19-1535; Rev 1; 6/00 MAX2320/21/22/24/26/27 Evaluation Kits Ordering Information TEMP. RANGE IC PACKAGE MAX2320EVKIT PART -40°C to +85°C 20 TSSOP-EP* MAX2321EVKIT -40°C to +85°C 20 TSSOP-EP MAX2322EVKIT -40°C to +85°C 20 TSSOP-EP MAX2324EVKIT -40°C to +85°C 20 TSSOP-EP MAX2326EVKIT -40°C to +85°C 20 TSSOP-EP MAX2327EVKIT -40°C to +85°C 20 TSSOP-EP *EP = Exposed paddle Features ♦ 50Ω SMA Ports for Easy Testing ♦ +2.7V to +3.6V Single-Supply Operation ♦ All Critical Matching Components Included ♦ Fully Assembled and Tested MAX2320/21/26/27 EV Kits Component List DESIGNATION QTY C1, C32 2 1.0pF ±0.1pF ceramic caps (0603) Murata GRM39COG010B50V C2 1 2.7pF ±0.1pF ceramic cap (0603) Murata GRM39COG2R7B50V C6, C11, C15, C18, C20, C28 6 100pF ±5% ceramic caps (0603) Murata GRM39COG101J50V C4, C5, C8, C34 4 6800pF ±5% ceramic caps (0603) Murata GRM39X7R682J50V C7, C17 2 22pF ±5% ceramic caps (0603) Murata GRM39COG220J50V C9 1 0.033µF ±10% ceramic cap (0603) Murata GRM39X7R333K50V C10 1 4.7pF ±0.1pF ceramic cap (0402) Murata GRM36COG4R7B50V C12 1 10µF ±20%,16V tantalum capacitor AVX TAJB106M016 or Sprague 293D106X0010B C13, C14, C23 3 3.3pF ±0.1pF ceramic caps (0603) Murata GRM39COG3R3B50V or 3.3pF ±0.25pF ceramic caps (0603) Murata GRM39COG3R3C50V C16, C19, C21, C22 4 0.01µF ±5% ceramic caps (0603) Murata GRM39X7R103J50V C24–C27, C29 5 1000pF ±5% ceramic caps (0603) Murata GRM39X7R102J50V C31 1 1.5pF ±0.1pF ceramic cap (0603) Murata GRM39COG1R5B50V C35 1 18pF ±5% ceramic cap (0603) Murata GRM39COG1180J50V Component Suppliers SUPPLIER AVX Coilcraft EFJohnson Kamaya PHONE FAX URL 803-946-0690 803-626-3123 www. avxcorp.com www. coilcraft.com 847-639-6400 803-639-1469 402-474-4800 www. 402-474-4858 efjohnson.com 219-489-1533 219-489-2261 www. kamaya.com Murata Electronics 800-831-9172 814-238-0490 www. murata.com Sprague 603-224-1961 603-224-1430 www. vishay.com Toko 408-432-8281 408-943-9790 www. toko.com DESCRIPTION ________________________________________________________________ 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. Evaluate: MAX2320/21/22/24/26/27 General Description The MAX2320/MAX2321/MAX2322/MAX2324/MAX2326/ MAX2327 evaluation kits (EV kits) simplify evaluation of these high-linearity, silicon germanium (SiGe), dualband LNAs/mixers. They enable testing of the devices’ RF performance and require no additional support circuitry. The signal inputs and outputs use SMA connectors to simplify the connection of RF test equipment. The MAX2320/21/22/24/26/27 EV kits are assembled with an associated IC and incorporate input and output matching components optimized for the 869MHz to 894MHz cellular frequency band, 1930MHz to 1990MHz PCS frequency band, 210MHz digital mixer output frequency, and 110MHz FM mixer output frequency. All matching components may be changed to work at other frequencies within the bands specified in the MAX2320/21/22/24/26/27 data sheet. Evaluate: MAX2320/21/22/24/26/27 MAX2320/21/22/24/26/27 Evaluation Kits MAX2320/21/26/27 EV Kits Component List (continued) DESIGNATION QTY DESCRIPTION QTY DESCRIPTION R3, R4 2 51Ω ±5% resistors (0603) Kamaya RMC16-51RJT L1 1 L2 1 6.8nH ±5% inductor (0603) Murata LQG11A6N8J00 R5 1 2kΩ ±5% resistor (0603) Kamaya RMC16-202JT L3 1 330nH ±5% inductor (1008) Coilcraft 1008CS-331XJBC R6, R7, R8, R10 4 1kΩ ±5% resistors (0603) Kamaya RMC16-102JT L4, L5 2 110nH ±5% inductors (0603) Coilcraft 0603CS-R11XJBC R9 1 8.2kΩ ±5% resistor (0603) Kamaya RMC16-822JT L6 1 3.85nH ±10% inductor Coilcraft 0906-4-10 R11 1 30Ω ±5% resistor (0603) Kamaya RMC16-30RJT L7 1 4.7nH ±0.3nH inductor (0603) Toko LL1608-FH4N7S T1 1 Balun transformer (B5F type) Toko 458DB-1011 L8 1 5.6nH ±0.5nH inductor (0603) Murata LQW1608A5N6D00 MAX2320/ 26/27 — Not installed 12 SMA connectors (PC edge mount) EFJohnson 142-0701-801 MAX2321 1 8.2nH ±5% inductor (0603) Murata LQG11A8N2J00 LNAINH, LNAOUTH, LNAINL, LNAOUTL, LOLIN, LOHIN, LOOUTH, LOOUTL, FMOUT, CDMAOUT, MIXINL, MIXINH GND, VCC 2 Test points L10 1 1.65nH air core Coilcraft 0906-2 JU1–JU4, JU6 5 3-pin headers MAX2320/ 26/27 1 20kΩ ±5% resistor (0402) Kamaya RMC16S-203JT JU5, JU8 2 2-pin headers None 7 Shunts (JU1–JU6, JU8) MAX2327 — Not installed MAX2320 1 MAX2320EUP, 20-pin TSSOP-EP 1 20kΩ ±5% resistor (0603) Kamaya RMC16-203JT MAX2321 1 MAX2321EUP, 20-pin TSSOP-EP MAX2326 1 MAX2326EUP, 20-pin TSSOP-EP MAX2327 1 MAX2327EUP, 20-pin TSSOP-EP L9 R1 DESIGNATION 1.8nH ±10% inductor (0603) Coilcraft 0603CS-1N8XKBC R2 U1 2 _______________________________________________________________________________________ MAX2320/21/22/24/26/27 Evaluation Kits DESIGNATION QTY DESCRIPTION C1, C32 2 1.0pF ±0.1pF ceramic caps (0603) Murata GRM39COG010B50V C2, C3, C5, C6, C9, C10, C18, C22, C23, C30 — Not installed C7, C17 DESIGNATION QTY DESCRIPTION L8 1 5.6nH ±0.5nH inductor (0603) Murata LQW1608A5N6D00 L10 1 1.65nH air core Coilcraft 0906-2 R1 1 2 22pF ±5% ceramic capacitors (0603) Murata GRM39COG220J50V 20kΩ ±5% resistor (0402) Kamaya RMC16S-203JT 1 20 6800pF ±5% ceramic caps (0603) Murata GRM39X7R082J50V R2 C4, C8 20kΩ ±5% resistor (0603) Kamaya RMC16-203JT 1 1 0Ω resistor Kamaya RMC16-0R0JT R3 C9 51Ω ±5% resistor (0603) Kamaya RMC16-51RJT R4 — Not installed C11, C15, C20 3 100pF ±5% ceramic caps (0603) Murata GRM39COG101J50V R5 1 2kΩ ±5% resistor (0603) Kamaya RMC16-202JT R6, R7, R8, R10 4 1kΩ ±5% resistors (0603) Kamaya RMC16-102JT R9 1 8.2kΩ ±5% resistor (0603) Kamaya RMC16-822JT R11 1 30Ω ±5% resistor (0603) Kamaya RMC16-30RJT T1 1 Balun transformer (B5F type) Toko 458DB-1011 LNAINH, LNAOUTH, LOHIN, LOOUTH, CDMAOUT, MIXINH 6 SMA connectors (PC edge mount) EFJohnson 142-0701-801 GND, VCC 2 Test points JU1–JU4, JU6 5 3-pin headers JU5, JU8 2 2-pin headers None 7 Shunts (JU1–JU6, JU8) U1 1 MAX2322EUP, 20-pin TSSOP-EP C12 C13, C14 C16, C19, C21 1 10µF ±20%, 16V, tantalum capacitor AVX TAJB106M016 or Sprague 293D106X0010B 2 3.3pF ±0.1pF ceramic caps (0603) Murata GRM39COG3R3B50V or 3.3pF ±0.25pF ceramic caps (0603) Murata GRM39COG3R3C50V 0.01µF ±5% ceramic caps (0603) Murata GRM39X7R103J50V 3 C24–C29 6 1000pF ±5% ceramic caps (0603) Murata GRM39X7R102J50V C31 1 1.5pF ±0.1pF ceramic cap (0603) Murata GRM39COG1R5B50V C33 1 33pF ±5% ceramic capacitor (0402) Murata GRM36COG330J50V L1 1 1.8nH ±10% inductor (0603) Coilcraft 0603CS-1N8XKBC L2, L3, L6, L7, L9 — Not installed L4, L5 2 110nH ±5% inductors (0603) Coilcraft 0603CS-R11XJBC _______________________________________________________________________________________ 3 Evaluate: MAX2320/21/22/24/26/27 MAX2322 EV Kit Component List Evaluate: MAX2320/21/22/24/26/27 MAX2320/21/22/24/26/27 Evaluation Kits MAX2324 EV Kit Component List DESIGNATION QTY DESCRIPTION C1, C4, C7, C8, C17, C20, C21, C31, C32, C33 — Not installed C2 1 C6, C11, C15, C18, C28 C5, C30 DESCRIPTION L10 1 4.7nH ±0.3nH inductor (0603) Toko LL1608-FH4N7S 2.7pF ±0.1pF ceramic cap (0603) Murata GRM39COG2R7B50V R1 1 20kΩ ±5% resistor (0402) Kamaya RMCS16S-203JT R2 1 5 100pF ±5% ceramic caps (0603) Murata GRM39COG101J50V 20kΩ ±5% resistor (0603) Kamaya RMC16-203JT 6800pF ±5% ceramic caps (0603) Murata GMR39X7R682J50V R3 — 2 R4 1 C9 1 0.033µF ±10% ceramic cap (0603) Murata GRM39X7R333K50V 51Ω ±5% resistor (0603) Kamaya RMC16-51RJT 1 1 4.7pF ±0.1pF ceramic cap (0402) Murata GRM36COG4R7B50V R5 C10 2kΩ ±5% resistor (0603) Kamaya RMC16-202JT R6, R7, R8, R10 4 1kΩ ±5% resistors (0603) Kamaya RMC16-102JT 1 10µF ±20%, 16V, tantalum capacitor AVX TAJB106M016 or Sprague 293D106X0010B R9 1 8.2kΩ ±5% resistor (0603) Kamaya RMC16-8252JT R11 1 30Ω ±5% resistor (0603) Kamaya RMC16-30RJT T1 1 Balun transformer (B5F type) Toko 458DB-1011 LNAINL, LNAOUTL, LOLIN, LOOUTL, FMOUT, CDMAOUT, MIXINL 7 SMA connectors (PC edge mount) EFJohnson 142-0701-801 GND, VCC 2 Test points JU1–JU4, JU6 5 3-pin headers JU5, JU8 2 2-pin headers None 7 Shunts (JU1–JU6, JU8) U1 1 MAX2324EUP, 20-pin TSSOP-EP C12 C13, C14, C23 C16, C19, C22 C24–C27, C29 3 3.3pF ±0.1pF ceramic caps (0603) Murata GRM39COG3R3B50V or 3.3pF ±0.25pF ceramic caps (0603) Murata GRM39COG3R3C50V 3 0.01µF ±5% ceramic capacitors (0603) Murata GRM39X7R103J50V 5 1000pF ±5% ceramic capacitors (0603) Murata GRM39X7R102J50V C35 1 18pF ±5% ceramic capacitor (0603) Murata GRM39COG180J50V L1, L7, L8, L9 — Not installed L2 1 6.8nH ±5% inductor (0603) Murata LQG11A6N8J00 L3 1 330nH ±5% inductor (1008) Coilcraft 1008CS-331XJBC L4, L5 2 110nH ±5% inductors Coilcraft 0603CS-R11XJBC 1 3.85nH ±10% inductor Coilcraft 0906-4-10 L6 4 DESIGNATION QTY Not installed _______________________________________________________________________________________ MAX2320/21/22/24/26/27 Evaluation Kits Test Equipment Required The adjacent table lists the required test equipment to verify MAX2320/MAX2321/MAX2322/MAX2324/MAX2326/ MAX2327 operation. It is intended as a guide only, and some substitutions are possible. 2) Install the shunts across jumpers JU5 and JU8. Install the shunt across JU6 to the FMMXR position and across JU4 to the OFF position. See Tables 1–5 for positions of the shunts across JU1, JU2, and JU3 for different modes. EQUIPMENT RF Signal Generators Capable of delivering at least 0dBm of output power up to 2.5GHz (HP 8648C or equivalent) RF Spectrum Analyzer Capable of covering the operating frequency range of the devices as well as a few harmonics (HP 8561E, for example) Power Supply Capable of up to 100mA at +2.7V to +3.6V Ammeter For measuring the supply current (optional) Network Analyzer To measure small-signal return loss and gain (optional, HP 8753D, for example) Connections and Setup This section provides a step-by-step guide to operating the EV kits and testing the devices’ functions. Do not turn on DC power or RF signal generators until all connections are made. Testing the LNA 1) Connect a DC supply set to +2.7V (through an ammeter if desired) to the VCC and GND terminals on the EV kit. If available, set the current limit to 40mA. DESCRIPTION Table 1. MAX2320/MAX2321/MAX2326 Mode Selection JU2 SHUNT POSITION JU1 SHUNT POSITION JU3 SHUNT POSITION CELL HLIN HGAIN Cellular band, high gain, high linearity CELL HLIN LGAIN Cellular band, low gain, high linearity CELL LLIN HGAIN Cellular band, high gain, low linearity CELL LLIN LGAIN Cellular band FM PCS HLIN HGAIN PCS band, high gain, high linearity PCS HLIN LGAIN PCS band, low gain, high linearity PCS LLIN HGAIN PCS band, high gain, low linearity PCS LLIN LGAIN Shutdown MODE Table 2. MAX2322 Mode Selection JU2 SHUNT POSITION* JU1 SHUNT POSITION JU3 SHUNT POSITION MODE PCS Don’t care Don’t care CELL HLIN HGAIN Shutdown PCS band, high gain, high linearity CELL HLIN LGAIN PCS band, low gain, high linearity CELL LLIN HGAIN PCS band, high gain, low linearity CELL LLIN LGAIN Not used *JU2 is connected to the MAX2322 SHDN pin. _______________________________________________________________________________________ 5 Evaluate: MAX2320/21/22/24/26/27 _________________________________Quick Start The MAX2320/21/22/24/26/27 EV kits are fully assembled and factory tested. Follow the instructions in the Connections and Setup section for proper device evaluation. Figures 1, 2, and 3 show the schematics. Figures 4 through 9 are component placement guides and PC board layouts. 6 SMA LOLIN SMA LNAINL SMA LNAOUTL JU5 C6 100pF JU1 C5 6800pF C2 2.7pF L2 6.8nH VCC VCC JU3 VCC VCC R7 1k R6 1k R8 1k C32 1pF C1 1pF C7 22pF C26 1000pF C25 1000pF C24 1000pF L10 1.65nH R1 20k (OPEN) L1 1.8nH L9 OPEN 8.2nH* SMA LNAOUTH C4 6800pF C22 0.01µF JU2 SMA LOHIN C23 3.3pF L6 3.85nH SMA LNAINH C28 100pF R11 30Ω C20 100pF 10 9 8 7 6 5 4 3 2 1 RBIAS MIXINL MIXINH LOHOUT LOLOUT FMOUT VCC BUFFEN CDMA- (IFOUT-) CDMA+ (IFOUT+) MAX2320 MAX2321 MAX2326 MAX2327 U1 ( ) ARE FOR MAX2327 ONLY *MAX2321 ONLY LOHIN LOLIN GAIN (MODE) LIN (SHDN) BAND LNAINL LNAINH RLNA (N.C.) LNAOUTL LNAOUTH C21 0.01µF 11 12 13 14 15 16 17 18 19 20 VCC R5 2k R3 51Ω R4 51Ω R9 8.2k C8 6800pF JU4 C15 100pF VCC C18 100pF L3 330nH R10 VCC 1k L4 110nH C17 22pF VCC JU6 C29 1000pF C14 3.3pF 1 C35 18pF C10 4.7pF SMA CDMAOUT SMA FMOUT SMA LOOUTL 1 C12 10µF 2 16V VCC SMA LOOUTH C11 100pF 4 6 SMA MIXINL T1 VCC SMA MIXINH C13 2 3.3pF 3 JU8 C19 0.01µF L7 4.7nH C9 0.033µF C30 OPEN C31 1.5pF L5 110nH C28 1000pF C34 6800pF C27 1000pF C16 0.01µF R2 20k L8 5.6nH GND VCC Evaluate: MAX2320/21/22/24/26/27 MAX2320/21/22/24/26/27 Evaluation Kits Figure 1. MAX2320/21/26/27 EV Kits Schematic _______________________________________________________________________________________ _______________________________________________________________________________________ JU1 VCC SMA LOHIN JU3 JU2 SMA LNAINH VCC VCC JU5 R7 1k R6 1k R8 1k C4 6800pF C32 1pF L10 1.65nH R1 20k C33 33pF C7 22pF C26 1000pF C25 1000pF C24 1000pF L1 1.8nH C1 1pF L9 OPEN SMA LNAOUTH R11 30Ω C20 100pF 10 9 8 7 6 5 4 3 2 1 LOHIN N.C. GAIN LIN SHDN N.C. LNAINH RLNA N.C. LNAOUTH C21 0.01µF LOHOUT N.C. LOX2 VCC BUFFEN CDMA- 11 12 13 14 15 16 17 VCC R5 2k R3 51Ω R9 8.2k C27 1000pF C16 0.01µF MAX2322 CDMA+ R2 20k 18 19 L8 5.6nH U1 RBIAS N.C. MIXINH 20 JU6 C15 100pF VCC VCC C29 1000pF C28 1000pF L4 110nH R10 VCC 1k JU4 L5 110nH C31 1.5pF C8 6800pF C17 22pF C14 3.3pF C19 0.01µF C13 3.3pF JU8 1 3 2 T1 VCC SMA MIXINH SMA CDMAOUT 1 C12 10µF 2 16V VCC SMA LOOUTH C11 100pF 4 6 GND VCC Evaluate: MAX2320/21/22/24/26/27 VCC MAX2320/21/22/24/26/27 Evaluation Kits Figure 2. MAX2322 EV Kit Schematic 7 8 SMA LOLIN SMA LNAINL SMA LNAOUTL JU5 C6 100pF JU1 C5 6800pF C2 2.7pF L2 6.8nH VCC VCC C23 3.3pF JU3 VCC VCC C22 0.01µF JU2 L6 3.85nH C28 100pF R11 30Ω R7 1k R6 1k R8 1k SMA LNAOUTH C1 OPEN L1 OPEN C26 1000pF C25 1000pF C24 1000pF R1 20K C20 OPEN 10 9 8 7 6 5 4 3 2 1 N.C. LOLIN GAIN LIN SHDN LNAINL MODEOUT RLNA LNAOUTL N.C. C21 OPEN N.C. LOLOUT FMOUT VCC BUFFEN CDMA- 11 12 13 14 15 16 VCC R5 2k R4 51Ω C28 100pF C30 6800pF C27 1000pF C16 0.01µF MAX2324 CDMA+ R2 20k 17 18 19 20 U1 RBIAS MIXINL N.C. C18 100pF L3 330nH VCC C15 100pF R9 8.2k JU4 L4 110nH R10 VCC 1k L5 110nH L7 OPEN C9 0.033µF 1 C29 1000pF JU6 VCC C13 2 3.3pF 3 C14 3.3pF C19 0.01µF JU8 L10 4.7nH C35 18pF C10 4.7pF T1 VCC C11 100pF 4 6 SMA MIXINL SMA LOOUTL SMA FMOUT 1 C12 10µF 2 16V VCC SMA CDMAOUT GND VCC Evaluate: MAX2320/21/22/24/26/27 MAX2320/21/22/24/26/27 Evaluation Kits Figure 3. MAX2324 EV Kit Schematic _______________________________________________________________________________________ MAX2320/21/22/24/26/27 Evaluation Kits 4) Connect the spectrum analyzer to the LNAOUTL (LNAOUTH) SMA connector for cellular (PCS) band. Set the center frequency to 881MHz (1960MHz) for cellular (PCS) band, and span to 5MHz. 5) Turn on the RF signal generator. The peak that appears on the spectrum analyzer should have a magnitude of about -11dBm in high-gain and FM modes. In low-gain modes, the magnitude should be about -27dBm. Be sure to account for cable losses (between 0.5dB and 2dB) and circuit board losses (approximately 0.5dB) when computing gain and noise figure. 6) (Optional) Another method for determining gain is by using a network analyzer. This has the advantage of displaying gain over a swept frequency band, in addition to displaying input and output return loss. Refer to the network analyzer manufacturer’s user manual for setup details. Testing the Mixer 1) Connect a DC supply set to +2.7V (through an ammeter if desired) to the VCC and GND terminals on the EV kit. If available, set the current limit to 40mA. 2) Install the shunts across jumpers JU5 and JU8. Install the shunt across JU6 to the FMMXR position (except MAX2322; see Table 5) and across JU4 to OFF. See Tables 1–4 for positions of the shunts across JU1, JU2, and JU3 for different modes. 3) Connect an RF signal generator to the MIXINL (MIXINH) SMA connector for cellular (PCS) band testing. Do not turn on the generator’s output. Set the generator for an output frequency of 881MHz (1960MHz) for cellular (PCS). Set the power level to -25dBm. 4) See Table 5, and connect the second RF signal generator to the appropriate LO connector and set the frequency accordingly. Set the power level to -6dBm. 5) In FM mode, connect the spectrum analyzer connector to the FMOUT SMA, set the center frequency to 110MHz, and span to 5MHz. For all other modes, connect the spectrum analyzer connector to the CDMAOUT SMA and set the center frequency to 210MHz and span to 5MHz. Table 3. MAX2324 Mode Selection JU2 SHUNT POSITION* JU1 SHUNT POSITION JU3 SHUNT POSITION MODE PCS Don’t care Don’t care CELL HLIN HGAIN Shutdown Cellular band, high gain, high linearity CELL HLIN LGAIN Cellular band, low gain, high linearity CELL LLIN HGAIN Cellular band, high gain, low linearity CELL LLIN LGAIN FM *JU2 is connected to the MAX2324 SHDN pin. Table 4. MAX2327 Mode Selection JU2 SHUNT POSITION JU1 SHUNT POSITION* JU3 SHUNT POSITION Don’t care LLIN Don’t care CELL HLIN HGAIN Cellular band, digital mixer output CELL HLIN LGAIN Cellular band, FM PCS HLIN HGAIN PCS band, digital mixer output PCS HLIN LGAIN Not used MODE Shutdown *JU1 is connected to the MAX2327 SHDN pin. _______________________________________________________________________________________ 9 Evaluate: MAX2320/21/22/24/26/27 3) Connect one RF signal generator to the LNAINL (LNAINH) SMA connector for cellular (PCS) band testing. Do not turn on the generator’s output. Set the generator for an output frequency of 881MHz (1960MHz) for cellular (PCS) band operation. Set the power level to -25dBm. Evaluate: MAX2320/21/22/24/26/27 MAX2320/21/22/24/26/27 Evaluation Kits Table 5. LO Connector and LO Input Frequency Selection DEVICE AND BAND OF OPERATION LO CONNECTOR LO INPUT FREQUENCY (MHz) MAX2320/MAX2327 Cellular LOINL 1091 MAX2320/MAX2327 FM LOINL 991 MAX2320/MAX2327 PCS LOINH 1750 MAX2321 Cellular LOINH 1091 MAX2321 FM LOINL 991 MAX2321 PCS LOINH 1085 MAX2322 PCS, JU6 shunt at LOX2N position LOINH 1750 MAX2322 PCS, JU6 shunt at FMMXR position LOINH 1085 MAX2324 Cellular LOINL 1091 MAX2324 FM LOINL 991 MAX2326 Cellular LOINH 2182 MAX2326 FM LOINL 991 MAX2326 PCS LOINH 2170 6) Turn on both RF signal generators. In FM mode, the spectrum analyzer should read about -15dBm at 110MHz. In all other modes, the peak should be about -13dBm at 210MHz. Be sure to account for cable losses (between 0.5dB and 2dB) and circuit board losses (approximately 0.5dB) when computing gain and noise figure. 10 Layout The EV kit PC board can serve as a guide for layout using the MAX2320/21/22/24/26/27. Keep traces carrying RF signals as short as possible to minimize radiation and insertion loss due to the PC board. Keep the differential mixer output traces together and of equal length to ensure signal amplitude balance. Solder the entire bottom side slug evenly to the board ground plane for best RF performance. Run the input trace to the PCS LNA on the top layer of the PC board avoiding via-induced coupling. Minimize the parallel length of the cellular LNA input trace with the PCS LNA input trace. ______________________________________________________________________________________ MAX2320/21/22/24/26/27 Evaluation Kits Evaluate: MAX2320/21/22/24/26/27 1.0" 1.0" Figure 4. MAX2320/21/22/24/26/27 EV Kits Component Placement Guide—Component Side 1.0" Figure 5. MAX2320/21/22/24/26/27 EV Kits Component Placement Guide—Solder Side 1.0" Figure 6. MAX2320/21/22/24/26/27 EV Kits PC Board Layout— Component Side Figure 7. MAX2320/21/22/24/26/27 EV Kits PC Board Layout— Ground Plane 2 ______________________________________________________________________________________ 11 Evaluate: MAX2320/21/22/24/26/27 MAX2320/21/22/24/26/27 Evaluation Kits 1.0" 1.0" Figure 8. MAX2320/21/22/24/26/27 EV Kits PC Board Layout— Ground Plane 3 Figure 9. MAX2320/21/22/24/26/27 EV Kits PC Board Layout— Solder Side Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2000 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.