RF210-51 Image-Reject Front End for Dual-Band GSM Applications Distinguishing Features The RF210-51 device is available as a dual-band (EGSM900/DCS1800) front end for Global System for Mobile CommunicationsTM (GSMTM) mobile telephony applications. The device integrates all the required front-end components after the frequency pre-select filters. The components include the Low Noise Amplifiers (LNAs), the internal image-reject filters, mixers, and a Local Oscillator (LO) amplifier. * * * * * * The main advantage of the RF210-51 is its ability to provide a minimum of 35 dB of image rejection for each band. The device block diagram is shown in Figure 1. The device package and pin configuration is shown in Figure 2. * * * * * * Supports EGSM LNA and mixer for RF to IF conversion 12 dB or 20 dB switchable gain step Minimum 35 dB of image rejection No external post-LNA filters required Common Intermediate Frequency (IF) port for both bands IF range from 350 MHz to 450 MHz High isolation LO input buffer Differential IF output High dynamic range with low current consumption Three-cell battery operation (2.7 to 3.6 V) 20-pin Exposed paddle, Thin Shrink Small Outline Package (ETSSOP) Applications * Dual-band digital cellular mobile telephony (EGSM900/DCS1800) NC 1 20 VCC GND 2 19 GND GND 3 18 STEPSEL LNA900IN 4 17 IFOUT+ VCC 5 16 IFOUT- VCC 6 15 GND GAINSEL 7 14 BANDSEL1 LNA1800IN 8 13 LOIN GND 9 12 LOGND ENA 10 11 NC LOIN LNA900IN IFout LNA1800IN control Step Sel Gain Sel Band Select 1 C0002 Figure 1. RF210-51 Device Block Diagram C067 Figure 2. RF210-51 Device Pin Configuration - 20-Pin ETSSOP Data Sheet Skyworks Proprietary Information and Specifications are Subject to Change Doc. No. 101244B June 4, 2002 RF210-51 Image-Reject Front End Technical Description The RF210-51 device forms the front end of a dual-band superheterodyne receiver. The RF210-51 dual-band device is optimized for an EGSM900/DCS1800 design. Each frequency band has its own separate front-end receiver path. Each receiver path contains an LNA, an image-reject filter, and a mixer. The IF and LO ports are common to both frequency bands. The image rejection achievable by this front-end design without any additional external components is 35 dB minimum for an IF of 400 MHz. The device operates over a supply voltage range of 2.7 V to 3.6 V. The RF210-51 dual-band device has one band selection pin (BANDSEL1 on pin 14). When BANDSEL1 is set to logic "0," the EGSM900 receiver path is active. The LO frequency needs to be higher than the RF input frequency, that is, a high side injection is used. When BANDSEL1 is set to logic "1," the DCS1800 receiver path is active. The LO frequency needs to be less than the RF input frequency, that is, a low-side injection is used. With a 400 MHz IF, this arrangement allows a single, wide-range Voltage Controlled Oscillator (VCO) to be used for each band of operation. Table 1 provides the frequency band selection settings for the dual-band device. driving the GAINSEL signal to a logic "1"; high gain mode is selected by driving the signal to a logic "0." Depending on the need of the handset design on the gain distribution, the gain step between the high gain and low gain modes can be set to either a 12 dB step or a 20 dB step. This gain step is selectable with the STEPSEL signal (pin 18). Electrical and Mechanical Specifications ________________ The RF210-51 signal pin assignments and functional pin descriptions are found in Table 2. The absolute maximum ratings of the RF210-51 are provided in Table 3, the recommended operating conditions are specified in Table 4. Electrical specifications are provided in Table 3. Figure 3 shows the diagram for a typical application circuit using the RF210-51 front end. Figure 4 provides the package dimensions for this 20-pin ETSSOP device. ESD Sensitivity The RF210-51 is a static-sensitive electronic device. Do not operate or store near strong electrostatic fields. Take proper ESD precautions. All the LNAs have switchable gain. The gain mode is selectable using the GAINSEL signal (pin 7). Low gain mode is selected by Table 1. RF210-51 Band Selection BANDSEL1, pin 14 Mode 0 EGSM900 1 DCS1800 Table 2. RF210-51 Device Signal Description Pin # 2 Name Description Pin # Name Description 1 NC No connect (recommend connecting to ground) 11 NC No connect (recommend connecting to ground) 2 GND Ground 12 LOGND LO input ground 3 GND Ground 13 LOIN LO input 4 LNA900IN 900 MHz LNA input 14 BANDSEL1 Band select control 5 VCC Supply 15 GND Ground 6 VCC Supply 16 IFOUT- Mixer negative output 7 GAINSEL LNA gain select 17 IFOUT+ Mixer positive output 8 LNA1800IN 1800 MHz LNA input 18 STEPSEL Gain step select. STEPSEL= 0 selects a 12 dB gain step; STEPSEL = 1 selects a 20 dB gain step 9 GND Ground 19 GND Ground 10 ENA Device enable, active high 20 VCC Supply Skyworks Proprietary Information and Specifications are Subject to Change 101244B June 4, 2002 Image-Reject Front End RF210-51 Table 3. Absolute Maximum Ratings Parameter Minimum Maximum Units -40 +125 C Supply Voltage (VCC) -0.3 +3.6 V Input Voltage Range -0.3 Vcc V Storage Temperature Table 4. RF210-51 Recommended Operating Conditions Parameter Min Typical Max Units Supply Voltage 2.7 3.0 3.6 V Operating Temperature -30 +25 +85 C Table 5. RF210-51 Electrical Specifications (1 of 2) (TA = 25 C, Vcc = 2.7 V, fIF = 400 MHz, Plo = -10 dBm) Parameter Symbol Test Condition Min Typical Max Units 30 mA A 960 MHz 450 MHz EGSM900 Mode Supply current: Enable mode Sleep mode ENA = 1 ENA = 0 RF Input frequency 15 925 IF frequency fif 350 LO to RF input isolation Input impedance dB 50 Power gain (for 2 k differential output impedance): High gain mode Low gain mode 1 Low gain mode 2 Gain step 1 Gain step 2 Temperature coefficient Gain variation versus frequency Gmax1 Gmin1 Gmin2 Gstep1 Gstep2 Ftc1 GAINSEL = 0 GAINSEL = 1, STEPSEL = 1 GAINSEL = 1, STEPSEL = 0 20 -24 -14 22 0 10 -22 -12 -0.02 25 -20 -10 0.8 Noise figure: High gain Low gain mode 1 Low gain mode 2 GAINSEL = 0 GAINSEL = 1, STEPSEL = 1 GAINSEL = 1, STEPSEL = 0 Noise figure degradation with blocker: High gain -22 dBm blocker, GAINSEL = 0 (Note 1) Input 1 dB compression point IP1dB Input third order intercept point IP3 high gain mode low gain mode 2.3 18 10 -22 -18 Differential IF shunt output resistance Image rejection: fIF = 400 MHz fIF = 350 or 450 MHz 101244B June 4, 2002 400 30 35 25 Skyworks Proprietary Information and Specifications are Subject to Change 3.5 dB dB dB dB dB dB/C dB dB dB dB 1.6 dB -20 -13 dBm dBm -12 dBm 2 k 50 dB dB 3 RF210-51 Image-Reject Front End Table 5. RF210-51 Electrical Specifications (2 of 2) (TA = 25 C, Vcc = 2.7 V, fIF = 400 MHz, Plo = -10 dBm) Parameter Symbol Test Condition Min Typical Max Units 30 mA A 1880 MHz 450 MHz DCS1800 Mode Supply current: Enable mode Sleep mode ENA = 1 ENA = 0 19 RF input frequency 1805 IF frequency 350 LO to RF input isolation 30 Input impedance 400 dB 50 Power gain (for 2 k differential output impedance): High gain mode Low gain mode 1 Low gain mode 2 Gain step 1 Gain step 2 Temperature coefficient Gain variation versus frequency Gmax1 Gmin1 Gmin2 Gstep1 Gstep2 Ftc1 GAINSEL = 0 GAINSEL = 1, STEPSEL = 1 GAINSEL = 1, STEPSEL = 0 20 -22 -14 22 2 10 -20 -12 -0.02 25 -18 -10 1.2 Noise figure: High gain Low gain mode 1 Low gain mode 2 GAINSEL = 0 GAINSEL = 1, STEPSEL = 1 GAINSEL = 1, STEPSEL = 0 Noise figure degradation with blocker: High gain -22 dBm blocker, GAINSEL = 0 (Note 2) Input 1 dB compression point IP1dB Input third order intercept point IP3 3.5 16.5 11 high gain mode low gain mode -23 -20 Differential IF shunt output resistance Image rejection: fIF = 400 MHz fIF = 350 or 450 MHz 35 25 4.5 dB dB dB dB dB dB/C dB dB dB dB 1.6 dB -20 -16 dBm dBm -12 dBm 2 k 40 dB dB Local Oscillator (LO) LO frequency 1275 LO input return loss (with external matching circuit) LO input power fIF = 400 MHz Plo -15 -10 1640 MHz -10 dB -5 dBm Control Signals (All Modes) Digital input voltages (ENA, GAINSEL, BANDSEL1, BANDSEL2, and STEPSEL) Vih Enable time ton Vcc - 0.4 Vil Bandselect switching time V 15 0.4 V 10 s s Note 1: Assumes -5 dBm @ 915 MHz blocker at the antenna input attenuated by 17 dB. Note 2: Assumes -12 dBm @ 1785 MHz blocker at the antenna input attenuated by 10 dB. 4 Skyworks Proprietary Information and Specifications are Subject to Change 101244B June 4, 2002 Image-Reject Front End RF210-51 Vcc 10 10 22 pF 2000 2.2 F 10 pF GAINSEL 6 5 7 20 22 pF L2 82 nH L1 82 nH EGSM Rx filter LNA900IN 4 47 pF 12 nH 12 pF DCS Rx Filter 100 pF IFOUT+ 8 1.5 pF to IF SAW match 17 LNA1800IN 16 3.0 nH IFOUT- 100 pF PCS Rx Filter 14 9 1.2 pF 22 pF 3.0 nH Control 2000 ENABLE 10 2000 BANDSEL1 LNA1900IN 2 k || (L1+L2) differential 2000 BANDSEL2 15 2000 STEPSEL Bias 18 LOIN 22 pF 22 pF 27 pF 13 2 3 12 4.7 nH 19 C903 Figure 3. Typical RF210-51 Application Circuit 0.65 mm 4.20 mm Pin 1 indicator 2 1 3 2 1 3.0 mm 6.40 mm 3 base metal BOTTOM VIEW TOP VIEW 6.500.10 mm 1.00+0.5/-0.2 mm 1.20 mm max 1.00 mm Ref 4.400.10 mm 0.24+0.06/-0.05 mm SIDE VIEW END VIEW 0.100.05 mm C003 Figure 4. RF210-51 Package Dimensions - 20-Pin ETSSOP 101244B June 4, 2002 Skyworks Proprietary Information and Specifications are Subject to Change 5 RF210-51 Image-Reject Front End Ordering Information Model Name Manufacturing Part Number Dual-Band Image-Reject Front End RF210-51 (c) 2002, Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. ("Skyworks") products. These materials are provided by Skyworks as a service to its customers and may be used for informational purposes only. Skyworks assumes no responsibility for errors or omissions in these materials. Skyworks may make changes to its products, specifications and product descriptions at any time, without notice. Skyworks makes no commitment to update the information and shall have no responsibility whatsoever for conflicts, incompatibilities, or other difficulties arising from future changes to its products and product descriptions. 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Additional information, posted at www.skyworksinc.com, is incorporated by reference. 6 Skyworks Proprietary Information and Specifications are Subject to Change 101244B June 4, 2002 General Information: East Coast Headquarters 25 Computer Drive Haverhill, MA 01832-1236 West Coast Headquarters 4311 Jamboree Rd. Newport Beach, CA 92660-3007 www.skyworksinc.com