MAX40204

RECOMMENDED FOR NEW DESIGNS

36V, Pin-Programmable Gain, Bidirectional CSA

Increase Your Measurement Accuracy by 10x with On-the-Fly Selectable Gain

Data Sheet (Rev. 3)

Product Selection Table

Part Models: 2
1ku List Price: Starting From $1.19

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Overview

-0.1V to 36V Wide Input Common Mode
Ultra-Low, 2μV Input Offset Voltage
On-the-Fly Gain Setting Input
Bidirectional/Unidirectional Current Sensing
20nA (max) Input Bias Current
Extremely Low, 50nV/°C Input Offset Tempco
0.05% Gain Error
21μA Supply Current
70nA (typ) Shutdown Current
1.7V to 5.5V Single Supply Operating Range
Space-Saving 8-Bump WLP and 8-Pin TDFN Packages

The MAX40204 is a high-precision, bidirectional, high-side current-sense amplifier (CSA) with a wide input common-mode range from -0.1V (ground sensing) to 36V.

The device’s ultra-low 2μV input offset voltage allows the use of small sense resistor to reduce power dissipation and a very low, 0.05% gain error ensures measurement accuracy.

The MAX40204 offers two gain options using a logic-level input (GAIN) that provides the flexibility to change the gain on the fly. On-the-fly gain adjustment capability allows the system to enhance accuracy when measuring current much smaller than set full-scale level. See Table 1 for gain configurations. Additionally, the MAX40204 supports unidirectional and bidirectional current sensing with an external voltage applied to a reference input, REF.

The MAX40204 operates with single-supply in the range of 1.7V to 5.5V while consuming only 21μA. Low operating supply current and 70nA (typ) shutdown current help extend battery life and make the MAX40204 ideal for portable and battery-operated devices.

The MAX40204 is available in a small 8-bump, 0.35mm-pitch WLP (1.468mm x 0.848mm) and 8-pin TDFN (2mm x 2mm) packages and is specified over the -40°C to +125°C extended operating temperature range.

Applications

Base Station
Current Sensing in Power Management Systems
Medical Instruments
Notebook Computers
Portable and Battery-Operated Systems
Smart Phones and Tablets

Part Models: 2
1ku List Price: Starting From $1.19

Documentation

Data Sheet 1

MAX40204: 36V, Pin-Programmable Gain, Bidirectional CSA Data Sheet (Rev.3) 05/09/2024
- Open Interactive Page

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX40204ANA+	8-WLCSP-N/A	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX40204ANA+T	8-WLCSP-N/A	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Current Sense Amplifiers 1
MAX44284	PRODUCTION	36V, Input Common-Mode, High-Precision, Low-Power Current-Sense Amplifier

Tools & Simulations

SPICE Model 1

MAX40204 SPICE Macro Model

Evaluation Kits

Evaluation Kit for the MAX40204

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Features and Benefits

Wide -0.1V to 36V Input Range Common Mode Range
Operates Off a Single 5V Supply
Unidirectional/Bidirectional Operation
On-the-Fly Gain Input Jumper
Shutdown Mode Jumper
-40°C to +125°C Temperature Range
Lead(Pb)-Free and RoHS Compliant
Proven PCB Layout
Fully Assembled and Tested

Product Details

The MAX40204 evaluation kit (EV kit) is designed to evaluate the MAX40204ANA+, a precision bidirectional current-sense amplifier with wide common-mode input in an 8-bump WLP package. The EV kit provides bidirectional and unidirectional current-sensing options, a jumper (J1) to switch between two gain options (10V/V and 100V/V), and another jumper (J2) to place the board in low power mode.

The EV kit features Kelvin connections for force and sense at the amplifier inputs and a very precise current- sense resistor with a ±0.5% tolerance for accurate measurement. Various test points are included for additional evaluation. The EV kit PCB is available with the MAX40204ANA+ installed.