MAX19790 19-5165 Rev 0 3/10 250MHz to 4000MHz Dual, Analog Voltage Variable Attenuator General Description Features The MAX19790 dual, general-purpose analog voltage S 250MHz to 4000MHz RF Frequency Range variable attenuator (VVA) is designed to interface with S Integrates Two Analog Attenuators in One 50I systems operating in the 250MHz to 4000MHz fre- Monolithic Device quency range. Each attenuator includes a control circuit S Flexible Attenuation-Control Ranges that provides 22dB of attenuation range with a linear 22dB (per Attenuator) control slope of 10dB/V. 44dB (Both Attenuators Cascaded) Both attenuators share a common analog control and S 2.4dB 1500MHz Insertion Loss (per Attenuator) can be cascaded together to yield 44dB of total dynamic S Linear dB/V Analog Control Response Curve range, with a combined linear control slope of 20dB/V. Simplifies Automatic Leveling Control and The IC is a monolithic device designed on one of Maxims Gain-Trim Algorithms proprietary SiGe BiCMOS processes. The device oper- S Excellent Attenuation Flatness Over Wide ates from a single +5.0V supply and is available in a com- Frequency Ranges and Attenuation Settings pact, 36-pin thin QFN package (6mm x 6mm x 0.8mm) with an exposed pad. Electrical performance is guaran- S Low 7.3mA Supply Current teed over the extended -40 to +85C temperature range. S Single +5.0V Supply Voltage Applications Ordering Information Broadband System Applications, Including Wireless Infrastructure Digital and Spread- PART TEMP RANGE PIN-PACKAGE Spectrum Communication Systems MAX19790ETX+ -40NC to +85NC 36 Thin QFN-EP* WCDMA/LTE, TD-SCDMA/TD-LTE, WiMAX, MAX19790ETX+T -40NC to +85NC 36 Thin QFN-EP* cdma2000 , GSM/EDGE, and MMDS Base +Denotes a lead(Pb)-free/RoHS-compliant package. Stations *EP = Exposed pad. VSAT/Satellite Modems T = Tape and reel. Microwave Terrestrial Links Lineup Gain Trim Temperature Compensation Circuits Automatic Level Control (ALC) Transmitter Gain Control Receiver Gain Control General Test Equipment WiMAX is a trademark of WiMAX Forum. cdma2000 is a registered trademark of Telecommunications Industry Association. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.250MHz to 4000MHz Dual, Analog Voltage Variable Attenuator ABSOLuTE MAxIMuM RATINGS V to GND ..........................................................-0.3V to +5.5V Storage Temperature Range .........................-65C to +150C CC CTRL to GND (with V = +5.0V applied) ............0V to +4.75V Continuous Power Dissipation (T = +85C) (Note 1) .......2.1W CC C All Other Pins to GND .............................. -0.3V to (V + 0.3V) (Notes 2, 4) ............................................................ +10C/W CC JC RF Input .........................................................................+20dBm (Notes 3, 4) ............................................................ +35C/W JA Current into CTRL Pin (V grounded) .............................40mA Lead Temperature (soldering, 10s) ................................+300C CC Maximum Junction Temperature .....................................+150C Soldering Temperature (reflow) ......................................+260C Operating Temperature Range .......................... -40C to +85C Note 1: T is the temperature on the exposed pad of the package. T is the ambient temperature of the device and PCB. C A Note 2: Based on junction temperature T = T + ( x V x I ). This formula can be used when the temperature of the exposed J C JC CC CC pad is known while the device is soldered down to a PCB. See the Applications Information section for details. The junction temperature must not exceed +150C. Note 3: Junction temperature T = T + ( x V x I ). This formula can be used when the ambient temperature of the PCB is J A JA CC CC known. The junction temperature must not exceed +150C. Note 4: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four- layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. CAUTION ESD SENSITIVE DEVICE DC ELECTRICAL CHARACTERISTICS (V = +4.75V to +5.25V, V = +1.0V to +4.0V, no RF signals applied, all input and output ports terminated with 50I, T = CC CTRL C -40C to +85C, unless otherwise noted. Typical values are at V = +5.0V, V = +1.0V, T = +25C, unless otherwise noted.) CC CTRL C PARAMETER SYMBOL CONDITIONS MIN TYP MAx uNITS SuPPLY Supply Voltage V 4.75 5.0 5.25 V CC Supply Current I 7.3 9.5 mA CC CONTROL INPuT Control Voltage Range V (Note 5) 1.0 4.0 V CTRL Control Input Resistance R 50 kI CTRL RECOMMENDED AC OPERATING CONDITIONS PARAMETER SYMBOL CONDITIONS MIN TYP MAx uNITS RF Frequency Range f (Note 6) 250 4000 MHz RF 2 MAX19790