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PDF LT1462CN8 Data sheet ( Hoja de datos )
| Número de pieza | LT1462CN8 | |
| Descripción | Dual/Quad Micropower/ 260uW C-Load Picoampere Bias Current JFET Input Op Amps | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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LT1462/LT1463
Dual/Quad Micropower,
260µW C-Load Picoampere
Bias Current JFET Input Op Amps
FEATURES
s Input Bias Current:
2pA Max (LT1462A)
20pA Max (LT1462, LT1463)
s Supply Current per Amplifier: 45µA Max
s Unity-Gain Stable for C-LoadTM Up to 10nF
s Input Common Mode Range Includes Positive Rail
s Guaranteed Specs with ±5V, ±15V Supplies
s Gain Bandwidth Product: 175kHz Typ
s Slew Rate: 0.13V/µs Typ
s Guaranteed Matching Specifications
s Standard Pinout: SO-8, SO-14 Package
U
APPLICATIONS
s Battery-Powered Systems
s Photocurrent Amplifiers
s Low Frequency, Micropower Active Filters
s Low Droop Track-and-Hold Circuits
DESCRIPTION
The LT ®1462 (dual) and LT1463 (quad) are the first
micropower op amps (45µA max per amp) to offer
picoampere input bias currents (1pA typ) and unity gain
stability for capacitive loads up to 10nF. The output can
swing a 10k load to within 1.5V of either supply, just like
op amps that require an order of magnitude more supply
current. This unique combination of performance makes
the LT1462/LT1463 ideal over a wide range of input and
output impedances.
In the design and testing of the LT1462/LT1463, particular
emphasis has been placed on optimizing performance in
the low cost SO-8 (dual) and 14-lead SO package (quad) for
±15V and ±5V supplies. The input common mode range
includes the positive rail. Slew rate (0.08V/µs min) and gain
bandwidth product (125kHz min) are 100% tested. A full set
of matching specifications is also provided.
, LTC and LT are registered trademarks of Linear Technology Corporation.
C-Load is a trademark of Linear Technology Corporation.
TYPICAL APPLICATION
Low Power Logging Amplifier
R8
100k
D1
1N4148
Q1
2N3904
C1
1nF
R5
24k
R1
100Ω
5V
2– 4
1/4 LT1463
3+
11
– 5V
PHOTODIODE
R2
24k
C2
200pF
C5
200pF
1
12 +
1/4 LT1463
13 –
R4
10M
14
D2
1N4148
R3
100k
C5
1µF R9
1M
DC
5+
OUT C3
0.47µF
AMP 3
7
1/4 LT1463
6–
R7 R10
10M 50k
D3
1N4148
R6
100k
INPUT
DC OUTPUT
CURRENT VOLTAGE OF AMP 3
10pA
100pA
1nA
10nA
100nA
1 µA
10 µA
100 µA
1mA
–0.145V
–0.341V
–0.518V
–0.684V
–0.846V
–0.995V
–1.13V
–1.25V
–1.37V
10 +
1/4 LT1463
9–
C4
10µF
8
R11
1M
AC
OUT
R3
10k
R12
10k
1462 • TA01
Small-Signal Response, CL = 10nF
AV = 1
VS = ±5V, ±15V
CL = 10nF
1462 • TA02
1
1 page  
TYPICAL PERFORMANCE CHARACTERISTICS
LT1462/LT1463
Input Bias and Offset Current vs
Temperature
10000
1000
VS = ±15V
VCM = 0V
LT1462/LT1463
LT1462A
100
BIAS CURRENT
10
OFFSET CURRENT
Input Bias Current Over the
Common Mode Range
20
VS = ±15V
TA = 25°C
15
10
5
0
1
0 25 50 75 100 125
AMBIENT TEMPERATURE (°C)
LT1462 • TPC01
Supply Current vs Temperature
60
50
–5
–15 –10 –5 0 5 10
COMMON MODE INPUT VOLTAGE (V)
15
LT1462 • TPC02
Voltage Noise vs Frequency
1000
VS = ±15V
TA = 25°C
40
VS = ±15V
30
100
VS = ±5V
20
1/f CORNER = 5Hz
10
–75 –50 –25 0 25 50 75 100 125
TEMPERATURE (°C)
LT1462 • TPC04
Voltage Gain vs Temperature
1000
900
800
VO = ±10V, VS = ±15V
VO = ±2V, VS = ±5V
RL = 10k
700
600 VS = ±15V
500
400
300
VS = ±5V
200
100
0
–75 –50 –25 0 25 50 75 100 125
TEMPERATURE (°C)
LT1463 • TPC07
30
0.1
1 10 100
FREQUENCY (Hz)
1000
LT1462 • TPC05
Slew Rate, Gain Bandwidth
Product vs Temperature
0.17
VS = ±15V
400
SLEW RISE
0.15
300
SLEW FALL
0.13
200
GAIN BANDWIDTH
0.11
100
0.09 0
–75 –50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
LT1462 • TPC08
Common Mode Range vs
Temperature
16
15
14
13
12
–11
–12
–13
–14
VS = ±15V
–15
–75 –50 –25 0 25 50 75 100 125
TEMPERATURE (°C)
LT1462 • TPC03
0.1Hz to 10Hz Noise
0 2 4 6 8 10
TIME (SEC)
LT1462 • TPC06
Channel Separation vs Frequency
160
VS = ±15V
TA = 25°C
140 RL = 10k
120
100
80
60
10
100 1k 10k 100k
FREQUENCY (Hz)
1M
LT1462 • TPC09
5
5 Page 
LT1462/LT1463
PACKAGE DESCRIPTION Dimensions in inches (millimeters) unless otherwise noted.
N Package
14-Lead PDIP (Narrow 0.300)
(LTC DWG # 05-08-1510)
0.770*
(19.558)
MAX
14 13 12 11 10
9
8
0.255 ± 0.015*
(6.477 ± 0.381)
0.300 – 0.325
(7.620 – 8.255)
0.130 ± 0.005
(3.302 ± 0.127)
1 234 56 7
0.045 – 0.065
(1.143 – 1.651)
0.009 – 0.015
(0.229 – 0.381)
0.015
(0.380)
MIN
+0.025
0.325 –0.015
( )8.255
+0.635
–0.381
0.125
(3.175)
MIN
0.005
(0.125)
MIN
0.100 ± 0.010
(2.540 ± 0.254)
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
0.065
(1.651)
TYP
0.018 ± 0.003
(0.457 ± 0.076)
N14 0695
S Package
14-Lead Plastic Small Outline (Narrow 0.150)
(LTC DWG # 05-08-1610)
0.337 – 0.344*
(8.560 – 8.738)
14 13 12 11 10
9
8
0.228 – 0.244
(5.791 – 6.197)
0.150 – 0.157**
(3.810 – 3.988)
0.010
(0.254
–
–
0.020
0.508)
×
45°
0.008 – 0.010
(0.203 – 0.254)
1234567
0° – 8° TYP
0.053 – 0.069
(1.346 – 1.752)
0.004 – 0.010
(0.101 – 0.254)
0.016 – 0.050
0.406 – 1.270
0.014 – 0.019
(0.355 – 0.483)
*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
0.050
(1.270)
TYP
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-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
S14 0695
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet LT1462CN8.PDF ] | |
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