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19-1535; Rev 1; 6/00
MAX2320/21/22/24/26/27 Evaluation Kits
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. o 50 SMA Ports for Easy Testing o +2.7V to +3.6V Single-Supply Operation o All Critical Matching Components Included o Fully Assembled and Tested
Features
Evaluate: MAX2320/21/22/24/26/27
MAX2320/21/26/27 EV Kits Component List
DESIGNATION QTY C1, C32 C2 C6, C11, C15, C18, C20, C28 2 1 6 4 2 1 1 DESCRIPTION 1.0pF 0.1pF ceramic caps (0603) Murata GRM39COG010B50V 2.7pF 0.1pF ceramic cap (0603) Murata GRM39COG2R7B50V 100pF 5% ceramic caps (0603) Murata GRM39COG101J50V 6800pF 5% ceramic caps (0603) Murata GRM39X7R682J50V 22pF 5% ceramic caps (0603) Murata GRM39COG220J50V 0.033F 10% ceramic cap (0603) Murata GRM39X7R333K50V 4.7pF 0.1pF ceramic cap (0402) Murata GRM36COG4R7B50V 10F 20%,16V tantalum capacitor AVX TAJB106M016 or Sprague 293D106X0010B 3.3pF 0.1pF ceramic caps (0603) Murata GRM39COG3R3B50V or 3.3pF 0.25pF ceramic caps (0603) Murata GRM39COG3R3C50V 0.01F 5% ceramic caps (0603) Murata GRM39X7R103J50V 1000pF 5% ceramic caps (0603) Murata GRM39X7R102J50V 1.5pF 0.1pF ceramic cap (0603) Murata GRM39COG1R5B50V 18pF 5% ceramic cap (0603) Murata GRM39COG1180J50V
Ordering Information
PART MAX2320EVKIT MAX2321EVKIT MAX2322EVKIT MAX2324EVKIT MAX2326EVKIT MAX2327EVKIT *EP = Exposed paddle TEMP. RANGE -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C IC PACKAGE 20 TSSOP-EP* 20 TSSOP-EP 20 TSSOP-EP 20 TSSOP-EP 20 TSSOP-EP 20 TSSOP-EP
C4, C5, C8, C34 C7, C17 C9 C10
C12
1
Component Suppliers
SUPPLIER AVX Coilcraft EFJohnson Kamaya Murata Electronics Sprague Toko PHONE 803-946-0690 847-639-6400 402-474-4800 219-489-1533 800-831-9172 603-224-1961 408-432-8281 FAX 803-626-3123 803-639-1469 URL www. avxcorp.com www. coilcraft.com C13, C14, C23 3
C16, C19, C21, C22 C24-C27, C29 C31 C35
4 5 1 1
www. 402-474-4858 efjohnson.com 219-489-2261 814-238-0490 603-224-1430 408-943-9790 www. kamaya.com www. murata.com www. vishay.com www. toko.com
________________________________________________________________ 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.
MAX2320/21/22/24/26/27 Evaluation Kits Evaluate: MAX2320/21/22/24/26/27
MAX2320/21/26/27 EV Kits Component List (continued)
DESIGNATION L1 L2 L3 L4, L5 L6 L7 L8 MAX2320/ 26/27 L9 MAX2321 L10 MAX2320/ 26/27 MAX2327 R2 1 1 1 -- 1 8.2nH 5% inductor (0603) Murata LQG11A8N2J00 1.65nH air core Coilcraft 0906-2 20k 5% resistor (0402) Kamaya RMC16S-203JT Not installed MAX2320 20k 5% resistor (0603) Kamaya RMC16-203JT U1 MAX2326 MAX2327 1 1 MAX2326EUP, 20-pin TSSOP-EP MAX2327EUP, 20-pin TSSOP-EP MAX2321 1 1 MAX2320EUP, 20-pin TSSOP-EP MAX2321EUP, 20-pin TSSOP-EP QTY 1 1 1 2 1 1 1 -- DESCRIPTION 1.8nH 10% inductor (0603) Coilcraft 0603CS-1N8XKBC 6.8nH 5% inductor (0603) Murata LQG11A6N8J00 330nH 5% inductor (1008) Coilcraft 1008CS-331XJBC 110nH 5% inductors (0603) Coilcraft 0603CS-R11XJBC 3.85nH 10% inductor Coilcraft 0906-4-10 4.7nH 0.3nH inductor (0603) Toko LL1608-FH4N7S 5.6nH 0.5nH inductor (0603) Murata LQW1608A5N6D00 Not installed DESIGNATION R3, R4 R5 R6, R7, R8, R10 R9 R11 T1 LNAINH, LNAOUTH, LNAINL, LNAOUTL, LOLIN, LOHIN, LOOUTH, LOOUTL, FMOUT, CDMAOUT, MIXINL, MIXINH GND, VCC JU1-JU4, JU6 JU5, JU8 None QTY 2 1 4 1 1 1 DESCRIPTION 51 5% resistors (0603) Kamaya RMC16-51RJT 2k 5% resistor (0603) Kamaya RMC16-202JT 1k 5% resistors (0603) Kamaya RMC16-102JT 8.2k 5% resistor (0603) Kamaya RMC16-822JT 30 5% resistor (0603) Kamaya RMC16-30RJT Balun transformer (B5F type) Toko 458DB-1011
12
SMA connectors (PC edge mount) EFJohnson 142-0701-801
2 5 2 7
Test points 3-pin headers 2-pin headers Shunts (JU1-JU6, JU8)
R1
2
_______________________________________________________________________________________
MAX2320/21/22/24/26/27 Evaluation Kits
MAX2322 EV Kit Component List
DESIGNATION QTY C1, C32 C2, C3, C5, C6, C9, C10, C18, C22, C23, C30 C7, C17 C4, C8 C9 C11, C15, C20 2 DESCRIPTION 1.0pF 0.1pF ceramic caps (0603) Murata GRM39COG010B50V Not installed 22pF 5% ceramic capacitors (0603) Murata GRM39COG220J50V 6800pF 5% ceramic caps (0603) Murata GRM39X7R082J50V 0 resistor Kamaya RMC16-0R0JT 100pF 5% ceramic caps (0603) Murata GRM39COG101J50V 10F 20%, 16V, tantalum capacitor AVX TAJB106M016 or Sprague 293D106X0010B 3.3pF 0.1pF ceramic caps (0603) Murata GRM39COG3R3B50V or 3.3pF 0.25pF ceramic caps (0603) Murata GRM39COG3R3C50V 0.01F 5% ceramic caps (0603) Murata GRM39X7R103J50V 1000pF 5% ceramic caps (0603) Murata GRM39X7R102J50V 1.5pF 0.1pF ceramic cap (0603) Murata GRM39COG1R5B50V 33pF 5% ceramic capacitor (0402) Murata GRM36COG330J50V 1.8nH 10% inductor (0603) Coilcraft 0603CS-1N8XKBC Not installed 110nH 5% inductors (0603) Coilcraft 0603CS-R11XJBC DESIGNATION QTY L8 L10 R1 R2 R3 R4 3 R5 R6, R7, R8, R10 R9 R11 T1 LNAINH, LNAOUTH, LOHIN, LOOUTH, CDMAOUT, MIXINH GND, VCC JU1-JU4, JU6 L2, L3, L6, L7, L9 L4, L5 -- 2 JU5, JU8 None U1 1 1 1 1 1 -- 1 4 1 1 1 DESCRIPTION 5.6nH 0.5nH inductor (0603) Murata LQW1608A5N6D00 1.65nH air core Coilcraft 0906-2 20k 5% resistor (0402) Kamaya RMC16S-203JT 20k 5% resistor (0603) Kamaya RMC16-203JT 51 5% resistor (0603) Kamaya RMC16-51RJT Not installed 2k 5% resistor (0603) Kamaya RMC16-202JT 1k 5% resistors (0603) Kamaya RMC16-102JT 8.2k 5% resistor (0603) Kamaya RMC16-822JT 30 5% resistor (0603) Kamaya RMC16-30RJT Balun transformer (B5F type) Toko 458DB-1011
Evaluate: MAX2320/21/22/24/26/27
--
2 20 1
C12
1
C13, C14
2
C16, C19, C21 C24-C29 C31 C33 L1
3 6 1 1 1
6
SMA connectors (PC edge mount) EFJohnson 142-0701-801
2 5 2 7 1
Test points 3-pin headers 2-pin headers Shunts (JU1-JU6, JU8) MAX2322EUP, 20-pin TSSOP-EP
_______________________________________________________________________________________
3
MAX2320/21/22/24/26/27 Evaluation Kits Evaluate: MAX2320/21/22/24/26/27
MAX2324 EV Kit Component List
DESIGNATION QTY C1, C4, C7, C8, C17, C20, C21, C31, C32, C33 C2 C6, C11, C15, C18, C28 C5, C30 C9 C10 -- DESCRIPTION Not installed 2.7pF 0.1pF ceramic cap (0603) Murata GRM39COG2R7B50V 100pF 5% ceramic caps (0603) Murata GRM39COG101J50V 6800pF 5% ceramic caps (0603) Murata GMR39X7R682J50V 0.033F 10% ceramic cap (0603) Murata GRM39X7R333K50V 4.7pF 0.1pF ceramic cap (0402) Murata GRM36COG4R7B50V 10F 20%, 16V, tantalum capacitor AVX TAJB106M016 or Sprague 293D106X0010B 3.3pF 0.1pF ceramic caps (0603) Murata GRM39COG3R3B50V or 3.3pF 0.25pF ceramic caps (0603) Murata GRM39COG3R3C50V 0.01F 5% ceramic capacitors (0603) Murata GRM39X7R103J50V 1000pF 5% ceramic capacitors (0603) Murata GRM39X7R102J50V 18pF 5% ceramic capacitor (0603) Murata GRM39COG180J50V Not installed 6.8nH 5% inductor (0603) Murata LQG11A6N8J00 330nH 5% inductor (1008) Coilcraft 1008CS-331XJBC 110nH 5% inductors Coilcraft 0603CS-R11XJBC 3.85nH 10% inductor Coilcraft 0906-4-10 DESIGNATION QTY L10 R1 R2 R3 R4 R5 R6, R7, R8, R10 R9 R11 T1 C16, C19, C22 C24-C27, C29 C35 L1, L7, L8, L9 L2 L3 L4, L5 L6 3 5 1 -- 1 1 2 1 LNAINL, LNAOUTL, LOLIN, LOOUTL, FMOUT, CDMAOUT, MIXINL GND, VCC JU1-JU4, JU6 JU5, JU8 None U1 1 1 1 -- 1 1 4 1 1 1 DESCRIPTION 4.7nH 0.3nH inductor (0603) Toko LL1608-FH4N7S 20k 5% resistor (0402) Kamaya RMCS16S-203JT 20k 5% resistor (0603) Kamaya RMC16-203JT Not installed 51 5% resistor (0603) Kamaya RMC16-51RJT 2k 5% resistor (0603) Kamaya RMC16-202JT 1k 5% resistors (0603) Kamaya RMC16-102JT 8.2k 5% resistor (0603) Kamaya RMC16-8252JT 30 5% resistor (0603) Kamaya RMC16-30RJT Balun transformer (B5F type) Toko 458DB-1011
1 5 2 1 1
C12
1
C13, C14, C23
3
7
SMA connectors (PC edge mount) EFJohnson 142-0701-801
2 5 2 7 1
Test points 3-pin headers 2-pin headers Shunts (JU1-JU6, JU8) MAX2324EUP, 20-pin TSSOP-EP
4
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MAX2320/21/22/24/26/27 Evaluation Kits
_________________________________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. 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 DESCRIPTION Capable of delivering at least 0dBm of output power up to 2.5GHz (HP 8648C or equivalent) Capable of covering the operating frequency range of the devices as well as a few harmonics (HP 8561E, for example) Capable of up to 100mA at +2.7V to +3.6V For measuring the supply current (optional) To measure small-signal return loss and gain (optional, HP 8753D, for example)
Evaluate: MAX2320/21/22/24/26/27
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.
RF Spectrum Analyzer
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.
Power Supply Ammeter
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.
Network Analyzer
Table 1. MAX2320/MAX2321/MAX2326 Mode Selection
JU2 SHUNT POSITION CELL CELL CELL CELL PCS PCS PCS PCS JU1 SHUNT POSITION HLIN HLIN LLIN LLIN HLIN HLIN LLIN LLIN JU3 SHUNT POSITION HGAIN LGAIN HGAIN LGAIN HGAIN LGAIN HGAIN LGAIN MODE Cellular band, high gain, high linearity Cellular band, low gain, high linearity Cellular band, high gain, low linearity Cellular band FM PCS band, high gain, high linearity PCS band, low gain, high linearity PCS band, high gain, low linearity Shutdown
Table 2. MAX2322 Mode Selection
JU2 SHUNT POSITION* PCS CELL CELL CELL CELL JU1 SHUNT POSITION Don't care HLIN HLIN LLIN LLIN JU3 SHUNT POSITION Don't care HGAIN LGAIN HGAIN LGAIN Shutdown PCS band, high gain, high linearity PCS band, low gain, high linearity PCS band, high gain, low linearity Not used MODE
*JU2 is connected to the MAX2322 SHDN pin.
_______________________________________________________________________________________
5
Evaluate: MAX2320/21/22/24/26/27
MAX2320/21/22/24/26/27 Evaluation Kits
Figure 1. MAX2320/21/26/27 EV Kits Schematic
R11 30
L1 1.8nH C20 100pF L8 5.6nH SMA MIXINH C34 6800pF C9 0.033F SMA MIXINL C31 1.5pF C8 6800pF C21 0.01F SMA LNAOUTH 1 LNAOUTH MIXINH 20 C28 100pF 2 LNAOUTL 19 18 C30 OPEN JU8 VCC L5 110nH L4 110nH 1 R5 2k C19 0.01F 6 SMA CDMAOUT 4 T1 C14 3.3pF JU4 VCC JU6 C27 1000pF 13 8 GAIN (MODE) LOLOUT 9 LOLIN 12 C18 100pF R4 51 11 LOHOUT VCC ( ) ARE FOR MAX2327 ONLY *MAX2321 ONLY R3 51 C15 100pF C17 22pF C35 18pF SMA LOOUTL C26 1000pF FMOUT R9 8.2k L3 330nH C29 1000pF C10 4.7pF SMA FMOUT C11 100pF VCC VCC 1 C12 10F 2 16V GND L7 4.7nH R2 20k C16 0.01F 17 C22 0.01F C1 1pF
6
U1
RBIAS 3 RLNA (N.C.) MIXINL
VCC
JU5
L2 6.8nH
SMA LNAOUTL
C2 2.7pF
R1 20k (OPEN)
C4 6800pF L10 1.65nH 4 LNAINH 16 CDMA+ (IFOUT+) C32 1pF 5 LNAINL 15 BAND VCC 7 C25 1000pF LIN (SHDN) VCC 14 C28 1000pF BUFFEN R10 VCC 1k VCC JU2 VCC R7 1k C24 1000pF R6 1k 6 CDMA- (IFOUT-) C13 2 3.3pF 3 SMA LNAINH L6 3.85nH C23 3.3pF
MAX2320 MAX2321 MAX2326 MAX2327
C5 6800pF
SMA LNAINL
JU1 VCC JU3 R8 1k
SMA LOLIN C7 22pF SMA LOHIN LOHIN L9 OPEN 8.2nH* 10
C6 100pF
_______________________________________________________________________________________
SMA LOOUTH
VCC JU5 L1 1.8nH C1 1pF 1 LNAOUTH MIXINH C31 1.5pF 2 N.C. RBIAS 3 RLNA VCC JU8 L5 110nH L4 110nH 1 2 3 C14 3.3pF T1 4 VCC VCC C11 100pF 1 C12 10F 2 16V GND C27 1000pF LOX2 GAIN N.C. 9 N.C. 12 R9 8.2k 13 VCC JU6 C29 1000pF C19 0.01F C13 3.3pF 18 R2 20k C16 0.01F CDMA+ 16 R5 2k 17 N.C. C33 33pF R1 20k C4 6800pF 4 LNAINH C32 1pF 5 N.C. 15 SHDN VCC 7 C25 1000pF 8 C26 1000pF LIN VCC 14 C28 1000pF BUFFEN R10 VCC 1k JU4 VCC R6 1k 6 C24 1000pF CDMAL10 1.65nH 19 20 SMA MIXINH L8 5.6nH C8 6800pF C20 100pF C21 0.01F
R11 30
Figure 2. MAX2322 EV Kit Schematic
SMA LNAOUTH
U1 MAX2322
SMA LNAINH
6
SMA CDMAOUT
JU2
VCC R7 1k
JU1 VCC R8 1k
JU3
C7 22pF 10 LOHIN
SMA LOHIN L9 OPEN
LOHOUT
11 VCC R3 51 C15 100pF C17 22pF
Evaluate: MAX2320/21/22/24/26/27
_______________________________________________________________________________________
SMA LOOUTH
MAX2320/21/22/24/26/27 Evaluation Kits
7
Evaluate: MAX2320/21/22/24/26/27
MAX2320/21/22/24/26/27 Evaluation Kits
Figure 3. MAX2324 EV Kit Schematic
R11 30
L1 OPEN C20 OPEN C21 OPEN SMA LNAOUTH 1 N.C. N.C. C30 6800pF C9 0.033F SMA MIXINL L7 OPEN L10 4.7nH JU8 VCC L5 110nH L4 110nH 1 R5 2k C19 0.01F 6 SMA CDMAOUT C13 2 3.3pF 3 C14 3.3pF JU4 VCC JU6 C27 1000pF R9 8.2k GAIN FMOUT 13 C18 100pF 12 R4 51 11 N.C. VCC C15 100pF C35 18pF SMA LOOUTL L3 330nH C29 1000pF C10 4.7pF SMA FMOUT C11 100pF T1 4 VCC VCC 1 C12 10F 2 16V GND 20 C28 100pF 2 LNAOUTL MIXINL RBIAS 3 RLNA 18 R2 20k C16 0.01F CDMA+ 16 17 19 C22 0.01F C1 OPEN R1 20K
8
U1 MAX2324
4 MODEOUT L6 3.85nH 5 LNAINL 15 SHDN VCC 7 C25 1000pF 8 C26 1000pF 9 LOLIN LOLOUT LIN VCC 14 C28 100pF BUFFEN R10 VCC 1k VCC JU2 C24 1000pF R6 1k 6 CDMAC23 3.3pF R7 1k VCC JU3 R8 1k 10 N.C.
VCC
JU5
L2 6.8nH
SMA LNAOUTL
C2 2.7pF
C5 6800pF
SMA LNAINL
VCC
JU1
SMA LOLIN
_______________________________________________________________________________________
C6 100pF
MAX2320/21/22/24/26/27 Evaluation Kits
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. 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.
Evaluate: MAX2320/21/22/24/26/27
Table 3. MAX2324 Mode Selection
JU2 SHUNT POSITION* PCS CELL CELL CELL CELL JU1 SHUNT POSITION Don't care HLIN HLIN LLIN LLIN JU3 SHUNT POSITION Don't care HGAIN LGAIN HGAIN LGAIN Shutdown Cellular band, high gain, high linearity Cellular band, low gain, high linearity Cellular band, high gain, low linearity FM MODE
*JU2 is connected to the MAX2324 SHDN pin.
Table 4. MAX2327 Mode Selection
JU2 SHUNT POSITION Don't care CELL CELL PCS PCS JU1 SHUNT POSITION* LLIN HLIN HLIN HLIN HLIN JU3 SHUNT POSITION Don't care HGAIN LGAIN HGAIN LGAIN Shutdown Cellular band, digital mixer output Cellular band, FM PCS band, digital mixer output Not used MODE
*JU1 is connected to the MAX2327 SHDN pin. _______________________________________________________________________________________ 9
MAX2320/21/22/24/26/27 Evaluation Kits Evaluate: MAX2320/21/22/24/26/27
Table 5. LO Connector and LO Input Frequency Selection
DEVICE AND BAND OF OPERATION MAX2320/MAX2327 Cellular MAX2320/MAX2327 FM MAX2320/MAX2327 PCS MAX2321 Cellular MAX2321 FM MAX2321 PCS MAX2322 PCS, JU6 shunt at LOX2N position MAX2322 PCS, JU6 shunt at FMMXR position MAX2324 Cellular MAX2324 FM MAX2326 Cellular MAX2326 FM MAX2326 PCS LO CONNECTOR LOINL LOINL LOINH LOINH LOINL LOINH LOINH LOINH LOINL LOINL LOINH LOINL LOINH LO INPUT FREQUENCY (MHz) 1091 991 1750 1091 991 1085 1750 1085 1091 991 2182 991 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.
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.
10
______________________________________________________________________________________
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
Figure 5. MAX2320/21/22/24/26/27 EV Kits Component Placement Guide--Solder Side
1.0"
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
MAX2320/21/22/24/26/27 Evaluation Kits Evaluate: MAX2320/21/22/24/26/27
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 (c) 2000 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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