Linear Technology LT1464CN8 Linear IC DIP8 Dual, Amp,Pico Amp JFET OA LT1464CN8 Data Sheet
Product codes
LT1464CN8
1
LT1464/LT1465
Dual/Quad Micropower,
1MHz C-Load Picoampere
Bias Current JFET Input Op Amps
–
+
13
4
15
14
2
3
5
V
+
V
–
1/4 LTC201
1/4 LTC201
16
5
6
1
A
IN
B
7
R1*
1/2 LT1464
+
–
2
3
1
1/2 LT1464
1
2
1
2
5
4
5
4
6
6
8
4
V
+
V
–
C1
10nF
POLYSTYRENE
V
OUT
TYPICAL DROOP = = 0.05mV/s
TOTAL SUPPLY CURRENT = 460
µ
A MAX
* R1 = 600
Ω
FOR
±
15V SUPPLIES
R1 = 0
Ω
FOR
±
5V SUPPLIES
0.5pA
10nF
LT1464 • TA01
FUNCTION
MODE
IN A IN B
MODE IN A IN B
Track-and-Hold
Track
0
0
Hold
1
1
Positive Peak Detector Reset
0
0
Store
0
1
Negative Peak Detector Reset
0
0
Store
1
0
LTC201 switch is open for logic "1".
MCT2
MCT2
Small-Signal Response, C
LOAD
= 10nF
A
V
= 1
V
S
=
±
5V,
±
15V
C
L
= 10nF
TYPICAL APPLICATIO
N
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
C-Load is a trademark of Linear Technology Corporation.
1464 • TA02
Micropower Low Droop Track-and-Hold/Peak Detector
■
Battery-Powered Systems
■
Photocurrent Amplifiers
■
Low Frequency, Micropower Active Filters
■
Low Droop Track-and-Hold Circuits
APPLICATIO
N
S
U
■
Input Bias Current:
2pA Max (LT1464A)
20pA Max (LT1464, LT1465)
20pA Max (LT1464, LT1465)
■
Supply Current per Amplifier: 200
µ
A Max
■
Gain Bandwidth Product: 1MHz Typ
■
Slew Rate: 0.9V/
µ
s Typ
■
Input Common Mode Range Includes Positive Rail
■
Unity-Gain Stable for C-Load
TM
Up to 10nF
■
Open-Loop Gain: 1 Million Typ
■
Guaranteed Specs with
±
5V,
±
15V Supplies
■
Guaranteed Matching Specifications
■
Standard Pinout: SO-8, SO-14 Package
The LT
®
1464 (dual) and LT1465 (quad) are the first
micropower op amps (200
µ
A 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.
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
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/
µ
s min) and gain
bandwidth product (650kHz min) are 100% tested. A full
set of matching specifications is also provided.
set of matching specifications is also provided.
FEATURES
DESCRIPTIO
N
U