Evaluates: MAX4208/MAX4209 19-0997 Rev 0 9/07 MAX4208 Evaluation Kit General Description Features The MAX4208 evaluation kit (EV kit) simplifies evalua- Single- or Dual-Supply Operation tion of the MAX4208 ultra-low offset/drift, adjustable 2.85V to 5.5V Single-Supply Operation gain, precision instrumentation amplifier in a MAX 1.425V to 2.75V Dual-Supply Operation package. The MAX4208 features high-impedance dif- ferential inputs optimized for small voltages (100mV Adjustable Voltage Gain Configured to 148V/V max) and provides rail-to-rail output. The MAX4208 EV Rail-to-Rail Output kit is configured for a gain of 148V/V. The EV kit oper- ates from a single-supply voltage between 2.85V and Configurable Reference Voltage: Externally or 5.5V, or dual supplies providing 1.425V to 2.75V. Internally Buffered The MAX4208 EV kit can also be used to evaluate the Optional Current-Sense Mode MAX4209 fixed-gain amplifiers. The MAX4208 IC tem- Fully Assembled and Tested perature range is -40C to +125C. The MAX4209 EV kit, available separately, evaluates the 100V/V fixed-gain MAX4209 amplifier without external gain-setting resistors. Note: To evaluate a MAX4209 IC featuring internal gain-setting resistors, order a MAX4209EVKIT+ or request a free sample of the MAX4209 IC along with the MAX4208EVKIT+. See the Part Selection Table for IC ordering information. Component List Ordering Information DESIGNATION QTY DESCRIPTION PART TYPE 10F 10%, 10V X5R ceramic MAX4208EVKIT+ EV Kit capacitors (0805) +Denotes lead-free and RoHS-compliant C1, C3 2 Murata GRM21BR61A106K KEMET C0805C106K8PAC 0.1F 10%, 10V X5R ceramic Part Selection Table capacitors (0402) C2, C4, C5 3 Murata GRM155R61A104K PART GAIN (V/V) KEMET C0402C104K8RACTU MAX4208AUA+ Adjustable C6, C7 0 Not installed, capacitors (0603) MAX4209TAUA+ 10 1000pF 10%, 16V X5R ceramic MAX4209HAUA+ 100 C8 1 capacitor (0402) MAX4209KAUA+ 1000 Murata GRM155R61C102K JU1 1 4-pin header JU2, JU3 2 2-pin headers 1k 0.1% resistor (0805) R1 1 IRC PCF-W0805LF-03-1001-B 147k 0.1% resistor (0805) R2 1 IRC PCF-W0805LF-03-1473-B R3, R4 2 4.99k 1% resistors (0603) R5, R6 0 Not installed, resistorsshort (0603) R7 0 Not installed, resistor (1206) U1 1 MAX4208AUA+ (8-pin MAX) 3 Shunts 1 PCB: MAX4208 Evaluation Kit+ MAX is a registered trademark of Maxim Integrated Products, Inc. Maxim Integrated Products 1 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.MAX4208 Evaluation Kit Component Suppliers SUPPLIER PHONE WEBSITE IRC 361-992-7900 www.irctt.com KEMET Corp. 864-963-6300 www.kemet.com Murata Mfg. Co., Ltd. 770-436-1300 www.murata.com Note: Indicate that you are using the MAX4208 or MAX4209 when contacting these component suppliers. Quick Start Detailed Description The MAX4208 EV kit evaluates the MAX4208 instrumenta- Recommended Equipment tion amplifier that features adjustable gain with gain- Before beginning, the following equipment is needed: setting resistors R1 and R2, low offset voltage, and low 5V, 1A-rated DC power supply offset voltage drift. The output-voltage range is from VSS Function generator + 100mV, to VDD - 100mV. The MAX4208 EV kit voltage gain is configured to 148V/V. The EV kit operates from a Oscilloscope single-supply voltage between 2.85V and 5.5V or from a dual-supply voltage providing 1.425V to 2.75V. Procedure The MAX4208 EV kit is fully assembled and tested. The MAX4208 EV kit can evaluate the fixed-gain Follow the steps below to verify board operation. MAX4209 ICs in the 8-pin MAX package by replacing Caution: Do not turn on the power supply until all the MAX4208 IC U1 and removing resistors R1 and R2. connections are completed. Power Supply 1) Verify that a shunt is installed across pins 1-4 of The MAX4208 EV kit jumper JU2 must be configured jumper JU1 (on-board buffered-reference mode). properly for single-supply or dual-supply operation. For 2) Verify that a shunt is installed on jumper JU2 (single- single-supply operation, a single power supply is con- supply operation). nected to VDD and GND. For dual-supply operation, 3) Verify that a jumper is not installed on jumper JU3 connect a positive supply to VDD, a negative supply to VSS, and supply ground to GND. See Table 1 to config- (buffered-reference mode). ure jumper JU2. 4) Set the DC power-supply output to 5V and disable the output. 5) Set the function generator output to a 10mV , P-P 200Hz, 0V DC offset sine wave. Terminate the func- Table 1. Power-Supply Configuration tion generator as needed. (Jumper JU2) 6) Connect the power-supply positive output to the VDD PCB pad on the EV kit. SHUNT VSS PIN EV KIT FUNCTION 7) Connect the power-supply ground to the GND PCB POSITION pad next to VDD on the EV kit. Connected to Single-supply operation. Installed 8) Connect the function generator output across the GND Power only VDD. differential input PCB pads, IN+ and IN-. Dual-supply operation. 9) Connect the IN- PCB pad to the GND PCB pad with Not installed Not connected Power VDD and VSS. a wire. 10) Connect the oscilloscope to the OUT PCB pad and the oscilloscope ground clip to the GND PCB pad. 11) Enable the DC power supply and the function gen- erator. 12) Verify that the oscilloscope measures a 1.48V , P-P 200Hz, 2.5V DC offset sine wave. 2 Evaluates: MAX4208/MAX4209