Linear LT1178CJ8 17ua max, dual and quad, single supply, precision op amp Datasheet

LT1178/LT1179
17µA Max, Dual and Quad,
Single Supply, Precision Op Amps
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FEATURES
■
■
■
■
■
■
■
■
■
■
■
DESCRIPTIO
17µA Max Supply Current per Amplifier
70µV Max Offset Voltage
250pA Max Offset Current
5nA Max Input Bias Current
0.9µVP-P 0.1Hz to 10Hz Voltage Noise
1.5pAP-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
■
■
■
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.
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APPLICATIO S
■
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.
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.
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.
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TYPICAL APPLICATIO
Self-Buffered, Dual Output, Micropower Reference
Supply Current vs Temperature
2
–
1/2 LT1178
3
+
1
1.2365V
OUTPUT
4V TO 9V
4
5
250k*
1/2 LT1178
6
0.1µF
+
8
LT1004-1.2
–
7
2.470V
OUTPUT
0.1µF
2M
1M*
1M*
* = 0.1% FILM RESISTORS
TOTAL BATTERY CURRENT = 28µA
OUTPUT ACCURACY = ± 0.4% MAX
TEMPERATURE COEFFICIENT = 20ppm/°C
LOAD REGULATION = 25ppm/mA, IL ≤ 5mA, V + ≥ 5V
LINE REGULATION = 10ppm/V
LT1178/LT1179 • TA01
SUPPLY CURRENT PER AMPLIFIER (µA)
20
VS = ±15V
18
16
VS = 5V, 0V
14
VS = ±1.5V
12
10
–50
–25
25
50
0
TEMPERATURE (°C)
75
100
LT1178/LT1179 • TA02
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LT1178/LT1179
W W
W
AXI U
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ABSOLUTE
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
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
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U
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PACKAGE/ORDER I FOR ATIO
ORDER PART
NUMBER
TOP VIEW
V+
OUT A
OUT B
8
7
1
A
–IN A 2
IN A
–
3
LT1178ACH
LT1178CH
B
+ +
–IN B
–
5
+ IN B
V – (CASE)
4
8 V+
OUT A 1
–IN A 2 A
+IN A 3 +
–
V 4
7 OUT B
B+
6 –IN B
5 +IN B
N PACKAGE
8-LEAD PDIP
TJMAX = 100°C, θJA = 150°C/W
H PACKAGE
8-LEAD TO-5 METAL CAN
ORDER PART
NUMBER
TOP VIEW
J PACKAGE 8-LEAD CERDIP
OBSOLETE PACKAGE
LT1178ACN8
LT1178CN8
LT1178IN8
LT1178ACJ8
LT1178CJ8
ORDER PART
NUMBER
TOP VIEW
+IN A 1
V–
2
+IN B 3
– IN B 4
+A
+
B
-
8
– IN A
7
6
OUT A
V+
5
OUT B
LT1178S8
PART
MARKING
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 200°C/W
1178
Consider the N8 or S8 Package for Alternate Source
TOP VIEW
OUT A 1
–IN A 2 A
+IN A 3 +
V+ 4
+IN B 5 +
B
–IN B 6 OUT B 7
14 OUT D
13 –IN D
D+
12 +IN D
11 V –
+ 10 +IN C
C9 –IN C
ORDER PART
NUMBER
Not Recommended. Use LT1178S8 for
New Designs.
LT1179ACN
LT1179CN
LT1179IN
8 OUT C
N PACKAGE
14-LEAD PDIP
TJMAX = 110°C, θJA = 130°C/W
J PACKAGE 14-LEAD CERAMIC DIP
OBSOLETE PACKAGE
LT1179ACJ
LT1179CJ
TOP VIEW
NC 1
16 NC
NC 2
15 NC
OUT A 3
14 V +
–IN A 4
+IN A 5
V– 6
LT1178
13 OUT B
ORDER PART
NUMBER
LT1178SW
LT1179SW
TOP VIEW
OUT A 1
16 OUT D
–IN A 2
15 –IN D
+IN A 3
V+ 4
14 +IN D
LT1179
13 V –
12 –IN B
+IN B 5
12 +IN C
11 +IN B
–IN B 6
11 –IN C
OUT B 7
10 OUT C
NC 7
10 NC
NC 8
9
NC 8
NC
9 NC
SW PACKAGE
16-LEAD PLASTIC SO WIDE
TJMAX = 150°C, θJA = 90°C/W
SW PACKAGE
16-LEAD PLASTIC SO WIDE
TJMAX = 150°C, θJA = 90°C/W
Consider the N14 Package for Alternate Source
LT11778/1179 • POI01
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.
ELECTRICAL CHARACTERISTICS
VS = 5V, 0V; VCM = 0.1V, VO = 1.4V, TA = 25°C, unless noted.
LT1178AC/LT1179AC
MIN
TYP
MAX
LT1178I/C/S/LT1179I/C/S
MIN
TYP
MAX
30
35
40
40
80
90
60
SYMBOL
PARAMETER
CONDITIONS (NOTE 2)
VOS
Input Offset Voltage
LT1178
LT1179
LT1178SW
LT1179SW
LT1178S8
∆VOS
∆Time
Long Term Input Offset
Voltage Stability
0.5
IOS
Input Offset Current
0.05
70
100
120
150
450
600
180
0.6
0.25
0.05
UNITS
µV
µV
µV
µV
µV
µV/Mo
0.35
nA
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LT1178/LT1179
ELECTRICAL CHARACTERISTICS
LT1178AC/LT1179AC
MIN
TYP
MAX
LT1178I/C/S/LT1179I/C/S
MIN
TYP
MAX
3
5
3
0.1Hz to 10Hz (Note 3)
0.9
2.0
0.9
µVP-P
Input Noise Voltage Density
fO = 10Hz (Note 3)
fO = 1000Hz (Note 3)
50
49
75
65
50
49
nV/√Hz
nV/√Hz
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)
fO = 1000Hz
0.03
0.01
0.07
0.03
0.01
pA/√Hz
pA/√Hz
Input Resistance
Differential Mode
Common Mode
(Note 4)
SYMBOL
PARAMETER
IB
Input Bias Current
en
Input Noise Voltage
in
VS = 5V, 0V; VCM = 0.1V, VO = 1.4V, TA = 25°C, unless noted.
CONDITIONS (NOTE 2)
6
UNITS
nA
0.8
2.0
12
0.6
2.0
12
GΩ
GΩ
Input Voltage Range
3.5
0
3.9
–0.3
3.5
0
3.9
–0.3
V
V
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
AVOL
Large Signal Voltage Gain
VO = 0.03V to 4V, No Load
(Note 4)
VO = 0.03V to 3.5V, RL = 50k
140
700
110
700
V/mV
80
200
70
200
V/mV
Output Low, No Load
Output Low, 2k to GND
Output Low, ISINK = 100µA
Output High, No Load
Output High 2k to GND
4.2
3.5
6.5
0.2
120
4.4
3.8
4.2
3.5
6.5
0.2
120
4.4
3.8
0.013
0.025
0.013
0.025
V/µs
60
kHz
Maximum Output Voltage
Swing
SR
Slew Rate
AV = 1, CL = 10pF (Note 4)
GBW
Gain Bandwidth Product
fO ≤ 5kHz
60
IS
Supply Current
per Amplifier
VS = ±1.5V, VO = 0V
13
12
Channel Separation
∆VIN = 3V, RL = 10k
130
Minimum Supply Voltage
(Note 5)
2.0
9
0.6
160
18
17
14
13
9
0.6
160
21
20
130
2.2
2.0
mV
mV
mV
V
V
µA
µA
dB
2.2
V
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LT1178/LT1179
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating
temperature range of –40°C ≤ TA ≤ 85°C for I grades, 0°C ≤ TA ≤ 70°C for SW grades, VS = 5V, 0V; VCM = 0.1V, VO = 1.4V, unless
noted. (Note 7)
LT1178I/LT1179I
MIN
TYP
MAX
LT1178SW/LT1179SW
MIN
TYP
MAX
●
●
80
80
315
345
120
130
650
800
µV
µV
●
0.6
3.0
0.8
4.5
µV/°C
Input Offset Current
●
0.07
0.7
0.06
0.50
nA
IB
Input Bias Current
●
4
8
3
7
nA
CMRR
Common Mode Rejection
Ratio
VCM = 0.05V to 3.2V I grade
VCM = 0V to 3.4V S grade
●
84
98
86
100
dB
PSRR
Power Supply Rejection
Ratio
VS = 3.0V to 12V I grade
VS = 2.5V to 12V S grade
●
86
100
88
102
dB
AVOL
Large-Signal Voltage Gain
VO = 0.05V to 4V, No Load (Note 4) ●
●
VO = 0.05V to 3.5V, RL = 50k
55
35
350
130
80
45
500
160
V/mV
V/mV
Maximum Output Voltage
Swing
Output Low, No Load
Output Low, ISINK = 100µA
Output High, No Load
Output High, 2k to GND
13
220
4.1
3.3
8
140
4.3
3.8
11
190
3.9
3.0
9
160
4.2
3.7
mV
mV
V
V
15
27
15
24
µA
SYMBOL
PARAMETER
CONDITIONS
VOS
lnput Offset Voltage
LT1178
LT1179
∆VOS/∆T
Input Offset Voltage Drift
(Note 6)
IOS
IS
Supply Current per Amplifier
●
●
●
●
●
UNITS
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.
SYMBOL
PARAMETER
CONDITIONS
VOS
lnput Offset Voltage
LT1178
LT1178S8
LT1179
(Note 6)
LT1178S8
LT1178AC/LT1179AC
MIN
TYP
MAX
LT1178C/S8/LT1179C
MIN
TYP
MAX
●
●
●
50
170
60
200
65
85
70
250
350
290
µV
µV
µV
●
●
0.5
2.2
0.6
0.6
3.0
3.5
µV/°C
µV/°C
UNITS
∆VOS/∆T
Input Offset Voltage Drift
IOS
Input Offset Current
●
0.06
0.35
0.06
0.50
nA
IB
Input Bias Current
●
3
6
3
7
nA
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
AVOL
Large-Signal Voltage Gain
VO = 0.05V to 4V, No Load (Note 4)
VO = 0.05V to 3.5V, RL = 50k
●
●
105
55
500
160
80
45
500
160
V/mV
V/mV
Maximum Output Voltage
Swing
Output Low, No Load
Output Low, ISINK = 100µA
Output High, No Load
Output High, 2k to GND
●
●
●
●
11
190
4.1
3.3
8
140
4.3
3.8
11
190
4.1
3.3
8
140
4.3
3.8
mV
mV
V
V
14
21
15
24
µA
IS
Supply Current per Amplifier
●
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LT1178/LT1179
ELECTRICAL CHARACTERISTICS VS = ±15V, TA = 25°C, unless noted.
SYMBOL
PARAMETER
VOS
Input Offset Voltage
CONDITIONS
LT1178AC/LT1179AC
MIN
TYP
MAX
LT1178I/C/S/LT1179I/C/S
MIN
TYP
MAX
80
350
100
150
160
120
480
900
1050
350
LT1178SW
LT1179SW
LT1178S8
UNITS
µV
µV
µV
µV
IOS
lnput Offset Current
0.05
0.25
0.05
0.35
nA
IB
Input Bias Current
3
5
3
6
nA
Input Voltage Range
13.5
–15.0
13.9
–15.3
13.5
–15.0
13.9
–15.3
V
V
CMRR
Common Mode Rejection Ratio
VCM = 13.5V, –15V
97
106
94
106
dB
PSRR
Power Supply Rejection Ratio
VS = 5V, 0V to ±18V
96
112
94
112
dB
AVOL
Large-Signal Voltage Gain
VO = ±10V, RL = 50k
VO = ±10V, No Load
300
600
1200
2500
250
400
1000
2500
V/mV
V/mV
VOUT
Maximum Output Voltage Swing
RL = 50k
RL = 2k
±13.0
±11.0
±14.2
±12.7
±13.0
±11.0
±14.2
±12.7
V
V
SR
Slew Rate
AV = 1
0.02
0.04
0.02
0.04
V/µs
GBW
Gain Bandwidth Product
fO ≤ 5kHz
85
kHz
IS
Supply Current per Amplifier
85
16
21
17
25
µA
The ● denotes specifications which apply over the full operating temperature range of –40°C ≤ TA ≤ 85°C for I grades,
0°C ≤ TA ≤ 70°C for SW grades, VS = ±15V, unless noted.
LT1178I/LT1179I
MIN
TYP
MAX
LT1178SW/LT1179SW
MIN
TYP
MAX
130
130
740
740
190
200
●
0.7
4.0
0.9
5.5
µV/°C
●
0.07
0.7
0.06
0.35
nA
●
4
8
3
7
nA
SYMBOL
PARAMETER
CONDITIONS
VOS
lnput Offset Voltage
LT1178
LT1179
●
●
∆VOS/∆T
Input Offset Voltage Drift
(Note 6)
IOS
Input Offset Current
IB
Input Bias Current
AVOL
Large-Signal Voltage Gain
VO = ±10V, RL = 50k
●
100
500
150
750
V/mV
CMRR
Common Mode Rejection Ratio
VCM = 13V, –14.9V
●
88
103
91
104
dB
Power Supply Rejection Ratio
VS = 5V, 0V to ±18V
●
88
109
91
110
dB
Maximum Output Voltage Swing
RL = 5k
●
±11.0
±13.5
±11.0
±13.5
V
PSRR
IS
Supply Current per Amplifier
●
19
30
18
1150
1300
28
UNITS
µV
µV
µA
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LT1178/LT1179
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating tempera-
ture range of 0°C ≤ TA ≤ 70°C, VS = ±15V, unless noted.
SYMBOL
PARAMETER
VOS
lnput Offset Voltage
CONDITIONS
LT1178AC/LT1179AC
MIN
TYP
MAX
LT1178C/S8/LT1179C
MIN
TYP
MAX
UNITS
●
●
100
480
LT1178S8
130
150
660
540
µV
µV
(Note 6)
LT1178S8
●
●
0.6
2.8
0.7
0.7
4.0
3.8
µV/°C
µV/°C
●
0.06
0.35
0.06
0.35
nA
3
6
3
7
∆VOS/∆T
Input Offset Voltage Drift
IOS
Input Offset Current
IB
Input Bias Current
AVOL
Large-Signal Voltage Gain
VO = ±10V, RL = 50k
●
200
800
150
750
V/mV
CMRR
Common Mode Rejection Ratio
VCM = 13V, –15V
●
94
104
91
104
dB
Power Supply Rejection Ratio
VS = 5V, 0V to ±18V
●
93
110
91
110
dB
Maximum Output Voltage Swing
RL = 5k
●
±11.0
±13.6
±11.0
±13.6
V
PSRR
IS
●
Supply Current per Amplifier
17
●
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 LT1179s, or 100
LT1178s, 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 = ±2.5, VO = 0V.
24
18
nA
28
µA
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 1.7V supply but with a typical offset
skew of –300µV.
Note 6: This parameter is not 100% tested.
Note 7: During testing at –40°C, the 5V power supply turn on-time is less
than 0.5 seconds.
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TYPICAL PERFOR A CE CHARACTERISTICS
Input Offset Voltage Distribution
Surface Mount Package
1500
980 LT1178N8
190 LT1178J8
190 LT1178H8
702 LT1179N
144 LT1179J
6104 OP AMPS
TESTED
VS = 5V, 0V
TA = 25°C
1000
500
0
–150 –100
800
NUMBER OF OP AMPS
NUMBER OF OP AMPS
2000
–50
0
50
OFFSET VOLTAGE (µV)
100
150
LT1178/LT1179 • TPC01
Minimum Supply Voltage
100
VS = 5V, 0V
TA = 25°C
600
262 LT1178SW
342 LT1179SW
1892 OP AMPS
TESTED
400
200
0
– 600 – 400
OFFSET VOLTAGE SHIFT (µV)
Input Offset Voltage Distribution
N, J, H Package
V – = 0V
0
85°C
–100
25°C
– 40°C
–200
–300
NON-FUNCTIONAL
– 400
–500
– 200
0
200
OFFSET VOLTAGE (µV)
400
600
LT1178/LT1179 • TPC02
0
2
3
1
POSITIVE SUPPLY VOLTAGE (V)
LT1178/LT1179 • TPC03
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LT1178/LT1179
U W
TYPICAL PERFOR A CE CHARACTERISTICS
1000
VS = 5V, 0V
SATURATION VOLTAGE (mV)
75
IOS
50
25
INPUT BIAS
CURRENT (nA)
–2.5
IB
–3.0
VS = 5V, 0V
ISINK = 1mA
ISINK = 100µA
100
ISINK = 1µA
10
NO LOAD
10k TO GROUND
1
–3.5
2k TO GROUND
– 4.0
–50
–25
50
25
0
TEMPERATURE (°C)
75
0.1
–50
100
–25
50
25
0
TEMPERATURE (°C)
CHANNEL B
10
12
0
20
80
40
60
TIME (SECONDS)
LT1178/LT1179 • TPC07
TA = 25°C
40
VS = 5V, 0V
VOLTAGE GAIN (dB)
VS = ±15V
1/f CORNER
0.5Hz
30
120
140
10
PHASE
5V, 0V
GAIN
5V, 0V
– 10
10k
1
10
100
FREQUENCY (Hz)
1k
Voltage Gain vs Load Resistance
PHASE
±15V
160
180
200
GAIN
±15V
LT1178/LT1179 • TPC10
VOLTAGE NOISE
10M
TA = 25°C
NO LOAD 100
20
0
1 10 100 1k 10k 100k 1M
FREQUENCY (Hz)
100
LT1178/LT1179 • TPC09
80
0
–20
0.001 0.01 0.1
CURRENT
NOISE
10
0.1
120
VS = ±15V, TA = 25°C
PHASE SHIFT (DEGREES)
80
300
Gain, Phase vs Frequency
30
120
100
100
VS = ± 2.5V
TA = 25°C
LT1178/LT1179 • TPC08
Voltage Gain vs Frequency
20
VS = ±15V
Noise Spectrum
CHANNEL A
CHANNEL B
60
– 20
2
0
1
TIME FROM OUTPUT SHORT TO GROUND (MINUTES)
VOLTAGE NOISE DENSITY (nV/√Hz)
CURRENT NOISE DENSITY (fA/√Hz)
NOISE VOLTAGE (0.4µV/DIV)
NOISE VOLTAGE (0.4µV/DIV)
CHANNEL A
8
4
6
TIME (SECONDS)
VS = ±2.5V
– 10
1000
VS = ±2.5V, TA = 25°C
140
0
0.01Hz to 10Hz Noise
VS = ±2.5V, TA = 25°C
2
VS = ±2.5V
LT1178/LT1179 • TPC06
0.1Hz to 10Hz Noise
0
VS = ±15V
10
– 30
100
75
VS = 5V, 0V
LT1178/LT1179 • TPC05
LT1178/LT1179 • TPC04
VOLTAGE GAIN (dB)
Short-Circuit Current
20
VOLTAGE GAIN (V/V)
INPUT OFFSET
CURRENT (pA)
100
Output Saturation vs Temperature
vs Sink Current
SHORT-CIRCUIT CURRENT (mA)
SINKING
SOURCING
Input Bias and Offset Currents vs
Temperature
1M
100k
VS = 5V, 0V, TA = 25°C
VS = 5V, 0V, TA = 85°C
220
100k
FREQUENCY (Hz)
240
1M
LT1178/LT1179 • TPC11
10k
10k
100k
1M
LOAD RESISTANCE TO GROUND (Ω)
10M
LT1178/LT1179 • TPC12
11789fb
7
LT1178/LT1179
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Large-Signal Transient Response
VS = ±15V
Capacitive Load Handling
Large-Signal Transient Response
VS = 5V, 0V
120
VS = 5V, 0V
AV = 1
80
1V/DIV
OVERSHOOT (%)
100
60
40
20
AV = 5
AV = 1
CL = 12pF
AV = 10
500µs/DIV
AV = 1
100µs/DIV
CL = 12pF
INPUT PULSE = 0V TO 3.8V
0
10
100
1000
CAPACITIVE LOAD (pF)
10,000
LT1178/LT1179 • TPC13
AV = 1
CL = 12pF
20µs/DIV
AV = 1
CL = 12pF
Common Mode Rejection Ratio vs
Frequency
–100mV
AV = 1
20µs/DIV
CL = 12pF
INPUT 50 TO 150mV
20µs/DIV
Power Supply Rejection Ratio vs
Frequency
Closed Loop Output Impedance
100
VS = ±15V
80
VS = 5V, 0V
60
40
20
10k
100
80
1
10
100
1k
FREQUENCY (Hz)
10k
100k
LT1178/LT1179 • TPC19
POSITIVE
SUPPLY
60
NEGATIVE
SUPPLY
40
20
0
0
OUTPUT IMPEDANCE (Ω)
TA = 25°C
POWER SUPPLY REJECTION RATIO (dB)
120
120
COMMON MODE REJECTION RATIO (dB)
Small-Signal Transient Response
VS = 5V, 0V
20mV/DIV
Small-Signal Transient Response
VS = ±15V
20mV/DIV
20mV/DIV
Small-Signal Transient Response
VS = ±2.5V
VS = ±2.5V + 1Vp-p SINE WAVE
TA = 25°C
0.1
1
10
100
1k
FREQUENCY (Hz)
1k
ACL = 100
100
ACL = 10
10
VS = 5V, 0V
IL = 0
TA = 25°C
1
10k
100k
LT1188/LT1189 • TPC20
ACL = 1
10
100
10k
1k
FREQUENCY (Hz)
100k
LT1178/1179 • TPC21
11789fb
8
LT1178/LT1179
U
W
U U
APPLICATIO S I FOR ATIO
Please see the LT1078/LT1079 data sheet for applications
information. All comments relating to specifications, single
supply operation and phase reversal protection are
directly applicable to the LT1178/LT1179.
Micropower 100Hz to 1MHz V-to-F Converter
7V TO 10V
1.5M
VIN
0V TO 5V
100k
220k*
50k
1MHz
TRIM
1N4148
100Hz
TRIM
240k
TYPICAL
+
100Ω
+
NC
A2
1/2 LT1178
+
1µF
10k
LT1004– 2.5
–
1µF
12k
+
47k
A1
1/2 LT1178
–
Q7
2N3904
Q8
2N3906
VDD
0.01µF
2k
CD4024
CLK
74C14
0.33µF
RESET
Q7
VSS
10M
3pF
FOUT
2µF
LTC201
500pF
POLYSTYRENE
S1
V+
IN1
S3
D1
D3
D2
D4
S2
S4
LINEARITY IS 0.02%
QUIESCENT CURRENT IS 90µA
SUPPLY CURRENT IS 360µA AT 1MHz
DRIFT ≈ 50ppm/°C
*TRW MTR/5 + 120ppm/°C
IN3
IN4
0.022µF
V–
IN2
GND
LT1178/LT1179 • AI01
W
W
SI PLIFIED SCHE ATIC
10k
10k
1/2 LT1178
1/4 LT1179
2.2k
5.6k
1.3k
V+
33k
6.4k
Q54
1
Q6
Q16
Q14
Q15
Q32
Q24
Q37
Q29
C1
50pF
Q4
Q46
1
C4
4pF
4
+ IN
Q27
Q40
Q35
2.9k
Q41
V+
Q26
30Ω
OUT
Q21
600Ω
3k
C5
2.5pF
1
Q1
V–
Q25
Q12
Q11
Q30
3
8.6k
600Ω
Q52
Q47
Q3
– IN
12.5k
Q53
2
1
Q5
11.5k
Q44
150k
Q31
Q28
Q2
Q18
V+
Q22
C3
40pF
J1
Q36
Q33
Q48
Q19
Q50
Q39
Q9
C2
175pF
6.2k
Q8
6.2k
Q49
Q23
Q10 Q17
Q7
Q42
9.1k
V+
Q45
Q20
2A
10k
Q34
Q38
3k
30Ω
Q51
Q55
700k
Q43
A
2A
5.35k
700k
V–
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9
LT1178/LT1179
U
PACKAGE DESCRIPTIO
H Package
8-Lead TO-5 Metal Can (.230 Inch PCD)
(Reference LTC DWG # 05-08-1321)
.016 – .021**
(0.406 – 0.533)
.027 – .045
(0.686 – 1.143)
.335 – .370
(8.509 – 9.398)
DIA
.305 – .335
(7.747 – 8.509)
.040
(1.016)
MAX
45°TYP
.050
(1.270)
MAX
SEATING
PLANE
PIN 1
.028 – .034
(0.711 – 0.864)
.230
(5.842)
TYP
.165 – .185
(4.191 – 4.699)
GAUGE
PLANE
.010 – .045*
(0.254 – 1.143)
REFERENCE
PLANE
.500 – .750
(12.700 – 19.050)
.110 – .160
(2.794 – 4.064)
INSULATING
STANDOFF
*LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE
AND THE SEATING PLANE
.016 – .024
**FOR SOLDER DIP LEAD FINISH, LEAD DIAMETER IS
(0.406 – 0.610) H8 (TO-5) 0.230 PCD 0801
J8 Package
8-Lead CERDIP (Narrow .300 Inch, Hermetic)
(Reference LTC DWG # 05-08-1110)
.300 BSC
(7.62 BSC)
.008 – .018
(0.203 – 0.457)
.200
(5.080)
MAX
CORNER LEADS OPTION
(4 PLCS)
0° – 15°
.015 – .060
(0.381 – 1.524)
.023 – .045
(0.584 – 1.143)
HALF LEAD
OPTION
.045 – .068
(1.143 – 1.650)
FULL LEAD
OPTION
NOTE: LEAD DIMENSIONS APPLY TO SOLDER
DIP/PLATE OR TIN PLATE LEADS
.405
(10.287)
MAX
.005
(0.127)
MIN
8
.014 – .026
(0.360 – 0.660)
5
.025
(0.635)
RAD TYP
.220 – .310
(5.588 – 7.874)
1
.045 – .065
(1.143 – 1.651)
6
7
2
3
4
.125
3.175
MIN
.100
(2.54)
BSC
J8 0801
J Package
14-Lead CERDIP (Narrow .300 Inch, Hermetic)
(Reference LTC DWG # 05-08-1110)
.200
(5.080)
MAX
.300 BSC
(7.62 BSC)
.015 – .060
(0.381 – 1.524)
.008 – .018
(0.203 – 0.457)
NOTE: LEAD DIMENSIONS APPLY
TO SOLDER DIP/PLATE OR TIN
PLATE LEADS
.005
(0.127)
MIN
.785
(19.939)
MAX
14
13
12
11
10
9
8
0° – 15°
.045 – .065
(1.143 – 1.651)
.014 – .026
(0.360 – 0.660)
.100
(2.54)
BSC
.025
(0.635)
.125 RAD TYP
(3.175)
MIN
.220 – .310
(5.588 – 7.874)
1
2
3
4
5
6
7
J14 0801
OBSOLETE PACKAGES
11789fb
10
LT1178/LT1179
U
PACKAGE DESCRIPTIO
N8 Package
8-Lead PDIP (Narrow .300 Inch)
(Reference LTC DWG # 05-08-1510)
.400*
(10.160)
MAX
8
7
6
5
1
2
3
4
.255 ± .015*
(6.477 ± 0.381)
.300 – .325
(7.620 – 8.255)
.065
(1.651)
TYP
.008 – .015
(0.203 – 0.381)
+.035
.325 –.015
(
8.255
+0.889
–0.381
.130 ± .005
(3.302 ± 0.127)
.045 – .065
(1.143 – 1.651)
.120
(3.048) .020
MIN
(0.508)
MIN
.018 ± .003
(0.457 ± 0.076)
.100
(2.54)
BSC
)
N8 1002
NOTE:
1. DIMENSIONS ARE
INCHES
MILLIMETERS
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm)
N Package
14-Lead PDIP (Narrow .300 Inch)
(Reference LTC DWG # 05-08-1510)
.770*
(19.558)
MAX
14
13
12
11
10
9
8
1
2
3
4
5
6
7
.255 ± .015*
(6.477 ± 0.381)
.300 – .325
(7.620 – 8.255)
.045 – .065
(1.143 – 1.651)
.130 ± .005
(3.302 ± 0.127)
.020
(0.508)
MIN
.065
(1.651)
TYP
.008 – .015
(0.203 – 0.381)
+.035
.325 –.015
(
8.255
+0.889
–0.381
NOTE:
1. DIMENSIONS ARE
)
.120
(3.048)
MIN
.005
(0.125) .100
MIN (2.54)
BSC
.018 ± .003
(0.457 ± 0.076)
INCHES
MILLIMETERS
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm)
N14 1002
11789fb
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.
11
LT1178/LT1179
U
PACKAGE DESCRIPTIO
S8 Package
8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610)
.189 – .197
(4.801 – 5.004)
NOTE 3
.045 ±.005
.050 BSC
7
8
5
6
N
N
.245
MIN
.160 ±.005
1
.030 ±.005
TYP
.150 – .157
(3.810 – 3.988)
NOTE 3
.228 – .244
(5.791 – 6.197)
2
3
N/2
N/2
RECOMMENDED SOLDER PAD LAYOUT
1
.010 – .020
× 45°
(0.254 – 0.508)
3
2
4
.053 – .069
(1.346 – 1.752)
.008 – .010
(0.203 – 0.254)
.004 – .010
(0.101 – 0.254)
0°– 8° TYP
.016 – .050
(0.406 – 1.270)
.050
(1.270)
BSC
.014 – .019
(0.355 – 0.483)
TYP
INCHES
(MILLIMETERS)
2. DRAWING NOT TO SCALE
3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
NOTE:
1. DIMENSIONS IN
SO8 0502
SW Package
16-Lead Plastic Small Outline (Wide .300 Inch)
(Reference LTC DWG # 05-08-1620)
.050 BSC .045 ±.005
.030 ±.005
TYP
.398 – .413
(10.109 – 10.490)
NOTE 4
16
N
15
14
13
12
11 10
9
N
.325 ±.005
.420
MIN
.394 – .419
(10.007 – 10.643)
NOTE 3
1
2
3
N/2
N/2
RECOMMENDED SOLDER PAD LAYOUT
1
.005
(0.127)
RAD MIN
.009 – .013
(0.229 – 0.330)
.291 – .299
(7.391 – 7.595)
NOTE 4
.010 – .029 × 45°
(0.254 – 0.737)
2
3
4
5
6
.093 – .104
(2.362 – 2.642)
7
8
.037 – .045
(0.940 – 1.143)
0° – 8° TYP
.050
(1.270)
BSC
NOTE 3
.016 – .050
(0.406 – 1.270)
NOTE:
1. DIMENSIONS IN
.004 – .012
(0.102 – 0.305)
.014 – .019
(0.356 – 0.482)
TYP
INCHES
(MILLIMETERS)
2. DRAWING NOT TO SCALE
3. 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
4. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
S16 (WIDE) 0502
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12
Linear Technology Corporation
LW/TP 1102 1K REV B • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507
●
www.linear.com
 LINEAR TECHNOLOGY CORPORATION 1991