 6) Input Offset Current Input Bias Current
0.07 7 92 98 110 80 106 110 600 400 4.5 125 3.9 3.0 4.2 3.7 43
0.50 10
Common Mode Rejection Ratio VCM = 0.05V to 3.2V Power Supply Rejection Ratio Large-Signal Voltage Gain Maximum Output Voltage Swing VS = 3.1V to 12V VO = 0.05V to 4V, No Load VO = 0.05V to 3.5V, RL = 50k Output Low, No Load Output Low, ISINK = 100A Output High, No Load Output High, 2k to GND
8 170
8 170
mV mV V V
IS
Supply Current per Amplifier
60
70
A
The q denotes the specifications which apply over the temperature range 0C TA 70C. VS = 5V, 0V, VCM = 0.1V, VO = 1.4V unless otherwise noted.
LT1078C/LT1079C LT1078AC/LT1079AC LT1078S8/LT1079SW MIN TYP MAX MIN TYP MAX
q q q q q q q q q q q q q q q q q q
SYMBOL PARAMETER VOS Input Offset Voltage
CONDITIONS LT1078 LT1079 LT1078S8 LT1079SW LT1078S8 LT1079SW
UNITS V V V V V/C V/C V/C nA nA dB dB V/mV V/mV
50 60
150 180
60 70 85 90 0.5 0.6 0.7 0.06 6 90 97 110 80 106 112 750 500 4.0 105 4.1 3.3 4.3 3.8 42
240 270 350 480 2.5 3.5 4.0 0.50 11
VOS T IOS IB CMRR PSRR AVOL
Input Offset Voltage Drift (Note 6) Input Offset Current Input Bias Current
0.4
1.8
0.06 6 94 100 150 110 108 112 750 500 4.0 105 4.1 3.3 4.3 3.8 40
0.35 9
Common Mode Rejection Ratio VCM = 0V to 3.4V Power Supply Rejection Ratio Large-Signal Voltage Gain Maximum Output Voltage Swing VS = 2.6V to 12V VO = 0.05V to 4V, No Load VO = 0.05V to 3.5V, RL = 50k Output Low, No Load Output Low, ISINK = 100A Output High, No Load Output High, 2k to GND
7 150
7 150
mV mV V V
IS
Supply Current per Amplifier
55
63
A
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LT1078/LT1079
ELECTRICAL CHARACTERISTICS
VS = 15V, TA = 25C unless otherwise noted.
LT1078C/LT1079C LT1078I/LT1079I LT1078M/LT1079M LT1078S8/LT1079SW MIN TYP MAX 70 80 0.05 6 13.5 -15.0 97 100 1000 300 13.0 11.0 0.06 65 13.8 -15.3 114 114 5000 1100 14.0 13.2 0.10 47 75 350 500 0.35 10
SYMBOL PARAMETER VOS IOS IB Input Offset Voltage Input Offset Current Input Bias Current Input Voltage Range CMRR PSRR AVOL VOUT SR IS
CONDITIONS (Including LT1078IS8/LT1078S8) LT1079ISW/LT1079SW
LT1078AC/LT1079AC LT1078AM/LT1079AM MIN TYP MAX 50 0.05 6 13.5 -15.0 100 102 1000 400 13.0 11.0 0.06 13.8 -15.3 114 114 5000 1100 14.0 13.2 0.10 46 250 0.25 8
UNITS V V nA nA V V dB dB V/mV V/mV V V V/s A
Common Mode Rejection Ratio VCM = 13.5V, -15V Power Supply Rejection Ratio Large-Signal Voltage Gain Maximum Output Voltage Swing Slew Rate Supply Current per Amplifier VS = 5V, 0V to 18V VO = 10V, RL = 50k VO = 10V, RL = 2k RL = 50k RL = 2k
The q denotes the specifications which apply over the temperature range - 40C TA 85C for I grades, - 55C TA 125C for AM/M grades. VS = 15V unless otherwise noted.
LT1078I/LT1079I LT1078AM/LT1079AM LT1078M/LT1079M MIN TYP MAX MIN TYP MAX
q q q q q q q q
SYMBOL PARAMETER VOS VOS T IOS IB AVOL CMRR PSRR Input Offset Voltage Input Offset Voltage Drift (Note 6) Input Offset Current
CONDITIONS (Including LT1078IS8) LT1079ISW LT1078IS8 LT1079ISW LT1078I/LT1079I
UNITS V V V/C V/C V/C nA nA nA V/mV dB dB V A
90 0.5
430 1.8
120 130 0.6 0.7 0.8 0.07 0.1 7 150 90 94 11.0 700 110 110 13.5 54
600 825 2.5 3.8 5.0 0.70 1.0 12
0.07 7 200 94 98 11.0 700 110 110 13.5 52
0.50 10
Input Bias Current Large-Signal Voltage Gain VO = 10V, RL = 5k VS = 5V, 0V to 18V
q q q q q
Common Mode Rejection Ratio VCM = 13V, -14.9V Power Supply Rejection Ratio Maximum Output Voltage Swing RL = 5k
IS
Supply Current per Amplifier
80
95
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LT1078/LT1079
0C TA 70C. VS = 15V unless otherwise noted.
ELECTRICAL CHARACTERISTICS
CONDITIONS LT1078S8 LT1079SW
The q denotes the specifications which apply over the temperature range
LT1078C/LT1079C LT1078S8/LT1079SW MIN TYP MAX 90 100 115 0.6 0.7 0.8 0.06 6 250 94 97 11.0 73 1200 112 112 13.6 50 85 460 540 750 2.5 3.8 5.0 0.50 11
SYMBOL PARAMETER VOS Input Offset Voltage
LT1078AC/LT1079AC MIN TYP MAX
q q q q q q q q
UNITS V V V V/C V/C V/C nA nA V/mV dB dB V A
70
330
VOS T IOS IB AVOL CMRR PSRR
Input Offset Voltage Drift (Note 6) Input Offset Current Input Bias Current Large-Signal Voltage Gain Common Mode Rejection Ratio Power Supply Rejection Ratio Maximum Output Voltage Swing
0.5
1.8
LT1078S8 LT1079SW
0.06 6 300 97 100 1200 112 112 13.6 49
0.35 9
VO = 10V, RL = 5k VCM = 13V, -15V VS = 5V, 0V to 18V RL = 5k
q q q
q 11.0 q
IS
Supply Current per Amplifier
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.
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 -300V. Note 6: This parameter is not 100% tested.
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LT1078/LT1079 TYPICAL PERFORMANCE CHARACTERISTICS
Supply Current vs Temperature
OFFSET CURRENT (pA)
55 SUPPLY CURRENT PER AMPLIFIER (A) 50 VS = 15V 45 40 35 30 25 -50 -25 VS = 5V, 0V
100
INPUT BIAS CURRENT (nA)
BIAS CURRENT (nA)
50 25 75 0 TEMPERATURE (C)
0.1Hz to 10Hz Noise
TA = 25C VS = 2.5V NOISE VOLTAGE (0.4V/DIV)
NOISE VOLTAGE (0.4V/DIV)
CHANNEL A
VOLTAGE NOISE DENSITY (nV/Hz) CURRENT NOISE DENSITY (fA/Hz)
CHANNEL B
0
2
6 4 TIME (SEC)
10Hz Voltage Noise Distribution
35 30
PERCENT OF UNITS
20 PERCENT OF UNITS
OFFSET VOLTAGE CHANGE (V)
25 20 15 10 5 0 25
TA = 25C VS = 2.5V 329 OP AMPS TESTED FROM THREE RUNS 106 LT1078'S 45 LT1079'S
35 30 VOLTAGE NOISE DENSITY (nV/Hz)
UW
100
LT1078/79 * TPC01
Input Bias and Offset Currents vs Temperature
VS = 5V, 0V TO 15V IOS
Input Bias Current vs Common Mode Voltage
0 VS = 5V, 0V -2 -4 TA = 25C -6 -8 -10 -12 TA = 125C TA = -55C
50
0
-5 IB -6
125
-7 -50 -25
50 0 75 25 TEMPERATURE (C)
100
125
-1
0 1 2 3 COMMON MODE VOLTAGE (V)
4
LT1078/79 * TPC02
LT1078/79 * TPC03
0.01Hz to 10Hz Noise
1000
Noise Spectrum
TA = 25C VS = 2.5V (AT VS = 15V VOLTAGE NOISE IS 4% LESS CURRENT NOISE IS UNCHANGED)
TA = 25C VS = 2.5V
300
CURRENT NOISE
CHANNEL A 0.4V
100 VOLTAGE NOISE 30 1/f CORNER 0.7Hz 10 0.1 1 100 10 FREQUENCY (Hz) 1000
CHANNEL B
8 10
0
20
60 40 TIME (SEC)
80
100
LT1078/79 * TPC04
LT1078/79 * TPC05
LT1078/79 * TPC06
Distribution of Offset Voltage Drift with Temperature (In All Packages Except Surface Mount)
25 120 VS = 5V, 0V 109 VCM = 0.1V 120 LT1078'S 70 LT1079'S 89 520 OP AMPS 85
Long Term Stability of Two Representative Units (LT1078)
15 10 5 0 -5 1B -10 -15 0 1 2 3 TIME (MONTHS) 4 5 2A TA = 25C, VS = 5V, 0V VCM = 0.1V 1A
15
2B
10
44
47
5 1 7 35 43 1 1 1
40
-2 -1 0 1 2 OFFSET VOLTAGE DRIFT WITH TEMPERATURE (V/C)
LT1078/79 * TPC08
0
LT1078/79 * TPC07
LT078/79 * TPC09
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LT1078/LT1079 TYPICAL PERFORMANCE CHARACTERISTICS
Voltage Gain vs Frequency
140 120
VOLTAGE GAIN (dB)
100 80 60 40 20 0 -20 0.01 0.1
VS = 15V
VOLTAGE GAIN (dB)
5V, 0V 10 GAIN PHASE MARGIN 54
OVERSHOOT (%)
VS = 5V, 0V
1
10 100 1k 10k 100k 1M FREQUENCY (Hz)
LT1078/79 * TPC10
Slew Rate, Gain Bandwidth Product and Phase Margin vs Temperature
SLEW RATE (V/s)
0.12 0.10 0.08 0.06 0.04 M = 15V M = 5V, 0V SLEW = 15V SLEW = 5V, 0V
1V/DIV
70 60 50
5V/DIV
GAIN BANDWIDTH PRODUCT (kHz)
240 220 200 180 fO = 20kHz GBW = 5V, 0V 100 GBW = 15V
160 -50 -25
50 0 75 25 TEMPERATURE (C)
Minimum Supply Voltage
100 0 -100 -200 -300 -400 -500 70C 0C 25C NONFUNCTIONAL -55C
CHANGE IN OFFSET VOLTAGE (V)
V - = 0V -0.1V VCM 0.4V 125C
INPUT OFFSET VOLTAGE (V)
0.5 0.4 0.3 0.2 0.1 0 0 1 LT1078 LT1079
VOLTAGE GAIN (V/V)
0
2 3 1 POSITIVE SUPPLY VOLTAGE (V)
LT1078/79 * TPC16
8
UW
TA = 25C
Gain, Phase vs Frequency
30 PHASE MARGIN 66 20 15V 100 120 PHASE SHIFT (DEG) 140 160 5V, 0V 15V TA = 25C CL = 20pF -10 10 30 100 300 FREQUENCY (kHz) 1000 180 200 20 0 80 60 120 100
Capacitive Load Handling
TA = 25C VS = 5V, 0V
AV = 1
AV = 5 40 AV = 10
0
10
100 1000 CAPACITIVE LOAD (pF)
10000
LT1078/79 * TPC12
LTC1078/79 TPC11
Large-Signal Transient Response VS = 5V, 0V
Large-Signal Transient Response VS = 15V
PHASE MARGIN (DEG)
80
0V
0V
40
AV = 1, NO LOAD 50s/DIV INPUT PULSE 0V TO 3.8V
LT1078/79 * TPC27
AV = 1 NO LOAD
100s/DIV
LT1078/79 * TPC28
125
LT1078/79 * TPC13
Warm-Up Drift
0.8 0.7 0.6 TA = 25C VS = 15V WARM UP DRIFT AT VS = 5V, 0V IS IMMEASURABLY LOW
10M
Voltage Gain vs Load Resistance
VS = 15V VS = 5V, 0V 125C 25C -55C
1M
-55C 25C 125C
2
3
LT1078/79 * TPC17
100k 100
TIME AFTER POWER-ON (MINUTES)
1k 10k 100k LOAD RESISTANCE TO GROUND ()
1M
LT1078/79 * TPC18
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LT1078/LT1079 TYPICAL PERFORMANCE CHARACTERISTICS
Output Saturation vs Temperature vs Sink Current
1000 ISINK = 2mA
V+ 125C 25C V+ - 1 V -2
+
SATURATION VOLTAGE (mV)
ISINK = 1mA 100 ISINK = 100A ISINK = 10A VS = 5V, 0V 10 ISINK = 1A NO LOAD RL = 5k TO GND 1 -50 -25
OUTPUT VOLTAGE SWING (V)
PERCENT OF UNITS
0 25 50 75 TEMPERATURE (C)
Common Mode Range vs Temperature
PEAK-TO-PEAK OUTPUT SWING, VS = 15V (V)
V+ V+ - 1 V+ - 2 V- + 1 V-
V + = 2.5V TO 18V V - = 0V TO -18V
COMMON MODE RANGE (V)
OUTPUT IMPEDANCE ()
V- - 1 -50 -25
0 25 50 75 TEMPERATURE (C)
Common Mode Rejection Ratio vs Frequency
120
POWER SUPPLY REJECTION RATIO (dB)
COMMON MODE REJECTION RATIO (dB)
VS = 15V 80 VS = 5V, 0V 60 40 20 0 10 100 1k 10k FREQUENCY (Hz) 100k 1M
CHANNEL SEPARATION (dB)
100
UW
100
Output Voltage Swing vs Load Current
16 14
-55C
Distribution of Input Offset Voltage (LT1078 in 8-Pin SO Package)
TA = 25C VS = 5V, 0V
12 10 8 6 4 2
V- + 2 125C V- + 1 V
-
25C -55C
125
0.01 0.1 1 10 SOURCING OR SINKING LOAD CURRENT (mA)
LT1078/79 * TPC20
0 40 80 120 160 -160 -120 -80 -40 0 INPUT OFFSET VOLTAGE (V)
LT1078/79 * TPC21
LT1078/79 * TPC19
Undistorted Output Swing vs Frequency
30
PEAK-TO-PEAK OUTPUT SWING, VS = 5V, 0V (V)
Closed Loop Output Impedance
1k AV = 100 AV = 10 10 AV = 1 1
VS = 15V RL 100k VS = 5V, 0V RL 100k VS = 5V, 0V RL 1k
5 4 3 2
20
100
VS = 15V RL = 30k
10 TA = 25C LOAD RL, TO GND 0 0.01 1 10 FREQUENCY (kHz)
1 0 100
LT1078/79 * TPC23
0.1 10 100 1k 10k FREQUENCY (Hz) 100k
LT1078/79 * TPC24
100
125
LT1078/79 * TPC22
Power Supply Rejection Ratio vs Frequency
120 140 120 100 80 60 40 20 0 1 10 100 1k 10k FREQUENCY (Hz) 100k 1M
Channel Separation vs Frequency
TA = 25C
100 80 60 40 20 0 0.1 NEGATIVE SUPPLY
POSITIVE SUPPLY
TA = 25C VS = 2.5V + 1VP-P SINE WAVE
TA = 25C VS = 2.5V VIN = 3VP-P TO 2kHz RL = 10k 1 10 10k 1k 100 FREQUENCY (Hz) 100k 1M
LT1078/79 * TPC25
LT1078/79 * TPC26
LT1078/79 * TPC27
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LT1078/LT1079 TYPICAL PERFORMANCE CHARACTERISTICS
Small-Signal Transient Response VS = 5V, 0V Small-Signal Transient Response VS = 2.5V
20mV/DIV
20mV/DIV
AV = 1 10s/DIV CL = 15pF INPUT 50mV TO 150mV
20mV/DIV
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 (= 2V/V), at 9V the offset voltage change will be 8V. Similarly, VS = 2.5V, VCM = 0V is equivalent to a common mode voltage change of 2.4V or a VOS change of 7V if CMRR = 110dB (3V/V). 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
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U
W
UW
0.1V
0V
AV = 1 CL = 15pF
LT1078/79 * TPC24
10s/DIV
LT1078/79 * TPC25
Small-Signal Transient Response VS = 15V
0V
AV = 1 CL = 15pF
10s/DIV
LT1078/79 * TPC26
U
U
LT1078/LT1079
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 300A (150A 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 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 enough to make the amplifier function properly in the voltage follower mode, Figure 1b.
5V R 5V 99R 100mV 1mV
4V
4V
2V
2V
0V
0V
6VP-P INPUT -1V TO 5V
1ms/DIV
LT1078/79 * F02a
1ms/DIV OP-90 EXHIBITS OUTPUT PHASE REVERSAL
LT1078/79 * F02b
Figure 2. Voltage Follower with Input Exceeding the Negative Common Mode Range (VS = 5V, 0V)
10789fe
U
W
U
U
- +
-
1mV
LT1078/79 * F01a
+
OUTPUT SATURATED 3.5mV
LT1078/79 * F01b
Figure 1a. Gain 100 Amplifier
Figure 1b. Voltage Follower
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. 2. When the input is more than 400mV below ground (at 25C), 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/LT1079 NO PHASE REVERSAL
LT1078/79 * F02C
11
LT1078/LT1079
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
PARAMETER VOS Match, VOS LT1078AC/LT1079AC/LT1078AM/LT1079AM 50% YIELD 98% YIELD 30 110 40 150 0.5 1.2 6 8 0.12 0.4 120 100 117 105 LT1078C/LT1079C/LT1078M/LT1079M 50% YIELD 98% YIELD 50 190 50 250 0.6 1.8 6 10 0.15 0.5 117 97 117 102 UNITS V V V/C nA nA dB dB
LT1078 LT1079 Temperature Coefficient VOS Average Noninverting IB Match of Noninverting IB CMRR Match PSRR Match
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 OUTPUT (V) OUTPUT (V) INPUT (mV) VS = 5V, 0V 200s/DIV
LT2078/79 * F03
2 0
INPUT (mV)
0
-100
Figure 3. Comparator Rise Response Time to 10mV, 5mV, 2mV Overdrives
12
U
W
U
U
Some specifications are guaranteed by definition. For example, 70V maximum offset voltage implies that mismatch cannot be more than 140V. 97dB (= 14V/V) CMRR means that worst-case CMRR match is 91dB (= 28V/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.
4
2
0 100
0
VS = 5V, 0V
200s/DIV
LT2078/79 * F04
Figure 4. Comparator Fall Response Time to 10mV, 5mV, 2mV Overdrives
10789fe
LT1078/LT1079
TYPICAL APPLICATIONS
Micropower, 10ppm/C, 5V Reference
2M LT1034BC-1.2 220k 5.000VOUT 120k 3 1M
1M -IN 1M
9V
+ -
8 1 1M 6
1/2 LT1078 2 4 -9V 510k 1%
510k
160k 1% SUPPLY CURRENT = 9V BATTERY = 115A -9V BATTERY = 85A OUTPUT NOISE = 36VP-P, 0.1Hz TO 10Hz 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
20k
Picoampere Input Current, Triple Op Amp Instrumentation Amplifier with Bias Current Cancellation
-IN 3
2R 20M 6
+IN
R 10M 2R 20M
U
Gain of 10 Difference Amplifier
10M 3V
-
1/2 LT1078 OUTPUT 0.0035V TO 2.4V
LT1078/79 * TA04
-
1/2 LT1078 7 -5.000VOUT
LT1078/79 * TA03
+IN
+
10M
5
+
BANDWIDTH= 20kHz OUTPUT OFFSET= 0.7mV OUTPUT NOISE= 80VP-P (0.1Hz TO 10Hz) 260VRMS OVER FULL BANDWIDTH 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
+
1/4 LT1079 1
R2 1M R1 1M RG 200k 9 R1 1M 10 R2 1M R3 9.1M
2
-
-
1/4 LT1079 8 OUTPUT 4mV TO 8.2V
LT1078/79 * TA05
-
1/4 LT1079 7
+
5
+
9V 4 14
R3 9.1M
12
+ -
1/4 LT1079 13 11
GAIN = 1 + 2R1 R3 = 100 FOR VALUES SHOWN RG R2 INPUT BIAS CURRENT TYPICALLY < 150pA INPUT RESISTANCE = 3R = 30M FOR VALUES SHOWN NEGATIVE COMMON MODE LIMIT = (IB)(2R) + 20mV 140mV GAIN BANDWIDTH PRODUCT = 1.8MHz
(
)
10789fe
13
LT1078/LT1079
TYPICAL APPLICATIONS
85V, -100V Common Mode Range Instrumentation Amplifier (AV = 10)
1M 9V 10M +IN 10M -IN 2 10M
2M INPUT
- +
8 1 100k 6
1/2 LT1078 3 4 -9V
100k
5
1M
2kHz 8mV 0.8mVP-P (0.1Hz TO 10Hz) 1.4mVRMS OVER FULL BANDWIDTH (DOMINATED BY RESISTOR NOISE) INPUT RESISTANCE = 10M
BANDWIDTH= OUTPUT OFFSET= OUTPUT NOISE= =
3.5V
-3.5V
LT1078/79 * TA08
1.11k
10k 3V TO 18V 2
- +
4 1 6 1
1/4 LT1079 3 11
IN ERROR DUE TO SWITCH ON RESISTANCE, LEAKAGE CURRENT, NOISE AND TRANSIENTS ARE ELIMINATED
14
U
- +
Half-Wave Rectifier
2M 3V
-
1/2 LT1078 OUTPUT
1/2 LT1078
7
OUTPUT 8V TO -9V
LT1078/79 * TA06
1M
+
VOMIN = 6mV NO DISTORTION TO 100Hz
1.8V -1.8V
1.8V 0V
LT1078/79 * TA07
Absolute Value Circuit (Full-Wave Rectifier)
200k 5V 200k INPUT 2 3.5V 0V 1 1N4148 4 6 5
- +
8
1/2 LT1078 3
+
1/2 LT1078 7 OUTPUT
-
VOMIN = 4mV NO DISTORTION TO 100Hz
Programmable Gain Amplifier (Single Supply)
100k 1M
3V TO 18V 11 13 A 2 4 9 12
-
1/4 LT1079 14 OUT
-
1/4 LT1079 7 9 3B
+
5
LT1078/79 * TA09
+
-
1/4 LT1079 88
C CD4016B 13 5 6
7 GAIN 1000 100 10 PIN 13 HIGH LOW LOW
10
+
CD4016B PIN 5 LOW HIGH LOW
PIN 6 LOW LOW HIGH
10789fe
LT1078/LT1079
TYPICAL APPLICATIONS
Single Supply, Micropower, Second Order Lowpass Filter with 60Hz Notch
0.02F 27.6k 0.1% IN 27.6k 0.1% 5V 8 1 6 2.64M 0.1% 2.64M 0.1% 2000pF 0.5% 120k 5% 100pF fC = 40Hz Q > 30 1000pF 0.5% 1000pF 0.5%
LT1078/79 * TA10
Y INPUT (5mV TO 50V)
505k 0.1% 9V
1/4 LT1079
7 30k 5%
30k 5%
14
1/4 LT1079 12 10k GAIN
11 -1.5V TO -9V X INPUT (5mV TO 50V) 505k 0.1% 220pF
499k 0.5%
1/4 LT1079
1 30k 5%
+
3
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 POSITIVE SUPPLY CURRENT = 165A + 500k NEGATIVE SUPPLY CURRENT = 165A + BANDWIDTH (< 3VP-P SIGNAL): X AND Y INPUTS = 10kHz Z INPUT = 4kHz
+
-
2
Q2
Q4
10
-
9
1/4 LT1079
8
+
+
5
-
-
6
U
-
1/2 LT1078 7
3 0.01F 2
+ -
5.1M 1%
1/2 LT1078 4
5
+
OUTPUT TYPICAL OFFSET 600V
1.35M 0.1%
Micropower Multiplier/Divider
505k 0.1% Z INPUT (5mV TO 50V)
4
220pF
Q1
Q3
220pF 13
OUTPUT (5mV TO 8V)
LT1078/79 * TA11
10789fe
15
LT1078/LT1079
TYPICAL APPLICATIONS
1M** 1M** INPUT 510k 2
1/4 LT1079
9V
1M
680k
1N914 1000pF
510k Q6 2N4393 VSET VOUT VIN
16
+
5
-
6
4 7 1M Q5
1/4 LT1079 11
-9V
BIPOLAR SYMMETRY IS EXCELLENT VSET BECAUSE ONE DEVICE, Q2, * 1% FILM SETS BOTH LIMITS ** RATIO MATCH 0.05% SUPPLY CURRENT 240A Q2, Q3, Q4, Q5 CA3096 TRANSISTOR ARRAY BANDWIDTH = 150kHz
+
+
1M
1N914
1/4 LT1079 10 510k
12
-
-
Q1 2N4393
+
3
U
Micropower Dead Zone Generator
Q4 1M* Q2 1 1M* GAIN 200k 8 Q3
VSET DEAD ZONE CONTROL INPUT 0.4V TO 5V 470k
-
1M**
9
1M**
13
1/4 LT1079
14
VOUT
LT1078/79 * TA12
10789fe
LT1078/LT1079
TYPICAL APPLICATIONS
2M 1%
255k 1%
Platinum RTD Signal Conditioner with Curvature Correction
3V (LITHIUM) 13k* 12.3k* 10k* 2 50k 5C TRIM 1k** 1k** 43.2k**
LT1004-1.2 1
RP 1k AT 0C
1F
1.21M* (SELECT AT 110C)
LT1078/79 * TA14
+
RP = ROSEMOUNT 118MF ** = TRW MAR-6 0.1% * = 1% METAL FILM
1k**
5
-
U
Lead-Acid Low-Battery Detector with System Shutdown
BATTERY OUTPUT 2M 1% 910k 5% 3 12V
+
1/2 LT1078 1 LO = BATTERY LOW (IF VS < 10.90V)
2
-
5
+ -
8 7 LO = SYSTEM SHUTDOWN (IF VS < 10.05V)
1/2 LT1078 280k 1% LT1004-1.2
LT1078/79 * TA13
6
4
TOTAL SUPPLY CURRENT = 105A
1F 5k 220C TRIM
8
+ -
3
1/2 LT1078 4
6
1/2 LT1078
7
0.02V TO 2.2VOUT = 2C TO 220C 0.1C
10789fe
17
LT1078/LT1079
SI PLIFIED SCHEMATIC
1/2 LT1078, 1/4 LT1079
V+
10k
10k
Q5
Q6
Q11
IN -
600
Q1 Q21 Q2 Q22 Q28 V+ Q39 Q9 C2 175pF Q7 Q8 Q10 Q17 Q20 Q18 C3 40pF Q19
IN +
600
PACKAGE DESCRIPTIO
0.335 - 0.370 (8.509 - 9.398) DIA 0.305 - 0.335 (7.747 - 8.509) 0.040 (1.016) MAX 0.050 (1.270) MAX GAUGE PLANE 0.010 - 0.045* (0.254 - 1.143) 0.016 - 0.021** (0.406 - 0.533) 0.165 - 0.185 (4.191 - 4.699) REFERENCE PLANE 0.500 - 0.750 (12.700 - 19.050)
SEATING PLANE
18
U
W
W
2.2k
5.6k
1.3k
3.6k Q54 1 1
5k Q53 2 Q47
11.5k
12.5k
Q16
Q14
Q15
Q32
Q52 Q46
Q3 Q4 Q24
Q29
Q37 Q30 1 3 Q25 3k Q35 Q26 C4 4pF 2.9k 30 OUT Q44 V+
V- Q40 Q41
Q12 4 1
8.6k
C1 50pF
Q27
C5 2.5pF 150k Q31 Q36 J1 Q33 Q50 Q23 V+ Q45 Q34 10k Q38 30 5.35k Q51 Q55 Q43 700k V-
LT1078/79 * SIMPLIFIED SCHEM
Q48 Q42 Q49
9.1k
700k
6.2k
6.2k
1.35k
H Package 8-Lead TO-5 Metal Can (.230 Inch PCD)
(Reference LTC DWG # 05-08-1321)
0.027 - 0.045 (0.686 - 1.143) 45TYP 0.028 - 0.034 (0.711 - 0.864) PIN 1
0.230 (5.842) TYP
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) 0.230 PCD 1197
OBSOLETE PACKAGE
10789fe
LT1078/LT1079
PACKAGE DESCRIPTIO U
J8 Package 8-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) 0.005 (0.127) MIN 0.405 (10.287) MAX 8 7 6 5 0.025 (0.635) RAD TYP 1 NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS 0.045 - 0.065 (1.143 - 1.651) 0.014 - 0.026 (0.360 - 0.660) 0.100 (2.54) BSC 0.125 3.175 MIN
J8 1298
CORNER LEADS OPTION (4 PLCS)
0.300 BSC (0.762 BSC)
0.023 - 0.045 (0.584 - 1.143) HALF LEAD OPTION 0.045 - 0.068 (1.143 - 1.727) FULL LEAD OPTION
0.220 - 0.310 (5.588 - 7.874)
0.008 - 0.018 (0.203 - 0.457)
0 - 15 2 3 4
J Package 14-Lead CERDIP (Narrow .300 Inch, Hermetic)
(Reference LTC DWG # 05-08-1110)
0.300 BSC (0.762 BSC) 0.200 (5.080) MAX 0.015 - 0.060 (0.381 - 1.524) 0.005 (0.127) MIN 0.785 (19.939) MAX 14 13 12 11 10 9 8
0.008 - 0.018 (0.203 - 0.457)
0.025 (0.635) RAD TYP
0.220 - 0.310 (5.588 - 7.874)
0 - 15 1 0.045 - 0.065 (1.143 - 1.651) 0.100 (2.54) BSC 0.125 (3.175) MIN
J14 1298
2
3
4
5
6
7
NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS
0.014 - 0.026 (0.360 - 0.660)
OBSOLETE PACKAGES
N8 Package 8-Lead PDIP (Narrow .300 Inch)
(Reference LTC DWG # 05-08-1510)
0.400* (10.160) MAX 8 7 6 5
0.300 - 0.325 (7.620 - 8.255)
0.045 - 0.065 (1.143 - 1.651)
0.130 0.005 (3.302 0.127)
0.009 - 0.015 (0.229 - 0.381)
0.065 (1.651) TYP 0.125 (3.175) 0.020 MIN (0.508) MIN 0.018 0.003 (0.457 0.076)
0.255 0.015* (6.477 0.381)
(
+0.035 0.325 -0.015 +0.889 8.255 -0.381
)
1
2
3
4
0.100 (2.54) BSC
N8 1098
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
10789fe
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.
19
LT1078/LT1079
PACKAGE DESCRIPTION
N Package 14-Lead PDIP (Narrow .300 Inch)
(Reference LTC DWG # 05-08-1510)
0.300 - 0.325 (7.620 - 8.255) 0.130 0.005 (3.302 0.127) 0.020 (0.508) MIN 0.009 - 0.015 (0.229 - 0.381) 0.005 (0.125) MIN 0.100 (2.54) *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. BSC MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm) +0.035 0.325 -0.015 8.255 +0.889 -0.381 0.045 - 0.065 (1.143 - 1.651) 0.770* (19.558) MAX 14 13 12 11 10 9 8
(
)
0.125 (3.175) MIN
S8 Package 8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610)
0.010 - 0.020 x 45 (0.254 - 0.508) 0.008 - 0.010 (0.203 - 0.254) 0- 8 TYP 0.053 - 0.069 (1.346 - 1.752) 8 0.004 - 0.010 (0.101 - 0.254) 0.228 - 0.244 (5.791 - 6.197) 0.150 - 0.157** (3.810 - 3.988) 0.189 - 0.197* (4.801 - 5.004) 7 6 5
0.014 - 0.019 (0.355 - 0.483) TYP *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
0.016 - 0.050 (0.406 - 1.270)
0.291 - 0.299** (7.391 - 7.595) 0.010 - 0.029 x 45 (0.254 - 0.737)
0 - 8 TYP
0.009 - 0.013 (0.229 - 0.330)
NOTE 1 0.016 - 0.050 (0.406 - 1.270)
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 1 2 3 4 5 6 7 8
S16 (WIDE) 1098
20
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
q
FAX: (408) 434-0507
U
q
0.065 (1.651) TYP 0.018 0.003 (0.457 0.076)
0.255 0.015* (6.477 0.381)
1
2
3
4
5
6
7
N14 1098
0.050 (1.270) BSC
1
2
3
4
SO8 1298
SW Package 16-Lead Plastic Small Outline (Wide .300 Inch)
(Reference LTC DWG # 05-08-1620)
0.093 - 0.104 (2.362 - 2.642) 0.037 - 0.045 (0.940 - 1.143) 16 15 0.398 - 0.413* (10.109 - 10.490) 14 13 12 11 10 9
0.050 (1.270) BSC
0.004 - 0.012 (0.102 - 0.305)
NOTE 1
0.394 - 0.419 (10.007 - 10.643)
0.014 - 0.019 (0.356 - 0.482) TYP
10789fe LT/CPI 1201 1.5K REV E * PRINTED IN USA
www.linear.com
(c) LINEAR TECHNOLOGY CORPORATION 1994

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