MAX9610 Current-Sense Amplifier Datasheet

MAX9610 Datasheet, PDF, Equivalent


Part Number

MAX9610

Description

Precision Current-Sense Amplifier

Manufacture

Maxim Integrated

Total Page 11 Pages
Datasheet
Download MAX9610 Datasheet


MAX9610
19-4342; Rev 0; 10/08
1µA, µDFN/SC70, Lithium-Ion Battery,
Precision Current-Sense Amplifier
General Description
The MAX9610 high-side current-sense amplifier offers
precision accuracy specifications of VOS less than
500μV (max) and gain error less than 0.5% (max). This
device features an ultra-low 1μA quiescent supply cur-
rent. The MAX9610 fits in a tiny, 1mm x 1.5mm μDFN
package or a 5-pin SC70 package, making this part
ideal for applications in notebook computers, cell
phones, cameras, PDAs, and all lithium-ion (Li+) bat-
tery-operated portable devices where accuracy, low
quiescent current, and small size are critical.
The MAX9610 features an input voltage range (com-
mon mode) from 1.6V to 5.5V. This input range is excel-
lent for monitoring the current of a single-cell,
lithium-ion battery, which at full charge is 4.2V, typically
3.6V in normal use, and less than 2.9V when ready to
be recharged. These current-sense amplifiers have a
voltage output and are offered in three gain versions:
25V/V (MAX9610T), 50V/V (MAX9610F), and 100V/V
(MAX9610H).
The three gain versions offer flexibility in the choice of
the external current-sense resistor. The very low 500μV
(max) input offset voltage allows small 25mV to 50mV
full-scale VSENSE voltage for very low voltage drop at
full-load current measurement.
The MAX9610 is offered in tiny 6-pin μDFN, (1mm x
1.5mm x 0.8mm footprint) and 5-pin SC70 packages,
specified for operation over the -40°C to +85°C temper-
ature range.
For a very similar 1.6V to 28V input voltage device in a
4-bump UCSP™ package (1mm x 1mm x 0.6mm), refer
to the MAX9938 data sheet.
Applications
Cell Phones
Cameras
Portable Li+ Battery Powered Systems
3.3V and 5V Power Management Systems
PDAs
USB Ports
Pin Configurations appear at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
Features
Ultra-Low Supply Current of 1µA (max)
Low 500µV (max) Input Offset Voltage
Low < 0.5% (max) Gain Error
Input Common Mode: +1.6V to +5.5V
Voltage Output
Three Gain Versions Available
25V/V (MAX9610T)
50V/V (MAX9610F)
100V/V (MAX9610H)
Tiny µDFN (1mm x 1.5mm x 0.8mm) and
SC70 Packages
Ordering Information
PART*
PIN-
PACKAGE
GAIN
(V/V)
TOP MARK
MAX9610TELT+T
MAX9610FELT+T
MAX9610HELT+T
MAX9610TEXK+T
MAX9610FEXK+T
MAX9610HEXK+T
6 μDFN
6 μDFN
6 μDFN
5 SC70
5 SC70
5 SC70
25 OU
50 OS
100 OT
25 ATG
50 ATE
100 ATF
*All devices are specified over the -40°C to +85°C extended
temperature range.
+Denotes a lead-free/RoHS-compliant package.
T = Tape and reel.
Typical Operating Circuit
ILOAD
RSENSE
RS+ RS-
R1 R1
LOAD
VBATT =
1.6V to 5.5V
P
VDD = 3.3V
μC
OUT
ADC
ROUT
10kΩ
MAX9610
GND
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.

MAX9610
1µA, µDFN/SC70, Lithium-Ion Battery,
Precision Current-Sense Amplifier
ABSOLUTE MAXIMUM RATINGS
RS+, RS- to GND......................................................-0.3V to +6V
OUT to GND .............................................................-0.3V to +6V
RS+ to RS- .............................................................................±6V
Short-Circuit Duration: OUT to GND or RS+ ..............Continuous
Continuous Input Current (Any Pin)..................................±20mA
Continuous Power Dissipation (TA = +70°C)
5-Pin SC70 (derate 3.1mW/°C above +70°C) ..............247mW
6-Pin μDFN (derate 2.1mW/°C above +70°C) .............168mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Package Reflow Soldering Temperature .........................+260°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VRS+ = VRS- = 3.6V, VSENSE = (VRS+ - VRS-) = 0, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
(Note 1)
PARAMETER
Supply Current
(Note 2)
Common-Mode Input Range
Common-Mode Rejection Ratio
Input Offset Voltage
Gain
Gain Error
Output Resistance
OUT Low Voltage
OUT High Voltage
SYMBOL
ICC
VCM
CMRR
VOS
G
GE
ROUT
VOL
VOH
CONDITIONS
VRS+ = 3.6V, TA = +25°C
VRS+ = 3.6V, -40°C < TA < +85°C
VRS+ = 5.5V, TA = +25°C
VRS+ = 5.5V, -40°C < TA < +85°C
Guaranteed by CMRR,
-40°C < TA < +85°C
1.6V < VRS+ < 5.5V, -40°C < TA < +85°C
TA = +25°C, gain = 25, 50, 100 (Note 3)
Gain = 25, 50
-40°C < TA < +85°C Gain = 100
MAX9610T
MAX9610F
MAX9610H
TA = +25°C, gain = 25, 50, 100 (Note 4)
Gain = 25, 50
-40°C < TA < +85°C Gain = 100
TA = +25°C (Note 5)
G = 25
G = 50
G = 100
VOH = VRS- - VOUT (Note 6)
MIN TYP MAX UNITS
0.6 1.0
1.4
0.75 1.2
μA
1.6
1.6 5.5 V
80 104
±100 ±500
±600
±700
25
50
100
±0.1 ±0.5
±0.8
±1
7.0 10 13.2
2.5 15
5 30
10 70
0.1 0.2
dB
μV
V/V
%
kΩ
mV
V
2 _______________________________________________________________________________________


Features 19-4342; Rev 0; 10/08 MAX9610 1µA, µ DFN/SC70, Lithium-Ion Battery, Precisio n Current-Sense Amplifier General Desc ription The MAX9610 high-side current-s ense amplifier offers precision accurac y specifications of VOS less than 500μ V (max) and gain error less than 0.5% ( max). This device features an ultra-low 1μA quiescent supply current. The MAX 9610 fits in a tiny, 1mm x 1.5mm μDFN package or a 5-pin SC70 package, making this part ideal for applications in no tebook computers, cell phones, cameras, PDAs, and all lithium-ion (Li+) batter y-operated portable devices where accur acy, low quiescent current, and small s ize are critical. The MAX9610 features an input voltage range (common mode) fr om 1.6V to 5.5V. This input range is ex cellent for monitoring the current of a single-cell, lithium-ion battery, whic h at full charge is 4.2V, typically 3.6 V in normal use, and less than 2.9V whe n ready to be recharged. These current- sense amplifiers have a voltage output and are offered in three gain.
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