Click here to ask about the production status of specific part numbers. MAX40204 36V, Pin-Programmable Gain, Bidirectional CSA General Description Benefits and Features The MAX40204 is a high-precision, bidirectional, high-side -0.1V to 36V Wide Input Common Mode current-sense amplifier (CSA) with a wide input common- Ultra-Low, 2V Input Offset Voltage mode range from -0.1V (ground sensing) to 36V. On-the-Fly Gain Setting Input Bidirectional/Unidirectional Current Sensing The device s ultra-low 2V input offset voltage allows the 20nA (max) Input Bias Current use of small sense resistor to reduce power dissipation Extremely Low, 50nV/C Input Offset Tempco and a very low, 0.05% gain error ensures measurement 0.05% Gain Error accuracy. 21A Supply Current The MAX40204 offers two gain options using a logic-level 70nA (typ) Shutdown Current input (GAIN) that provides the flexibility to change the gain 1.7V to 5.5V Single Supply Operating Range on the fly. On-the-fly gain adjustment capability allows Space-Saving 8-Bump WLP and 8-Pin TDFN the system to enhance accuracy when measuring current Packages much smaller than set full-scale level. See Table 1 for gain configurations. Additionally, the MAX40204 supports uni- Ordering Information appears at end of data sheet. directional and bidirectional current sensing with an exter- nal 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 21A. Low operating supply current and 70nA (typ) shutdown current help ex- tend 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 -40C to +125C extended operating temperature range. Applications Current Sensing in Power Management Systems Portable and Battery-Operated Systems Medical Instruments Base Station Smart Phones and Tablets Notebook Computers 19-100845 Rev 1 10/20MAX40204 36V, Pin-Programmable Gain, Bidirectional CSA Typical Application Diagram I LOAD R SENSE V BATT UP TO 36V RS+ RS- LOAD 3.3V VDD GND SHDN 3.3V REF GAIN V /2 DD C MAX40204MAX40204 I/O OUT ADC www.maximintegrated.com Maxim Integrated 2