MD59-0022 PCS CDMA Upconverter / Driver 1710— 1710 — 1910 MHz TSSOP-16 Plastic Package1 Features • • • • • • • • (.039) (1) 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 Ω Low LO Drive Level -10 dBm Operates in US and Korean PCS Bands Miniature TSSOP-16 Plastic Package .041/.031 1,05/,80 Pin 16 .177/.169 4,5/4,3 .252 6,4 .118 3,0 Pin 1 .0256 0,65 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. .201/.193 5,1/4,9 .118 3,0 Exposed Pad 1. Dimensions are: in / mm 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. Ordering Information MD59-0022TR Forward Tape and Reel1 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. MD59-0022RTR MD59-0022SMB Reverse Tape and Reel1 Sample Board Part Number Package 1. If specific reel size is required, consult factory for part number assignment. Electrical Specifications TA = 25°C, VDD = 3.0V Parameter Test Conditions Units Min. Typ. Max. 27.2 Complete Upconverter1 / High Power Mode Conversion Gain VCTRL = VDD dB 24 CDMA Linear Output Power2 RF Frequency = 1710 - 1910 MHz dBm 9 Noise Figure LO Frequency = 1580 - 1780 MHz dB 10 IDD LO Power = -10 dBm mA VSWR (All Ports) IF = 130 MHz IF Input Impedance LO-to-RF Port Leakage 66 1.5:1 Ohms 265 dBm -18 dB 22 Complete UPconverter1 / Low Power Mode Conversion Gain VCTRL = (0V) CDMA Linear Output Power2 RF Frequency = 1710 - 1910 MHz dBm 2 Noise Figure LO Frequency = 1580 = 1780 MHz dB 10 IDD LO Power = -10 dBm mA VSWR (All Ports) IF = 130 MHz IF Input Impedance LO-to-RF Port Leakage 46 1.5:1 Ohms 265 dBm -18 RF Driver Amplifier Gain VCTRL = VDD, RF Frequency = 1710 - 1910 MHz dB TBD Gain VCTRL = 0V, RF Frequency = 1710 - 1910 MHz dB TBD 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 MD59-0022 Pin Configuration PIN No. 1 PIN Block Diagrams Description DRV VDD1 Driver Amplifier first stage supply voltage. Must be RF bypassed DRV VDD 1 DRV SRC DRV IN DRV OUT GND DRV VDD 2 50 Ω Input to driver amplifier (DC blocking required) 2 DRV In 3 GND DC and RF Ground 4 GND DC and RF Ground 5 MIX OUT 6 GND DC and RF Ground 7 LO IN Local Oscillator Input (-10 to -5 dBm) (DC blocked) 8 LO VDD LO Amplifier Supply Voltage - Bypassing required 9 IF+ VDD IF+ supply voltage. Off chip inductor and IF bypassing required 10 IF+ IN IF+ input port. Off chip matching elements required 11 IF- IN IF- VDD IF- input port. Off chip matching elements required 12 IF- VDD IF- supply voltage. Off chip inductor and IF bypassing required 13 GND 50 Ω Output of Mixer (DC blocked) GND DRV VDD2 Driver amplifier second stage supply voltage. Must be RF bypassed 15 DRV OUT 50 Ω output of Driver Amplifier (DC blocked internally) 16 DRV SRC Source bias voltage of driver output stage. Required RF bypassing and may be used to control ouput stage current IF- VDD MIX OUT GND DC and RF Ground 14 GND IF- IN LO IN IF+ IN LO VDD IF+ VDD 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 Recommended PCB Configuration Ref. Designation Value C1, C3 C8 33 pF C2, C4, C5, C9, C10, C11, C12, C13 1000 pF C6, C7 10 pF IF Matching L1 270 nH IF Matching L2, L3 82 nH RF Choke R1 18 Ω Source Bias Resistor R2 68 Ω Source Bias Resistor for low current mode Purpose RF Bypass RF / IF Bypass U1 MD59-0022 Upconverter / Driver U2 Filter LO and Image signals U3 E Series XFMR U4 DCT114Y Bipolar transistor for current ETL switching (ROHM) J1 DC Connect MD59-0022 5:1 Transformer for IF matching 10 PIN DC Connector Cross Section View RF Traces + Components RF Ground DC Routing Customer 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. The IFA input ports are externally matched to 265 Ω 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 Ω. 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. 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 Ω 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. 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 MD59-0022 Typical Performance Curves 28 27 26 25 24 23 22 21 20 19 18 US PCS Band Conversion Gain vs. Frequency LO = -10 dBm, -5 dBm, VDD = 3.0V 26 High Power Mode 25 -5dBm High Power Mode -10dBm -5dBm -10dBm 23 -5dBm 22 21 -10dBm -10dBm 20 Low Power Mode Low Power Mode 19 18 1.74 1.75 1.76 1.77 1.78 1.79 1.83 1.84 1.85 RF FREQUENCY (GHz) 1.87 1.88 1.89 1.9 1.91 1.92 1.93 1.92 1.93 LO-to-RF Leakage vs. Frequency LO = -10dBm, -5 dBm, VDD = 3.0V -20 -22 High Power Mode 3.3V LO LEAKAGE (dBm) 28 27 26 25 24 23 22 21 20 19 18 1.74 1.86 RF FREQUENCY (GHz) Conversion Gain vs. Frequency VDD = 2.8V, 3.0V, 3.3V, LO = -10dBm GAIN (dB) -5dBm 24 GAIN (dB) GAIN (dB) Korean PCS Band Conversion Gain vs. Frequency LO = -10dBm, -5 dBm, VDD = 3.0V 3.0V 2.8V 3.3V 2.8V 3.0V -24 -5dBm -26 -28 -30 -10dBm -32 -34 -36 -38 Low Power Mode -40 1.75 1.76 1.77 1.78 1.79 1.83 1.84 1.85 1.86 1.87 1.88 1.89 1.9 1.91 RF FREQUENCY (GHz) RF FREQUENCY (GHz) LO LEAKAGE (dBm) LO-to-RF Leakage vs. Frequency LO = -10dBm, -5 dBm, VDD = 3.0V -20 -22 -24 -26 -28 -30 -32 -34 -36 -38 -40 1.74 -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 MD59-0022 Typical Performance Curves (Cont’d) 70 68 66 64 62 60 58 56 54 52 50 48 ACPR vs. Output Power VDD = 2.8V, 3.0V, 3.3V, LO = -10dBm 70 68 High Power Mode High Power Mode 66 Low Power Mode Low Power Mode 64 ACPR (dBc) ACPR (dBc) ACPR vs. Output Power LO = -10dBm, -5 dBm, VDD = 3.0V -5dBm -5dBm -10dBm -10dBm 62 3.3V 60 3.3V 3.0V 3.0V 58 56 2.8V 54 2.8V 52 50 48 -4 -2 0 2 4 6 8 10 12 -4 -2 0 2 POUT (dBm) Lo Input Return Loss vs. Frequency LO = -10dBm, VDD = 3.0V 10 8 10 12 5 0 RETURN LOSS (dB) RETURN LOSS (dB) 6 IF Input Return Loss vs. Frequency LO = -5 dBm, VDD = 3.0V 10 5 -5 -10 -15 -20 -25 -30 0 -5 -10 -15 -20 -25 -30 -35 -35 -40 -40 1.4 1.45 1.5 1.55 1.6 1.65 1.7 LO FREQUENCY (GHz) 1.75 1.8 1.85 0 1.9 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 10 5 5 0 RETURN LOSS (dB) RETURN LOSS (dB) 4 POUT (dBm) -5 -10 -15 -20 -25 -30 -35 Driver Output Return Loss vs. Frequency High and Low Power Mode, VDD = 3.0V 0 High Power Mode -5 -10 -15 -20 Low Power Mode -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 -40 1.6 1.65 1.7 1.75 1.8 1.85 1.9 1.95 2 2.05 2.1 RF FREQUENY (GHz) Driver Input Return Loss vs. Frequency High and Low Power Mode, VDD = 3.0V 10 RETURN LOSS (dB) 5 0 -5 -10 -15 -20 -25 -30 -35 -40 1.6 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.