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Linear Technology Electronic Components Datasheet

LT1465 Datasheet

Dual/Quad Micropower/ 1MHz C-Load Picoampere Bias Current JFET Input Op Amps

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LT1464/LT1465
Dual/Quad Micropower,
1MHz C-Load Picoampere
Bias Current JFET Input Op Amps
FEATURES
s Input Bias Current:
2pA Max (LT1464A)
20pA Max (LT1464, LT1465)
s Supply Current per Amplifier: 200µA Max
s Gain Bandwidth Product: 1MHz Typ
s Slew Rate: 0.9V/µs Typ
s Input Common Mode Range Includes Positive Rail
s Unity-Gain Stable for C-LoadTM Up to 10nF
s Open-Loop Gain: 1 Million Typ
s Guaranteed Specs with ±5V, ±15V Supplies
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®1464 (dual) and LT1465 (quad) are the first
micropower op amps (200µA max per amp) to offer
picoampere input bias currents (500fA 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 LT1464/LT1465 ideal over a wide range of input and
output impedances.
In the design and testing of the LT1464/LT1465, particular
emphasis has been placed on optimizing performance in
the low cost SO-8 (dual) and 14-lead SO (quad) package for
±15V and ±5V supplies. The input common mode range
includes the positive rail. Slew rate (0.5V/µs min) and gain
bandwidth product (650kHz 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
Micropower Low Droop Track-and-Hold/Peak Detector
V+
1/4 LTC201 13 15
A 16
4 14
V
1 MCT2 5
5+
26
4
7 R1*
1/2 LT1464
IN 6
1 MCT2 5
1/4 LTC201
B1
2
26
4
53
C1
10nF
POLYSTYRENE
V+
28
1/2 LT1464
3+ 4
V
1
VOUT
LT1464 • TA01
TYPICAL DROOP = 0.5pA = 0.05mV/s
10nF
TOTAL SUPPLY CURRENT = 460 µA MAX
* R1 = 600 FOR ±15V SUPPLIES
R1 = 0 FOR ±5V SUPPLIES
FUNCTION
MODE
Track-and-Hold
Track
Positive Peak Detector Reset
Negative Peak Detector Reset
LTC201 switch is open for logic "1".
IN A IN B MODE IN A IN B
0 0 Hold 1 1
0 0 Store 0 1
0 0 Store 1 0
Small-Signal Response, CLOAD = 10nF
AV = 1
VS = ±5V, ±15V
CL = 10nF
1464 • TA02
1


Linear Technology Electronic Components Datasheet

LT1465 Datasheet

Dual/Quad Micropower/ 1MHz C-Load Picoampere Bias Current JFET Input Op Amps

No Preview Available !

LT1464/LT1465
ABSOLUTE MAXIMUM RATINGS
Supply Voltage ..................................................... ±20V
Differential Input Voltage ...................................... ±40V
Input Current ....................................................... 20mA
Output Short-Circuit Duration ......................... Indefinite
Operating Temperature Range ............... – 40°C to 85°C
Specified Temperature Range ................ – 40°C to 85°C
Maximum Junction Temperature ......................... 150°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
PACKAGE/ORDER INFORMATION
OUT A 1
–IN A 2
+IN B 3
V4
TOP VIEW
A
B
8 V+
7 OUT B
6 –IN B
5 +IN B
N8 PACKAGE
8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 130°C/ W (N)
TJMAX = 150°C, θJA = 190°C/ W (S)
ORDER PART
NUMBER
LT1464ACN8
LT1464ACS8
LT1464CN8
LT1464CS8
S8 PART MARKING
1464A
1464
Consult factory for Industrial and Military grade parts.
TOP VIEW
OUT A 1
–IN A 2
+IN A 3
V+ 4
+IN B 5
–IN B 6
OUT B 7
A
B
14 OUT D
13 –IN D
D
12 +IN D
11 V
10 +IN C
C
9 –IN C
8 OUT C
N PACKAGE
14-LEAD PDIP
S PACKAGE
14-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 110°C/ W (N)
TJMAX = 150°C, θJA = 150°C/ W (S)
ORDER PART
NUMBER
LT1465CN
LT1465CS
ELECTRICAL CHARACTERISTICS VS = ±15V, VCM = 0V, TA = 25°C, unless otherwise noted.
SYMBOL PARAMETER
VOS Input Offset Voltage
IOS Input Offset Current
IB Input Bias Current
en Input Noise Voltage
Input Noise Voltage Density
CMRR
PSRR
RIN
CIN
AVOL
Input Noise Current Density
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Input Resistance—Differential
Common Mode
Common Mode
Input Capacitance
Large-Signal Voltage Gain
CONDITIONS (Note 1)
VS = ±5V
VS = ±15V
VS = ±5V
VS = ±15V
VS = ±5V
VS = ±15V
0.1Hz to 10Hz
fO = 10Hz
fO = 1000Hz
fO = 10Hz, 1kHz (Note 3)
VCM = – 12.5V to 15V
VS = ±2.5V to ±20V
VCM = – 12.5V to 8V
VCM = 8V to 15V
VO = ±10V, RL = 10k
VO = ±10V, RL = 2k
VS = ±5V, VO = ±2V, RL = 10k
VS = ±5V, VO = ±1V, RL = 2k
LT1464AC
MIN TYP MAX
0.4 0.8
0.6 2.0
0.2 1.2
0.5 2.0
±0.4 ±2.0
±0.5 ±3.0
2
33
24
0.4
76 85
81 90
1012
1012
011
3
350 1000
150 450
100 250
50 170
LT1464C/LT1465C
MIN TYP MAX
0.4 0.8
0.6 2.0
0.5 15
± 0.5 ±20
2
33
24
0.4
74 85
78 90
1012
1012
1011
3
300 900
150 450
100 250
50 170
UNITS
mV
mV
pA
pA
pA
pA
µVP-P
nV/Hz
nV/Hz
fA/Hz
dB
dB
pF
V/mV
V/mV
V/mV
V/mV
2


Part Number LT1465
Description Dual/Quad Micropower/ 1MHz C-Load Picoampere Bias Current JFET Input Op Amps
Maker Linear Technology
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LT1465 Datasheet PDF






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