Evaluates: MAX2645 19-1759 Rev 0 7/00 MAX2645 Evaluation Kit General Description Features The MAX2645 evaluation kit (EV kit) simplifies evalua- Easy Evaluation of the MAX2645 tion of the MAX2645 3.4GHz to 3.8GHz low-noise All Critical Peripheral Components Included amplifier/PA predriver. The EV kit is fully assembled and tested, allowing simple evaluation of all device SMA Input and Output Connectors functions. All RF signal ports use SMA connectors, pro- RF Ports Matched to 50 at 3.55GHz viding a convenient interface to RF test equipment. Fully Assembled and Tested The MAX2645 is a versatile, high-performance, low- noise amplifier with adjustable IP3. These features allow the MAX2645 to be used in a variety of applications, from a low-noise amplifier to a PA predriver. As assem- Ordering Information bled, the MAX2645 EV kit is configured for lowest noise figure performance (NF = 2.3dB, IIP3 = +4dBm). A few PART TEMP. RANGE IC PACKAGE minor component changes configure the device as a MAX2645EVKIT -40C to +85C 10 MAX-EP* low-noise amplifier with higher linearity and slightly *Exposed paddle degraded noise figure performance (NF = 2.6dB, IIP3 = +10dBm) or as a PA predriver with high output P1dB performance (output P1dB = +12dBm). Refer to the Component Suppliers MAX2645 data sheet for application-specific perfor- SUPPLIER PHONE FAX WEB mance data. AVX 843-448-9411 843-448-1943 Avxcorp.com EFJohnson 402-474-4800 402-474-4858 Efjohnson.com Kamaya 219-489-1533 219-489-2261 Kamaya.com Murata 800-831-9172 814-238-0490 Murata.com Taiyo Yuden 800-348-2496 847-925-0899 T-Yuden.com Toko 800-PIK-TOKO 708-699-1194 Tokoam.com Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 1.5pF 0.1pF c eram ic c apac itor (04 02) R1 1 20k 1% resistor (0603) C1 1 Murata GRM36COG1R5B050 R2, R3 2 1k 5% resistors (0603) 220pF 10% ceram i c capac ito r ( 0402) C2 1 JU1, JU2 2 3-pin headers Murata GRM36X7R221K050 47pF 5% ceramic capacitor (0402) None 2 Shunts (JU1, JU2) C3 1 Murata GRM36COG470J050 J1, J2 2 Test points (VCC, GND) 0.75pF 0.1pF ceramic capacitor C4 1 SMA connectors (edge mount) (0402) Murata GRM36COGR75B050 J3, J4 2 EFJohnson 142-0701-801 0.1F 10% ceramic capacitors C5, C6, C8 3 U1 1 MAX2645EUB (0603) Murata GRM39X7R104K016 None 1 MAX2645 PC board (GETek) 10F, 16V tantalum capacitor C7 1 AVX TAJC106K016 None 1 MAX2645 data sheet 1000pF 10% ceramic capacitor C9 1 None 1 MAX2645 EV kit data sheet (0402) Murata GRM36X7R102K050 1.8nH inductor Z1 1 Toko LL1005-FH1N8S Maxim Integrated Products 1 For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800. For small orders, phone 1-800-835-8769.294mils MAX2645 Evaluation Kit Optional: Power meter for calibrating system mea- Test Equipment Required surements (HP 438A for example) This section lists the test equipment required for evalu- Connections and Setup ating the MAX2645: This section provides step-by-step instructions for set- One DC power supply capable of supplying 20mA ting up the EV kit and ensuring proper operation: of supply current over the supply voltage range +3.0V to +5.5V 1) DC Power Supply: Set the DC power supply volt- age to +3.3V. Turn the power supply off and con- One RF-signal generator or equivalent (50 ) sine- nect it to the VCC and GND connections on the EV wave source capable of delivering at least -10dBm kit. If desired, place an ammeter in series with the of output power up to 3.8GHz (HP 8648, for exam- power supply to measure supply current and a volt- ple) meter in parallel with the VCC and GND connec- One RF-spectrum analyzer or equivalent with a tions to measure supply voltage at the device. frequency range of at least 4GHz (HP 8561E, for 2) RF Signal Generator: Connect one of the 50 example) SMA cables to the RF output of the signal genera- Two 50 SMA cables (RG-58A/U or equivalent) tor. Set the RF frequency of the signal generator to Optional: Digital multimeters (DMMs) to monitor DC 3.55GHz at an output power level of -20dBm. To supply voltage and supply current improve measurement accuracy, use a power 1 VCC GND V CC C3 C6 C10 10 F 47pF 0.1 F R3 V CC 1k 1 9 2 GAIN GND GAIN JU1 0 C8 0.1 F MAX2645 R2 RFIN C1 1k 1 3 8 SHDN RFIN SHDN JU2 0 C8 0.1 F Z1 4 7 GND GND RADIAL STUB* 40 T LINE L = 1.5nH VCC EQUIV 5 8 BIAS RFOUT C9 1000pF C2 R1 220pF RFOUT C4 0.75pF C1 Z1 APPLICATION CIRCUIT R (k ) V (V) BIAS CC LNA, LOW NF 20 3.3 1.5pF 1.8nH LNA, HIGH INPUT IP3 1000pF 0.75pF 20 3.3 PA PREDRIVER 0.01 F 0.75pF 15 5.0 *BOARD MATERIAL = GETek, COPPER THICKNESS = 1 oz BOARD THICKNESS = 0.012in, DIELECTRIC CONSTANT = 3.8 Figure 1. MAX2645 EV Kit Schematic 2 Evaluates: MAX2645