LT1178ACN8 [Linear]
LT1178 - 17µA Max, Dual, Single Supply, Precision Op Amps; Package: PDIP; Pins: 8; Temperature Range: 0°C to 70°C;型号: | LT1178ACN8 |
厂家: | Linear |
描述: | LT1178 - 17µA Max, Dual, Single Supply, Precision Op Amps; Package: PDIP; Pins: 8; Temperature Range: 0°C to 70°C 放大器 光电二极管 |
文件: | 总12页 (文件大小:234K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
LT1178/LT1179
17µA Max, Dual and Quad,
Single Supply, Precision Op Amps
U
FEATURES
DESCRIPTIO
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.
■
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
The extremely low supply current is combined with true
precision specifications: offset voltage is 30µV, offset
currentis50pA. Bothoffsetparametershavelowdriftwith
temperature. The 1.5pAp-p current noise and picoampere
offset current permit the use of megaohm level source
resistorswithoutintroducingseriouserrors.Voltagenoise,
■
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
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.
U
APPLICATIO S
■
Battery or Solar Powered Systems
Portable Instrumentation
Remote Sensor Amplifier
Satellite Circuitry
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,lowervoltagenoiseandbetteroutputdrivecapability.
■
Micropower Sample-and-Hold
Thermocouple Amplifier
Micropower Filters
■
■
, LTC and LT are registered trademarks of Linear Technology Corporation.
U
TYPICAL APPLICATIO
Self-Buffered, Dual Output, Micropower Reference
Supply Current vs Temperature
20
2
–
V
= ±15V
18
16
S
1
1.2365V
OUTPUT
1/2 LT1178
3
+
4V TO 9V
8
4
5
6
V
= 5V, 0V
+
S
7
14
2.470V
OUTPUT
250k*
1/2 LT1178
V
= ±1.5V
S
–
0.1µF
12
10
0.1µF
LT1004-1.2
2M
1M*
1M*
–50 –25
25
50
75
100
0
* = 0.1% FILM RESISTORS
TEMPERATURE (°C)
TOTAL BATTERY CURRENT = 28µA
OUTPUT ACCURACY = ±0.4% MAX
TEMPERATURE COEFFICIENT = 20ppm/°C
LT1178/LT1179 • TA02
+
LOAD REGULATION = 25ppm/mA, I ≤ 5mA, V ≥ 5V
LINE REGULATION = 10ppm/V
L
LT1178/LT1179 • TA01
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1
LT1178/LT1179
W W
U W
ABSOLUTE AXI U RATI GS (Note 1)
Supply Voltage ...................................................... ±22V Operating Temperature Range
Differential Input Voltage ....................................... ±30V
Input Voltage ...............Equal to Positive Supply Voltage
LT1178I/LT1179I.................................. –40°C to 85°C
LT1178C/LT1178S/LT1179C/LT1179S .......0°C to 70°C
Input Voltage ............5V Below Negative Supply Voltage Storage Temperature Range ................ –65°C to 150°C
Output Short-Circuit Duration.......................... Indefinite Lead Temperature (Soldering, 10 sec.)................. 300°C
U W
U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
ORDER PART
ORDER PART
NUMBER
ORDER PART
NUMBER
TOP VIEW
+
V
TOP VIEW
+
V
NUMBER
OUT A
–IN A
+IN A
1
2
3
4
OUT A
1
8
7
6
OUT B
7
8
+IN A
–IN A
OUT B
–IN B
+IN B
1
2
3
4
8
7
6
5
-
-
A
A
B
A
+
+
–
LT1178ACH
LT1178CH
LT1178ACN8
LT1178CN8
LT1178IN8
LT1178S8
V
OUT A
-
+
–IN A
2
–IN B
+
+
–
–
5
B
–
+
V
5
+IN B
–IN B
V
+
B
-
3
IN A
+ IN B
OUT B
4
V
N PACKAGE
8-LEAD PDIP
–
(CASE)
H PACKAGE
8-LEAD TO-5 METAL CAN
PART
MARKING
S8 PACKAGE
8-LEAD PLASTIC SO
T
= 100°C, θ = 150°C/W
JMAX
JA
J PACKAGE 8-LEAD CERDIP
T
= 150°C, θ = 200°C/W
JA
JMAX
LT1178ACJ8
LT1178CJ8
1178
OBSOLETE PACKAGE
Consider the N8 or S8 Package for Alternate Source
Not Recommended. Use LT1178S8 for
New Designs.
TOP VIEW
ORDER PART
NUMBER
ORDER PART
NUMBER
1
2
3
4
5
6
7
14 OUT D
13 –IN D
OUT A
–IN A
+IN A
TOP VIEW
TOP VIEW
16 OUT D
-
-
1
2
3
4
5
6
7
8
16 NC
OUT A
–IN A
+IN A
1
2
3
4
5
6
7
8
NC
NC
A
D
C
+
+
12 +IN D
–
LT1179ACN
LT1179CN
LT1179IN
LT1178SW
LT1179SW
15
14
13
12
11
10
9
15
14
13
12
11
10
9
–IN D
+IN D
NC
+
11
V
V
+
OUT A
–IN A
+IN A
V
10 +IN C
+IN B
–IN B
OUT B
+
B
+
-
+
–
V
V
OUT B
–IN B
+IN B
NC
-
LT1178
LT1179
9
8
–IN C
+IN B
–IN B
OUT B
NC
+IN C
–IN C
OUT C
NC
OUT C
–
V
N PACKAGE
14-LEAD PDIP
= 110°C, θ = 130°C/W
JA
NC
NC
NC
T
JMAX
SW PACKAGE
SW PACKAGE
J PACKAGE 14-LEAD CERAMIC DIP
16-LEAD PLASTIC SO WIDE
16-LEAD PLASTIC SO WIDE
LT1179ACJ
LT1179CJ
T
= 150°C, θ = 90°C/W
JA
T
= 150°C, θ = 90°C/W
JA
JMAX
JMAX
OBSOLETE PACKAGE
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
LT1178I/C/S/LT1179I/C/S
SYMBOL PARAMETER
CONDITIONS (NOTE 2)
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
VOS
Input Offset Voltage
LT1178
LT1179
LT1178SW
LT1179SW
LT1178S8
30
35
70
100
40
40
80
90
60
120
150
450
600
180
µV
µV
µV
µV
µV
∆VOS
∆Time
Long Term Input Offset
Voltage Stability
0.5
0.6
µV/Mo
IOS
Input Offset Current
0.05
0.25
0.05
0.35
nA
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2
LT1178/LT1179
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
3
MAX
MIN
TYP
3
MAX
UNITS
nA
IB
Input Bias Current
5
6
en
Input Noise Voltage
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
in
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)
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
PSRR
AVOL
Common Mode Rejection Ratio VCM = 0V to 3.5V
Power Supply Rejection Ratio VS = 2.2V to 12V
93
94
103
104
700
90
92
102
104
700
dB
dB
Large Signal Voltage Gain
VO = 0.03V to 4V, No Load
(Note 4)
140
110
V/mV
VO = 0.03V to 3.5V, RL = 50k
80
200
70
200
V/mV
Maximum Output Voltage
Swing
Output Low, No Load
Output Low, 2k to GND
Output Low, ISINK = 100µA
Output High, No Load
Output High 2k to GND
6.5
0.2
120
4.4
3.8
9
0.6
160
6.5
0.2
120
4.4
3.8
9
0.6
160
mV
mV
mV
V
4.2
3.5
4.2
3.5
V
SR
Slew Rate
AV = 1, CL = 10pF (Note 4)
0.013
0.025
60
0.013
0.025
60
V/µs
GBW
IS
Gain Bandwidth Product
fO ≤ 5kHz
kHz
Supply Current
per Amplifier
13
12
18
17
14
13
21
20
µA
µA
VS = ±1.5V, VO = 0V
∆VIN = 3V, RL = 10k
(Note 5)
Channel Separation
130
2.0
130
2.0
dB
V
Minimum Supply Voltage
2.2
2.2
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3
LT1178/LT1179
ELECTRICAL CHARACTERISTICS
noted. (Note 7)
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
LT1178I/LT1179I
LT1178SW/LT1179SW
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX MIN
TYP
MAX UNITS
VOS
lnput Offset Voltage
LT1178
LT1179
■
■
80
80
315
345
120
130
650
800
µV
µV
∆VOS/∆T
IOS
Input Offset Voltage Drift
Input Offset Current
Input Bias Current
(Note 6)
■
■
■
■
0.6
0.07
4
3.0
0.7
8
0.8
0.06
3
4.5
0.50
7
µV/°C
nA
IB
nA
CMRR
Common Mode Rejection
Ratio
VCM = 0.05V to 3.2V I grade
VCM = 0V to 3.4V S grade
84
86
98
86
88
100
dB
PSRR
AVOL
Power Supply Rejection
Ratio
VS = 3.0V to 12V I grade
VS = 2.5V to 12V S grade
■
100
102
dB
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
■
■
■
■
9
13
220
8
11
190
mV
mV
V
160
4.2
3.7
140
4.3
3.8
3.9
3.0
4.1
3.3
V
IS
Supply Current per Amplifier
■
15
27
15
24
µA
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
lnput Offset Voltage
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX UNITS
V
LT1178
LT1178S8
LT1179
■
■
■
50
170
65
85
70
250
350
290
µV
µV
µV
OS
60
200
2.2
∆V /∆T Input Offset Voltage Drift
OS
(Note 6)
LT1178S8
■
■
0.5
0.6
0.6
3.0
3.5
µV/°C
µV/°C
I
I
Input Offset Current
■
■
■
■
0.06
3
0.35
6
0.06
3
0.50
7
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
90
90
101
102
86
88
100
102
CM
V = 2.5V to 12V
S
A
V = 0.05V to 4V, No Load (Note 4)
V = 0.05V to 3.5V, R = 50k
■
■
105
55
500
160
80
45
500
160
V/mV
V/mV
VOL
O
O
L
Maximum Output Voltage
Swing
Output Low, No Load
■
■
■
■
8
11
190
8
11
190
mV
mV
V
Output Low, I
= 100µA
140
4.3
3.8
140
4.3
3.8
SINK
Output High, No Load
Output High, 2k to GND
4.1
3.3
4.1
3.3
V
I
Supply Current per Amplifier
■
14
21
15
24
µA
S
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4
LT1178/LT1179
ELECTRICAL CHARACTERISTICS V = ±15V, T = 25°C, unless noted.
S
A
LT1178AC/LT1179AC
LT1178I/C/S/LT1179I/C/S
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
V
Input Offset Voltage
80
350
100
150
160
120
480
900
1050
350
µV
µV
µV
µV
OS
LT1178SW
LT1179SW
LT1178S8
I
I
lnput Offset Current
Input Bias Current
Input Voltage Range
0.05
3
0.25
5
0.05
3
0.35
6
nA
nA
OS
B
13.5
–15.0
13.9
–15.3
13.5
–15.0
13.9
–15.3
V
V
CMRR
PSRR
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
V
= 13.5V, –15V
97
96
106
112
94
94
106
112
dB
dB
CM
V = 5V, 0V to ±18V
S
A
V = ±10V, R = 50k
V = ±10V, No Load
300
600
1200
2500
250
400
1000
2500
V/mV
V/mV
VOL
O
L
O
V
Maximum Output Voltage Swing
R = 50k
R = 2k
L
±13.0
±11.0
±14.2
±12.7
±13.0
±11.0
±14.2
±12.7
V
V
OUT
L
SR
Slew Rate
A = 1
0.02
0.04
85
0.02
0.04
85
V/µs
kHz
µA
V
GBW
Gain Bandwidth Product
Supply Current per Amplifier
f ≤ 5kHz
O
I
16
21
17
25
S
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
LT1178SW/LT1179SW
SYMBOL PARAMETER
lnput Offset Voltage
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX UNITS
V
LT1178
LT1179
■
■
130
130
740
740
190
200
1150
1300
µV
µV
OS
∆V /∆T Input Offset Voltage Drift
(Note 6)
■
■
■
■
■
■
■
■
0.7
0.07
4
4.0
0.7
8
0.9
0.06
3
5.5
0.35
7
µV/°C
nA
OS
I
I
Input Offset Current
OS
B
Input Bias Current
nA
A
Large-Signal Voltage Gain
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Maximum Output Voltage Swing
Supply Current per Amplifier
V = ±10V, R = 50k
O
100
88
500
103
109
±13.5
19
150
91
750
104
110
V/mV
dB
VOL
L
CMRR
PSRR
V
= 13V, –14.9V
CM
V = 5V, 0V to ±18V
S
88
91
dB
R = 5k
L
±11.0
±11.0 ±13.5
V
I
30
18
28
µA
S
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5
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.
LT1178AC/LT1179AC
LT1178C/S8/LT1179C
SYMBOL PARAMETER
lnput Offset Voltage
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX UNITS
V
■
■
100
480
130
150
660
540
µV
µV
OS
LT1178S8
∆V /∆T Input Offset Voltage Drift
OS
(Note 6)
LT1178S8
■
■
0.6
2.8
0.7
0.7
4.0
3.8
µV/°C
µV/°C
I
I
Input Offset Current
■
■
■
■
■
■
■
0.06
3
0.35
6
0.06
3
0.35
7
nA
nA
OS
B
Input Bias Current
A
Large-Signal Voltage Gain
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Maximum Output Voltage Swing
Supply Current per Amplifier
V = ±10V, R = 50k
200
94
800
104
110
±13.6
17
150
91
750
104
110
V/mV
dB
VOL
O
L
CMRR
PSRR
V
= 13V, –15V
CM
V = 5V, 0V to ±18V
S
93
91
dB
R = 5k
L
±11.0
±11.0 ±13.6
V
I
24
18
28
µA
S
Note 1: Absolute Maximum Ratings are those values beyond which the life
Note 4: This parameter is guaranteed by design and is not tested.
of a device may be impaired.
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
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
than 0.5 seconds.
parameters are tested with V = ±2.5, V = 0V.
S
O
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Input Offset Voltage Distribution
N, J, H Package
Input Offset Voltage Distribution
Surface Mount Package
Minimum Supply Voltage
100
0
2000
1500
1000
500
800
600
400
200
–
V
= 0V
980 LT1178N8
190 LT1178J8
190 LT1178H8
702 LT1179N
144 LT1179J
6104 OP AMPS
TESTED
V
T
= 5V, 0V
= 25°C
V
T
= 5V, 0V
= 25°C
S
A
S
A
262 LT1178SW
342 LT1179SW
1892 OP AMPS
TESTED
85°C
–100
–200
25°C
–40°C
–300
–400
–500
NON-FUNCTIONAL
0
0
2
3
0
1
–150 –100 –50
0
50
100
150
–600 –400 –200
0
200
400
600
OFFSET VOLTAGE (µV)
OFFSET VOLTAGE (µV)
POSITIVE SUPPLY VOLTAGE (V)
LT1178/LT1179 • TPC03
LT1178/LT1179 • TPC01
LT1178/LT1179 • TPC02
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6
LT1178/LT1179
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Input Bias and Offset Currents vs
Temperature
Output Saturation vs Temperature
vs Sink Current
Short-Circuit Current
100
75
1000
100
10
20
10
V
V
= 5V, 0V
V
= 5V, 0V
V = 5V, 0V
S
S
S
I
I
= 1mA
SINK
= ±15V
S
= 100µA
SINK
I
OS
50
V
= ±2.5V
= ±2.5V
S
S
0
I
= 1µA
SINK
25
V
–2.5
–3.0
–3.5
–4.0
NO LOAD
–10
–20
–30
I
B
10k TO GROUND
1
V
= ±15V
2k TO GROUND
S
0.1
50
TEMPERATURE (°C)
100
–50 –25
0
25
75
50
TEMPERATURE (°C)
100
–50
–25
0
25
75
0
1
2
TIME FROM OUTPUT SHORT TO GROUND (MINUTES)
LT1178/LT1179 • TPC05
LT1178/LT1179 • TPC04
LT1178/LT1179 • TPC06
0.1Hz to 10Hz Noise
0.01Hz to 10Hz Noise
Noise Spectrum
1000
300
100
30
V
= ±2.5V, T = 25°C
A
V
= ±2.5V, T = 25°C
V
T
= ±2.5V
= 25°C
S
S
A
S
A
CURRENT
NOISE
CHANNEL A
CHANNEL A
VOLTAGE NOISE
1/f CORNER
0.5Hz
CHANNEL B
CHANNEL B
60
10
0.1
1
10
FREQUENCY (Hz)
100
1k
8
10
80
100
0
2
4
6
12
0
20
40
120
TIME (SECONDS)
TIME (SECONDS)
LT1178/LT1179 • TPC09
LT1178/LT1179 • TPC07
LT1178/LT1179 • TPC08
Voltage Gain vs Frequency
Gain, Phase vs Frequency
Voltage Gain vs Load Resistance
10M
30
20
140
120
100
80
80
T
= 25°C
T
= 25°C
A
A
NO LOAD
100
120
140
160
180
200
220
240
V
= ±15V, T = 25°C
S
S
A
PHASE
±15V
1M
100k
10k
10
V
= ±15V
60
S
PHASE
5V, 0V
V
= 5V, 0V, T = 25°C
A
40
V
= 5V, 0V
S
V
= 5V, 0V, T = 85°C
GAIN
5V, 0V
S
A
0
20
GAIN
±15V
0
–10
–20
10 100
0.001 0.01 0.1
1
1k 10k 100k 1M
10k
100k
1M
10k
100k
1M
10M
FREQUENCY (Hz)
LOAD RESISTANCE TO GROUND (Ω)
FREQUENCY (Hz)
LT1178/LT1179 • TPC10
LT1178/LT1179 • TPC11
LT1178/LT1179 • TPC12
11789fb
7
LT1178/LT1179
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Large-Signal Transient Response
VS = ±15V
Large-Signal Transient Response
VS = 5V, 0V
Capacitive Load Handling
120
100
80
V
= 5V, 0V
S
A
= 1
V
60
40
20
AV = 1
500µs/DIV
AV = 1
CL = 12pF
100µs/DIV
A
= 5
V
A
= 10
C
L = 12pF
V
INPUT PULSE = 0V TO 3.8V
0
10
100
1000
10,000
CAPACITIVE LOAD (pF)
LT1178/LT1179 • TPC13
Small-Signal Transient Response
VS = ±2.5V
Small-Signal Transient Response
VS = ±15V
Small-Signal Transient Response
VS = 5V, 0V
AV = 1
CL = 12pF
20µs/DIV
AV = 1
CL = 12pF
INPUT 50 TO 150mV
20µs/DIV
AV = 1
CL = 12pF
20µs/DIV
Common Mode Rejection Ratio vs
Frequency
Power Supply Rejection Ratio vs
Frequency
Closed Loop Output Impedance
120
100
80
60
40
20
0
120
100
T
= 25°C
A
10k
V
= ±15V
S
A
= 100
= 10
CL
1k
100
10
80
60
POSITIVE
SUPPLY
V
= 5V, 0V
S
A
= 1
CL
A
CL
NEGATIVE
SUPPLY
40
20
0
V
I
= 5V, 0V
= 0
= 25°C
S
L
V
T
= ±2.5V + 1Vp-p SINE WAVE
= 25°C
S
A
1
T
A
0.1
10
100
1k
10k 100k
10
1
100
1k
FREQUENCY (Hz)
10k
100k
1
10
100
1k
10k
100k
FREQUENCY (Hz)
FREQUENCY (Hz)
LT1178/LT1179 • TPC19
LT1188/LT1189 • TPC20
LT1178/1179 • TPC21
11789fb
8
LT1178/LT1179
W U U
APPLICATIO S I FOR ATIO
U
Please see the LT1078/LT1079 data sheet for applications
information.Allcommentsrelatingtospecifications,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
100k
1.5M
V
IN
0V TO 5V
10k
220k*
100Hz
TRIM
240k
TYPICAL
+
–
1N4148
100Ω
1µF
A2
1/2 LT1178
50k
1MHz
TRIM
+
+
LT1004–2.5
NC
1µF
12k
Q7
2N3904
+
47k
A1
Q8
2N3906
1/2 LT1178
V
DD
–
0.01µF
2k
CLK
RESET
CD4024
Q7
74C14
10M
V
SS
0.33µF
3pF
F
OUT
2µF
LTC201
+
V
IN1
LINEARITY IS 0.02%
QUIESCENT CURRENT IS 90µA
SUPPLY CURRENT IS 360µA AT 1MHz
DRIFT ≈ 50ppm/°C
*TRW MTR/5 + 120ppm/°C
500pF
POLYSTYRENE
S1
S3
IN3
IN4
D1
D2
D3
D4
S4
0.022µF
S2
–
V
IN2
GND
LT1178/LT1179 • AI01
W
W
1/2 LT1178
1/4 LT1179
SI PLIFIED SCHE ATIC
+
V
10k
10k
2.2k
5.6k
1.3k
6.4k
33k
11.5k
12.5k
Q54
1
Q53
2
1
Q6
Q16
Q14
Q24
Q15
Q32
Q5
Q52
Q47
Q37
Q46
–
Q29
Q3
Q30
3
C1
50pF
V
1
Q4
3k
Q40
Q25
8.6k
Q35
Q41
+
V
Q12
4
C4
4pF
Q26
2.9k
30Ω
Q11
Q44
C5
2.5pF
1
Q27
Q1
Q21
600Ω
600Ω
150k
OUT
IN
IN
–
+
Q31
J1
C3
40pF
Q28
Q36
Q18
Q33
Q2
Q22
Q48
+
V
Q19
Q42
Q49
Q50
Q39
Q23
Q9
Q10 Q17
+
9.1k
V
700k
Q7
Q8
Q45
Q51
Q55
C2
175pF
Q20
2A
10k
Q43
Q34
Q38
A
2A
3k
5.35k
6.2k
6.2k
30Ω
700k
–
V
11789fb
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
45°TYP
PIN 1
.028 – .034
(0.711 – 0.864)
.305 – .335
(7.747 – 8.509)
.040
.230
.050
(1.270)
MAX
(5.842)
(1.016)
MAX
.165 – .185
(4.191 – 4.699)
TYP
REFERENCE
PLANE
.110 – .160
SEATING
PLANE
GAUGE
PLANE
(2.794 – 4.064)
INSULATING
STANDOFF
.500 – .750
(12.700 – 19.050)
.010 – .045*
(0.254 – 1.143)
*LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE
AND THE SEATING PLANE
.016 – .024
**FOR SOLDER DIP LEAD FINISH, LEAD DIAMETER IS
H8 (TO-5) 0.230 PCD 0801
(0.406 – 0.610)
J8 Package
8-Lead CERDIP (Narrow .300 Inch, Hermetic)
(Reference LTC DWG # 05-08-1110)
.405
(10.287)
MAX
.200
(5.080)
MAX
.005
(0.127)
MIN
.300 BSC
(7.62 BSC)
CORNER LEADS OPTION
(4 PLCS)
6
5
4
8
7
.015 – .060
(0.381 – 1.524)
.023 – .045
(0.584 – 1.143)
HALF LEAD
OPTION
.025
(0.635)
RAD TYP
.220 – .310
(5.588 – 7.874)
.008 – .018
(0.203 – 0.457)
0° – 15°
.045 – .068
(1.143 – 1.650)
FULL LEAD
OPTION
1
2
3
.045 – .065
(1.143 – 1.651)
.125
3.175
MIN
NOTE: LEAD DIMENSIONS APPLY TO SOLDER
DIP/PLATE OR TIN PLATE LEADS
.014 – .026
(0.360 – 0.660)
.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)
.785
(19.939)
MAX
.015 – .060
(0.381 – 1.524)
.005
(0.127)
MIN
14
13
12
11
10
9
8
.008 – .018
(0.203 – 0.457)
0° – 15°
.220 – .310
(5.588 – 7.874)
.025
(0.635)
RAD TYP
.045 – .065
(1.143 – 1.651)
.100
(2.54)
BSC
.125
(3.175)
MIN
NOTE: LEAD DIMENSIONS APPLY
TO SOLDER DIP/PLATE OR TIN
PLATE LEADS
.014 – .026
2
3
4
5
6
1
7
(0.360 – 0.660)
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
4
.255 ± .015*
(6.477 ± 0.381)
1
2
3
.130 ± .005
.300 – .325
.045 – .065
(3.302 ± 0.127)
(1.143 – 1.651)
(7.620 – 8.255)
.065
(1.651)
TYP
.008 – .015
(0.203 – 0.381)
.120
.020
(0.508)
MIN
(3.048)
MIN
+.035
.325
–.015
.018 ± .003
(0.457 ± 0.076)
.100
(2.54)
BSC
+0.889
8.255
(
)
N8 1002
–0.381
NOTE:
INCHES
1. DIMENSIONS ARE
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
7
.255 ± .015*
(6.477 ± 0.381)
1
2
3
5
6
4
.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
.005
(0.125)
MIN
–.015
.120
(3.048)
MIN
.018 ± .003
(0.457 ± 0.076)
.100
(2.54)
BSC
+0.889
8.255
(
)
–0.381
NOTE:
INCHES
MILLIMETERS
N14 1002
1. DIMENSIONS ARE
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm)
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 represen-
tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.
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
5
8
6
N
N
.245
MIN
.160 ±.005
.150 – .157
(3.810 – 3.988)
NOTE 3
.228 – .244
(5.791 – 6.197)
1
2
3
N/2
N/2
4
.030 ±.005
TYP
RECOMMENDED SOLDER PAD LAYOUT
1
2
3
.010 – .020
(0.254 – 0.508)
× 45°
.053 – .069
(1.346 – 1.752)
.004 – .010
(0.101 – 0.254)
.008 – .010
(0.203 – 0.254)
0°– 8° TYP
.016 – .050
(0.406 – 1.270)
.050
(1.270)
BSC
.014 – .019
(0.355 – 0.483)
TYP
NOTE:
INCHES
1. DIMENSIONS IN
(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)
SO8 0502
SW Package
16-Lead Plastic Small Outline (Wide .300 Inch)
(Reference LTC DWG # 05-08-1620)
.050 BSC .045 ±.005
.030 ±.005
.398 – .413
(10.109 – 10.490)
NOTE 4
TYP
15 14
12
10
9
N
16
N
13
11
.325 ±.005
.420
MIN
.394 – .419
(10.007 – 10.643)
NOTE 3
N/2
8
1
2
3
N/2
RECOMMENDED SOLDER PAD LAYOUT
2
3
5
7
1
4
6
.291 – .299
(7.391 – 7.595)
NOTE 4
.037 – .045
(0.940 – 1.143)
.093 – .104
(2.362 – 2.642)
.010 – .029
× 45°
(0.254 – 0.737)
.005
(0.127)
RAD MIN
0° – 8° TYP
.050
(1.270)
BSC
.004 – .012
.009 – .013
(0.102 – 0.305)
NOTE 3
(0.229 – 0.330)
.014 – .019
.016 – .050
(0.356 – 0.482)
TYP
(0.406 – 1.270)
NOTE:
1. DIMENSIONS IN
INCHES
(MILLIMETERS)
S16 (WIDE) 0502
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)
11789fb
LW/TP 1102 1K REV B • PRINTED IN USA
12 LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
■
■
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
LINEAR TECHNOLOGY CORPORATION 1991
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