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MAX4378FAUD+T

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MAX4378FAUD+T

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Part Number MAX4378FAUD+T
Manufacturer Maxim Integrated
Description IC OPAMP CUR SENS 1.7MHZ 14TSSOP
Datasheet MAX4378FAUD+T Datasheet
Package 14-TSSOP (0.173", 4.40mm Width)
In Stock 252 piece(s)
Unit Price $ 1.8605 *
Lead Time Can Ship Immediately
Estimated Delivery Time Dec 4 - Dec 9 (Choose Expedited Shipping)
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Part Number # MAX4378FAUD+T (Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps) is manufactured by Maxim Integrated and distributed by Heisener. Being one of the leading electronics distributors, we carry many kinds of electronic components from some of the world’s top class manufacturers. Their quality is guaranteed by its stringent quality control to meet all required standards.

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MAX4378FAUD+T Specifications

ManufacturerMaxim Integrated
CategoryIntegrated Circuits (ICs) - Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Datasheet MAX4378FAUD+TDatasheet
Package14-TSSOP (0.173", 4.40mm Width)
Series-
Amplifier TypeCurrent Sense
Number of Circuits4
Output Type-
Slew Rate10 V/µs
Gain Bandwidth Product-
-3db Bandwidth1.7MHz
Current - Input Bias800µA
Voltage - Input Offset-
Current - Supply1mA
Current - Output / Channel-
Voltage - Supply, Single/Dual (±)3 V ~ 28 V
Operating Temperature-40°C ~ 125°C
Mounting TypeSurface Mount
Package / Case14-TSSOP (0.173", 4.40mm Width)
Supplier Device Package14-TSSOP

MAX4378FAUD+T Datasheet

Page 1

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µMAX is a registered trademark of Maxim Integrated Products, Inc. General Description The MAX4376/MAX4377/MAX4378 single, dual, and quad precision high-side current-sense amplifiers are available in space-saving packages. They feature buffered voltage outputs that eliminate the need for gain-setting resistors and are ideal for today’s notebook computers, cell phones, and other systems where current monitoring is critical. These precision devices are offered in three fixed-gain versions of 20, 50, and 100: GAIN SUFFIX 20 T 50 F 100 H For example, MAX4376TAUK is a single high-side amplifier with a gain of 20. High-side current monitoring is especially useful in battery-powered systems since it does not interfere with the ground path of the battery charger. The input common-mode range of 0 to +28V is independent of the supply voltage and ensures that the current-sense feedback remains viable even when connected to a battery pack in deep discharge. The full-scale current reading can be set by choosing the appropriate voltage gain and external-sense resistor. This capability offers a high level of integration and flexibility, resulting in a simple and compact current-sense solution. The MAX4376/MAX4377/MAX4378 operate over a supply voltage range of +3V to +28V, draw 1mA of supply current per amplifier, and operate over the full automotive tempera- ture range of -40°C to +125°C. These devices have a wide bandwidth of 2MHz, making them suitable for use inside battery-charger control loops. The buffered outputs drive up to 2mA of output current into a ground-referenced load. The MAX4376 is available in a tiny 5-pin SOT23 package. The MAX4377/MAX4378 are available in space-saving 8-pin µMAX® and 14-pin TSSOP packages, respectively. Features ● Low-Cost, Single/Dual/Quad, High-Side Current- Sense Amplifiers ● ±0.5% Typical Full-Scale Accuracy ● +3V to +28V Supply Operation ● Adjustable Current-Sense Capability with External Sense Resistor ● Buffered Output Voltage with 2mA Drive ● 1mA (typ) Supply Current ● 2.0MHz Bandwidth (Gain = +20V/V) ● Automotive Temperature Range (-40°C to +125°C) ● High Accuracy +2V to +28V Common-Mode Range, Functional Down to 0V, Independent of Supply Voltage ● Three Gain Versions Available +20V/V (MAX437_T) +50V/V (MAX437_F) +100V/V (MAX437_H) ● Available in Space-Saving 5-Pin SOT23 (Single), 8-Pin µMAX (Dual), and 14-Pin TSSOP (Quad) ● AEC-Q100 Qualified, Refer to Ordering Information for the List of /V Parts Applications ● Notebook Computers ● Current-Limited Power Supplies ● Fuel Gauges in PC ● General-System/Board-Level Current Monitoring ● Battery Chargers ● Portable/Battery-Powered Systems ● Cell Phones ● Smart Battery Packages ● Automotive Current Detect ● Power Management Systems ● PA Bias Control Click here for production status of specific part numbers. MAX4376/MAX4377/ MAX4378 Single/Dual/Quad, High-Side Current-Sense Amplifiers with Internal Gain 19-1781; Rev 10; 7/18 MAX4376T/F/H RSENSE 0 TO +28V ILOADVSENSE VCC OUT GND RS++3V TO +28V RS- LOAD/ BATTERY A/D CONVERTER 0.1µF Typical Operating Circuit EVALUATION KIT AVAILABLE

Page 3

VCC, RS+, RS- to GND .........................................-0.3V to +30V OUT to GND ............................................. -0.3V to (VCC + 0.3V) Differential Input Voltage (VRS+ - VRS- ) ...............................±8V Output Short Circuit to VCC .......................................Continuous Output Short Circuit to GND.................................................... 1s Current into Any Pin .........................................................±20mA Continuous Power Dissipation (TA = +70°C) 5-Pin SOT23 (derate 7.1mW/°C above +70°C) ..........571mW 8-Pin ?MAX (derate 4.5mW/°C above +70°C) ............362mW 8-Pin SO (derate 5.88mW/°C above +70°C) ...............471mW 14-Pin SO (derate 8.33mW/°C above +70°C) .............667mW 14-Pin TSSOP (derate 9.1mW/°C above +70°C) ........727mW Operating Temperature Range ......................... -40°C to +125°C Junction Temperature ......................................................+150°C Storage Temperature Range ............................ -65°C to +150°C Lead Temperature (soldering, 10s) ................................ .+300°C Soldering Temperature (reflow) ...................................... .+260°C (VRS+ = 0 to 28V, VSENSE = (VRS+ - VRS- ) = 0V, VCC = +3.0V to +28V, RL = ∞, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = 25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Operating Voltage Range VCC Guaranteed by PSR test 3 28 V Common-Mode Input Range VCM Guaranteed by total OUT voltage error test 0 28 V Common-Mode Rejection CMR 2V ≤ VRS+ ≤ 28V, VSENSE = 100mV 90 dB Supply Current per Amplifier ICC VSENSE = 5mV, VRS+ > 2.0V, VCC = 12V 1 2.2 mA Leakage Current IRS+, IRS- VCC = 0V, VRS+ = 28V 8 mA Input Bias Current IRS+ VRS+ > 2.0V 0 60 mA VRS+ ≤ 2.0V -400 60 IRS- VRS+ > 2.0V 0 120 VRS+ ≤ 2.0V -800 120 Full-Scale Sense Voltage VSENSE 150 mV Total OUT Voltage Error (Note 2) IOUT ≤ 2mA VSENSE = 100mV, VCC = 12V, VRS+ = 12V ±6.75 % VSENSE = 100mV, VCC = 12V, TA = +25°C, VRS+ = 12V ±0.5 ±3.25 VSENSE = 100mV, VCC = 28V, VRS+ = 28V ±11 VSENSE = 100mV, VCC = 28V, VRS+ = 28V, TA = +25°C ±0.5 ±5 VSENSE = 100mV, VCC = 12V, VRS+ = 0.1V ±9 ±32 VSENSE = 6.25mV, VCC = 12V, VRS+ = 12V (Note 3) ±7 OUT High Voltage (Note 4) (VCC - VOUT) VCC = 3V, IOUT = 2mA, VRS+ = 28V 0.9 1.2 V OUT Low Voltage VOL IOUT = 200µA, VCC = VRS+ = 12V, VSENSE = 0V, TA = +25°C 25 40 mV www.maximintegrated.com Maxim Integrated │ 2 MAX4376/MAX4377/ MAX4378 Single/Dual/Quad, High-Side Current-Sense Amplifiers with Internal Gain Electrical Characteristics 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. Absolute Maximum Ratings

Page 4

Note 1: All devices are 100% production tested at TA = +25°C. All temperature limits are guaranteed by design. Note 2: Total OUT Voltage Error is the sum of gain and offset errors. Note 3: 6.25mV = 1/16 of 100mV full-scale sense voltage. Note 4: VSENSE such that VOUT is in saturation. (VRS+ = 0 to 28V, VSENSE = (VRS+ - VRS- ) = 0V, VCC = +3.0V to +28V, RL = ∞, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = 25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Bandwidth BW VCC = 12V VRS+ = 12V CLOAD = 15pF VSENSE = 100mV (gain = +20V/V) 2 MHz VSENSE = 100mV (gain = +50V/V) 1.7 VSENSE = 100mV (gain = +100V/V) 1.2 VSENSE = 6.25mV (Note 3) 0.5 Slew Rate SR VSENSE = 20mV to 100mV, CLOAD = 15pF 10 V/µs Gain AV MAX437_T +20 V/VMAX437_F +50 MAX437_H +100 Gain Accuracy DAV VSENSE = 10mV to 150mV, VCC = 12V, IOUT = 2mA, gain = 20 and 50, VRS+ = 12V TA = TMIN to TMAX ±5.5 % TA = +25°C ±0.5 ±2.5 VSENSE = 10mV to 150mV, VCC = 20V, IOUT = 2mA, gain = 100, VRS+ = 12V TA = TMIN to TMAX 5.5 TA = +25°C ±0.5 ±2.5 OUT Setting Time to 1% of Final Value VCC = 12V, VRS+ = 12V, CLOAD = 15pF VSENSE = 6.25mV to 100mV 400 ns VSENSE = 100mV to 6.25mV 800 Maximum Capacitive Load CLOAD No sustained oscillation 1000 pF Output Resistance ROUT VSENSE = 100mV 5 W Power-Supply Rejection PSR VRS+ > 2V, VOUT = 1.6V, VCC = 3V to 28V 66 90 dB Power-Up Time to 1% of Final Value VSENSE = 100mV, CLOAD = 15pF 2 µs Saturation Recovery Time to 1% of Final Value VCC = 12V, VRS+ = 12V, CLOAD = 15pF, VSENSE = 100mV 1 µs Reverse Recovery Time to 1% of Final Value VCC = 12V, VRS_ = 12V, CLOAD = 15pF, VSENSE = -100mV to +100mV 1 µs www.maximintegrated.com Maxim Integrated │ 3 MAX4376/MAX4377/ MAX4378 Single/Dual/Quad, High-Side Current-Sense Amplifiers with Internal Gain Electrical Characteristics (continued)

Page 5

(VCC = VRS+ = 12V, VSENSE = 100mV, TA = +25°C.) -1.0 -0.6 -0.8 -0.2 -0.4 0.2 0 0.4 0.8 0.6 1.0 -50 0 25-25 50 75 100 125 150 TOTAL OUTPUT ERROR vs. TEMPERATURE M AX 43 76 /7 /8 to c0 7 TEMPERATURE (°C) TO TA L O UT PU T ER RO R (% ) MAX4376H MAX4376T MAX4376F -2.0 -1.0 -1.5 0 -0.5 1.5 1.0 0.5 2.0 GAIN ACCURACY vs. TEMPERATURE M AX 43 76 /7 /8 to c0 6 TEMPERATURE (°C) GA IN A CC UR AC Y (% ) MAX4376H MAX4376F MAX4376T -50 -25 0 25 50 75 100 125 -1.0 -0.4 -0.6 -0.8 -0.2 0 0.2 0.4 0.6 0.8 1.0 0 105 15 20 25 30 TOTAL OUTPUT ERROR vs. COMMON-MODE VOLTAGE M AX 43 76 /7 /8 to c0 5 COMMON-MODE VOLTAGE (V) TO TA L O UT PU T ER RO R (% ) MAX4376T MAX4376F MAX4376H -1 -2 0 1 2 3 4 5 6 TOTAL OUTPUT ERROR vs. SUPPLY VOLTAGE (VSENSE = 6.25mV) M AX 43 76 /7 /8 to c0 4 TO TA L O UT PU T ER RO R (% ) -4 -3 0 105 15 20 25 30 SUPPLY VOLTAGE (V) MAX4376H MAX4376F MAX4376T -1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 0 5 10 15 20 25 30 TOTAL OUTPUT ERROR vs. SUPPLY VOLTAGE (VSENSE = 100mV) M AX 43 76 /7 /8 to c0 3 SUPPLY VOLTAGE (V) TO TA L O UT PU T ER RO R (% ) MAX4376H MAX4376T MAX4376F 0 0.4 0.2 0.8 0.6 1.2 1.0 1.4 -50 0 25-25 50 75 100 125 SUPPLY CURRENT (PER AMPLIFIER) vs. TEMPERATURE M AX 43 76 /7 /8 to c0 2 TEMPERATURE (°C) SU PP LY C UR RE NT (m A) MAX4376T MAX4376F MAX4376H 0.50 0.65 0.60 0.55 0.70 0.75 0.80 0.85 0.90 0.95 1.00 0 105 15 20 25 30 SUPPLY CURRENT (PER AMPLIFIER) vs. SUPPLY VOLTAGE M AX 43 76 /7 /8 to c0 1 SUPPLY VOLTAGE (V) SU PP LY C UR RE NT (m A) MAX4376H MAX4376F MAX4376T MAX4376/MAX4377/ MAX4378 Single/Dual/Quad, High-Side Current-Sense Amplifiers with Internal Gain Typical Operating Characteristics

Page 6

(VCC = VRS+ = 12V, VSENSE = 100mV, TA = +25°C.) 2µs/div MAX4376F LARGE-SIGNAL TRANSIENT RESPONSE (VSENSE = 6mV to 100mV) IN 45mV/div OUT 2V/div 6mV 100mV 5V 0.3V M AX 43 76 to c1 3 CL = 15pF RL = 2.5kΩ 2µs/div MAX4376T LARGE-SIGNAL TRANSIENT RESPONSE (VSENSE = 6mV to 100mV) IN 45mV/div OUT 500mV/div 6mV 100mV 2V 0.120V M AX 43 76 to c1 2 CL = 15pF RL = 1kΩ 2µs/div MAX4376H SMALL-SIGNAL TRANSIENT RESPONSE (VSENSE = 95mV to 100mV) IN 5mV/div OUT 200mV/div 95mV 100mV 10V 9.5V M AX 43 76 to c1 1 CL = 15pF RL = 5kΩ 2µs/div MAX4376F SMALL-SIGNAL TRANSIENT RESPONSE (VSENSE = 95mV TO 100mV) IN 5mV/div OUT 100mV/div 95mV 100mV 5V 4.75V M AX 43 76 to c1 0 CL = 15pF RL = 2.5kΩ 2µs/div MAX4376T SMALL-SIGNAL TRANSIENT RESPONSE (VSENSE = 95mV TO 100mV) IN 5mV/div OUT 50mV/div 95mV 100mV 2.0V 1.9V M AX 43 76 to c0 9 CL = 15pF RL =1kΩ -2 0 -1 2 1 4 3 5 TOTAL OUTPUT ERROR vs. FULL-SCALE SENSE VOLTAGE M AX 43 76 /7 /8 to c0 8 VSENSE (mV) TO TA L O UT PU T ER RO R (% ) 0 50 100 150 200 MAX4376F MAX4376H MAX4376T MAX4376/MAX4377/ MAX4378 Single/Dual/Quad, High-Side Current-Sense Amplifiers with Internal Gain Typical Operating Characteristics (continued)

Page 7

(VCC = VRS+ = 12V, VSENSE = 100mV, TA = +25°C.) 0 100 50 200 150 350 300 250 400 OUTPUT LOW vs. TEMPERATURE M AX 43 76 /7 /8 to c1 7 TEMPERATURE (°C) OU TP UT LO W (m V) -50 -25 0 25 50 75 100 125 MAX4376H MAX4376F MAX4376T TIME (500ns) OVERDRIVE RESPONSE AV = +20V/V IN 200mV/div OUT 2V/div 350mV 750mV VOH 7V MAX4376/7/8 toc16 0 1.E+04 1.E+071.E+061.E+05 SMALL-SIGNAL GAIN vs. FREQUENCY 15 5 35 25 45 20 10 40 30 M AX 43 76 /7 /8 to c1 5 FREQUENCY (Hz) GA IN (d B) MAX4376T MAX4376F MAX4376H 2µs/div MAX4376H LARGE-SIGNAL TRANSIENT RESPONSE (VSENSE = 6mV to 100mV) IN 45mV/div OUT 3V/div 6mV 100mV 10V 0.6V M AX 43 76 to c1 4 CL = 15pF RL = 5kΩ www.maximintegrated.com Maxim Integrated │ 6 MAX4376/MAX4377/ MAX4378 Single/Dual/Quad, High-Side Current-Sense Amplifiers with Internal Gain Typical Operating Characteristics (continued)

Page 8

PIN NAME FUNCTIONMAX4376 MAX4376 MAX4377 MAX4378 SOT23-5 SO-8 ΜMAX-8/SO-8 SO-14/ TSSOP-14 1 4 1, 7 1, 7, 8, 14 OUT, OUT_ Output Voltage. VOUT_ is proportional to the magnitude of the sense voltage (VRS+ - VRS-). VOUT_ is approximately zero when VRS - > VRS - + (no phase reversal). 2 3 4 11 GND Ground 3 1 8 4 VCC Supply Voltage 4 8 3, 5 3, 5, 10, 12 RS+, RS_+ Power connection to the external sense resistor 5 6 2, 6 2, 6, 9, 13 RS-, RS_- Load-side connection to the external sense resistor — 2, 5, 7 — — N.C. No Connection. Not internally connected. www.maximintegrated.com Maxim Integrated │ 7 MAX4376/MAX4377/ MAX4378 Single/Dual/Quad, High-Side Current-Sense Amplifiers with Internal Gain Pin Descriptions GND OUT RS+VCC 1 5 RS- MAX4376 2 3 4 TOP VIEW SOT23 + RS- N.C.OUT 1 2 8 7 RS+ N.C.N.C. GND VCC 3 4 6 5 MAX4376 SO RS2- RS2+GND 1 2 8 7 VCC OUT2RS1- RS1+ OUT1 3 4 6 5 MAX4377 MAX/SO RS4+ GNDVCC 1 2 14 13 OUT4 RS4-RS1- RS1+ OUT1 3 4 12 11 MAX4378 SO/TSSOP 5 6RS2- OUT2 RS2+ 7 OUT3 10 9 RS3+ RS3- 8 +++ Pin Configurations

Page 9

Detailed Description The MAX4376/MAX4377/MAX4378 high-side cur- rent-sense amplifiers feature a 0 to +28V input com- mon-mode range that is independent of supply voltage. This feature allows the monitoring of current out of a battery in deep discharge and also enables high-side cur- rent sensing at voltages greater than the supply voltage (VCC). The MAX4376/MAX4377/MAX4378 operate as follows: current from the source flows through RSENSE to the load (Figure 1). Since the internal sense amplifier’s inverting input has high impedance, negligible current flows through RG2 (neglecting the input bias current). Therefore, the sense amplifier’s inverting-input voltage equals VSOURCE - (ILOAD)(RSENSE). The amplifier’s open-loop gain forces its noninverting input to the same voltage as the inverting input. Therefore, the drop across RG1 equals (ILOAD) (RSENSE). Since IRG1 flows through RG1, IRG1 = (ILOAD)(RSENSE)/RG1. The internal current mirror multi- plies IRG1 by a current gain factor, β, to give IRGD = β x IRG1. Solving IRGD = β x (ILOAD)(RSENSE)/RG1. Therefore: VOUT = b x (RGD/RG1)(RSENSE x ILOAD) x amp gain where amp gain is 2, 5, or 10. The part’s gain equals (β x RGD / RG1) x amp gain. Therefore: VOUT = (GAIN)(RSENSE)(ILOAD) where GAIN = 20 for MAX437_T. GAIN = 50 for MAX437_F. GAIN = 100 for MAX437_H. Set the full-scale output range by selecting RSENSE and the appropriate gain version of the MAX4376/ MAX4377/ MAX4378. Applications Information Recommended Component Values The MAX4376/MAX4377/MAX4378 sense a wide variety of currents with different sense resistor values. Table 1 lists common resistor values for typical operation of the MAX4376/MAX4377/MAX4378. Choosing RSENSE To measure lower currents more accurately, use a high value for RSENSE. The high value develops a higher sense voltage that reduces offset voltage errors of the internal op amp. In applications monitoring very high currents, RSENSE must be able to dissipate the I2R losses. If the resistor’s rated power dissipation is exceeded, its value may drift or it may fail altogether, causing a differential voltage across the terminals in excess of the absolute maximum ratings. If ISENSE has a large high-frequency component, min- imize the inductance of RSENSE. Wire-wound resistors have the highest inductance, metal-film resistors are somewhat better, and low-inductance metal-film resistors are best suited for these applications. Bidirectional Current-Sense Amplifier Systems such as laptop computers and other devices that have internal charge circuitry require a precise bidi- rectional current-sense amplifier to monitor accurately the battery’s current regardless of polarity. Figure 2 shows the MAX4377 used as a bidirectional current monitor. This is useful for implementing either smart battery packs or fuel gauges. Current Source Circuit Figure 3 shows a block diagram using the MAX4376 with a switching regulator to make a current source. www.maximintegrated.com Maxim Integrated │ 8 MAX4376/MAX4377/ MAX4378 Single/Dual/Quad, High-Side Current-Sense Amplifiers with Internal Gain

Page 10

Figure 2. Bidirectional Current MonitorFigure 1. Functional Diagram Table 1. Recommended Component Values FULL-SCALE LOAD CURRENT, ILOAD (A) CURRENT-SENSE RESISTOR, RSENSE (mΩ) GAIN (+V/V) FULL-SCALE OUTPUT VOLTAGE (FULL-SCALE VSENSE = 100mV), VOUT (V) 0.1 1000 20 2.0 50 5.0 100 10.0 1 100 20 2.0 50 5.0 100 10.0 5 20 20 2.0 50 5.0 100 10.0 10 10 20 2.0 50 5.0 100 10.0 RSENSE +3V TO +28V VCC BATTERY MAX4377 SYSTEM AND CHARGER OUT2 RS1+ RS1- OUT1 RS2- RS2+ RSENSEVSOURCE 0 TO +28V +3V TO +28V RGD VOUT IRG1 IRGD ILOAD RG1 RG2 RS-RS+ OUT GND TO LOAD BATTERY VCC CURRENT MIRROR A1 MAX4376 AV = 2, 5, OR 10 OUT www.maximintegrated.com Maxim Integrated │ 9 MAX4376/MAX4377/ MAX4378 Single/Dual/Quad, High-Side Current-Sense Amplifiers with Internal Gain

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Madel*****illegas

November 13, 2020

It's so nice to have all these babies. I was using so many for projects, I decided to buy these. They'll definitely last me a while!

Domin*****ristian

November 13, 2020

Item sent as described. Showed up quickly. Worked as it said and would recommend again.

Log*****Mayer

November 8, 2020

It gives you a good quality product, with a great variety.. I will for sure order this set again when i start to run low.

Syl***** Ryan

November 4, 2020

Competitive prices, fast/cheap shipping, easy find my desired items, powerful online business what I need to do are a few clicks!

Brist*****nnings

November 3, 2020

I was able to make my list of needed parts and use suggested relative selection. The five stars represent the fact they show inventory quantity. So far i'm happy.

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