MAX40018 Evaluation Kit Evaluates: MAX40018 General Description Features The MAX40018 evaluation kit (EV kit) provides a proven Accommodates Multiple Op-Amp Configurations design to evaluate the MAX40018 low power, rail-to- Accommodates Easy-to-Use Components rail dual-operational amplifiers (op amps) in an 8-bump Proven PCB Layout (1.63mm x 0.91mm x 0.5mm) wafer-level package (WLP). The EV kit circuit is preconfigured as noninverting Fully Assembled and Tested amplifiers, but can be adapted to other topologies by changing a few components. The EV kit comes with a MAX40018ANA+ installed. Ordering Information appears at end of data sheet. MAX40018 EV Kit Photo 319-100130 Rev 0 1/18MAX40018 Evaluation Kit Evaluates: MAX40018 Quick Start Detailed Description of Hardware The MAX40018 EV kit provides a proven layout for the Required Equipment MAX40018 ultra-precision, low-noise, low-drift, dual op MAX40018 EV kit amp. The device is a single/dual-supply, dual op amp (op +5V, 10mA DC power supply (PS1) amp 1 and op amp 2) that is ideal for ADC buffers. Two precision voltage sources The default configuration for the device in the EV kit is single-supply operation in noninverting configuration. Two digital multimeters (DMMs) However, the device can operate with a dual supply as Procedure long as the voltage across the V and VSS pins of the DD The EV kit is fully assembled and tested. Follow the steps IC do not exceed the absolute maximum ratings. When below to verify board operation: operating with a single supply, short V to GND using SS jumper JU5. 1) Verify that all jumpers (JU1JU5) are in their default positions, as shown in Table 1. Op-Amp Configurations 2) Conn ect the positive terminal of the +5V supply to The device is a single/dual-supply dual op amp that is VDD and the negative terminal to GND and VSS. ideal for differential sensing, noninverting amplification, buffering, and filtering. A few common configurations are 3) Connect the positive terminal of the precision voltage shown in the next few sections. source to IN1+. Connect the negative terminal of the precision voltage source to GND. IN1- is already The following sections explain how to configure one of the connected to GND through jumper JU1. devices op amps (op amp 1). To configure the devices second op amp (op amp 2), the same equations can be 4) Conn ect the positive terminal of the second precision used after modifying the component reference designators. voltage source to the IN2+ test point. Connect the negative terminal of the precision voltage source to GND. IN2- Noninverting Configuration is alread y connected to GND through jumper JU3. The EV kit comes preconfigured as a noninverting ampli- 5) Conn ect the DMMs to monitor the voltages on OUT1 fier. The gain is set by the ratio of R5 and R1. The EV kit and OUT2. With the 10k feedback resistors and 1k comes preconfigured for a gain of +11. The output voltage series resistors, the gain of each noninverting amplifier for the noninverting configuration is given by the equation is +11. below: 6) Turn on the +5V power supply. R5 V =(1+) V V 7) Apply 100mV from the precision voltage sources. O UT1 I N1+ O S R1 Observe the output at OUTA and OUTB on the DMMs. Both should read approximately +1.1V. Inverting Configuration 8) Apply 400mV from the precision voltage sources. Both To configure the EV kit as an inverting amplifier, remove OUT1 and OUT2 should read approximately +4.4V. the shunt on jumper JU1 and install a shunt on jumper Note: For dual-supply operation, a 0.85V to 2.75V can be JU2 and feed an input signal on the IN1- test point. applied to VDD and VSS, respectively. In this case, remove the shunt on jumper JU5. The rest of the procedure remains the same as that of the single-supply operation. Maxim Integrated 2 www.maximintegrated.com