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LT1990 Datasheet(PDF) 16 Page - Linear Technology

Part # LT1990
Description  Micropower, Difference Amplifier
PDF  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1990 Datasheet(HTML) 16 Page - Linear Technology

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LT1990
16
1990fb
©LINEAR TECHNOLOGY CORPORATION 2004
LT 0406 REV B • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATIO
PART NUMBER
DESCRIPTION
COMMENTS
LT1787
Precision High Side Current Sense Amplifier
On-Chip Precision Resistor Array
LT1789
Micropower Instrumentation Amplifier
Micropower, Precision, G = 1 to 1000
LTC1921
Dual –48V Supply and Fuse Monitor
Withstands
±200V Transients
LT1991
High Accuracy Difference Amplifier
Micropower, Precision, Pin Selectable G = –13 to 14
LT1995
30MHz, 1000V/
µs Gain Selectable Amplifier
Pin Selectable G = –7 to 8
LT6910
Single Supply Programmable Gain Amplifier
Digitally Controlled, SOT-23, G = 0 to 100
Telecom Supply Current Monitor
Selectable Gain Amplifier
Bidirectional Controlled Current Source
Boosted Bidirectional Controlled Current Source
–
+
LT6650
GND
IN
OUT
FB
174k
20k
1nF
1
µF
VREF = 4V
1
2
3
2
6
5
7
4
1
8
4
5
LOAD
RS
48V
IL
+
–
5V
VOUT
1990 AI01
–77V
≤ VCM ≤ 8V
VOUT = VREF – (10 • IL • RS)
LT1990
REF
G1
G2
–
+
3
2
6
7
4
8
5
1
+V
–V
LT1990
VOUT
VIN+
VIN–
1990 AI02
REF
2N7002
2N7002
GAIN_SEL
(HI = 10X, LO = 1X)
G1
G2
–
+
3
2
6
7
4
1
+V
–V
LT1990
ILOAD
ILOAD = VCTL/RSENSE ≤ 5mA
EXAMPLE: FOR RSENSE =100Ω,
OUTPUT IS 1mA PER 100mV INPUT
VCTL
RSENSE
1990 AI03
REF
–
+
3
2
6
7
4
1
+V
–V
LT1990
ILOAD
ILOAD = VCTL/RSENSE ≤ 100mA
EXAMPLE: FOR RSENSE =10Ω,
OUTPUT IS 1mA PER 10mV INPUT
VCTL
RSENSE
1990 AI04
10
µF
1k
1k
REF
CZT751
CZT651
+
PACKAGE DESCRIPTIO
.016 – .050
(0.406 – 1.270)
.010 – .020
(0.254 – 0.508)
× 45°
0
°– 8° TYP
.008 – .010
(0.203 – 0.254)
SO8 0303
.053 – .069
(1.346 – 1.752)
.014 – .019
(0.355 – 0.483)
TYP
.004 – .010
(0.101 – 0.254)
.050
(1.270)
BSC
1
2
3
4
.150 – .157
(3.810 – 3.988)
NOTE 3
8
7
6
5
.189 – .197
(4.801 – 5.004)
NOTE 3
.228 – .244
(5.791 – 6.197)
.245
MIN
.160
±.005
RECOMMENDED SOLDER PAD LAYOUT
.045
±.005
.050 BSC
.030
±.005
TYP
INCHES
(MILLIMETERS)
NOTE:
1. DIMENSIONS IN
2. DRAWING NOT TO SCALE
3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
S8 Package
8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610)



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