HMC628LP4 / 628LP4E v07.0410 BiCMOS MMIC 5-Bit DIGITAL VARIABLE GAIN AMPLIFIER, 50 - 800 MHz Typical Applications Features The HMC628LP4(E) is ideal for: TTL/CMOS compatible serial, parallel or latched parallel control interface • Cellular/3G Infrastructure High Output IP3: +35 dBm (At all gain settings) • WiBro / WiMAX / 4G Wide Gain Control Range: 23 dB • Microwave Radio & VSAT Power-up State Selection • Test Equipment and Sensors 24 Lead 4x4 mm SMT Package: 16 mm2 • IF & RF Applications Excellent State & Step Accuracy (±0.05 dB) General Description Functional Diagram The HMC628LP4(E) is a digitally controlled variable gain amplifier which operates from 50 to 800 MHz, and can be programmed to provide anywhere from 8 dB attenuation, to 15 dB of gain, in 1.0 dB steps. The HMC628LP4(E) delivers noise figure of 5 dB in its maximum gain state, with output IP3 of up to +35 dBm in any state. The dual mode control interface is CMOS/ TTL compatible, and accepts either a three wire serial input or a 5 bit parallel word. The HMC628LP4(E) also features a user selectable power up state and a serial output port for cascading other Hittite serial controlled components. The HMC628LP4(E) is housed in a RoHS compliant 4x4 mm QFN leadless package, and is available in three evaluation board configurations, depending on the application frequency. VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT 12 Electrical Specifi cations, TA = +25° C, 50 Ohm System, Vdd= +5V 50 - 250 Min. Gain (Maximum Gain State) 13 Gain Control Range Typ. Max. 15 Min. 12.8 23 Typ. 500 - 800 Max. 14 Min. Typ. MHz 10.5 Max. Units 13 dB 23 23 dB Input Return Loss 12 10 10 dB Output Return Loss 10 12.5 9 dB Gain Accuracy: (Referenced to Maximum Gain State) ± (0.1 + 1% of Gain Setting )Max ± (0.4 + 2% of Gain Setting )Max ± (0.4 + 4% of Gain Setting )Max dB Output Power for 1dB Compression 19 16 14 18 dBm Output Third Order Intercept Point 35 [1] 33 [2] 32 [3] dBm Output Second Order Intercept Point 46 [1] 54 [2] 55 [3] dBm 46 69 55 75 62 83 dBc dBc Harmonics 2nd 3rd 19.5 Switching Characteristics tRISE, tFALL (10 / 90% RF) tON, tOFF ( Latch Enable to 10 / 90% RF) 18 11 18 Noise Figure 5 Supply Current (Idd) 65 [1] Two-Tone Output Power @ 5 dBm 12 - 34 250 - 500 Parameter [2] Two-Tone Output Power @ 2 dBm ns ns 6 85 65 6.5 85 65 dB 85 mA [3] Two-Tone Output Power @ 0 dBm For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or [email protected] HMC628LP4 / 628LP4E v07.0410 BiCMOS MMIC 5-Bit DIGITAL VARIABLE GAIN AMPLIFIER, 50 - 800 MHz 50 to 250 MHz Tuning Normalized Attenuation (Only Major States are Shown) Maximum Gain vs. Frequency 0 20 15 GAIN (dB) 10 5 0 -5 -10 +25 C +85 C -40 C -15 -20 -25 0.05 0.1 0.15 0.2 -5 -10 -15 -20 -25 -30 -35 0.05 0.25 0.1 FREQUENCY (GHz) 0.15 Output Return Loss (Only Major States are Shown) (Only Major States are Shown) 0 0 -5 -5 -10 -10 RETURN LOSS (dB) RETURN LOSS (dB) Input Return Loss -15 -20 -25 -30 -35 -40 0.05 12 -20 -25 -30 -35 0.1 0.15 0.2 -40 0.05 0.25 0.1 40 55 35 50 IP3 (dBm) 60 30 40 20 35 FREQUENCY (MHz) 0.25 0.2 0.25 45 25 0.15 0.2 Output IP2 vs. Frequency 45 0.1 0.15 FREQUENCY (GHz) Output IP3 vs. Frequency IP3 (dBm) 0.25 -15 FREQUENCY (GHz) 15 0.05 0.2 FREQUENCY (GHz) 0.2 0.25 30 0.05 0.1 0.15 FREQUENCY (MHz) For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or [email protected] VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT NORMALIZED ATTENUATION (dB) 25 12 - 35 HMC628LP4 / 628LP4E v07.0410 BiCMOS MMIC 5-Bit DIGITAL VARIABLE GAIN AMPLIFIER, 50 - 800 MHz 50 to 250 MHz Tuning Bit Error vs. Frequency Bit Error vs. Attenuation State (Only Major States are Shown) 2 1 1.5 0.8 (50, 100, 150, 200, 250) MHz 0.6 BIT ERROR (dB) BIT ERROR (dB) 1 0.5 0 -0.5 0.4 0.2 0 -0.2 -0.4 -1 -0.6 -1.5 -2 0.05 12 - 36 -1 0.1 0.15 0.2 0.25 0 4 8 FREQUENCY (GHz) 12 16 20 24 ATTENUATION STATE (dB) Normal Relative Phase vs. Frequency Step Error vs. Frequency (Only Major States are Shown) (Only Major States are Shown) 30 1 0.6 15 STEP ERROR (dB) RELATIVE PHASE (deg) 0.8 0 1 - 23 dB 0.4 0.2 0 -0.2 -0.4 -15 -0.6 -0.8 -30 0.05 0.1 0.15 0.2 -1 0.05 0.25 0.1 0.15 0.2 0.25 FREQUENCY (GHz) FREQUENCY (GHz) Output IP3 vs. Attenuation @ 150 MHz Noise Figure vs. Frequency 45 10 9 40 8 7 35 IP3 (dBm) NOISE FIGURE (dB) VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT 12 -0.8 6 5 4 30 25 3 2 20 1 0 0.05 15 0.1 0.15 FREQUENCY (GHz) 0.2 0.25 0 5 10 15 20 25 ATTENUATION (dB) For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or [email protected] HMC628LP4 / 628LP4E v07.0410 BiCMOS MMIC 5-Bit DIGITAL VARIABLE GAIN AMPLIFIER, 50 - 800 MHz 250 to 500 MHz Tuning Normalized Attenuation Maximum Gain vs. Frequency (Only Major States are Shown) 0 20 15 GAIN (dB) 10 5 0 -5 -10 +25 C +85 C -40 C -15 -20 -25 0.2 0.3 0.4 0.5 -5 -10 -15 -20 -25 -30 -35 0.2 0.6 0.3 0.4 Output Return Loss (Only Major States are Shown) (Only Major States are Shown) 0 0 -5 -5 -10 -10 RETURN LOSS (dB) RETURN LOSS (dB) Input Return Loss -15 -20 -25 -30 -35 -40 0.2 0.5 0.6 -20 -25 -30 -35 0.3 0.4 0.5 -40 0.2 0.6 0.3 Output IP2 vs. Frequency 80 40 70 35 60 IP2 (dBm) 45 30 50 25 40 20 30 0.3 0.35 0.4 FREQUENCY (MHz) 0.4 FREQUENCY (GHz) Output IP3 vs. Frequency IP3 (dBm) 0.6 -15 FREQUENCY (GHz) 15 0.25 0.5 FREQUENCY (GHz) FREQUENCY (GHz) 0.45 0.5 20 0.25 0.3 0.35 0.4 0.45 0.5 FREQUENCY (MHz) For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or [email protected] 12 VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT NORMALIZED ATTENUATION (dB) 25 12 - 37 HMC628LP4 / 628LP4E v07.0410 BiCMOS MMIC 5-Bit DIGITAL VARIABLE GAIN AMPLIFIER, 50 - 800 MHz 250 to 500 MHz Tuning Bit Error vs. Frequency Bit Error vs. Attenuation State (Only Major States are Shown) 2 1 1.5 0.8 (250, 300, 350, 400, 450, 500) MHz 0.6 BIT ERROR (dB) BIT ERROR (dB) 1 0.5 0 -0.5 0.4 0.2 0 -0.2 -0.4 -1 -0.6 -1.5 -0.8 -1 -2 12 - 38 0.3 0.4 0.5 0.6 0 4 8 FREQUENCY (GHz) 12 16 20 24 ATTENUATION STATE (dB) Normal Relative Phase vs. Frequency Step Error vs. Frequency (Only Major States are Shown) (Only Major States are Shown) 80 1 0.8 0.6 23 dB 40 STEP ERROR (dB) RELATIVE PHASE (deg) 60 16 dB 8 dB 20 0 0.4 0.2 0 -0.2 -0.4 -0.6 1 - 4 dB -20 -0.8 -40 0.2 0.3 0.4 0.5 -1 0.2 0.6 0.3 0.4 0.5 0.6 FREQUENCY (GHz) FREQUENCY (GHz) Output IP3 vs. Attenuation @ 350 MHz Noise Figure vs. Frequency 45 10 9 40 8 7 35 IP3 (dBm) NOISE FIGURE (dB) VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT 12 0.2 6 5 4 30 25 3 2 20 1 0 0.2 15 0.3 0.4 FREQUENCY (GHz) 0.5 0.6 0 5 10 15 20 25 ATTENUATION (dB) For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or [email protected] HMC628LP4 / 628LP4E v07.0410 BiCMOS MMIC 5-Bit DIGITAL VARIABLE GAIN AMPLIFIER, 50 - 800 MHz 500 to 800 MHz Tuning Normalized Attenuation Maximum Gain vs. Frequency (Only Major States are Shown) 0 25 20 -5 RELATIVE PHASE (deg) 15 5 0 -5 -10 +25 C +85 C -40 C -15 -15 -20 -25 -30 -20 -25 0.4 -10 0.5 0.6 0.7 0.8 -35 0.4 0.9 0.5 FREQUENCY (GHz) 0.6 0.7 Output Return Loss (Only Major States are Shown) (Only Major States are Shown) 0 0 -5 -5 -10 -10 RETURN LOSS (dB) RETURN LOSS (dB) Input Return Loss -15 -20 -25 -30 -35 -40 0.4 0.8 0.9 -20 -25 -30 -35 0.5 0.6 0.7 0.8 -40 0.4 0.9 0.5 40 70 35 60 IP2 (dBm) 80 30 50 25 40 20 30 0.6 0.65 0.7 Output IP2 vs. Frequency 45 0.55 0.6 FREQUENCY (GHz) Output IP3 vs. Frequency IP3 (dBm) 0.9 -15 FREQUENCY (GHz) 15 0.5 0.8 FREQUENCY (GHz) 0.7 FREQUENCY (MHz) 0.75 0.8 20 0.5 0.55 0.6 0.65 0.7 0.75 0.8 FREQUENCY (MHz) For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or [email protected] 12 VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT GAIN (dB) 10 12 - 39 HMC628LP4 / 628LP4E v07.0410 BiCMOS MMIC 5-Bit DIGITAL VARIABLE GAIN AMPLIFIER, 50 - 800 MHz 500 to 800 MHz Tuning Bit Error vs. Frequency Bit Error vs. Attenuation State (Only Major States are Shown) 2 1 1.5 0.8 0.6 700 MHz BIT ERROR (dB) BIT ERROR (dB) 1 0.5 0 -0.5 0.4 0.2 0 -0.2 -0.4 -1 800 MHz -0.6 -1.5 -0.8 -1 -2 12 - 40 0.5 0.6 0.7 0.8 0.9 0 4 8 12 16 Normal Relative Phase vs. Frequency Step Error vs. Frequency (Only Major States are Shown) (Only Major States are Shown) 0 24 1 0.8 -5 16 dB 0.6 STEP ERROR (dB) RELATIVE PHASE (deg) 20 ATTENUATION STATE (dB) FREQUENCY (GHz) -10 -15 -20 -25 0.4 0.2 0 -0.2 -0.4 23 dB -0.6 -30 -35 0.4 -0.8 0.5 0.6 0.7 0.8 -1 0.4 0.9 0.5 0.6 0.7 0.8 0.9 FREQUENCY (GHz) FREQUENCY (GHz) Output IP3 vs. Attenuation @ 650 MHz Noise Figure vs. Frequency 45 10 9 40 8 7 35 IP3 (dBm) NOISE FIGURE (dB) VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT 12 0.4 6 5 4 30 25 3 2 20 1 0 0.4 15 0.5 0.6 FREQUENCY (GHz) 0.7 0.8 0 5 10 15 20 25 ATTENUATION (dB) For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or [email protected] HMC628LP4 / 628LP4E v07.0410 BiCMOS MMIC 5-Bit DIGITAL VARIABLE GAIN AMPLIFIER, 50 - 800 MHz Serial Control Interface The HMC628LP4(E) contains a 3-wire SPI compatible digital interface (DATA, CLK, LE). It is activated when P/S is kept high. The 5-bit serial word must be loaded MSB first. The positive-edge sensitive CLK and LE requires clean transitions. Standard logic families work well. If mechanical switches were used, sufficient debouncing should be provided. When LE is high, 5-bit data in the serial input register is transferred to the attenuator. When LE is high CLK is masked to prevent data transition during output loading. When P/S is low, 3-wire SPI interface inputs (DATA, CLK, LE) are disabled and serial input register is loaded asynchronously with parallel digital inputs (B0-B4). When Le is high, 5-bit parallel data is transferred to the attenuator. For all modes of operations, attenuation state will stay constant while LE is kept low. Parameter Typ. Min. serial period, tSCK 100 ns Control set-up time, tCS 20 ns Control hold-time, tCH 20 ns LE Set up-time, tLN 10 ns Min. LE pulse width, tLEW 10 ns Min LE pulse spacing, tLES 530 ns Serial clock hold-time from LE, tCKN 10 ns Hold Time, tPH 0 ns Latch Enable Minimum Width, tLEN 10 ns Setup Time, tPS 2 ns Timing Diagram (Latched Parallel Mode) Parallel Mode (Direct Parallel Mode & Latched Parallel Mode) Note: The parallel mode is enabled when P/S is set to low. Direct Parallel Mode - The attenuation state is changed by the Control Voltage Inputs directly. The LE (Latch Enable) must be at a logic high to control the attenuator in this manner. Latched Parallel Mode - The attenuation state is selected using the Control Voltage Inputs and set while the LE is in the Low state. The attenuator will not change state while LE is Low. Once all Control Voltage Inputs are at the desired states the LE is pulsed. See timing diagram above for reference. For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or [email protected] VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT 12 12 - 41 HMC628LP4 / 628LP4E v07.0410 BiCMOS MMIC 5-Bit DIGITAL VARIABLE GAIN AMPLIFIER, 50 - 800 MHz Power-Up States PUP Truth Table If LE is set to logic LOW at power-up, the logic state of PUP1 and PUP2 determines the power-up state of the part per PUP truth table. If the LE is set to logic HIGH at power-up, the logic state of B4-B0 determines the power-up state of the part per truth table. The DVGA latches in the desired power-up state approximately 200 ms after power-up. VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT 12 - 42 The ideal power-up sequence is: GND, Vdd, digital inputs, RF inputs. The relative order of the digital inputs are not important as long as they are powered after Vdd / GND RF Output Power Digital Inputs (B0-B4, Shift Clock, Latch Enable & Data Input) PUP2 Gain Relative to Maximum Gain 0 0 0 Insertion Loss 0 1 0 -8 0 0 1 -16 0 1 1 -23 1 X X 0 to -23 dB Truth Table ATTENUATION (dB) B4[1] B3 [1] B2 B1 B0 20 dBm 0 0 0 0 0 0 22 dBm 1 0 0 0 0 1 2 0 0 0 1 0 3 0 0 0 1 1 Absolute Maximum Ratings RF Input Power PUP1 Note: Power-Up with LE= 1 provides direct parallel operation with B4-B0. Power-On Sequence 12 LE -0.5V to Vdd +0.5V Bias Voltage (Vdd) 5.6 V 4 0 0 1 0 0 Junction Temperature 125 °C 5 0 0 1 0 1 6 0 0 1 1 0 7 0 0 1 1 1 8 0 1 0 0 0 9 0 1 0 0 1 Continuous Pdiss (T = 85 °C) (derate 13.5 mW/°C above 85 °C) [1] 0.54 W Thermal Resistance (Junction to ground paddle) 74.3 °C/W Storage Temperature -65 to +150 °C 10 0 1 0 1 0 Operating Temperature -40 to +85 °C 11 0 1 0 1 1 12 0 1 1 0 0 13 0 1 1 0 1 14 0 1 1 1 0 Bias Voltage Vdd (V) Idd (Typ.) (mA) 5V 65 Control Voltage Table State Vdd = +3V Vdd = +5V Low 0 to 0.5V @ <1 μA 0 to 0.8V @ <1 μA High 2 to 3V @ <1 μA 2 to 5V @ <1 μA 15 0 1 1 1 1 16 1 X 0 0 0 17 1 X 0 0 1 18 1 X 0 1 0 19 1 X 0 1 1 20 1 X 1 0 0 21 1 X 1 0 1 22 1 X 1 1 0 23 1 X 1 1 1 [1] Enabling B4 disables B3, the minimum attenuation is 16 dB ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or [email protected] HMC628LP4 / 628LP4E v07.0410 BiCMOS MMIC 5-Bit DIGITAL VARIABLE GAIN AMPLIFIER, 50 - 800 MHz Outline Drawing NOTES: 1. LEADFRAME MATERIAL: COPPER ALLOY 2. DIMENSIONS ARE IN INCHES [MILLIMETERS] 3. LEAD SPACING TOLERANCE IS NON-CUMULATIVE. 4. PAD BURR LENGTH SHALL BE 0.15mm MAXIMUM. PAD BURR HEIGHT SHALL BE 0.05mm MAXIMUM. 5. PACKAGE WARP SHALL NOT EXCEED 0.05mm. 6. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED TO PCB RF GROUND. 7. REFER TO HITTITE APPLICATION NOTE FOR SUGGESTED LAND PATTERN. Package Information Part Number Package Body Material Lead Finish MSL Rating HMC628LP4 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 HMC628LP4E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 Package Marking [3] [1] H628 XXXX [2] H628 XXXX [1] Max peak reflow temperature of 235 °C [2] Max peak reflow temperature of 260 °C [3] 4-Digit lot number XXXX For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or [email protected] VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT 12 12 - 43 HMC628LP4 / 628LP4E v07.0410 BiCMOS MMIC 5-Bit DIGITAL VARIABLE GAIN AMPLIFIER, 50 - 800 MHz Pin Descriptions VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT 12 12 - 44 Pin Number Function Description 1 RFIN This pin is DC coupled and matched to 50 Ohms. A blocking capacitor is needed. 2 GND These pins and package bottom must be connected to RF/DC ground. 3-7 B4, B3, B2, B1, B0 8 LE 9 DATA 10 CLK 12 PUP2 13 PUP1 14 P/S 15 SERIAL OUT Serial input data delayed by 5 clock cycles. 16 IBIAS Bias current to amplifier. External inductor is needed. 17 ISET External bias resistor to adjust the current of the amplifier. 18 Vdd Supply Voltage. 19 FB Interface Schematic See Truth Table, Control Voltage Table and Timing Diagram. Feedback capacitance for the amplifier. For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or [email protected] HMC628LP4 / 628LP4E v07.0410 BiCMOS MMIC 5-Bit DIGITAL VARIABLE GAIN AMPLIFIER, 50 - 800 MHz Pin Number Function Description 11, 20 RFOUT, AMP IN Amplifier input. External blocking capacitor required. 21 ATT OUT Attenuator output. Interface Schematic 22 - 24 FC1, FC2, FC3 External capacitors to ground are required. Place these capacitors close to the package. For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or [email protected] VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT 12 12 - 45 HMC628LP4 / 628LP4E v07.0410 BiCMOS MMIC 5-Bit DIGITAL VARIABLE GAIN AMPLIFIER, 50 - 800 MHz Application Circuit VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT 12 12 - 46 Components For Selected Frequencies Tuned Frequency 50 - 250 MHz 250 - 500 MHz 500 - 800 MHz Evaluation Board P/N 118415 120101 120102 C6 1 nF 33 pF 33 pF L3 0 Ohms 15 nH 12 nH C14 N/A 4.7 pF 1.5 pF For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or [email protected] HMC628LP4 / 628LP4E v07.0410 BiCMOS MMIC 5-Bit DIGITAL VARIABLE GAIN AMPLIFIER, 50 - 800 MHz Evaluation PCB List of Materials for Evaluation PCB See Table[1] Item Description Item Description J1, J2 PCB Mount SMA Connector SW1, SW2 J3 18 Pin DC Connector U1 HMC628LP4(E) Variable Gain Amplifier J6, J7 DC Pin PCB [2] 118413 Evaluation PCB C1, C3 100 pF Capacitor, 0402 Pkg. C2 4.7 μF Capacitor, 0805 Pkg. C4 0.1 μF Capacitor, 0402 Pkg. C6, C14 0402 Pkg.[1] C5 - C7, C9 - C12 1000 pF Capacitor, 0402 Pkg. C8 10 kpF Capacitor, 0805 Pkg. R1 - R12 100 kOhm Resistor, 0402 Pkg. R15 - R19 39 kOhm Resistor, 0402 Pkg. R23 1.4 kOhm Resistor, 0603 Pkg. L1, L2 270 nH Inductor, 0603 Pkg. L3 0402 Pkg.[1] SPDT 4 Position Dip Switch [1] When requesting an evaluation board, please reference the appropriate PCB number listed in the table “Components for Selected Frequencies.” [2] Circuit Board Material: Arlon 25FR / FR4 The circuit board used in the application should use RF circuit design techniques. Signal lines should have 50 Ohm impedance while the package ground leads and exposed paddle should be connected directly to the ground plane similar to that shown. A sufficient number of via holes should be used to connect the top and bottom ground planes. The evaluation circuit board shown is available from Hittite upon request. For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or [email protected] VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT 12 12 - 47