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PDF MAX44285 Data sheet ( Hoja de datos )
| Número de pieza | MAX44285 | |
| Descripción | Current-Sense Amplifier | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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MAX44285
Dual-Channel, High-Precision,
High-Voltage, Current-Sense Amplifier
General Description
The MAX44285 dual-channel high-side current-sense
amplifier has precision accuracy specifications of VOS
less than 12μV (max) and gain error less than 0.1%
(max).
The MAX44285 features an input common-mode voltage
range from 2.7V to 76V with 80kHz of small-signal band-
width, which makes it ideal for interfacing with a SAR ADC
for multichannel multiplexed data acquisition systems.
The MAX44285 operates over the -40°C to +125°C tem-
perature range. The MAX44285 is offered in 8-bump WLP
and 8-pin µMAXM packages.
Applications
● Base Stations and Communication Equipment
● Power Management Systems
● Server Backplanes
● Industrial Control and Automation
Benefits and Features
● 2.7V to 76V Input Common Mode
● Low 12μV (max) Input Offset Voltage
● Low 0.1% (max) Gain Error
● Gain Options
• G = 12.5V/V (MAX44285L)
• G = 20V/V (MAX44285T)
• G = 50V/V (MAX44285F)
• G = 100V/V (MAX44285H)
● 1mm x 2mm 8-Bump WLP and 8-Pin µMAX
Packages
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Typical Operating Circuit
VCM = 2.7V TO 76V
RSENSE1
ISENSE1
SYSTEM
LOAD 1
VCM = 2.7V TO 76V
RSENSE2
ISENSE2
VDD = 2.7V TO
5.5V
RS1+
VDD
RS1- RS2+
MAX44285
RS2-
OUT2
OUT1
GND
SYSTEM
LOAD 2
For related parts and recommended products to use with this part, refer
to www.maximintegrated.com/MAX44285.related.
Ordering Information appears at end of data sheet.
19-6910; Rev 2; 7/14
1 page  
MAX44285
Dual-Channel, High-Precision,
High-Voltage, Current-Sense Amplifier
Typical Operating Characteristics (continued)
(VRS+ = VRS- = 76V, VDD = 3.3V, VSENSE = VRS+ - VRS- = 1mV, TA = +25°C, unless otherwise noted.) (Note 2)
140
120
100
80
60
40
20
1
AC PSRR
vs. FREQUENCY
toc07
100 10000
FREQUENCY (Hz)
1000000
GAIN
vs. FREQUENCY
45
40
35 G = 100V/V
30 G = 20V/V
25
G = 50V/V
20
G = 12.5V/V
15
10
5
0
1 100 10000
FREQUENCY (Hz)
toc08
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
950 toc9
900 G = 100V/V
850
G = 12.5V/V
800
750 G = 50V/V
700
650 G = 20V/V
600
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
SUPPLY VOLTAGE (V)
OUTPUT VOLTAGE HIGH
vs. SOURCE CURRENT
250 toc11
200
G = 20V/V
150
100
50
0
0 2 4 6 8 10
SOURCE CURRENT (mA)
SUPPLY CURRENT
vs. TEMPERATURE
940
VDD = 3.3V
920
toc10
900 G = 20V/V
880
G = 50V/V
860
840 G = 12.5V/V
G = 100V/V
820
-45 -20 5 30 55 80 105 130
TEMPERATURE (˚C)
OUTPUT VOLTAGE LOW
vs. SINK CURRENT
toc12
160
140
120
G = 20V/V
100
80
60
40
20
0
0 2 4 6 8 10
SINK CURRENT (mA)
www.maximintegrated.com
Maxim Integrated │ 5
5 Page 
MAX44285
Dual-Channel, High-Precision,
High-Voltage, Current-Sense Amplifier
Ordering Information
PART
MAX44285LAWA+*
MAX44285LAUA+
MAX44285TAWA+*
MAX44285TAUA+
MAX44285FAWA+*
MAX44285FAUA+
MAX44285HAWA+*
MAX44285HAUA+
GAIN (V/V)
12.5
12.5
20
20
50
50
100
100
+Denotes a lead(Pb)-free/RoHS-compliant package.
*Future Product—Contact factory for availability.
Chip Information
PROCESS: BiCMOS
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
8 WLP
8 µMAX
8 WLP
8 µMAX
8 WLP
8 µMAX
8 WLP
8 µMAX
TOP MARK
+AAF
—
+AAG
—
+AAH
—
+AAI
—
Package Information
For the latest package outline information and land patterns
(footprints), go to www.maximintegrated.com/packages. Note
that a “+”, “#”, or “-” in the package code indicates RoHS status
only. Package drawings may show a different suffix character, but
the drawing pertains to the package regardless of RoHS status.
PACKAGE PACKAGE OUTLINE
TYPE
CODE
NO.
LAND
PATTERN NO.
8 WLP
8 µMAX
W81A2+2
U8+1
21-0210
21-0036
Refer to
Application Note 1891
90-0092
www.maximintegrated.com
Maxim Integrated │ 11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet MAX44285.PDF ] | |
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