19-3908; Rev 0; 12/05 KIT ATION EVALU E L B A IL AVA 1700MHz to 3000MHz High-Linearity, Low LO Leakage Base-Station Rx/Tx Mixer Features The MAX2043 high-linearity passive upconverter or downconverter mixer is designed to provide approximately +31dBm of IIP3, +67dBc of LO ± 2IF spurious rejection, 7.8dB of noise figure, 7.5dB of conversion loss, and -52dBm of LO leakage for UMTS/WCDMA, DCS, PCS, and WiMAX base-station applications. With a 1700MHz to 3000MHz RF frequency range and a 1900MHz to 3000MHz LO frequency range, this mixer is ideal for high-side LO injection architectures. In addition to offering excellent linearity and noise performance, the MAX2043 also yields a high level of component integration. The MAX2043 integrates baluns in the RF and LO ports, a dual-input LO-selectable switch, an LO buffer, and a double-balanced mixer. The onchip baluns allow for a single-ended RF input for downconversion (or RF output for upconversion), and single-ended LO inputs. The MAX2043 requires a typical 0dBm LO drive, and supply current is rated at a typical 108mA level. The IF port is DC-coupled, making it ideal for direct conversion or modulation. As an upconverter, the device has low output noise floor of less than -160dBc/Hz (-160dBm/Hz when transmitting 0dBm linear RF power). ♦ +31dBm Typical 3rd-Order Input Intercept Point The MAX2043 is available in a 36-pin thin QFN package (6mm x 6mm) with an exposed paddle. Electrical performance is guaranteed over the extended -40°C to +85°C temperature range. ♦ External Current-Setting Resistor Provides Option for Operating Mixer in Reduced Power/Reduced Performance Mode Applications ♦ +23dBm Typical Input 1dB Compression Point ♦ 1700MHz to 3000MHz RF Frequency Range ♦ 1900MHz to 3000MHz LO Frequency Range ♦ DC to 350MHz IF Frequency Range ♦ 7.5dB Typical Conversion Loss ♦ 7.8dB Typical Noise Figure ♦ -160dBc/Hz LO Noise ♦ -52dBm LO Leakage at RF Port ♦ 67dBc LO ± 2IF Spurious Suppression ♦ -3dBm to +6dBm LO Drive ♦ +5V Single-Supply Operation ♦ Built-In SPDT LO Switch with 43dB LO1 to LO2 Isolation and 50ns Switching Time ♦ Internal RF and LO Baluns for Single-Ended Inputs ♦ Lead-Free Package Available UMTS/WCDMA and 3G Base Stations Ordering Information DCS 1800 and EDGE Base Stations PCS 1900 and EDGE Base Stations TEMP RANGE PINPACKAGE MAX2043ETX -40°C to +85°C 36 TQFN-EP* (6mm x 6mm) T3666-2 MAX2043ETX-T -40°C to +85°C 36 TQFN-EP* (6mm x 6mm) T3666-2 Private Mobile Radio MAX2043ETX+ -40°C to +85°C 36 TQFN-EP* (6mm x 6mm) T3666-2 Digital and Spread-Spectrum Communication Systems MAX2043ETX+T -40°C to +85°C 36 TQFN-EP* (6mm x 6mm) T3666-2 cdmaOneTM and cdma2000® Base Stations WiMAX Base Stations and Customer Premise Equipment Point-to-Point Microwave Systems PART Wireless Local Loop Microwave Links cdmaOne is a trademark of CDMA Development Group. cdma2000 is a registered trademark of Telecommunications Industry Association. PKG CODE *EP = Exposed paddle. +Denotes lead-free package. -T = Tape-and-reel package. Pin Configuration and Typical Application Circuit appear at end of data sheet. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX2043 General Description MAX2043 1700MHz to 3000MHz High-Linearity, Low LO Leakage Base-Station Rx/Tx Mixer ABSOLUTE MAXIMUM RATINGS VCC to GND ...........................................................-0.3V to +5.5V RF (RF is DC shorted to GND through balun).....................50mA LO1, LO2 to GND ...............................................................±0.3V RFTAP, IF+, IF- to GND ..............................-0.3V to (VCC + 0.3V) LOSEL to GND ...........................................-0.3V to (VCC + 0.3V) RF, IF, and LO Input Power** .........................................+20dBm LO_ADJ Current....................................................................5mA Continuous Power Dissipation (TA = +70°C) 36-Pin TQFN (derated 30.3mW/°C above +70°C) ......2200mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C θJC ................................................................................+7.4°C/W θJA .................................................................................+38°C/W Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C **Maximum reliable continuous input power applied to the RF, IF, and LO ports of this device is +15dBm from a 50Ω source. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. DC ELECTRICAL CHARACTERISTICS (MAX2043 Typical Application Circuit, VCC = +4.75V to +5.25V, no RF signals applied, IF+ and IF- DC grounded through a transformer, TC = -40°C to +85°C. A 360Ω resistor is connected from LO_ADJ to GND. Typical values are at VCC = +5V, TC = +25°C, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 4.75 5 5.25 V 108 140 mA 0.8 V Supply Voltage VCC Supply Current ICC LOSEL Logic 0 Input Voltage VIL LOSEL Logic 1 Input Voltage VIH 2 IIH and IIL -10 LOSEL Logic Input Current Total supply current V +10 µA AC ELECTRICAL CHARACTERISTICS (Downconverter Operation) (MAX2043 Typical Application Circuit, VCC = +4.75V to +5.25V, RF and LO ports are driven from 50Ω sources, PLO = -3dBm to +3dBm, PRF = 0dBm, fRF = 1700MHz to 3000MHz, fLO = 1900MHz to 3000MHz, fIF = 200MHz, fRF < fLO, TC = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = +5V, PRF = 0dBm, PLO = 0dBm, fRF = 1900MHz, fLO = 2100MHz, fIF = 200MHz, TC = +25°C, unless otherwise noted.) (Note 1) MAX UNITS RF Frequency PARAMETER fRF 1700 3000 MHz LO Frequency fLO 1900 3000 MHz IF Frequency (Notes 1, 2) fIF 0 350 MHz Small-Signal Conversion Loss Conversion Loss Variation from Nominal 2 SYMBOL LC CONDITIONS MIN TYP DCS 1800: PRF = -10dBm, PLO = 0dBm, fIF = 200MHz, fRF = 1710MHz to 1785MHz 7.5 PCS 1900: PRF = -10dBm, PLO = 0dBm, fIF = 200MHz, fRF = 1850MHz to 1910MHz 7.5 UMTS 2100: PRF = -10dBm, PLO = 0dBm, fIF = 200MHz, fRF = 1920MHz to 1980MHz 7.5 DCS 1800: fRF = 1710MHz to 1785MHz ±0.5 PCS 1900: fRF = 1850MHz to 1910MHz ±0.5 UMTS 2100: fRF = 1920MHz to 1980MHz ±0.5 _______________________________________________________________________________________ dB dB 1700MHz to 3000MHz High-Linearity, Low LO Leakage Base-Station Rx/Tx Mixer (MAX2043 Typical Application Circuit, VCC = +4.75V to +5.25V, RF and LO ports are driven from 50Ω sources, PLO = -3dBm to +3dBm, PRF = 0dBm, fRF = 1700MHz to 3000MHz, fLO = 1900MHz to 3000MHz, fIF = 200MHz, fRF < fLO, TC = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = +5V, PRF = 0dBm, PLO = 0dBm, fRF = 1900MHz, fLO = 2100MHz, fIF = 200MHz, TC = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL Conversion Loss Variation Over Temperature Noise Figure, Single Sideband 3rd-Order Input Intercept Point MIN TC = -40°C to +85°C NF Noise Figure Under Blocking Condition (Note 3) Input Compression Point (Note 4) CONDITIONS IP1dB IIP3 3rd-Order Input Intercept Point Variation TYP MAX 0.0075 UNITS dB/°C TC = +25°C, DCS 1800: fRF = 1710MHz to 1785MHz 7.8 TC = +25°C, PCS 1900: fRF = 1850MHz to 1910MHz 7.8 TC = +25°C, UMTS 2100: fRF = 1920MHz to 1980MHz 7.8 PBLOCKER = +5dBm at 2100MHz, fRF = 2000MHz, fLO = 2190MHz, PLO = 0dBm 19 dB +23 dBm 31 dBm ±0.75 dB 63 dBc 67 dBc High-side injection High-side injection, fRF1 = 1900MHz, fRF2 = 1901MHz, 0dBm per tone at RF port TC = -40°C to +85°C dB fRF = 1900MHz, fLO = 2100MHz, 2LO - 2RF Spur fSPUR = 2000MHz, PRF = 0dBm, PLO = 0dBm fRF = 1900MHz, fLO = 2100MHz, 3LO - 3RF Spur fSPUR = 2033.333MHz, PRF = 0dBm, PLO = 0dBm LO Drive (Note 5) PLO -3 0 +6 dBm LO1-to-LO2 Port Isolation PLO1 = PLO2 = +3dBm, fIF = 200MHz (Note 6) 43 LO Leakage at RF Port PLO = +3dBm, fLO = 2260MHz -52 LO Switching Time 50% of LOSEL to IF settled within 2 degrees 50 ns LO Leakage at IF Port PLO = +3dBm -35 dBm RF-to-IF Isolation PLO = +3dBm 38 dB RF Input Return Loss LO on and IF terminated 17 dB LO Input Return Loss RF and IF terminated 14 dB IF Return Loss RF and LO terminated in 50Ω, fIF = 200MHz (Note 7) 20 dB dB -38 dBm _______________________________________________________________________________________ 3 MAX2043 AC ELECTRICAL CHARACTERISTICS (Downconverter Operation) (continued) AC ELECTRICAL CHARACTERISTICS (Upconverter Operation) (MAX2043 Typical Application Circuit, VCC = +4.75V to +5.25V, PLO = -3dBm to +3dBm, PIF = 0dBm, fRF = 1700MHz to 3000MHz, fLO = 1900MHz to 3000MHz, fIF = 200MHz, fRF = fLO - fIF, TC = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = +5V, PIF = 0dBm, PLO = 0dBm, fRF = 2170MHz, fLO = 2260MHz, fIF = 90MHz, TC = +25°C, unless otherwise noted.) (Note 3) PARAMETER SYMBOL Input Compression Point CONDITIONS MIN TYP IP1dB MAX UNITS 23 dBm 28 dBm Two tones: fIF1 = 90MHz, 3rd-Order Input Intercept Point fIF2 = 91MHz, IIP3 PIF = +5dBm/tone, fLO = 2230MHz, PLO = 0dBm LO ± 2IF Spur LO ± 3IF Spur Output Noise Floor LO - 2IF 60 67 LO + 2IF 60 69 LO - 3IF 63 LO + 3IF 64 POUT = 0dBm dBc dBc -160 dBm/Hz Note 1: All limits reflect losses of external components. Output measurement taken at IF port of Typical Application Circuit. Note 2: The lower IF frequency limit of 0MHz is limited by the external IF transformer. Note 3: Measured with external LO source noise filtered so its noise floor is not a contributor. Measured with: fRF = 2000MHz, fBLOCKER = 2100MHz, fLO = 2190MHz, using a 190MHz SAW filter on the IF port. This specification reflects the effects of all SNR degradations in the mixer, including the LO noise as defined in Maxim Application Note 2021. Note 4: Maximum reliable continuous input power applied to the RF or IF port of this device is +15dBm from a 50Ω source. Note 5: Typical Operating Characteristics show LO drive extended to +6dBm Note 6: Measured IF port at IF frequency. fLO1 and fLO2 are offset by 1MHz. Note 7: IF return loss can be optimized by external matching components. Typical Operating Characteristics (MAX2043 Typical Application Circuit, C2 not installed, RFTAP = GND, VCC = +5.0V, PLO = 0dBm, LOSEL = “0” (LO2 selected), PRF = 0dBm, fLO > fRF, fIF = 200MHz, unless otherwise noted.) Downconverter Curves CONVERSION LOSS vs. RF FREQUENCY TC = +25°C PLO = -3dBm, 0dBm, +3dBm 5 5 1500 1700 1900 2100 RF FREQUENCY (MHz) 2300 7 6 VCC = 4.75V, 5.0V, 5.25V 5 4 3 4 4 4 7 6 8 CONVERSION LOSS (dB) 7 TC = -40°C 8 CONVERSION LOSS (dB) 8 CONVERSION LOSS vs. RF FREQUENCY 9 MAX2043 toc02 MAX2043 toc01 TC = +85°C 6 9 MAX2043 toc03 CONVERSION LOSS vs. RF FREQUENCY 9 CONVERSION LOSS (dB) MAX2043 1700MHz to 3000MHz High-Linearity, Low LO Leakage Base-Station Rx/Tx Mixer 1500 1700 1900 2100 RF FREQUENCY (MHz) 2300 1500 1700 1900 2100 RF FREQUENCY (MHz) _______________________________________________________________________________________ 2300 1700MHz to 3000MHz High-Linearity, Low LO Leakage Base-Station Rx/Tx Mixer Downconverter Curves INPUT IP3 vs. RF FREQUENCY INPUT IP3 vs. RF FREQUENCY TC = +85°C 33 35 MAX2043 toc05 MAX2043 toc04 35 PLO = +3dBm 33 33 MAX2043 toc06 INPUT IP3 vs. RF FREQUENCY 35 VCC = 5.25V 27 25 29 PLO = -3dBm 27 1900 2100 2300 1500 1700 RF FREQUENCY (MHz) 2100 1500 2300 1700 NOISE FIGURE vs. RF FREQUENCY 10 NOISE FIGURE (dB) 9 TC = +25°C 8 7 9 10 VCC = 5.0V PLO = -3dBm, 0dBm, +3dBm 8 7 9 VCC = 5.25V 8 7 TC = -40°C 6 5 5 1900 2050 2200 2350 2500 1600 RF FREQUENCY (MHz) TC = +85°C 65 TC = -40°C 55 2200 2350 1600 2500 PRF = 0dBm PLO = +3dBm 75 1750 1900 2050 2200 2350 2500 RF FREQUENCY (MHz) 2LO - 2RF RESPONSE vs. RF FREQUENCY 2LO - 2RF RESPONSE (dBc) 2LO - 2RF RESPONSE (dBc) 75 2050 85 MAX2043 toc10 PRF = 0dBm TC = +25°C 1900 RF FREQUENCY (MHz) 2LO - 2RF RESPONSE vs. RF FREQUENCY 85 1750 65 PLO = 0dBm 55 2LO - 2RF RESPONSE vs. RF FREQUENCY 85 2LO - 2RF RESPONSE (dBc) 1750 MAX2043 toc11 1600 VCC = 4.75V 6 6 5 2300 11 MAX2043 toc08 11 MAX2043 toc07 TC = +85°C 2100 NOISE FIGURE vs. RF FREQUENCY NOISE FIGURE vs. RF FREQUENCY 10 1900 RF FREQUENCY (MHz) RF FREQUENCY (MHz) 11 NOISE FIGURE (dB) 1900 NOISE FIGURE (dB) 1700 VCC = 5.0V 27 23 23 1500 VCC = 4.75V 29 25 25 23 31 MAX2043 toc09 TC = -40°C PLO = 0dBm PRF = 0dBm 75 MAX2043 toc12 29 31 INPUT IP3 (dBm) 31 INPUT IP3 (dBm) INPUT IP3 (dBm) TC = +25°C VCC = 5.25V 65 VCC = 5.0V 55 PLO = -3dBm VCC = 4.75V 45 45 1500 1700 1900 2100 RF FREQUENCY (MHz) 2300 45 1500 1700 1900 2100 RF FREQUENCY (MHz) 2300 1500 1700 1900 2100 2300 RF FREQUENCY (MHz) _______________________________________________________________________________________ 5 MAX2043 Typical Operating Characteristics (continued) (MAX2043 Typical Application Circuit, C2 not installed, RFTAP = GND, VCC = +5.0V, PLO = 0dBm, LOSEL = “0” (LO2 selected), PRF = 0dBm, fLO > fRF, fIF = 200MHz, unless otherwise noted.) Typical Operating Characteristics (continued) (MAX2043 Typical Application Circuit, C2 not installed, RFTAP = GND, VCC = +5.0V, PLO = 0dBm, LOSEL = “0” (LO2 selected), PRF = 0dBm, fLO > fRF, fIF = 200MHz, unless otherwise noted.) Downconverter Curves 55 PLO = +3dBm PLO = 0dBm 55 TC = -40°C 45 2300 45 1500 3LO - 3RF RESPONSE vs. RF FREQUENCY 1700 1900 2100 2300 1500 3LO - 3RF RESPONSE vs. RF FREQUENCY MAX2043 toc16 TC = +85°C PRF = 0dBm 65 TC = -40°C TC = +25°C 45 PLO = 0dBm, +3dBm 75 2100 65 PLO = -3dBm 55 2300 1500 RF FREQUENCY (MHz) TC = -40°C PLO = +3dBm 26 INPUT P1dB (dBm) 24 23 TC = +85°C 21 20 PLO = -3dBm RF FREQUENCY (MHz) 1500 2300 1700 1900 2100 27 VCC = 5.25V 26 25 2300 VCC = 5.0V 24 23 22 VCC = 4.75V 21 20 2100 VCC = 4.75V 55 INPUT P1dB vs. RF FREQUENCY 23 21 1900 65 RF FREQUENCY (MHz) 24 22 1700 VCC = 5.25V 45 2300 PLO = 0dBm 25 22 1500 VCC = 5.0V 75 INPUT P1dB vs. RF FREQUENCY TC = +25°C 25 2100 27 MAX2043 toc19 26 1900 2300 PRF = 0dBm RF FREQUENCY (MHz) INPUT P1dB vs. RF FREQUENCY 27 1700 2100 3LO - 3RF RESPONSE vs. RF FREQUENCY INPUT P1dB (dBm) 1900 1900 85 45 1700 1700 RF FREQUENCY (MHz) 85 3LO - 3RF RESPONSE (dBc) 3LO - 3RF RESPONSE (dBc) PRF = 0dBm 1500 55 RF FREQUENCY (MHz) 85 55 VCC = 4.75V, 5.0V, 5.25V 65 MAX2043 toc18 2100 RF FREQUENCY (MHz) 75 VCC = 5.25V 75 MAX2043 toc21 1900 3LO - 3RF RESPONSE (dBc) 1700 MAX2043 toc17 1500 PRF = 0dBm PLO = -3dBm 45 6 MAX2043 toc14 75 65 85 2LO - 2RF RESPONSE (dBc) TC = +25°C, +85°C PRF = 0dBm 2LO - 2RF RESPONSE vs. RF FREQUENCY LOSEL = "1" (LO1 SELECTED) MAX2043 toc20 2LO - 2RF RESPONSE (dBc) 75 65 85 2LO - 2RF RESPONSE (dBc) PRF = 0dBm TC = +25°C MAX2043 toc13 85 2LO - 2RF RESPONSE vs. RF FREQUENCY LOSEL = "1" (LO1 SELECTED) MAX2043 toc15 2LO - 2RF RESPONSE vs. RF FREQUENCY LOSEL = "1" (LO1 SELECTED) INPUT P1dB (dBm) MAX2043 1700MHz to 3000MHz High-Linearity, Low LO Leakage Base-Station Rx/Tx Mixer 20 1500 1700 1900 2100 RF FREQUENCY (MHz) 2300 1500 1700 1900 2100 RF FREQUENCY (MHz) _______________________________________________________________________________________ 2300 1700MHz to 3000MHz High-Linearity, Low LO Leakage Base-Station Rx/Tx Mixer Downconverter Curves TC = +85°C 40 TC = +25°C 50 PLO = -3dBm, 0dBm, +3dBm 40 30 30 1900 2100 2300 1700 LO FREQUENCY (MHz) 1900 2100 2300 2500 1500 1700 LO FREQUENCY (MHz) LO LEAKAGE (dBm) TC = -40°C -40 2100 2300 2500 LO LEAKAGE AT IF PORT vs. LO FREQUENCY -20 MAX2043 toc26 -20 MAX2043 toc25 TC = +25°C 1900 LO FREQUENCY (MHz) LO LEAKAGE AT IF PORT vs. LO FREQUENCY LO LEAKAGE AT IF PORT vs. LO FREQUENCY -20 -30 VCC = 4.75V, 5.0V, 5.25V 40 30 1500 2500 50 -30 PLO = -3dBm, 0dBm, +3dBm -40 MAX2043 toc27 1700 LO LEAKAGE (dBm) 1500 LO LEAKAGE (dBm) LO SWITCH ISOLATION vs. LO FREQUENCY 60 MAX2043 toc24 MAX2043 toc23 LO SWITCH ISOLATION (dB) MAX2043 toc22 LO SWITCH ISOLATION (dB) TC = -40°C 50 LO SWITCH ISOLATION vs. LO FREQUENCY 60 LO SWITCH ISOLATION (dB) LO SWITCH ISOLATION vs. LO FREQUENCY 60 -30 VCC = 4.75V, 5.0V, 5.25V -40 TC = +85°C -50 -50 1700 1900 2100 2300 2500 -50 1700 1900 LO FREQUENCY (MHz) 2300 2500 1700 1900 LO FREQUENCY (MHz) 2100 2300 2500 LO FREQUENCY (MHz) -30 TC = +25°C -40 -50 -60 -70 -20 -30 PLO = +3dBm -40 -50 PLO = 0dBm -60 PLO = -3dBm -70 TC = -40°C -80 1700 1900 2100 LO FREQUENCY (MHz) 2300 2500 -20 -30 -40 -50 VCC = 4.75V, 5.0V, 5.25V -60 -70 -80 1500 -10 LO LEAKAGE AT RF PORT (dBm) TC = +85°C LO LEAKAGE AT RF PORT (dBm) -20 -10 MAX2043 toc30 LO LEAKAGE AT RF PORT vs. LO FREQUENCY 0 MAX2043 toc29 LO LEAKAGE AT RF PORT vs. LO FREQUENCY 0 MAX2043 toc28 LO LEAKAGE AT RF PORT vs. LO FREQUENCY 0 -10 LO LEAKAGE AT RF PORT (dBm) 2100 -80 1500 1700 1900 2100 LO FREQUENCY (MHz) 2300 2500 1500 1700 1900 2100 2300 2500 LO FREQUENCY (MHz) _______________________________________________________________________________________ 7 MAX2043 Typical Operating Characteristics (continued) (MAX2043 Typical Application Circuit, C2 not installed, RFTAP = GND, VCC = +5.0V, PLO = 0dBm, LOSEL = “0” (LO2 selected), PRF = 0dBm, fLO > fRF, fIF = 200MHz, unless otherwise noted.) Typical Operating Characteristics (continued) (MAX2043 Typical Application Circuit, C2 not installed, RFTAP = GND, VCC = +5.0V, PLO = 0dBm, LOSEL = “0” (LO2 selected), PRF = 0dBm, fLO > fRF, fIF = 200MHz, unless otherwise noted.) Downconverter Curves 35 TC = -40°C 25 45 40 35 PLO = -3dBm, 0dBm, +3dBm 30 25 20 1700 1900 2100 2300 20 1500 1700 1900 2300 2100 1500 1700 1900 2100 RF FREQUENCY (MHz) RF FREQUENCY (MHz) RF PORT RETURN LOSS vs. RF FREQUENCY IF PORT RETURN LOSS vs. IF FREQUENCY LO SELECTED RETURN LOSS vs. LO FREQUENCY 15 20 PLO = -3dBm, 0dBm, +3dBm 25 10 15 VCC = 5.0V 20 VCC = 5.25V 25 VCC = 4.75V 30 30 1500 2000 2500 100 200 300 400 15 20 PLO = -3dBm 25 500 1000 1500 SUPPLY CURRENT vs. TEMPERATURE (TC) 130 MAX2043 toc37 0 120 SUPPLY CUIRRENT (mA) 5 2000 10 PLO = -3dBm, 0dBm, +3dBm 20 25 VCC = 5.25V 110 100 VCC = 5.0V 90 VCC = 4.75V 80 30 70 1000 1500 2000 2500 LO FREQUENCY (MHz) 3000 2500 LO FREQUENCY (MHz) LO UNSELECTED RETURN LOSS vs. LO FREQUENCY LO UNSELECTED RETURN LOSS (dB) PLO = 0dBm, +3dBm 10 IF FREQUENCY (MHz) RF FREQUENCY (MHz) 15 5 30 0 3000 2300 MAX2043 toc36 5 LO SELECTED RETURN LOSS (dB) LOW FREQ MATCH SET BY T1 IF PORT RETURN LOSS (dB) 10 0 MAX2043 toc35 0 MAX2043 toc34 5 8 VCC = 4.75V, 5.0V, 5.25V 30 RF FREQUENCY (MHz) 0 1000 35 25 20 1500 40 MAX2043 toc38 30 45 RF-TO-IF ISOLATION (dB) 40 RF-TO-IF ISOLATION vs. RF FREQUENCY 50 MAX2043 toc32 MAX20343 toc31 TC = +85°C TC = +25°C RF-TO-IF ISOLATION (dB) RF-TO-IF ISOLATION (dB) 45 RF-TO-IF ISOLATION vs. RF FREQUENCY 50 MAX2043 toc33 RF-TO-IF ISOLATION vs. RF FREQUENCY 50 RF PORT RETURN LOSS (dB) MAX2043 1700MHz to 3000MHz High-Linearity, Low LO Leakage Base-Station Rx/Tx Mixer -40 -15 10 35 60 TEMPERATURE (°C) _______________________________________________________________________________________ 85 3000 1700MHz to 3000MHz High-Linearity, Low LO Leakage Base-Station Rx/Tx Mixer Upconverter Curves TC = +25°C TC = -40°C 7 PLO = -3dBm, 0dBm, +3dBm, +6dBm 6 5 5 1950 2100 2250 2400 1650 INPUT IP3 vs. RF FREQUENCY MAX2043 toc42 TC = +85°C 2250 2400 1500 31 29 TC = -40°C 31 PLO = -3dBm 1950 2100 2250 2400 1650 31 29 1950 2100 2250 VCC = 4.75V, 5.0V, 5.25V 1500 2400 1650 PIF = 0dBm PLO = +6dBm LO + 2IF REJECTION (dBc) 65 TC = +85°C 1950 2100 2250 2400 LO + 2IF REJECTION vs. RF FREQUENCY 75 PLO = +3dBm 65 55 1800 RF FREQUENCY (MHz) LO + 2IF REJECTION vs. RF FREQUENCY TC = +25°C 55 1800 85 MAX2043 toc45 PIF = 0dBm TC = -40°C 33 RF FREQUENCY (MHz) LO + 2IF REJECTION vs. RF FREQUENCY 2400 25 1500 RF FREQUENCY (MHz) 85 2250 27 27 85 PLO = 0dBm PIF = 0dBm VCC = 5.25V LO + 2IF REJECTION (dBc) 1800 2100 35 MAX2043 toc46 1650 1950 INPUT IP3 vs. RF FREQUENCY 33 29 1800 37 25 1500 1650 RF FREQUENCY (MHz) PLO = 0dBm, +3dBm, +6dBm 35 INPUT IP3 (dBm) INPUT IP3 (dBm) 2100 37 25 LO + 2IF REJECTION (dBc) 1950 INPUT IP3 vs. RF FREQUENCY 33 27 1800 RF FREQUENCY (MHz) 37 TC = +25°C MAX2043 toc41 4 1500 RF FREQUENCY (MHz) 35 VCC = 4.75V, 5.0V, 5.25V 6 MAX2043 toc44 1800 INPUT IP3 (dBm) 1650 MAX2043 toc43 1500 7 5 4 4 75 8 CONVERSION LOSS (dB) 6 8 CONVERSION LOSS (dB) 7 CONVERSION LOSS vs. RF FREQUENCY 9 MAX2043 toc40 MAX2043 toc39 TC = +85°C 8 CONVERSION LOSS (dB) CONVERSION LOSS vs. RF FREQUENCY 9 75 MAX2043 toc47 CONVERSION LOSS vs. RF FREQUENCY 9 VCC = 5.0V VCC = 4.75V 65 55 PLO = -3dBm 45 45 45 1500 1650 1800 1950 2100 RF FREQUENCY (MHz) 2250 2400 1500 1650 1800 1950 2100 RF FREQUENCY (MHz) 2250 2400 1500 1650 1800 1950 2100 2250 2400 RF FREQUENCY (MHz) _______________________________________________________________________________________ 9 MAX2043 Typical Operating Characteristics (MAX2043 Typical Application Circuit, C2 = 22pF, VCC = +5.0V, PLO = 0dBm, LOSEL = “1” (LO1 selected), PIF = 0dBm, fRF = fLO - fIF, fIF = 90MHz, unless otherwise noted.) Typical Operating Characteristics (continued) (MAX2043 Typical Application Circuit, C2 = 22pF, VCC = +5.0V, PLO = 0dBm, LOSEL = “1” (LO1 selected), PIF = 0dBm, fRF = fLO - fIF, fIF = 90MHz, unless otherwise noted.) Upconverter Curves 65 TC = +85°C 55 TC = -40°C 65 PLO = +6dBm 55 PIF = 0dBm VCC = 5.25V VCC = 5.0V 75 MAX2043 toc50 PLO = 0dBm 75 LO - 2IF REJECTION vs. RF FREQUENCY 85 LO - 2IF REJECTION (dBc) 75 PIF = 0dBm PLO = +3dBm LO - 2IF REJECTION (dBc) LO - 2IF REJECTION (dBc) TC = +25°C MAX2043 toc48 PIF = 0dBm LO - 2IF REJECTION vs. RF FREQUENCY 85 MAX2043 toc49 LO - 2IF REJECTION vs. RF FREQUENCY 85 65 VCC = 4.75V 55 PLO = -3dBm 45 1950 2100 2250 45 1500 2400 1650 RF FREQUENCY (MHz) LO + 3IF REJECTION vs. RF FREQUENCY 2250 2400 1500 75 TC = -40°C TC = +25°C 55 PIF = 0dBm 45 75 65 PLO = -3dBm, 0dBm, +3dBm, +6dBm 55 1950 2100 2250 2400 1650 RF FREQUENCY (MHz) TC = +25°C, +85°C LO - 3IF REJECTION (dBc) 65 TC = -40°C 55 45 1650 1800 1950 2100 RF FREQUENCY (MHz) 2250 2400 2400 75 65 VCC = 4.75V, 5.0V, 5.25V 55 1950 2100 2250 2400 1500 1650 1800 1950 2100 2250 2400 RF FREQUENCY (MHz) LO - 3IF REJECTION vs. RF FREQUENCY LO - 3IF REJECTION vs. RF FREQUENCY 75 1500 1800 85 MAX2043 toc54 PIF = 0dBm 2250 PIF = 0dBm RF FREQUENCY (MHz) LO - 3IF REJECTION vs. RF FREQUENCY 85 2100 45 1500 PIF = 0dBm 85 LO - 3IF REJECTION (dBc) 1800 1950 LO + 3IF REJECTION vs. RF FREQUENCY MAX2043 toc55 1650 1800 85 45 1500 1650 RF FREQUENCY (MHz) LO + 3IF REJECTION vs. RF FREQUENCY LO + 3IF REJECTION (dBc) LO + 3IF REJECTION (dBc) 2100 85 MAX2043 toc51 PIF = 0dBm TC = +85°C 10 1950 RF FREQUENCY (MHz) 85 65 1800 MAX2043 toc53 1800 LO + 3IF REJECTION (dBc) 1650 MAX2043 toc52 1500 75 65 PLO = -3dBm, 0dBm, +3dBm, +6dBm 55 PIF = 0dBm MAX2043 toc56 45 LO - 3IF REJECTION (dBc) MAX2043 1700MHz to 3000MHz High-Linearity, Low LO Leakage Base-Station Rx/Tx Mixer 75 65 VCC = 4.75V, 5.0V, 5.25V 55 45 45 1500 1650 1800 1950 2100 RF FREQUENCY (MHz) 2250 2400 1500 1650 1800 1950 2100 RF FREQUENCY (MHz) ______________________________________________________________________________________ 2250 2400 1700MHz to 3000MHz High-Linearity, Low LO Leakage Base-Station Rx/Tx Mixer Upconverter Curves LO LEAKAGE AT RF PORT vs. LO FREQUENCY TC = +25°C -40 TC = +85°C -50 -60 TC = -40°C -40 -50 PLO = -3dBm PLO = 0dBm -60 PLO = +3dBm -30 MAX2043 toc59 MAX2043 toc58 -30 LO LEAKAGE AT RF PORT (dBm) MAX2043 toc57 LO LEAKAGE AT RF PORT (dBm) -30 LO LEAKAGE AT RF PORT vs. LO FREQUENCY LO LEAKAGE AT RF PORT (dBm) LO LEAKAGE AT RF PORT vs. LO FREQUENCY -40 -50 VCC = 4.75V, 5.0V, 5.25V -60 PLO = +6dBm -70 -70 1750 1900 2050 2200 2350 -70 1600 2500 1750 2050 2200 2350 2500 1600 PLO = -3dBm, 0dBm, +3dBm, +6dBm -80 -90 -90 1750 1900 2050 2200 LO FREQUENCY (MHz) 2350 2500 2500 VCC = 4.75V, 5.0V, 5.25V -80 -90 -100 -100 2350 -70 IF LEAKAGE (dBm) IF LEAKAGE (dBm) -80 2200 IF LEAKAGE AT RF vs. LO FREQUENCY -70 TC = -40°C, +25°C, +85°C 2050 -60 MAX2043 toc61 MAX2043 toc60 -60 -70 1900 LO FREQUENCY (MHz) IF LEAKAGE AT RF vs. LO FREQUENCY IF LEAKAGE AT RF vs. LO FREQUENCY -60 1600 1750 LO FREQUENCY (MHz) LO FREQUENCY (MHz) IF LEAKAGE (dBm) 1900 MAX2043 toc62 1600 -100 1600 1750 1900 2050 2200 LO FREQUENCY (MHz) 2350 2500 1600 1750 1900 2050 2200 2350 2500 LO FREQUENCY (MHz) ______________________________________________________________________________________ 11 MAX2043 Typical Operating Characteristics (continued) (MAX2043 Typical Application Circuit, C2 = 22pF, VCC = +5.0V, PLO = 0dBm, LOSEL = “1” (LO1 selected), PIF = 0dBm, fRF = fLO - fIF, fIF = 90MHz, unless otherwise noted.) MAX2043 1700MHz to 3000MHz High-Linearity, Low LO Leakage Base-Station Rx/Tx Mixer Pin Description PIN NAME 1–5, 7, 10, 11, 12, 15, 18, 20, 22, 24, 25, 26, 28, 29, 31–36 GND These pins have no internal connection and can be left open or connected to ground. It is suggested that these pins be grounded back to the exposed paddle where possible to improve pinto-pin isolation. 6, 16, 21, 30 VCC Power-Supply Connection. Connected to external power supply (5V). Bypass to GND with a 0.01µF capacitor as close to the pin as possible. 8 RFTAP 9 13, 14 RF FUNCTION Center Tap of the Internal RF Balun. Connected to internal RF balun center tap. Single-Ended 50Ω RF Input/Output. DC grounded internally. IF+, IF- (ports) Differential IF Ports (50Ω). 0V common-mode voltage. Adjust LO Drive. A 360Ω ±1% resistor connected from this pin to ground sets the LO driver bias. A 1.1V DC voltage appears across this resistor. 17 LO_ADJ 19 LO1 23 LOSEL 27 LO2 Local Oscillator Input 2. Drive LOSEL low to select LO2. EP GND Exposed Paddle. Ground the exposed paddle using multiple ground vias. Local Oscillator Input 1. Drive LOSEL high to select LO1. Local Oscillator Select. Logic 0 selects LO2 and 1 selects LO1. Detailed Description The MAX2043 can operate as either a downconverter or an upconverter mixer that provides 7.5dB of conversion loss with a typical 7.8dB noise figure. IIP3 is +31dBm for both upconversion and downconversion. The integrated baluns and matching circuitry allow for 50Ω single-ended interfaces to the RF port and two LO ports. The RF port can be used as an input for downconversion or an output for upconversion. A singlepole, double-throw (SPDT) switch provides 50ns switching time between the two LO inputs with 43dB of LO-to-LO isolation and -52dBm of LO leakage. Furthermore, the integrated LO buffer provides a high drive level to the mixer core, reducing the LO drive required at the MAX2043’s inputs to a -3dBm to +6dBm range. The IF port incorporates a differential output for downconversion, which is ideal for providing enhanced IIP2 performance. For upconversion, the IF port is a differential input. Specifications are guaranteed over broad frequency ranges to allow for use in UMTS/WCDMA and 2G/2.5G/3G DCS 1800, PCS 1900, cdma2000, and WiMAX base stations. The MAX2043 is specified to operate over a 1700MHz to 3000MHz RF input range, a 1900MHz to 3000MHz LO range, and an IF range of near 0MHz to 350MHz. The external IF component sets the lower frequency range. 12 RF Port and Balun For using the MAX2043 as a downconverter, the RF input is internally matched to 50Ω, requiring no external matching components. A DC-blocking capacitor is required because the input is internally DC shorted to ground through the on-chip balun. The RF return loss is typically 15dB over the entire 1700MHz to 3000MHz RF frequency range. For upconverter operation, the RF port is a single-ended output similarly matched to 50Ω. An optional L-C BPF can be installed at the RF port to improve some upconverter performance. LO Inputs, Buffer, and Balun The MAX2043 is optimized for a 1900MHz to 3000MHz LO range. As an added feature, the MAX2043 includes an internal LO SPDT switch that can be used for frequency-hopping applications. The switch selects one of the two single-ended LO ports, allowing the external oscillator to settle on a particular frequency before it is switched in. LO switching time is typically less than 50ns, which is more than adequate for typical GSM applications. If frequency-hopping is not employed, simply set the switch to either of the LO inputs. The switch is controlled by a digital input (LOSEL): logichigh selects LO1, logic-low selects LO2. LO1 and LO2 inputs are internally matched to 50Ω, requiring only a 22pF DC-blocking capacitor. To avoid damage to the ______________________________________________________________________________________ 1700MHz to 3000MHz High-Linearity, Low LO Leakage Base-Station Rx/Tx Mixer A two-stage internal LO buffer allows a wide input power range for the LO drive. All guaranteed specifications are for an LO signal power from -3dBm to +6dBm. The on-chip low-loss balun along with an LO buffer drives the double-balanced mixer. All interfacing and matching components from the LO inputs to the IF outputs are integrated on-chip. High-Linearity Mixer The core of the MAX2043 is a double-balanced, high-performance passive mixer. Exceptional linearity is provided by the large LO swing from the on-chip LO buffer. Differential IF Bias Resistor Bias current for the on-chip LO buffer is optimized by fine-tuning the off-chip resistor on pin 17 (R1). The current in the buffer amplifier can be reduced by raising the value of this resistor but performance (especially IP3) degrades. Doubling the value of this resistor reduces the current in the device by approximately half. Additional Tuning Components The MAX2043 mixer performance can be further enhanced with the use of external components. The values of these components depend on the application and the frequency band of interest. Consult the factory for further details. Layout Considerations The MAX2043 mixer has a DC to 350MHz IF frequency range where the low-end frequency depends on the frequency response of the external IF components. Note that these differential ports are ideal for providing enhanced IIP2 performance. Single-ended IF applications require a 1:1 balun to transform the 50Ω differential IF impedance to 50Ω single-ended system. After the balun, the IF return loss is better than 20dB. The user can use a differential IF amplifier on the mixer IF ports, but a DC block is required on both IF+ and IF- ports to keep external DC from entering the IF ports of the mixer. The mixer requires a DC ground return on either the RF tap pin (short tap to ground) or on each IF differential port (1kΩ resistor or an inductor from each IF differential pin to ground). A properly designed PC board is an essential part of any RF/microwave circuit. Keep RF signal lines as short as possible to reduce losses, radiation, and inductance. For the best performance, route the ground pin traces directly to the exposed pad under the package. The PC board exposed pad MUST be connected to the ground plane of the PC board. It is suggested that multiple vias be used to connect this pad to the lower-level ground planes. This method provides a good RF/thermal conduction path for the device. Solder the exposed pad on the bottom of the device package to the PC board. The MAX2043 evaluation kit can be used as a reference for board layout. Gerber files are available upon request at www.maxim-ic.com. Applications Information Proper voltage supply bypassing is essential for highfrequency circuit stability. Bypass each V CC pin and TAP with the capacitors shown in the Typical Application Circuit. See Table 1. Place the TAP bypass capacitor to ground within 100 mils of the TAP pin. Input and Output Matching The RF and LO inputs are internally matched to 50Ω. No matching components are required. Return loss at the RF port is typically 17dB and return loss at the LO ports are typically 14dB. RF and LO inputs require only DC-blocking capacitors for interfacing. The IF output impedance is 50Ω (differential). For evaluation, an external low-loss 1:1 (impedance ratio) balun transforms this impedance to a 50Ω single-ended output (see the Typical Application Circuit). Power-Supply Bypassing Exposed Pad RF/Thermal Considerations The exposed paddle (EP) of the MAX2043’s 36-pin thin QFN-EP package provides a low thermal-resistance path to the die. It is important that the PC board on which the MAX2043 is mounted be designed to conduct heat from the EP. In addition, provide the EP with a low-inductance path to electrical ground. The EP MUST be soldered to a ground plane on the PC board, either directly or through an array of plated via holes. ______________________________________________________________________________________ 13 MAX2043 part, voltage MUST be applied to VCC before digital logic is applied to LOSEL. Chip Information Table 1. Component List Referring to the Typical Application Circuit COMPONENT VALUE C1 4pF PROCESS: SiGe BiCMOS DESCRIPTION Microwave capacitor (0402) C2*, C4, C6, C8 22pF Microwave capacitors (0402) C3 Not used Microwave capacitor (0603) C5, C7, C9 0.01µF Microwave capacitors (0402) R1 360Ω 360Ω ±1% resistor (0402) T1 1:1 Transformer (50:50) M/A-COM MABAES0029 U1 MAX2043 Maxim IC *Ground pin 8 for downconverter operation. Pin Configuration GND GND GND GND GND GND VCC GND GND TOP VIEW 36 35 34 33 32 31 30 29 28 27 LO2 26 GND GND 3 25 GND GND 4 24 GND GND 5 23 LOSEL 6 22 GND GND 7 21 VCC 20 GND 19 LO1 GND 1 MAX2043 GND 2 VCC EXPOSED PADDLE RFTAP 8 14 10 11 12 13 14 15 16 17 18 GND GND IF+ IF- GND VCC LO_ADJ GND RF 9 GND MAX2043 1700MHz to 3000MHz High-Linearity, Low LO Leakage Base-Station Rx/Tx Mixer ______________________________________________________________________________________ 1700MHz to 3000MHz High-Linearity, Low LO Leakage Base-Station Rx/Tx Mixer VCC 36 GND GND GND GND GND VCC VCC C4 GND C2 C3 RFTAP RF RF 35 34 33 30 31 32 GND GND VCC GND GND GND GND GND GND C9 28 29 U1 1 27 MAX2043 2 26 3 25 4 24 5 23 6 22 7 21 EXPOSED PADDLE 8 20 9 19 C1 LO2 GND LO2 C8 GND GND LOSEL LO SELECT GND VCC VCC C7 GND LO1 LO1 C6 16 18 GND 17 LO_ADJ GND VCC 15 14 IF- 13 IF+ 12 GND 11 GND GND 10 R1 VCC C5 NOTE: PINS 1, 2, 3, 4, 5, 7, 10, 11, 12, 15, 18, 20, 22, 24, 25, 26, 28, 29, 31, 32, 33, 34, 35, 36 OF U1 HAVE NO INTERNAL CONNECTIONS. THESE PINS CAN BE CONNECTED BACK TO THE GROUNDED EXPOSED PADDLE WHERE POSSIBLE TO IMPROVE PIN-TO-PIN ISOLATION. T1 3 5 IF 1 4 ______________________________________________________________________________________ 15 MAX2043 Typical Application Circuit Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) QFN THIN.EPS MAX2043 1700MHz to 3000MHz High-Linearity, Low LO Leakage Base-Station Rx/Tx Mixer (NE-1) X e E E/2 k D/2 CL (ND-1) X e D D2 D2/2 e b E2/2 L CL k E2 e L CL CL L1 L L e A1 A2 e A PACKAGE OUTLINE 36, 40, 48L THIN QFN, 6x6x0.8mm 21-0141 16 ______________________________________________________________________________________ F 1 2 1700MHz to 3000MHz High-Linearity, Low LO Leakage Base-Station Rx/Tx Mixer NOTES: 1. DIMENSIONING & TOLERANCING CONFORM TO ASME Y14.5M-1994. 2. ALL DIMENSIONS ARE IN MILLIMETERS. ANGLES ARE IN DEGREES. 3. N IS THE TOTAL NUMBER OF TERMINALS. 4. THE TERMINAL #1 IDENTIFIER AND TERMINAL NUMBERING CONVENTION SHALL CONFORM TO JESD 95-1 SPP-012. DETAILS OF TERMINAL #1 IDENTIFIER ARE OPTIONAL, BUT MUST BE LOCATED WITHIN THE ZONE INDICATED. THE TERMINAL #1 IDENTIFIER MAY BE EITHER A MOLD OR MARKED FEATURE. 5. DIMENSION b APPLIES TO METALLIZED TERMINAL AND IS MEASURED BETWEEN 0.25 mm AND 0.30 mm FROM TERMINAL TIP. 6. ND AND NE REFER TO THE NUMBER OF TERMINALS ON EACH D AND E SIDE RESPECTIVELY. 7. DEPOPULATION IS POSSIBLE IN A SYMMETRICAL FASHION. 8. COPLANARITY APPLIES TO THE EXPOSED HEAT SINK SLUG AS WELL AS THE TERMINALS. 9. DRAWING CONFORMS TO JEDEC MO220, EXCEPT FOR 0.4mm LEAD PITCH PACKAGE T4866-1. 10. WARPAGE SHALL NOT EXCEED 0.10 mm. 11. MARKING IS FOR PACKAGE ORIENTATION REFERENCE ONLY. 12. NUMBER OF LEADS SHOWN FOR REFERENCE ONLY. PACKAGE OUTLINE 36, 40, 48L THIN QFN, 6x6x0.8mm 21-0141 F 2 2 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 17 © 2005 Maxim Integrated Products M. Reduta Printed USA is a registered trademark of Maxim Integrated Products, Inc. MAX2043 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.)