LT1464 LINER [Linear Technology], LT1464 Datasheet

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LT1464

Manufacturer Part Number
LT1464
Description
Dual/Quad Micropower, 1MHz C-Load Picoampere Bias Current JFET Input Op Amps
Manufacturer
LINER [Linear Technology]
Datasheet

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

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LT1464 Summary of contents

Page 1

... 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 ...

Page 2

... LT1465CN +IN D LT1465CS – + – OUT C S PACKAGE 14-LEAD PLASTIC SO = 150 C, = 110 150 C, = 150 unless otherwise noted. A LT1464AC LT1464C/LT1465C TYP MAX MIN TYP MAX 0.4 0.8 0.4 0.8 0.6 2.0 0.6 2.0 0.2 1.2 0.5 2.0 0.5 15 0.4 2.0 0.5 3.0 0 ...

Page 3

... LT1464AC LT1464C/LT1465C TYP MAX MIN TYP MAX 0.5 1.4 0.5 1.4 0.9 2.8 0.9 2 450 60 150 150 750 600 200 600 350 100 350 200 80 200 ...

Page 4

... Note 1: Typical parameters are defined as 60% yield of parameter distributions of individual amplifiers, i.e., out of 100 LT1465s (or 100 LT1464s) typically 240 op amps (or 120) will be better than the indicated specification. Note 2: The LT1464 and LT1465 are designed, characterized and expected to meet these extended temperature limits, but are not tested at – and 85 C ...

Page 5

... TEMPERATURE ( C) LT1464 • TPC02 0.1Hz to 10Hz Noise 10k 4 3k TIME (SEC) LT1464 • TPC05 Channel Separation vs Frequency 160 1.5 140 1.3 1.1 120 0.9 100 0.7 80 0.5 60 150 10 100 1k 10k FREQUENCY (Hz 15V S 100 ...

Page 6

... L 1 0.1 10 100 1k 10k 100k 100 125 FREQUENCY (Hz) LT1464 • TPC14 Small-Signal Response 5V, 15V LOAD s/DIV 1000pF L LT1464 • TPC17 100k 1M LT1464 • TPC12 C = 0pF 10nF L 1M 10M LT1464 • TPC15 = 1000pF LT1464 • TPC18 ...

Page 7

... W U gain follower mode (Figure 1b) and the response of the LT1464/LT1465 (Figure 1c). The phase reversal of Figure 1b can cause lock-up in servo systems. The LT1464/LT1465 does not phase-reverse when the common mode input is anywhere within the supplies. LT1464 • F01a LT1464 • F01c (1c) LT1464/LT1465 Output ...

Page 8

... R4 R6 154k 249k 1 1/4 LT1465 C2 3 100nF + C4 11 330nF –15V ,V = –110dB AT f > 300Hz P-P OUT V = –6dB 16Hz OUT LT1009 V = –2.5V REF 0kHz to 30kHz OUT OUT (R )( REF R5 154k C3 10nF 13 – 14 1/4 LT1465 V OUT 12 + LT1464 • TA05 ...

Page 9

... R10 Q16 C1 Q28 V EE R16 Q11 Q13 Q10 R10 LT1464/LT1465 V CC R20 Q17 R17 Q22 Q20 R22 R1O Q29 Q21 Q23 Q25 Q24 Q27 Q26 1464 Q18 R18 OUT R19 Q19 9 ...

Page 10

... LT1464/LT1465 PACKAGE DESCRIPTION 0.300 – 0.325 (7.620 – 8.255) 0.009 – 0.015 (0.229 – 0.381) +0.025 0.325 –0.015 +0.635 8.255 –0.381 *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm) 0.010 – 0.020 45 (0.254 – ...

Page 11

... DWG # 05-08-1610) (8.560 – 8.738 0.228 – 0.244 (5.791 – 6.197 0.053 – 0.069 (1.346 – 1.752) 0 – 8 TYP 0.014 – 0.019 (0.355 – 0.483) LT1464/LT1465 0.770* (19.558) MAX 0.065 (1.651) TYP 0.018 0.003 (0 ...

Page 12

... GAIN TRIM 75k – 1/2 LT1464 OUTPUT + 4 – (R2)( OUT S REF IN * TRW#MTR-5/120ppm LT1464 • TA04 (Max) , 6.3MHz GBW B , 5.3MHz GBW, 1.5pF Input Capacitance n (Max Drift OS 14645fa LT/GP 0197 5K REV A • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1996 ...

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