EVALUATION KIT AVAILABLE MAX19792 500MHz to 4000MHz Dual Analog Voltage Variable Attenuator with On-Chip 10-Bit SPI-Controlled DAC General Description Features The MAX19792 dual general-purpose analog voltage S Wideband Coverage variable attenuator (VVA) is designed to interface with 500MHz to 4000MHz RF Frequency Range 50I systems operating in the 500MHz to 4000MHz S High Linearity frequency range. The device includes a patented control Greater Than +37.9dBm IIP3 Over the Full circuit that provides 23.2dB of attenuation range (per Attenuation Range attenuator) with a typical linear control slope of 8.5dB/V. +22.7dBm Input P 1dB Both attenuators share a common analog control and S Integrates Two Analog Attenuators in One can be cascaded together to yield 46.4dB of total attenu- Monolithic Device ation range with a typical combined linear control slope S Two Convenient Control Options of 17dB/V (5V operation). Single Analog Voltage Alternatively, the on-chip 4-wire SPI-controlled 10-bit On-Chip SPI-Controlled 10-Bit DAC DAC can be used to control both attenuators. In addi- S Step-Up/Down Pulse Command Inputs tion, a step-up/down feature allows user-programmable S Flexible Attenuation Control Ranges attenuator stepping through command pulses without 23.2dB (Per Attenuator) reprogramming the SPI interface. 46.4dB (Both Attenuators Cascaded) The MAX19792 is a monolithic device designed using S Linear dB/V Analog Control Response Curve one of Maxims proprietary SiGe BiCMOS processes. The Simplifies Automatic Leveling Control and part operates from a single +5V supply or alternatively Gain-Trim Algorithms from a single +3.3V supply. It is available in a compact 36-pin TQFN package (6mm x 6mm x 0.8mm) with an S Excellent Attenuation Flatness Over Wide exposed pad. Electrical performance is guaranteed over Frequency Ranges and Attenuation Settings the -40NC to +100NC extended temperature range. S On-Chip Comparator (for Successive Approximation Measurement of Attenuator Applications Control Voltage) Broadband System Applications, Including S Low 13mA Supply Current Wireless Infrastructure Digital and S Single 5V or 3.3V Supply Voltage Spread-Spectrum Communication Systems S Pin-Compatible with the MAX19791 and MAX19793 WCDMA/LTE, TD-SCDMA/TD-LTE, WiMAX, M S Pin-Compatible with the MAX19794 with Addition cdma2000 , GSM/EDGE, and of Two Shunt Capacitors MMDS Base Stations S PCB-Compatible with the MAX19790 VSAT/Satellite Modems S Lead(Pb)-Free Package Microwave Point-to-Point Systems Lineup Gain Trim Temperature-Compensation Circuits Ordering Information appears at end of data sheet. Automatic Level Control (ALC) Transmitter Gain Control Receiver Gain Control For related parts and recommended products to use with this part, refer to www.maximintegrated.com/MAX19792.related. General Test Equipment WiMAX is a registered certification mark and registered service mark of WiMAX Forum. cdma2000 is a registered trademark of Telecommunications Industry Association. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maximintegrated.com. 19-6382 Rev 2 5/15MAX19792 500MHz to 4000MHz Dual Analog Voltage Variable Attenuator with On-Chip 10-Bit SPI-Controlled DAC ABSOLUTE MAXIMUM RATINGS V .......................................................................-0.3V to +5.5V RF Input Power at IN A, IN B, OUT A, OUT B ...........+20dBm CC REF IN ..............................-0.3V to Minimum (V + 0.3V, 3.6V) Continuous Power Dissipation (Note 1) ..............................2.8W CC REF SEL DAC LOGIC, MODE, DWN, UP, Operating Case Temperature Range (Note 2)-40NC to +100NC , DIN, CLK, CS ............... -0.3V to Minimum (V + 0.3V, 3.6V) Maximum Junction Temperature .....................................+150NC CC COMP OUT, DOUT ..............................................-0.3V to +3.6V Storage Temperature Range ............................ -65NC to +150NC IN A, OUT A, IN B, OUT B .......................-0.3V to V + 0.3V Lead Temperature (soldering, 10s) ................................+300NC CC CTRL (except for test mode) .......................-0.3V to V + 0.3V Soldering Temperature (reflow) ......................................+260NC CC Maximum CTRL Pin Load Current (CTRL configured as an output) ....................................0.3mA Note 1: Based on junction temperature T = T + (B x V x I ). This formula can be used when the temperature of the J C JC CC CC exposed 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 +150NC. Note 2: T is the temperature on the exposed pad of the package. T is the ambient temperature of the device and PCB. C A Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional opera- tion 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. PACKAGE THERMAL CHARACTERISTICS TQFN Junction-to-Ambient Thermal Resistance (q ) Junction-to-Case Thermal Resistance (q ) JA JC (Notes 3, 4) ............................................................... +36NC/W (Notes 1, 4) ............................................................... +10NC/W Note 3: Junction temperature T = T + (B 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 +150NC. 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.maximintegrated.com/thermal-tutorial. 3.3V DC ELECTRICAL CHARACTERISTICS (V = 3.15V to 3.45V, V = 1V, V = 0V, RDBK EN(D9, REG3) = logic 0, no RF signals applied, all input and output CC CTRL DAC LOGIC ports terminated with 50I through DC blocks, T = -40NC to +100NC, unless otherwise noted. Typical values are at V = 3.3V, C CC V = 1V, V = 0V, RDBK EN(D9, REG3) = logic 0, T = +25NC, unless otherwise noted.) (Note 5) CTRL DAC LOGIC C PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage V 3.15 3.3 3.45 V CC Supply Current I 9.5 14 mA CC Control Voltage Range V 1 2.5 V CTRL CTRL Input Resistance R 1.0 MI CTRL Input Current Logic-High I -1 +1 A IH Input Current Logic-Low I -1 +1 A IL REF IN Voltage 1.4 V REF IN Input Resistance 1.0 MI DAC Number of Bits Monotonic 10 Bits Input Voltage Logic-High V 2 V IH Input Voltage Logic-Low V 0.8 V IL RDBK EN(D9, REG3) = logic 1, COMP OUT Logic-High 3.3 V R = 47kI LOAD RDBK EN(D9, REG3) = logic 1, COMP OUT Logic-Low 0 V R = 47kI LOAD Maxim Integrated 2