RF2607 10 CDMA/FM RECEIVE AGC AMPLIFIER Typical Applications • CDMA/FM Cellular Systems • General Purpose Linear IF Amplifier • Supports Dual-Mode AMPS/CDMA • Commercial and Consumer Systems • Supports Dual-Mode TACS/CDMA • Portable Battery-Powered Equipment Product Description 0.196 0.189 0.025 GaAs HBT GaAs MESFET SiGe HBT Si CMOS 0.0688 0.0532 0.2440 0.2284 8° MAX 0°MIN 0.050 0.016 0.0098 0.0075 NOTES: 1. Shaded lead is Pin 1. 2. All dimensions are excluding mold flash. 3. Lead coplanarity - 0.005 with respect to datum "A". Optimum Technology Matching® Applied Si Bi-CMOS 0.0098 0.0040 0.012 0.008 10 Package Style: SSOP-16 Features IF AMPLIERS The RF2607 is a complete AGC amplifier designed for the receive section of dual-mode CDMA/FM cellular applications. It is designed to amplify IF signals while providing more than 90dB of gain control range. Noise Figure, IP3, and other specifications are designed to be compatible with the IS-95 Interim Standard for CDMA cellular communications. This circuit is designed as part of the RFMD CDMA chipset, consisting of a Transmit IF AGC Amp, a Transmit Upconverter, a Receive LNA/Mixer, and this Receive IF AGC Amp. The IC is manufactured on an advanced high frequency Silicon Bipolar process, and is packaged in a standard miniature 16-lead plastic SSOP package. üSi BJT -A- 0.157 0.150 • Supports Dual Mode Operation GAIN CONTROL 16 GC • -48dB to +48dB Gain Control Range 15 VCC • IS95 CDMA Compatible 14 VCC • Digitally Selectable Inputs FM+ 4 13 VCC • -2dBm Input IP3 FM- 5 12 GND GND 6 11 GND CDMA+ 1 CDMA- 2 GND 3 IN SEL. IN SELECT 7 10 OUT+ NC 8 9 OUT- Functional Block Diagram Rev B2 010720 • 12MHz to 285MHz Operation Ordering Information RF2607 RF2607 PCBA CDMA/FM Receive AGC Amplifier Fully Assembled Evaluation Board RF Micro Devices, Inc. 7628 Thorndike Road Greensboro, NC 27409, USA Tel (336) 664 1233 Fax (336) 664 0454 http://www.rfmd.com 10-1 RF2607 Absolute Maximum Ratings Parameter Supply Voltage Control Voltage Input RF Power Operating Ambient Temperature Storage Temperature Parameter Value Unit -0.5 to +7.0 -0.5 to +5.0 +10 -40 to +85 -40 to +150 VDC VDC dBm °C °C Specification Min. Typ. Max. Caution! ESD sensitive device. RF Micro Devices believes the furnished information is correct and accurate at the time of this printing. However, RF Micro Devices reserves the right to make changes to its products without notice. RF Micro Devices does not assume responsibility for the use of the described product(s). Unit T=25°C, 85MHz, VCC =3.6V, ZS =500 Ω, ZL =500Ω, 500Ω External CDMA Input Terminating Resistor, 500Ω External Output Terminating Resistor (Effective ZS =333Ω, Effective ZL =250Ω) (See application schematic) Overall Frequency Range CDMA Maximum Gain CDMA Minimum Gain FM Maximum Gain FM Minimum Gain Gain Slope Gain Control Voltage Range Gain Control Input Impedance Noise Figure Input IP3 IF AMPLIERS 10 Stability (Max VSWR) Condition +45 +45 -44 12 to 285 +48 -48 +49 -48 47 0 to 3 30 5 -40 -2 -45 -45 MHz dB dB dB dB dB/V VDC kΩ dB dBm dBm 10:1 VGC =2.9V VGC =0.2V VGC =2.9V VGC =0.2V Measured in 0.5V increments Source impedance of 4.7kΩ At maximum gain and 85MHz At +40dB gain, referenced to 500Ω At minimum gain, referenced to 500Ω Spurious<-70dBm IF Input Input Impedance Input Impedance CDMA to FM Isolation 1 850 30 kΩ Ω dB 3.3 to 3.6 13 14 V mA mA CDMA, differential FM, single-ended Power Supply Voltage Current Consumption Current Consumption 10-2 17 Minimum gain Maximum gain Rev B2 010720 RF2607 Function CDMA+ 2 3 CDMAGND 4 FM+ 5 6 7 FMGND IN SELECT 8 NC 9 OUT- 10 11 12 13 OUT+ GND GND VCC 14 15 16 VCC VCC GC 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 1kΩ, while the single-ended input impedance is 500Ω. Same as pin 2, except complementary input. Ground connection. For best performance, keep traces physically short and connect immediately to ground plane. FM balanced input pin. This pin is internally DC-biased and should be DC blocked if connected to a device with DC present. For single-ended input operation, one pin is used as an input and the other FM input is AC-coupled to ground. The balanced input impedance is 1.7kΩ, while the single-ended input impedance is 850Ω. Same as pin 4, except complementary input. Interface Schematic BIAS 700 Ω 700 Ω CDMA+ CDMA- See pin 1. BIAS 650 Ω 650 Ω FM+ FM- See pin 4. Same as pin 3. Selects which IF input (CDMA or FM) is used. This is a digitally controlled input. A logic "high" selects the CDMA input amplifier. A logic "low" selects the FM input amplifier. The threshold voltage is approximately 1.3V. No Connection pin. This pin is internally biased and should not be connected to any external circuitry, including ground or VCC. 20 kΩ IN SELECT Balanced output pin. This is an open-collector output, designed to OUT+ operate into a 250Ω 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 9, except complementary output. See pin 9. OUT- 10 IF AMPLIERS Pin 1 Same as pin 3. Same as pin 3. 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 13. Same as pin 13. Analog gain adjustment for all amplifiers. Valid control ranges are from 0V to 3.0V. Maximum gain is selected with 3.0V. Minimum gain is selected with 0V. These voltages are only valid for a 4.7kΩ DC source impedance. VCC 12.7 kΩ 23.5 kΩ 15 kΩ Rev B2 010720 10-3 RF2607 Application Schematic Measurement Reference Plane ZS=500 Ω Z S, EFF=333 Ω CDMA IF Filter CDMA+ R1: 1 kΩ CDMA- GAIN CONTROL 1 Z IN=1 kΩ 3 FM IF Filter Z IN=850 Ω FM IN GC 15 2 Z IN, EFF=500 Ω 4.7 kΩ 16 IN SEL. 10 nF 14 10 nF 4 13 5 12 6 11 10 nF ZS=850 Ω IF IN SELECT 7 NC 8 10 C1 L1 R2: 500Ω ZLOAD=500Ω C2 OUT+ C2 OUT- 9 ZLOAD,EFF=250 Ω R1 sets the CDMA balanced input impedance. The effective input impedance is then 500 Ω. R2 sets the balanced output impedance to 500 Ω. L1 and C2 serve dual purposes. L1 serves as an output bias choke, and C2 serves as a series DC block. In addition, the values of L1 and C2 may be chosen to form an impedance matching network of the load impedance is not 500 Ω. Otherwise, the values of L1 and C1 are chosen to form a parallelresonant tank circuit at the IF when the load impedance is 500 Ω. C1 L1 VCC Measurement Reference Plane 10 nF ZOUT=500 Ω IF AMPLIERS 10 VCC 10-4 Rev B2 010720 RF2607 Evaluation Board Schematic (Download Bill of Materials from www.rfmd.com.) L2 390 nH 50 Ω µstrip J1 CDMA L1 390 nH T1 C3 15 pF C1 10 nF R1 1 kΩ GAIN CONTROL 1 J2 FM 50 Ω µstrip C6 10 pF L3 330 nH C2 10 nF C5 10 nF 3 C7 10 nF P2-1 C8 10 nF P1 P1-1 P1-3 1 GC 2 GND 3 VCC P2-1 NC 1 SELECT 2 GND 3 2607400A IN SEL. P1-3 14 4 13 5 12 6 11 7 10 8 P2 P1-1 C14 10 nF 15 2 C4 15 pF R3 4.7 kΩ 16 9 C13 10 nF C12 15 pF T2 R2 500 Ω C11 15 pF L4 390 nH L5 390 nH C9 10 nF C10 10 nF 50 Ω µstrip J3 OUT P1-3 IF AMPLIERS 10 Rev B2 010720 10-5 RF2607 Evaluation Board Layout IF AMPLIERS 10 10-6 Rev B2 010720 RF2607 CDMA Gain versus Gain Control Voltage (VCC=3.6 V, 85 MHz) 60.0 50.0 50.0 40.0 40.0 30.0 30.0 20.0 20.0 10.0 10.0 Gain (dB) Gain (dB) FM Gain versus Gain Control Voltage (VCC=3.6 V, 85 MHz) 60.0 0.0 -10.0 -20.0 0.0 -10.0 -20.0 -30.0 -30.0 +25°C -40.0 -40.0 -30°C -50.0 -50.0 +80°C -60.0 +25°C -60.0 0.5 1.0 1.5 2.0 2.5 3.0 0.0 0.5 1.0 GC (volts) CDMA IIP3 versus Gain -20.0 -20.0 IIP3 (dBm) IIP3 (dBm) -10.0 -30.0 -40.0 -50.0 -50.0 -20.0 0.0 20.0 40.0 -60.0 -60.0 60.0 10 -40.0 -20.0 Gain (dB) 60.0 Noise Figure (dB) Noise Figure (dB) 60.0 50.0 40.0 30.0 10.0 Rev B2 010720 60.0 30.0 10.0 Gain (dB) 40.0 40.0 20.0 0.0 60.0 50.0 20.0 -20.0 40.0 20.0 (VCC=3.6 V, 85 MHz) 80.0 70.0 -40.0 20.0 FM Noise Figure versus Gain (VCC=3.6 V, 85 MHz) 70.0 0.0 -60.0 0.0 Gain (dB) CDMA Noise Figure versus Gain 80.0 3.0 -30.0 -40.0 -40.0 2.5 (VCC=3.6 V, 85 MHz) 0.0 -10.0 -60.0 -60.0 2.0 FM IIP3 versus Gain (VCC=3.6 V, 85 MHz) 0.0 1.5 GC (volts) IF AMPLIERS 0.0 40.0 60.0 0.0 -60.0 -40.0 -20.0 0.0 20.0 Gain (dB) 10-7 RF2607 CDMA Gain versus Gain Control Voltage CDMA OIP3 versus Gain (VCC=3.6V, 85 MHz) 60.0 (VCC=3.3 V, 85 MHz) 10.0 50.0 0.0 40.0 30.0 -10.0 10.0 OIP3 (dB) Gain (dB) 20.0 0.0 -10.0 -20.0 -30.0 -20.0 -40.0 -30.0 -40.0 -30 C -30 C -50.0 +25 C +25 C -50.0 +80 C +80 C -60.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 GC (volts) -60.0 -60.0 -40.0 -20.0 0.0 20.0 40.0 60.0 Gain (dB) CDMA IIP3 versus Gain (VCC=3.3 V, 85 MHz) 0.0 -30 C +25 C +80 C -10.0 IIP3 (dB) -20.0 10 -30.0 IF AMPLIERS -40.0 -50.0 -60.0 -60.0 -40.0 -20.0 0.0 20.0 40.0 60.0 Gain (dB) 10-8 Rev B2 010720