LT1490A LINER [Linear Technology], LT1490A Datasheet - Page 12

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

RELATED PARTS
TYPICAL APPLICATIO
LT1490A
CADENCE OSCILLATOR
PART NUMBER
LT1078/LT1079
LT2078/LT2079
LT1178/LT1179
LT2178/LT2179
LT1366/LT1367
LT1636
LT1638/LT1639
LT1782
LT1783
12
R1
33k
3
2
C1
1 F
1/2 LT1490A
+
–
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone] www.linear-tech.com
*LED OF OPTO1 ILLUMINATES WHEN THE PHONE IS OFF THE HOOK
1.6M
R4
DESCRIPTION
Dual/Quad 55 A Max, Single Supply, Precision Op Amps
Dual/Quad 17 A Max, Single Supply, Precison Op Amps
Dual/Quad Precision, Rail-to-Rail Input and Output Op Amps
Single Over-The-Top Micropower Rail-to-Rail Input and Output
Op Amp
Dual/Quad 1.2MHz Over-The-Top Micropower, Rail-to-Rail
Input and Output Op Amps
Micropower, Over-The-Top, SOT-23, Rail-to-Rail
Input and Output Op Amp
1.2MHz, Over-The-Top, Micropower, Rail-to-Rail
Input and Output Op Amp
1
1N4148
0.47 F
R3
10k
47k
R2
D1
C2
R5
100k
5
6
1/2 LT1490A
620k
+
–
R8
U
20Hz OSCILLATOR
10k
16k
R6
R7
7
300k
R9
Ring-Tone Generator
R10
620k
0.068 F
R11
10k
C4
SMOOTHING FILTER
10
9
0.01 F
C3
0.047 F
1/2 LT1490A
+
–
POWER AMPLIFIER
C5
COMMENTS
Input/Output Common Mode Includes Ground, 70 V V
and 2.5 V/ C Drift (Max), 200kHz GBW, 0.07V/ s Slew Rate
Input/Output Common Mode Includes Ground, 70 V V
and 4 V/ C Drift (Max), 85kHz GBW, 0.04V/ s Slew Rate
475 V V
55 A Supply Current, V
Independent of V
0.4V/ s Slew Rate, 230 A Supply Current per Amplifier
SOT-23, 800 V V
Gain-Bandwidth = 200kHz, Shutdown Pin
SOT-23, 800 V V
Gain-Bandwidth = 1.2MHz, Shutdown Pin
130k
IRF9620
R12
R13
10k
8
OS(MAX)
Q2
–180V
R14
10k
R15
47k
13
12
, 500V/mV A
CC
IRF628
OS(MAX)
OS(MAX)
–
1/2 LT1490A
+
, MSOP Package, Shutdown Function
Q1
100k
15V
11
R20
Z2
60V
CM
, I
, I
4
R24
420
S
S
Extends 44V above V
VOL(MIN)
=55 A (Max),
=300 A (Max),
LINEAR TECHNOLOGY CORPORATION 2000
100k
15V
Z1
R19
620
1490af LT/TP 0300 4K • PRINTED IN USA
47 F
14
C7
100k
R16
, 400kHz GBW
2N3904
R23
4.7k
R25
4.7k
620
100
Q4
2N3906
R17
R18
Q3
EE
R21
150
C6
0.033 F
LOAD
,
1490A TA03
Q5
2N3904
R26
2k
OS(MAX)
OS(MAX)
UP TO
TEN
PHONES
OPTO1*