Evaluates: MAX2411A 19-1324 Rev 1 2/98 MAX2411A Evaluation Kit General Description Features The MAX2411A evaluation kit (EV kit) simplifies testing +2.7V to +5.5V Single-Supply Operation of the MAX2411A. This EV kit allows evaluation of the 50 SMA Inputs and Outputs on RF and IF Ports MAX2411As low-noise amplifier (LNA), receive down- converter mixer, transmit upconverter mixer, variable- Allows Testing of Shutdown Mode gain power-amplifier (PA) driver, and power-management Fully Assembled and Tested features. Component List Ordering Information DESIGNATION QTY DESCRIPTION PART TEMP. RANGE PIN-PACKAGE C1, C2 2 47pF ceramic capacitors, 0603 size MAX2411AEVKIT -40C to +85C 28 QSOP 10F tantalum capacitor C3 1 AVX TAJC106K016 C4, C5, Component Suppliers 4 0.1F ceramic capacitors, 0805 size C6, C8 SUPPLIER PHONE INTERNET C7, C10, C11, C16, C17, 7 220pF ceramic capacitors, 0805 size (803) 946-0690/ AVX MAX2411A Evaluation Kit 5) Connect the spectrum analyzer to the IF SMA con- Connections and Setup This section provides a step-by-step guide for operat- nector. Set the spectrum analyzer to a 400MHz ing the EV kit and testing all four major functions: the center frequency, a 200MHz total span, and a 0dBm reference level. LNA, receive mixer, transmit mixer, and PA driver. Do not turn on the DC power or RF signal generators 6) Turn on the DC supply, LO signal generator, and RF until all connections are made. input signal generator. 7) The downconverted output signal at 400MHz is visi- Low-Noise Amplifier ble on the spectrum analyzer, indicating a mixer 1) Set the RXEN jumper on the EV kit to the Logic 1 conversion gain of typically 9.4dB after accounting position and the TXEN jumper to the Logic 0 posi- for cable and balun losses. The balun loss is typi- tion. This enables the MAX2411As receive mode. cally 1dB at 400MHz. 2) Connect a DC supply set to 3V (through an amme- ter if desired) to the V and GND terminals on the CC Power-Amplifier Driver EV kit. Do not turn on the supply. 1) Disable the outputs of the signal generators. Turn off the DC supply. Remove any RF signal connec- 3) Connect one RF signal generator with the output disabled to the LNAIN SMA connector. Set the gen- tions made in the above tests. erator for an output frequency of 1.9GHz at a power 2) Set the RXEN jumper to theLogic 0 position, and level of -40dBm. the TXEN jumper to theLogic 1 position. This puts 4) Connect a spectrum analyzer to the LNAOUT SMA the MAX2411A in transmit mode. connector on the EV kit. Set it to a center frequency 3) Set the voltage source to be used for the gain-control of 1.9GHz, a total span of 200MHz, and a reference (GC) voltage to 2.15V and turn it off. Connect it to level of 0dBm. the middle pin of the V jumper on the EV kit. GC 5) Turn on the DC supply. The supply current should 4) Connect to the PADRIN SMA Connector an RF signal read approximately 20mA (if using an ammeter). generator with the output disabled. Set the frequency to 1.9GHz and the output power to -10dBm. 6) Enable the RF generators output. A signal on the spectrum analyzers display should indicate a typi- 5) Connect the PADROUT SMA connector to the spec- cal gain of 16.2dB after accounting for cable losses. trum analyzer. Configure the analyzer to a center 7) If desired, the shutdown feature can be tested by frequency of 1.9GHz, a reference level of +10dBm, moving the RXEN jumper into the Logic 0 position. and 200MHz total span. The supply current should drop to less than 10A. 6) Turn on the DC supply, V voltage source, and RF GC signal generator. Receive Downconverter Mixer 7) The supply current should read typically 30mA. A 1) Disable the output of the RF signal generator. Turn off the DC supply. Remove the RF signal generator 1.9GHz signal should be visible on the spectrum analyzer display, indicating a typical gain of 15dB and spectrum analyzer from the LNAIN and LNAOUT after accounting for cable losses. connectors. The DC supply connections needed for testing the downconverter mixer are the same as in 8) Lowering the voltage on the V voltage source to GC the LNA section. 0 should reduce the gain typically by 35dB. 2) Set the RXEN jumper on the EV kit to the Logic 1 Transmit Upconverter Mixer position and the TXEN jumper to the Logic 0 posi- 1) Disable the outputs of the signal generators. tion. This enables the MAX2411As receive mode. Disconnect the V voltage source. Turn off the DC GC 3) Connect one RF signal generator (with the output supply. Remove any RF signal connections made in disabled) to the LO SMA connector. Set the fre- the above tests. quency to 1.5GHz and the output power to -10dBm. 2) Set the RXEN jumper to theLogic 0 position, and This is the LO signal. the TXEN jumper to theLogic 1 position. This puts 4) Connect the other RF signal generator (with the out- the MAX2411A in transmit mode. put disabled) to the RXMXIN SMA connector. Set the frequency to 1.9GHz and the output power to -30dBm. This is the RF input signal. 2 Evaluates: MAX2411A