MAX4080FAUA-T Maxim Integrated, MAX4080FAUA-T Datasheet

no-image

MAX4080FAUA-T

Manufacturer Part Number
MAX4080FAUA-T
Description
Special Purpose Amplifiers
Manufacturer
Maxim Integrated
Series
MAX4080, MAX4081r
Datasheet

Specifications of MAX4080FAUA-T

Number Of Channels
Single
Common Mode Rejection Ratio (min)
100 dB
Input Offset Voltage
0.6 mV
Operating Supply Voltage
5 V, 9 V, 12 V, 15 V
Supply Current
0.075 mA
Maximum Power Dissipation
362 mW
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 40 C
Supply Voltage - Max
76 V
Supply Voltage - Min
4.5 V
The MAX4080/MAX4081 are high-side, current-sense
amplifiers with an input voltage range that extends from
4.5V to 76V making them ideal for telecom, automotive,
backplane, and other systems where high-voltage cur-
rent monitoring is critical. The MAX4080 is designed for
unidirectional current-sense applications and the
MAX4081 allows bidirectional current sensing. The
MAX4081 single output pin continuously monitors the
transition from charge to discharge and avoids the
need for a separate polarity output. The MAX4081
requires an external reference to set the zero-current
output level (V
resented by an output voltage from V
discharge current is given from V
For maximum versatility, the 76V input voltage range
applies independently to both supply voltage (V
and common-mode input voltage (V
current monitoring does not interfere with the ground
path of the load being measured, making the
MAX4080/MAX4081 particularly useful in a wide range
of high-voltage systems.
The combination of three gain versions (5V/V, 20V/V,
60V/V = F, T, S suffix) and a user-selectable, external
sense resistor sets the full-scale current reading and its
proportional output voltage. The MAX4080/MAX4081
offer a high level of integration, resulting in a simple,
accurate, and compact current-sense solution.
The MAX4080/MAX4081 operate from a 4.5V to 76V sin-
gle supply and draw only 75µA of supply current. These
devices are specified over the automotive operating
temperature range (-40°C to +125°C) and are available
in a space-saving 8-pin µMAX
Pin Configurations appear at end of data sheet.
Functional Diagrams continued at end of data sheet.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
UCSP is a trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
76V, High-Side, Current-Sense Amplifiers with
Automotive (12V, 24V, or 42V Batteries)
48V Telecom and Backplane Current
Measurement
Bidirectional Motor Control
Power-Management Systems
Avalanche Photodiode and PIN-Diode Current
Monitoring
General System/Board-Level Current Sensing
Precision High-Voltage Current Sources
SENSE
= 0V). The charging current is rep-
Functional Diagrams
General Description
®
or SO package.
REF
Applications
to GND.
REF
RS+
to V
). High-side
CC
, while
CC
)
o Wide 4.5V to 76V Input Common-Mode Range
o Bidirectional or Unidirectional I
o Low-Cost, Compact, Current-Sense Solution
o Three Gain Versions Available
o ±0.1% Full-Scale Accuracy
o Low 100µV Input Offset Voltage
o Independent Operating Supply Voltage
o 75µA Supply Current (MAX4080)
o Reference Input for Bidirectional OUT (MAX4081)
o Available in a Space-Saving, 8-Pin µMAX Package
Ordering Information continued at end of data sheet.
+ Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part.
Selector Guide appears at end of data sheet.
MAX4080FAUA+
MAX4080FAUA/V+
MAX4080FASA+
MAX4080TAUA+
MAX4080TAUA/V+
MAX4080TASA+
MAX4080SAUA+
MAX4080SAUA/V+
MAX4080SASA+
TOP VIEW
GND
N.C.
RS+
V
CC
5V/V (MAX4080F/MAX4081F)
20V/V (MAX4080T/MAX4081T)
60V/V (MAX4080S/MAX4081S)
1
2
4
3
MAX4080/MAX4081
PART
+
µMAX/SO
MAX4080
Voltage Output
6
8
7
5
Ordering Information
-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
-40°C to +125°C
TEMP RANGE
RS-
N.C.
N.C.
OUT
EVALUATION KIT AVAILABLE
Pin Configurations
GND
RS+
N.C.
V
CC
1
2
4
3
+
SENSE
µMAX/SO
MAX4081
19-2562; Rev 4; 7/11
Features
PIN-PACKAGE
8 µMAX
8 µMAX
8 SO
8 µMAX
8 µMAX
8 SO
8 µMAX
8 µMAX
8 SO
6
8
7
5
RS-
REF1A
REF1B
OUT

Related parts for MAX4080FAUA-T

MAX4080FAUA-T Summary of contents

Page 1

... REF CC o Reference Input for Bidirectional OUT (MAX4081) o Available in a Space-Saving, 8-Pin µMAX Package ) CC ). High-side RS+ PART MAX4080FAUA+ MAX4080FAUA/V+ MAX4080FASA+ MAX4080TAUA+ MAX4080TAUA/V+ MAX4080TASA+ MAX4080SAUA+ MAX4080SAUA/V+ MAX4080SASA+ Ordering Information continued at end of data sheet. + Denotes a lead(Pb)-free/RoHS-compliant package. /V denotes an automotive qualified part. Selector Guide appears at end of data sheet. ...

Page 2

... MIN MAX ±0.1 = +25°C = -40°C to +85° MIN MAX 100 124 100 122 = 1000mV 0.15 = 250mV = 100mV = MIN MAX UNITS 190 µA 190 2 µA 12 µA mV V/V ±0.6 ±1 % ±1.2 ±0.6 ±1 mV ±1 0.27 V Maxim Integrated ...

Page 3

... OUT Low Voltage REF1A = REF1B Input Voltage Range (MAX4081 Only) REF1A Input Voltage Range (MAX4081 Only) REF1A Rejection Ratio (MAX4081 Only) REF/REF1A Ratio (MAX4081 Only) REF1A Input Impedance (MAX4081 Only) Maxim Integrated = (MAX4081 only), V REF1B SENSE = +25°C.) (Notes SYMBOL CONDITIONS ...

Page 4

... V . REF1B is usually connected to REF1A or GND. REF1A REF1B . RS 0V 100kΩ, C RS+ RS- LOAD MIN TYP 250 150 20 20 500 0.1 = 100mV ( Note )/ OUT REF V = 20pF, LOAD MAX UNITS kHz µs pF Ω µs µs = 0V, for the SENSE Maxim Integrated ...

Page 5

... REFERENCE REJECTION RATIO vs. FREQUENCY 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 1 10 100 1k 10k FREQUENCY (Hz) Maxim Integrated Typical Operating Characteristics = ∞ 20pF +25°C, unless otherwise noted.) LOAD A INPUT OFFSET VOLTAGE vs. TEMPERATURE 300 250 200 150 100 50 0 -50 -100 -150 -200 -250 ...

Page 6

... 100 150 200 250 0.8 0.9 1.0 I (SINKING) (µA) OUT MAX4080S SMALL-SIGNAL TRANSIENT RESPONSE MAX4080 toc17 INPUT 5mV/div OUTPUT 300mV/div 20µs/div 50 75 100 125 (SINKING +125° 0° -40°C A 300 350 400 450 500 MAX4080 toc18 Maxim Integrated ...

Page 7

... INPUT 400mV/div OUTPUT 2V/div 20µs/div MAX4081F LARGE-SIGNAL TRANSIENT RESPONSE MAX4080 toc25 INPUT 400mV/div OUTPUT 2V/div 20µs/div Maxim Integrated Typical Operating Characteristics (continued) = ∞ 20pF +25°C, unless otherwise noted.) LOAD LOAD A MAX4081T SMALL-SIGNAL TRANSIENT RESPONSE INPUT 2.5mV/div OUTPUT 50mV/div 20µ ...

Page 8

... LOAD A MAX4080F SATURATION RECOVERY RESPONSE (V = 4.5V 5V/div INPUT 500mV/div V OUT 1V/div OUTPUT 2V/div 20µs/div MAX4080T STARTUP DELAY (V = 250mV) SENSE MAX4080 toc29 10V) 5V/div OUTPUT 2.5V/div 100µs/div MAX4080 toc30 Maxim Integrated ...

Page 9

... while discharge current is given from V CC GND. Measurements of OUT with respect positive and negative voltage during charge and dis- charge, as illustrated in Figure 1 for the MAX4081T. Maxim Integrated NAME RS+ Power connection to the external-sense resistor. Supply Voltage Input. Decouple bypass line transients ...

Page 10

... OUT V SENSE 250mV -5V GND REF1A REF1B V SENSE RS- RS MAX4081 CURRENT CURRENT MIRROR MIRROR GND For Gain = 20 (T 60k. For Gain = 60 (S 20k . = OUT 125kΩ REF1B 125kΩ REF1A V REF Maxim Integrated ...

Page 11

... V REF two. V equals V /2 when V OUT REF1A In either mode, the output swings above the reference voltage for positive current-sensing (V output swings below the reference voltage for negative current-sensing (V < RS+ RS- Maxim Integrated GAIN (V/V) 1000 5 1000 20 1000 60 100 5 100 20 100 60 ...

Page 12

... GND Dynamic Range Consideration input capability, the output voltage range SENSE and lower from REF CC Power-Supply Bypassing and Grounding to GND with a 0.1µ independent of the monitored CC can be connected to a separate regulated CC will be subject to fast-line transients, a series , SENSE can be CC Maxim Integrated ...

Page 13

... R SENSE RS+ RS MAX4081 REF1A GND REF1B SYSTEM POWER MANAGEMENT OUT AND CHARGER CIRCUITRY SERIAL INTERFACE µC Figure 5. MAX4081 Used In Smart-Battery Application Selector Guide PART GAIN (V/V) MAX4080FAUA 5 MAX4080FASA 5 MAX4080TAUA 20 MAX4080TASA 20 MAX4080SAUA 60 MAX4080SASA 60 MAX4081FAUA 5 MAX4081FASA 5 MAX4081TAUA 20 MAX4081TASA 20 MAX4081SAUA 60 MAX4081SASA 60 Maxim Integrated ...

Page 14

... Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. 14 © 2011 Maxim Integrated DESCRIPTION Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 The Maxim logo and Maxim Integrated are trademarks of Maxim Integrated Products, Inc. Revision History PAGES CHANGED — 10 ...

Related keywords