RF2377 4 PCS/CELLULAR TDMA/CDMA/W-CDMA LINEAR VARIABLE GAIN AMPLIFIER Typical Applications • CDMA PCS/Cellular Handsets • W-CDMA Handsets • TDMA PCS/Cellular Handsets Product Description The RF2377 is a linear variable gain amplifier suitable for use in TDMA and CDMA systems in the cellular or PCS band and for W-CDMA systems. The features of this device include linear gain control, high gain, and high linearity. The IC is manufactured on an advanced Gallium Arsenide Heterojunction Bipolar Transistor (GaAs HBT) process and is featured in an industry-standard miniature 6-lead plastic SOT package. 1.80 1.40 TEXT* 1.90 GENERAL PURPOSE AMPLIFIERS 4 .10 MAX. .50 .35 3.10 2.70 3.00 2.60 1.30 1.00 .25 .10 9° 1° .90 .70 *When Pin 1 is in upper left, text reads downward (as shown). .37 MIN. All dimensions in mm. Optimum Technology Matching® Applied Si BJT Si Bi-CMOS ü GaAs HBT GaAs MESFET SiGe HBT Si CMOS Package Style: SOT23-6 Features • 50dB Linear Gain Control Range • 24dB Maximum Gain • Single 2.7V to 3.3V Supply • 45mA Supply Current RF OUT 1 6 VCC • High Linearity GND 2 GC 3 ATT ATT 5 GND 4 RF IN Ordering Information RF2377 PCS/Cellular TDMA/CDMA/W-CDMA Linear Variable Gain Amplifier RF2377-410 PCBAFully Assembled Evaluation Board, PCS RF2377-411 PCBAFully Assembled Evaluation Board, W-CDMA Functional Block Diagram Rev A9 010411 RF Micro Devices, Inc. 7625 Thorndike Road Greensboro, NC 27409, USA Tel (336) 664 1233 Fax (336) 664 0454 http://www.rfmd.com 4-43 RF2377 Absolute Maximum Ratings Parameter Supply Voltage DC Current Operating Ambient Temperature Storage Temperature Parameter GENERAL PURPOSE AMPLIFIERS 4 Rating Unit 0 to +5.0 100 -20 to +85 -40 to +150 VDC mA °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 VCC =2.8V, VGC =2.0V, T=25°C Overall Usable Frequency Range Linear Gain Control Range Gain Control Slope 800 to 2200 MHz dB dB/V 50 70 VCC =2.8V, VGC =2.0V, T=25°C TDMA Operating Frequency Maximum Small Signal Gain Input VSWR Output IP3 Noise Figure Maximum Average Output Power Adjacent Channel Power Rejection Alternate Channel Power Rejection 22 +23 1880 24 1.5:1 +26 7 +8 -33 -61 27 2.5:1 MHz dB Over entire gain control range -32 dBm dB dBm dBc Maximum gain TDMA modulation TDMA modulation; POUT =+8dBm -57 dBc TDMA modulation; POUT =+8dBm VCC =2.8V, VGC =2.0V, T=25°C CDMA Operating Frequency Maximum Small Signal Gain Input VSWR Output IP3 Noise Figure Maximum Average Output Power 22 +23 Adjacent Channel Power Rejection 1880 24 1.5:1 +26 7 +11 27 2.5:1 MHz dB Over entire gain control range dBm dB dBm -53 dBc W-CDMA Operating Frequency Small Signal Gain Input VSWR Output IP3 Noise Figure Maximum Linear Output Power Adjacent Channel Power Rejection 4-44 Condition 20 -33 +22 4 32 +8 1920 to 1980 22 -32 1.5:1 +24 5 32.5 +9 -48 24 -31 2.5:1 MHz dB dB -46 dBm dB dB dBm dBc -43 dBc -43 dBc 6 34 Maximum gain CDMA modulation; VCC =3.0V, maximum gain setting, ACPR<-52dBc. CDMA modulation; VCC =3.0V. For PIN >-16dBm, adjustment of PIN is required to maintain ACPR performance over gain control range. For PIN < -16dBm, ACPR performance is maintained over entire gain control range. VCC =2.8V, T=25°C VGC =2.0V VGC =0.3V Over entire gain control range Maximum gain Minimum gain W-CDMA ACPR<-46dBc, VGC =2.0V W-CDMA modulation; VGC =2.0V, PIN <-12dBm W-CDMA modulation; Over entire gain control range, PIN <-17dBm W-CDMA modulation; VGC =1.0V, PIN <-14dBm Rev A9 010411 RF2377 Parameter Specification Min. Typ. Max. Unit Power Supply Supply Voltage Gain Control Voltage Supply Current VGC Current 40 2.8 2.7 to 3.3 0 to 2.0 45 56 60 20 1.5 V V V mA mA mA mA Condition T = 25°C Specifications Operating range VCC =2.8V, VGC =2.0V VCC =3.0V, VGC =2.0V VCC =2.8V, VGC =0.4V GENERAL PURPOSE AMPLIFIERS 4 Rev A9 010411 4-45 RF2377 Function RF OUT 2 GND 3 GC 4 5 RF IN GND 6 VCC GENERAL PURPOSE AMPLIFIERS 4 Pin 1 Description Interface Schematic RF output pin. This pin is DC coupled and requires VCC through a bias inductor sized accordingly to provide a high pass transformation with a series capacitor. Ground connection. Keep traces physically short and connect immediately to ground plane for best performance. Analog gain control pin. This pin controls the gain of the IC. Minimum gain occurs at VGC <0.4V and maximum gain is achieved with VGC =2.0V. 50dB of linear gain control with little variation of input P1dB is available. RF input pin. This pin is DC coupled. Ground connection. Keep traces physically short and connect immediately to ground plane for best performance. Power supply. This pin should be connected to a regulated supply and requires a bypass capacitor. Voltage is supplied through this pin to the first stage collector; this voltage also controls the bias. Gain may be tuned by adjusting the value of the feed inductor. Application Schematic RF IN 4 5 ATT ATT 2 47 nH 1 pF 4.7 nH VCC GC 3 100 pF 6 RF OUT 1 47 nF 3.3 nH Note orientation of package in this schematic. VCC W-CDMA Application Schematic 2.2 nH 15 pF RF IN 4 0.5 pF 5 ATT ATT 47 nH 2 1.2 pF 4.7 nH VCC GC 3 6 RF OUT 1 29 nH 15 pF 2.7 nH 29 nH Note orientation of package in this schematic. VCC 15 pF 4-46 1 uF Rev A9 010411 RF2377 Evaluation Board Schematic (W-CDMA) P1 1 VGC 2 GND P1-3 3 VREG/VCC P1-4 4 VREG/VCC 5 GND P1-1 J1 RF IN 50 Ω µstrip C1 15 pF L1 2.2 nH 4 4 C7 0.5 pF 5 L4 47 nH VREG/VCC C3 15 pF ATT ATT 2 6 L2 4.7 nH C6 1.2 pF C4 47 nH J2 RF OUT 1 L3 2.7 nH Note orientation of package in this schematic. 2377401- VGC 3 L5 47 nH VREG/VCC + C16 1 µF C5 15 pF Evaluation Board Schematic (PCS) P1 1 VGC 2 GND P1-3 3 VCC P1-4 4 5 J1 RF IN C1 100 pF C16 1 uF C4 47 nH R1 0 kΩ 4 L2 4.7 nH VREG 5 VGC 3 ATT ATT 6 C3 47 nF Rev A9 010411 VREG/VCC GND + P1-1 2 L3 2.2 nH 1 Note orientation of package in this schematic. C5 47 nF C6 1.2 pF J2 RF OUT 2377400A 4-47 GENERAL PURPOSE AMPLIFIERS C2 0.5 pF RF2377 Evaluation Board Layout (PCS) Board Size 2.0” x 2.0” Board Thickness 0.028”, Board Material FR-4 GENERAL PURPOSE AMPLIFIERS 4 4-48 Rev A9 010411 RF2377 Evaluation Board Layout (W-CDMA) Board Size 2.0” x 2.0” Board Thickness 0.028”, Board Material FR-4 GENERAL PURPOSE AMPLIFIERS 4 Rev A9 010411 4-49 RF2377 W-CDMA ACPR versus VGC at Various Maximum Output Powers; VCC = 2.8 V, Freq = 1950 MHz Gain versus VGC over Temperature W-CDMA Board; VCC = 2.8V, Freq = 1950 MHz -35.0 -40.0 30.0 Max Pout=+2dBm Max Pout=+3dBm Note: Below VGC=~0.9V, test equipment noise floor inhibits accurate ACP measurement Max Pout=+4dBm Max Pout=+6dBm 20.0 10.0 -45.0 Gain (dB) ACPR (dBc) Max Pout=+8dBm -50.0 0.0 -10.0 4 -55.0 T = -20°C GENERAL PURPOSE AMPLIFIERS -20.0 T = +25°C T = +85°C -60.0 -30.0 0.8 1.0 1.2 1.4 1.6 1.8 0.4 2.0 0.6 0.8 1.0 VGC (V) 1.2 1.4 1.6 1.8 2.0 VGC (V) ICC versus VGC over Temperature W-CDMA Board; VCC = 2.8V, Freq = 1950 MHz SWR versus VGC W-CDMA Board; VCC = 2.8 V, Freq = 1950 MHz 3.5 60.0 Input T = -20°C T = +25°C T = +85°C 50.0 Output 3.0 2.5 40.0 SWR ICC (mA) 2.0 30.0 1.5 20.0 1.0 10.0 0.5 0.0 0.0 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 VGC (V) VGC (V) Noise Figure versus VGC W-CDMA Board; VCC = 2.8 V, Freq = 1950 MHz 35.0 30.0 Noise Figure (dB) 25.0 20.0 15.0 10.0 5.0 0.0 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 VGC (V) 4-50 Rev A9 010411