MAX9937EVKIT+ Maxim Integrated Products, MAX9937EVKIT+ Datasheet

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MAX9937EVKIT+

Manufacturer Part Number
MAX9937EVKIT+
Description
EVAL KIT FOR MAX9937
Manufacturer
Maxim Integrated Products
Datasheets
1.MAX9937EVKIT.pdf (11 pages)
2.MAX9937EVKIT.pdf (5 pages)

Specifications of MAX9937EVKIT+

Channels Per Ic
1 - Single
Amplifier Type
Current Sense
Output Type
Single-Ended
-3db Bandwidth
350kHz
Current - Output / Channel
22mA
Operating Temperature
-40°C ~ 125°C
Current - Supply (main Ic)
20µA
Voltage - Supply, Single/dual (±)
2.7 V ~ 5.5 V
Board Type
Fully Populated
Utilized Ic / Part
MAX9937
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Slew Rate
-
The MAX9937 is a tiny automotive grade current-sense
amplifier designed for unidirectional high-side current-
sense applications. This device addresses major areas
of concern for automotive applications including load-
dump protection up to +40V, reverse-battery protec-
tion, and filtering for EMI and transient performance.
The MAX9937 also features a low input offset voltage of
±1.2mV (max) at +25°C with a low temperature drift of
just 1µV/°C (typ).
The MAX9937 is available in a 5-pin SC70 package and
is rated over the -40°C to +125°C temperature range.
19-4233; Rev 0; 8/08
Pin Configuration appears at end of data sheet.
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.
Automotive Battery Current Sense
Fuse Box Current Sense
ECU Current Monitor
________________________________________________________________ Maxim Integrated Products
V
BAT
TO 28V
GAIN = V
General Description
= 4V
V
Automotive Current-Sense Amplifier
SENSE
OUT
= R
R
OUT
RSP
Applications
GND
with Reverse-Battery Protection
MAX9937
R
499Ω
10kΩ
R
RSP
OUT
RSP
RS+
OUT
R
SENSE
♦ Reverse Battery and Load-Dump Protection
♦ +4V to +28V Input Common-Mode Range
♦ Flexible EMI Filtering
♦ Low V
♦ Low V
♦ 20µA Supply Current
♦ 350kHz, 3dB Small Signal Bandwidth
+ Denotes a lead-free/RoHS-compliant package.
T = Tape and reel.
RS-
MAX9937AXK+T
RSN
BLOCK
R
499Ω
BIAS
RSN
-20V to +40V
PART
OS
OS
V
: ±1.2mV (max)
CC
Drift: 1µV/°C (typ)
Typical Application Circuit
-40°C to +125°C
TEMP RANGE
MICROCONTROLLER
ADC
Ordering Information
5V
LOAD
PACKAGE
5 SC70
PIN-
Features
MARK
+ATB
TOP
1

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MAX9937EVKIT+ Summary of contents

Page 1

... R GAIN = V OUT R V SENSE ________________________________________________________________ Maxim Integrated Products 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. with Reverse-Battery Protection ♦ Reverse Battery and Load-Dump Protection -20V to +40V ♦ +4V to +28V Input Common-Mode Range ♦ ...

Page 2

Automotive Current-Sense Amplifier with Reverse-Battery Protection ABSOLUTE MAXIMUM RATINGS RSP, RSN to GND Voltage Continuous ..................-0.3V to +30V RSP, RSN to GND Load-Dump Voltage Duration (V = 40V) with Typical Application Circuit .......................1s BAT RSP, RSN to GND Reverse-Battery Voltage ...

Page 3

Automotive Current-Sense Amplifier ELECTRICAL CHARACTERISTICS (continued 5V 12V BAT RS+ SENSE values are +25°C, unless otherwise noted. See the Typical Application Circuit .) (Note 2) A PARAMETER SYMBOL Maximum ...

Page 4

Automotive Current-Sense Amplifier with Reverse-Battery Protection ( 12V BAT RSP SENSE See the Typical Application Circuit .) OFFSET VOLTAGE HISTOGRAM 100 175 250 ...

Page 5

Automotive Current-Sense Amplifier ( 12V BAT RSP SENSE See the Typical Application Circuit .) GAIN ERROR HISTOGRAM -0.115 -0.105 -0.110 -0.100 GAIN ERROR (%) GAIN ...

Page 6

Automotive Current-Sense Amplifier with Reverse-Battery Protection ( 12V BAT RSP SENSE See the Typical Application Circuit .) INPUT BIAS CURRENT MISMATCH vs. COMMON-MODE VOLTAGE 2.0 1.6 1.2 0.8 0 ...

Page 7

Automotive Current-Sense Amplifier ( 12V BAT RSP SENSE See the Typical Application Circuit .) OUTPUT SLEW RATE V = -5mV TO +5mV SENSE + 4μs/div LOAD-DUMP PROTECTION 100ms/div OUTPUT-VOLTAGE NONLINEARITY ...

Page 8

Automotive Current-Sense Amplifier with Reverse-Battery Protection Pin Description PIN NAME FUNCTION Power Supply. Bypass to GND with 0.1µF capacitor. 2 GND Ground 3 OUT Current Output Load-Side Connection Through 4 RSN External R Resistor RSN Supply-Side ...

Page 9

Automotive Current-Sense Amplifier BAT TO 28V = R GAIN = V OUT OUT V R RSP SENSE *FILTER CAPACITORS ARE OPTIONAL. Figure 1. Typical Application Circuit with Optional External Filtering , ΔR In this case ...

Page 10

Automotive Current-Sense Amplifier with Reverse-Battery Protection At frequencies below the output corner frequency, the MAX9937 itself provides excellent 100dB (DC) com- mon-mode rejection. At higher frequencies, as the CMRR of the MAX9937 degrades, the output filter formed by R and ...

Page 11

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11 © 2008 Maxim Integrated Products ...

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