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| RF2637 RECEIVE AGC AMPLIFIER RoHS Compliant & Pb-Free Product Package Style: MSOP-8 Features Supports Basestation Applications -55dB to +51dB Gain Control Range @ 85MHz Single 3V Power Supply -2dBm Input IP3 12MHz to 385MHz Operation IN+ 1 IN- 2 GND 3 GC 4 GAIN CONTROL 8 VCC1 7 VCC2 6 OUT+ 5 OUT- Applications 3V Basestation Systems General Purpose Linear IF Amplifier Commercial and Consumer Systems Portable Battery-Powered Equipment Functional Block Diagram Product Description The RF2637 is a complete AGC amplifier designed for the receive section of 3V cellular and PCS applications basestations. It is designed to amplify IF signals while providing more than 90dB of gain control range. Noise Figure, IP3, and other specifications are designed for basestations. The IC is manufactured on an advanced high frequency SiGe process, and is packaged in a standard miniature 8-lead plastic MSOP package. Ordering Information RF2637Receive AGC Amplifier RF2637 PCBA Fully Assembled Evaluation Board Optimum Technology Matching(R) Applied GaAs HBT GaAs MESFET InGaP HBT SiGe BiCMOS Si BiCMOS SiGe HBT GaAs pHEMT Si CMOS Si BJT GaN HEMT RF MICRO DEVICES(R), RFMD(R), Optimum Technology Matching(R), Enabling Wireless ConnectivityTM, PowerStar(R), POLARISTM TOTAL RADIOTM and UltimateBlueTM are trademarks of RFMD, LLC. BLUETOOTH is a trademark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. (c)2006, RF Micro Devices, Inc. Rev A5 DS050829 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 1 of 10 RF2637 Absolute Maximum Ratings Parameter Supply Voltage Control Voltage Input RF Power Operating Ambient Temperature Storage Temperature Value -0.5 to +5.0 -0.5 to +5.0 +10 -40 to +85 -40 to +150 Unit VDC VDC dBm C C Caution! ESD sensitive device. Exceeding any one or a combination of the Absolute Maximum Rating conditions may cause permanent damage to the device. Extended application of Absolute Maximum Rating conditions to the device may reduce device reliability. Specified typical performance or functional operation of the device under Absolute Maximum Rating conditions is not implied. RoHS status based on EUDirective2002/95/EC (at time of this document revision). The information in this publication is believed to be accurate and reliable. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents, or other rights of third parties, resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended application circuitry and specifications at any time without prior notice. Parameter Min. Specification Typ. Max. Unit Condition T=25C, 85MHz, VCC =3.0V, ZS =500, ZL =500, 500 External Input Terminating Resistor, 500 External Output Terminating Resistor (Effective ZS =333, Effective ZL =250) (See Application Example) Overall Frequency Range Maximum Gain Minimum Gain Maximum Gain Minimum Gain Gain Slope Gain Control Voltage Range Gain Control Input Impedance Noise Figure Input IP3 Stability (Max VSWR) -46 10:1 +40 -65 +35 -68 12 to 385 +51 -55 +45 -58 57 0 to 2.5 30 5 -40 -2 7.2 +65 -40 +55 -48 MHz dB dB dB dB dB/V VDC k dB dBm dBm At maximum gain and 85MHz At +40dB gain, referenced to 500 At minimum gain, referenced to 500 Spurious<-70dBm VGC =2.5V, 85MHz VGC =0.1V, 85MHz VGC =2.5V, 385MHz VGC =0.1V, 385MHz Note 1 Source impedance of 4.7k IF Input Input Impedance 1 2.7 to 3.4 6 7 10 11.5 150 90 15 15 k V mA mA C/W C Minimum gain, VCC =3.0V Maximum gain, VCC =3.0V Theta J-Ref 85C Ref 85C CDMA, differential Power Supply Voltage Current Consumption Thermal Thermal Resistance Maximum Junction Temperature Note 1: Measured between a gain control voltage of 1.0V to 1.5V. 2 of 10 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. Rev A5 DS050829 RF2637 Pin 1 Function IN+ Description CDMA balanced input pin. This pin is internally DC-biased and should be DC-blocked if connected to a device with a DC level other than VCC present. A DC to connection to VCC is acceptable. For single-ended input operation, one pin is used as an input and the other CDMA input is AC-coupled to ground. The balanced input impedance is 1k, while the singleended input impedance is 500. Same as pin 2, except complementary input. Ground connection. For best performance, keep traces physically short and connect immediately to ground plane. Analog gain adjustment for all amplifiers. Valid control ranges are from 0V to 2.5V. Maximum gain is selected with 2.5V. Minimum gain is selected with 0V. These voltages are only valid for a 4.7k DC source impedance. Interface Schematic BIAS 700 CDMA+ 700 CDMA- 2 3 4 INGND GC See pin 1. V CC 2 3 .5 k 1 2 .7 k 15 k 5 OUT- 6 7 OUT+ VCC2 Balanced output pin. This is an open-collector output, designed to operate into a 250 balanced load. The load sets the operating impedance, but an external choke or matching inductor to VCC must also be supplied in order to correctly bias this output. This bias inductor is typically incorporated in the matching network between the output and next stage. Because this pin is biased to VCC, a DC-blocking capacitor must be used if the next stage's input has a DC path to ground. Same as pin 5, except complementary output. Supply voltage pin. External bypassing is required. The trace length between the pin and the bypass capacitors should be minimized. The ground side of the bypass capacitors should connect immediately to ground plane. Same as pin 7. OUT+ OUT- See pin 5. 8 VCC1 See pin 7. Rev A5 DS050829 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 3 of 10 RF2637 Package Drawing 0.192 0.008 0.012 0.006 0.003 -A- 0.0256 0.118 0.004 sq 6 M AX 0 M IN 0.034 0.021 0.004 0.006 0.002 Shaded lead is pin 1. 4 of 10 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. Rev A5 DS050829 RF2637 Application Schematic C D M A I F F i l t e r CDM A+ CDM AZ IN , E F F = 5 0 0 M e a s u re m e n t R e fe re n c e P la n e Z S=5 00 Z S, EFF= 3 3 3 8 7 6 G A IN CONTROL R 2: 500 5 Z L O A D ,E F F = 2 5 0 C1 L1 V CC C2 10 nF V CC L1 Z LOAD= 5 0 0 C2 O U T+ O U TM e a s u re m e n t R e fe re n c e P la n e Z O UT= 5 0 0 R 1: 1 k Z IN = 1 1 2 k 3 4 C1 G A IN 4 .7 k R 1 s e ts th e C D M A b a la n c e d in p u t im p e d a n c e . T h e e ffe c tiv e in p u t im p e d a n c e is th e n 5 0 0 . R 2 s e ts th e b a la n c e d o u tp u t im p e d a n c e to 5 0 0 . L 1 a n d C 2 s e rv e d u a l p u rp o s e s . L 1 s e rv e s a s a n o u tp u t b ia s c h o k e , a n d C 2 s e rv e s a s a s e rie s D C b lo c k . In a d d itio n , th e v a lu e s o f L 1 a n d C 2 m a y b e c h o s e n to fo rm a n im p e d a n c e m a tc h in g n e tw o rk o f th e lo a d im p e d a n c e is n o t 5 0 0 . O th e rw is e , th e v a lu e s o f L 1 a n d C 1 a re c h o s e n to fo rm a p a ra lle l-re s o n a n t ta n k c irc u it a t th e IF w h e n th e lo a d im p e d a n c e is 5 0 0 . 10 nF Evaluation Board Schematic (Download Bill of Materials from www.rfmd.com.) C3 15 pF T1 C4 15 pF L2 390 nH GC P1 P1-1 1 2 P1-3 3 VCC GND GC C1 10 nF C2 10 nF R1 1 k 1 2 3 4 C5 1 nF 2627400A CDMA J1 SMA 50 strip L1 390 nH 8 7 6 GAIN CONTROL 5 L3 390nH L4 390nH C8 15 pF C10 10 nF VCC OUT T2 R3 510 C9 15 pF VCC C6 10 nF C7 10 nF 50 strip J2 SMA R2 4.7 k Rev A5 DS050829 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 5 of 10 RF2637 Evaluation Board Layout Board Size 2.750" x 2.000" Board Thickness 0.031", Board Material FR-4 6 of 10 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. Rev A5 DS050829 RF2637 Rev A5 DS050829 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 7 of 10 RF2637 Gain versus VGC Across Temperature, 60.0 Input IP3 versus VGC Across Temperature, 0.0 VCC = 3.0V, FO = 85MHz VCC = 3.0V 40.0 -10.0 20.0 -20.0 0.0 Input IP3 (dBm) -40C 25C 85C Gain (dB) -30.0 -20.0 -40.0 -40.0 -50.0 -40C 25C 85C -60.0 0.0 0.5 1.0 1.5 2.0 2.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 -60.0 VGC (V) VGC (V) Noise Figure versus Frequency Across Temperature, 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0.0 0.0 50.0 100.0 150.0 200.0 250.0 300.0 350.0 400.0 450.0 -40C 25C 85C VCC = 3.0V, VGC = 2.5V Noise Figure (dB) Frequency (MHz) 8 of 10 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. Rev A5 DS050829 RF2637 Rev A5 DS050829 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 9 of 10 RF2637 10 of 10 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. Rev A5 DS050829 |
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