LT1490A LINER [Linear Technology], LT1490A Datasheet

no-image

LT1490A

Manufacturer Part Number
LT1490A
Description
Dual Over-The-Top Micropower Rail-to-Rail Input and Output Op Amp
Manufacturer
LINER [Linear Technology]
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LT1490ACDD
Manufacturer:
LT
Quantity:
10 000
Part Number:
LT1490ACDD
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LT1490ACDD#PBF
Manufacturer:
LT
Quantity:
5 006
Part Number:
LT1490ACDD#PBF/AIDD
Manufacturer:
LT
Quantity:
5 000
Part Number:
LT1490ACDD#TRPBF
Manufacturer:
AD
Quantity:
15 700
Part Number:
LT1490ACDD#TRPBF
Manufacturer:
LT
Quantity:
100
Part Number:
LT1490ACDD#TRPBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LT1490ACDDTRPBF
Manufacturer:
STM
Quantity:
2 712
Part Number:
LT1490ACMS8
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LT1490ACMS8
Manufacturer:
LINEAR/凌特
Quantity:
800
Part Number:
LT1490ACMS8#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LT1490ACMS8#TR
Manufacturer:
LTNEAR
Quantity:
20 000
Part Number:
LT1490ACS8#PBF
Manufacturer:
ADI
Quantity:
630
Part Number:
LT1490ACS8#PBF
Manufacturer:
LT
Quantity:
1 000
FEATURES
TYPICAL APPLICATIO
APPLICATIO S
Low Input Offset Voltage: 500 V Max
Output Swings to 10mV Max from V
Rail-to-Rail Input and Output
Micropower: 50 A/Amplifier Max
MSOP Package
Over-The-Top
44V Above V
Specified on 3V, 5V and 15V Supplies
High Output Current: 20mA
Output Drives 10,000pF with Output Compensation
Reverse Battery Protection to 18V
No Supply Sequencing Problems
High Voltage Gain: 1500V/mV
High CMRR: 98dB
No Phase Reversal
Gain Bandwidth Product: 200kHz
Battery- or Solar-Powered Systems
Supply Current Sensing
Battery Monitoring
Micropower Active Filters
4mA to 20mA Transmitters
Portable Instrumentation
Sensor Conditioning
TM
, Independent of V
Input Common Mode Range Extends
U
CHARGER
VOLTAGE
I
BATT
U
LOAD
+
=
I
(R
0.2
BATT
R
S
S
)(R
G
V
/R
OUT
+
A
)(GAIN)
V
BATT
R
R
R A
2k
2k
R
2k
2k
A
B
B
´
´
= 12V
=
V
GAIN
OUT
AMPS
+
1/2 LT1490A
+
1/2 LT1490A
Battery Monitor
2N3904
Input and Output Op Amp
DESCRIPTIO
The LT
op amp with improved input offset voltage (500 V max) and
output voltage swing (10mV max from V
mended for all new designs. The LT1490A operates on all
single and split supplies with a total voltage of 2V to 44V,
drawing only 40 A of quiescent current per amplifier. It is
reverse supply protected; it draws virtually no current for
reverse supply up to 18V. The input range of the LT1490A
includes both supplies and the output swings to both sup-
plies. Unlike most micropower op amps, the LT1490A can
drive heavy loads; its rail-to-rail output drives 20mA. The
LT1490A is unity-gain stable and drives all capacitive loads
up to 10,000pF when optional 0.22 F and 150 compensa-
tion is used.
The LT1490A has a unique input stage that operates and
remains high impedance when above the positive supply.
The inputs take 44V both differential and common mode
even when operating on a 3V supply. Built-in resistors
protect the inputs for faults below the negative supply up to
15V. There is no phase reversal of the output for inputs 15V
below V
The LT1490A dual op amp is available in the 8-pin MSOP,
PDIP and SO packages.
Over-The-Top is a trademark of Linear Technology Corporation.
2N3904
Q2
S1
S1 = OPEN, GAIN = 1
S1 = CLOSED, GAIN = 10
, LTC and LT are registered trademarks of Linear Technology Corporation.
Q1
R
10k
®
Micropower Rail-to-Rail
G
10k
1490A is an enhanced version of the popular LT1490
or 44V above V
LOGIC HIGH (5V) = CHARGING
LOGIC LOW (0V) = DISCHARGING
1/2 LT1490A
+
+
1/2 LT1490A
Dual Over-The-Top
R
V
A
S
90.9k
= 5V, 0V
U
= R
B
, independent of V
14901A TA01
LOGIC
V
OUT
LT1490A
). It is recom-
+
.
1

Related parts for LT1490A

LT1490A Summary of contents

Page 1

... A of quiescent current per amplifier reverse supply protected; it draws virtually no current for reverse supply up to 18V. The input range of the LT1490A includes both supplies and the output swings to both sup- plies. Unlike most micropower op amps, the LT1490A can drive heavy loads ...

Page 2

... Differential Common Mode 44V CM ORDER PART NUMBER TOP VIEW + 8 V LT1490ACN8 7 OUT B LT1490ACS8 A 6 –IN B LT1490AIN8 B 5 +IN B LT1490AIS8 S8 PACKAGE S8 PART MARKING 8-LEAD PLASTIC SO = 150 C, = 130 C/ W (N8) JA 1490A = 150 C, = 190 C/ W (S8) JA 1490AI MIN TYP MAX 110 ...

Page 3

... – CONDITIONS N8, S8 Package – MS8 Package – LT1490A MIN TYP MAX UNITS 4 200 1500 V/mV 133 V/mV 100 V/mV ...

Page 4

... Note 3: The LT1490AC and LT1490AI are guaranteed functional over the operating temperature range of – Note 4: The LT1490AC is guaranteed to meet specified performance from The LT1490AC is designed, characterized and expected to meet specified performance from – but is not tested or QA sampled at these temperatures. The LT1490I is guaranteed to meet specified performance from – ...

Page 5

... SINKING LOAD CURRENT (A) 1490A G05 Noise Voltage Density vs Frequency 100 1k FREQUENCY (Hz) 1490A G08 LT1490A Input Bias Current vs Common Mode Voltage 5000 3000 1000 T = – 125 –10 4 ...

Page 6

... LT1490A W U TYPICAL PERFOR A CE CHARACTERISTICS Gain and Phase Shift vs Frequency 2. PHASE GAIN 10 0 –10 –20 – 100 1000 FREQUENCY (kHz) 1490A G10 Gain Bandwidth Product and Phase Margin vs Supply Voltage 250 240 PHASE MARGIN 230 220 ...

Page 7

... 0.5V TO 2. 0.2V TO 2.2V IN 0.001 10 0 LOAD RESISTANCE TO GROUND (k ) Large-Signal Response V = 15V –1 V LT1490A Capacitive Load Handling, Overshoot vs Capacitive Load 100 170 A SOURCE – 100 ...

Page 8

... The output voltage swing of the LT1490A is affected by input overdrive as shown in the typical performance + . In this curves. The output of the LT1490A can be pulled up to 18V beyond + V with less than 1nA of leakage current, provided that V is less than 0.5V. The normally reverse-biased substrate diode from the ...

Page 9

... U U APPLICATIO S I FOR ATIO Gain The open-loop gain is almost independent of load when the output is sourcing current. This optimizes performance U TYPICAL APPLICATIO S Square Wave Oscillator 59k 5V 100k + 1/2 LT1490A 100k – R 50k C 1490A TA02 0 2RC WITH 5V SUPPLY OUT P 200 ...

Page 10

... LT1490A PACKAGE DESCRIPTIO 0.007 (0.18) * DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE ** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE 0.300 – ...

Page 11

... TYP 0.016 – 0.050 0.014 – 0.019 (0.406 – 1.270) (0.355 – 0.483) TYP LT1490A 0.150 – 0.157** (3.810 – 3.988 0.004 – 0.010 (0.101 – 0.254) 0.050 (1 ...

Page 12

... SOT-23, 800 V V Gain-Bandwidth = 200kHz, Shutdown Pin SOT-23, 800 V V Gain-Bandwidth = 1.2MHz, Shutdown Pin 60V R16 100k Q1 IRF628 Q3 2N3904 Z1 R17 620 15V 100k – 14 R18 1/2 LT1490A 100 R24 R23 R14 420 4.7k 10k R25 R15 47k 4.7k Q5 2N3904 LOAD Z2 R19 ...

Related keywords