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| MD59-0022 PCS CDMA Upconverter / Driver 1710-- 1710 -- 1910 MHz Features * * * * * * * * High Integrated Upconverter and Driver IC Operates over 2.7 V to 5V Supply Voltage +9 dBm Output Power at 51 dBc ACPR Low current mode for power saving at low output power Balanced IF Input 265 Low LO Drive Level -10 dBm Operates in US and Korean PCS Bands Miniature TSSOP-16 Plastic Package TSSOP-16 Plastic Package1 (.039) (1) Pin 16 .041/.031 1,05/,80 .252 6,4 .177/.169 4,5/4,3 Pin 1 .0256 0,65 .201/.193 5,1/4,9 Exposed Pad .118 3,0 Description M/A-COM's MD59-0022 is a fully integrated upconverter / Driver IC. It includes a balanced IF amplifier, upconverting mixer, two stage driver amplifier and LO buffer amplifier in a miniature TSSOP-16 plastic package. The backside of the lead frame is exposed to facilitate excellent RF grounding and thermal transfer. The MD59-0022 is ideally suited for CDMA handset applications where high linearity and low power consumption are important transmitter requirements. The MD59-0022 can also operate in a low power mode to extend system battery life. The MD59-0022 is fabricated using M/A-COM's 0.5 micron low noise E/D GaAs MESFET process. The process features full passivation for increased performance and reliability. .118 3,0 1. Dimensions are: in / mm Ordering Information Part Number MD59-0022TR MD59-0022RTR MD59-0022SMB Package Forward Tape and Reel1 Reverse Tape and Reel1 Sample Board 1. If specific reel size is required, consult factory for part number assignment. Electrical Specifications TA = 25C, VDD = 3.0V Parameter Complete Upconverter1 / High Power Mode Conversion Gain CDMA Linear Output Power2 Noise Figure IDD VSWR (All Ports) IF Input Impedance LO-to-RF Port Leakage Complete UPconverter1 / Low Power Mode Conversion Gain CDMA Linear Output Power2 Noise Figure IDD VSWR (All Ports) IF Input Impedance LO-to-RF Port Leakage RF Driver Amplifier Gain Gain VCTRL = VDD, RF Frequency = 1710 - 1910 MHz VCTRL = 0V, RF Frequency = 1710 - 1910 MHz dB dB TBD TBD VCTRL = (0V) RF Frequency = 1710 - 1910 MHz LO Frequency = 1580 = 1780 MHz LO Power = -10 dBm IF = 130 MHz Ohms dBm dB dBm dB mA 22 2 10 46 1.5:1 265 -18 VCTRL = VDD RF Frequency = 1710 - 1910 MHz LO Frequency = 1580 - 1780 MHz LO Power = -10 dBm IF = 130 MHz Ohms dBm dB dBm dB mA 24 9 10 66 1.5:1 265 -18 27.2 Test Conditions Units Min. Typ. Max. 1. Complete upconverter / driver measurements taken with a surface mount SAW filter between Mixer Ouput and Driver Input. 2. CDMA Linear power is defined as 51 dBc ACPR at a 1.228 MHz Offset from the carrier frequency. Specifications subject to change without notice. V 2.0 North America: Tel. (800) 366-2266, Fax (800) 618-8883 Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 Visit www.macom.com for additional data sheets and product information. PCS CDMA Upconverter / Driver 1710--1910 GHz Pin Configuration PIN No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 PIN Description DRV VDD 1 MD59-0022 Block Diagrams DRV SRC DRV VDD1 Driver Amplifier first stage supply voltage. Must be RF bypassed DRV In GND GND MIX OUT GND LO IN LO VDD IF+ VDD IF+ IN IF- IN IF- VDD IF- VDD GND 50 Input to driver amplifier (DC blocking required) DC and RF Ground DC and RF Ground 50 Output of Mixer (DC blocked) DC and RF Ground Local Oscillator Input (-10 to -5 dBm) (DC blocked) LO Amplifier Supply Voltage - Bypassing required IF+ supply voltage. Off chip inductor and IF bypassing required IF+ input port. Off chip matching elements required IF- input port. Off chip matching elements required DRV IN DRV OUT GND DRV VDD 2 GND GND MIX OUT IF- VDD GND IF- IN LO IN IF+ IN IF- supply voltage. Off chip inductor and IF bypassing required DC and RF Ground LO VDD IF+ VDD DRV VDD2 Driver amplifier second stage supply voltage. Must be RF bypassed DRV OUT 50 output of Driver Amplifier (DC blocked internally) DRV SRC Source bias voltage of driver output stage. Required RF bypassing and may be used to control ouput stage current Sample Board Schematic D TC 114YE TL if- in if+ in J1 1. Saw filter characteristics to be determined by customer, depending on band of operation. Sample boards are supplied without saw filter installed. Data supplied with sample board is measured over US PCS1900 Tx Bond using external K&L BPF (p/n SB121-1850/T450-0/OP) and 2 dB attenuation to emulate typical saw filter characteristics. Specifications subject to change without notice. V 2.0 North America: Tel. (800) 366-2266, Fax (800) 618-8883 Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 Visit www.macom.com for additional data sheets and product information. PCS CDMA Upconverter / Driver 1710--1910 GHz External Circuitry Parts List Ref. Designation C1, C3 C8 C2, C4, C5, C9, C10, C11, C12, C13 C6, C7 L1 L2, L3 R1 R2 U1 U2 U3 U4 J1 E Series XFMR Value 33 pF 1000 pF 10 pF 270 nH 82 nH 18 68 RF Bypass RF / IF Bypass IF Matching IF Matching RF Choke Source Bias Resistor Source Bias Resistor for low current mode MD59-0022 Upconverter / Driver Filter LO and Image signals 5:1 Transformer for IF matching Purpose MD59-0022 Recommended PCB Configuration Cross Section View RF Traces + Components RF Ground DC Routing Customer DCT114Y Bipolar transistor for current ETL switching (ROHM) DC Connect 10 PIN DC Connector Operating Instructions The MD59-0022 is a highly integrated MMIC upconverter/driver for the 1710-1910 MHz PCS band. The upconverter/driver provides exceptional RF performance while consuming low DC current and is packaged in a low cost plastic package. It is ideal for light weight battery operated portable radio systems. The transmit chain consists of a balanced IF amplifier, balanced mixer with single-ended RF output and a two stage RF driver amplifier as shown in the block diagram on the previous page. Surface mount resistors, inductors and capacitors are used in conjunction with the IC for an optimum performance, tunability and ease of use. A schematic, showing the IC and required external components, is shown on page 2. An external self-bias resistor R1, which is RF bypassed, allows the current in the driver amplifier to be varied to obtain the required linear output power. By placing a bipolar transistor in series with the self-bias resistor, as shown in the schematic, the current consumption in the driver can be dynamically switched to provide a high and low power mode of operation. In high power mode, the bipolar transistor is on and the driver output stage is self-biased through R1 to provide +9 dBm of linear output power. By switching off the transistor, the output stage is biased through the higher resistance R2 thus reducing the current by ~25 mA to give 2 dBm of linear output power. The dual bipolar (U4) shown in the assembly drawing may be replaced by a smaller single transistor package with similar performance. An external filter is required between the mixer output and driver amplifier input to reduce the amplitude of the image and local oscillator signals coming out of the mixer. This filter should have a 50 input and output impedance. The mixer is a balanced resistive FET mixer which provides exceptional linearity and isolation with low loss and no DC current. The IFA input ports are externally matched to 265 differential impedance using two off chip capacitors and an off chip inductor. This allows maximum flexibility of intermediate frequency and IF filter. The IFA output ports are matched to the mixer using off chip inductors, which are also used for DC bias injection. A matching network such as that shown below can be used to match both the input and output of the IFA at the required frequency. The inductor also acts as a choke for the DC supply line. The LO input port is internally matched to 50 . A LO buffer amplifier amplifies the -10 dBm input signal to the level required to drive the mixer. Performance can be enhanced slightly with a drive level of -5 dBm. All DC supply lines must be properly bypassed at RF frequencies to obtain optimum performance and at lower frequency to maintain unconditional stability. Capacitors C1, C3 and C8 are RF bypass capacitors for the LO amplifier and the driver amplifier. The value and placement of these capacitors are critical in determining the frequency response of these amplifiers. Capacitor C11 is a source bypass capacitor for the second stage of the driver amplifier. The placement of this capacitor will affect the gain of the amplifier. For best performance, all the RF bypass capacitors should be placed as shown in the recommended PCB diagram shown above. Capacitors C2, C4, C5 and C9 are 1000 pF low frequency DC supply bypass capacitors. Their value and placement are less critical than the other capacitors. However, for best results, these capacitors should be located as close to the package leads as possible. Specifications subject to change without notice. V 2.0 North America: Tel. (800) 366-2266, Fax (800) 618-8883 Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 Visit www.macom.com for additional data sheets and product information. PCS CDMA Upconverter / Driver 1710--1910 GHz Typical Performance Curves Korean PCS Band Conversion Gain vs. Frequency LO = -10dBm, -5 dBm, VDD = 3.0V 28 27 26 25 24 23 22 21 20 19 18 High Power Mode -5dBm MD59-0022 US PCS Band Conversion Gain vs. Frequency LO = -10 dBm, -5 dBm, VDD = 3.0V 26 25 24 GAIN (dB) 23 22 21 20 -10dBm Low Power Mode -10dBm -5dBm High Power Mode -5dBm GAIN (dB) -10dBm -5dBm -10dBm Low Power Mode 19 18 1.79 1.83 1.84 1.85 1.86 1.74 1.75 1.76 1.77 1.78 1.87 1.88 1.89 1.9 1.91 1.92 1.93 RF FREQUENCY (GHz) RF FREQUENCY (GHz) Conversion Gain vs. Frequency VDD = 2.8V, 3.0V, 3.3V, LO = -10dBm 28 27 26 25 24 23 22 21 20 19 18 1.74 -20 -22 LO-to-RF Leakage vs. Frequency LO = -10dBm, -5 dBm, VDD = 3.0V LO LEAKAGE (dBm) -24 -26 -28 -30 -32 -34 -36 -38 -40 1.83 1.84 1.85 1.86 1.87 1.88 1.89 1.9 1.91 1.92 1.93 -10dBm -5dBm High Power Mode 3.3V 2.8V GAIN (dB) 3.0V 3.3V 2.8V Low Power Mode 3.0V 1.75 1.76 1.77 1.78 1.79 RF FREQUENCY (GHz) RF FREQUENCY (GHz) -20 -22 -24 -26 -28 -30 -32 -34 -36 -38 -40 1.74 LO-to-RF Leakage vs. Frequency LO = -10dBm, -5 dBm, VDD = 3.0V LO LEAKAGE (dBm) -5dBm -10dBm 1.75 1.76 1.77 1.78 1.79 RF FREQUENCY (GHz) Specifications subject to change without notice. V 2.0 North America: Tel. (800) 366-2266, Fax (800) 618-8883 Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 Visit www.macom.com for additional data sheets and product information. PCS CDMA Upconverter / Driver 1710--1910 GHz Typical Performance Curves (Cont'd) ACPR vs. Output Power LO = -10dBm, -5 dBm, VDD = 3.0V 70 68 66 64 62 60 58 56 54 52 50 48 -4 High Power Mode Low Power Mode MD59-0022 70 68 66 64 ACPR (dBc) 62 60 58 56 54 52 50 48 ACPR vs. Output Power VDD = 2.8V, 3.0V, 3.3V, LO = -10dBm High Power Mode Low Power Mode ACPR (dBc) 3.3V 3.3V 3.0V 2.8V 2.8V 3.0V -5dBm -5dBm -10dBm -10dBm -2 0 2 4 POUT (dBm) 6 8 10 12 -4 -2 0 2 4 POUT (dBm) 6 8 10 12 10 5 0 -5 -10 -15 -20 -25 -30 -35 -40 Lo Input Return Loss vs. Frequency LO = -10dBm, VDD = 3.0V RETURN LOSS (dB) 10 5 0 -5 -10 -15 -20 -25 -30 -35 -40 IF Input Return Loss vs. Frequency LO = -5 dBm, VDD = 3.0V RETURN LOSS (dB) 1.4 1.45 1.5 1.55 1.6 1.65 1.7 LO FREQUENCY (GHz) 1.75 1.8 1.85 1.9 0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16 0.18 0.2 IF FREQUENCY (GHz) IF Input Return Loss vs. Frequency LO = -5 dBm, VDD = 3.0V 10 RETURN LOSS (dB) 5 -5 -10 -15 -20 -25 -30 -35 -40 1.6 1.65 1.7 1.75 1.8 1.85 1.9 RF FREQUENCY (GHz) 1.95 2 2.05 2.1 0 10 5 RETURN LOSS (dB) 0 -5 -10 -15 -20 -25 -30 -35 -40 Driver Output Return Loss vs. Frequency High and Low Power Mode, VDD = 3.0V High Power Mode Low Power Mode 1.6 1.65 1.7 1.75 1.8 1.85 1.9 1.95 2 2.05 2.1 RF FREQUENY (GHz) 10 5 0 -5 -10 -15 -20 -25 -30 -35 -40 1.6 Driver Input Return Loss vs. Frequency High and Low Power Mode, VDD = 3.0V RETURN LOSS (dB) 1.65 1.7 1.75 1.8 1.85 1.9 1.95 2 2.05 2.1 RF FREQUENCY (GHz) Specifications subject to change without notice. V 2.0 North America: Tel. (800) 366-2266, Fax (800) 618-8883 Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 Visit www.macom.com for additional data sheets and product information. |
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