HMC629LP4

HMC629LP4 / 629LP4E v08.0112 Typical Applications Features The HMC629LP4(E) is ideal for: 3 dB LSB Steps to 45 dB • Cellular/3G Infrastructure Power-Up State Selection • WiBro / WiMAX / 4G Low Insertion Loss: 2.5 dB • Microwave Radio & VSAT TTL/CMOS Compatible, Serial, Parallel or Latched Parallel Control • IF & RF Applications ±0.25 dB Typical Step Error TE • Test Equipment and Sensors Single +3V or +5V Supply 24 Lead 4x4mm SMT Package: 16mm2 Functional Diagram General Description LE The HMC629LP4(E) is a broadband 4-bit GaAs IC Digital Attenuator in a low cost leadless SMT package. This versatile digital attenuator incorporates off-chip AC ground capacitors for near DC operation, making it suitable for a wide variety of RF and IF applications. The dual mode control interface is CMOS/TTL compatible, and accepts either a three wire serial input or a 4-bit parallel word. For applications which require only 33 dB of attenuation range, the HMC629LP4(E) provides excellent attenuation accuracy up to 10 GHz. The HMC629LP4(E) is housed in a RoHS compliant 4x4 mm QFN leadless package, and requires no external matching components. B SO Attenuators - Digital - SMT 3 dB LSB GaAs MMIC 4-BIT DIGITAL ATTENUATOR, DC - 6 GHz O Electrical Specifications, TA = +25° C, 50 Ohm System, with Vdd = +5V & Vctl = 0/+5V (Unless Otherwise Noted) Parameter Typ. Max. Units DC - 6 2.5 5 dB dB Attenuation Range DC - 6 45 dB Return Loss (ATTIN, ATTOUT, All Atten. States) DC - 6 17 dB ± (0.50 + 5% of Atten. Setting) Max. dB dB Insertion Loss Attenuation Accuracy: (Referenced to Insertion Loss) All Attenuation States 1 Frequency (GHz) Min. Information furnished by Analog Devices is believed to be accurate and reliable. However, no For price,2 delivery, andDrive, to place orders: AnalogMA Devices, For price, delivery andDevices to place orders: Hittite Microwave Elizabeth Chelmsford, 01824Inc., responsibility is assumed by Analog for its use, nor for any infringements of patents orCorporation, other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 rights of third parties that may result from its use. Specifications subject to change without notice. No Phone: 978-250-3343 Fax: 978-250-3373 Order at www.hittite.com Phone: On-line 781-329-4700 • Order online at www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Application Support: Phone: 1-800-ANALOG-D Trademarks and registered trademarks are the property of their respective owners. Application Support: Phone: 978-250-3343 or apps@hittite.com HMC629LP4 / 629LP4E v08.0112 3 dB LSB GaAs MMIC 4-BIT DIGITAL ATTENUATOR, DC - 6 GHz Normalized Attenuation Insertion Loss vs. Temperature (Only Major States are Shown) -5 -10 -15 -20 -30 -40 -50 -60 0 2 4 6 8 10 0 2 Input Return Loss 6 8 10 8 10 Output Return Loss (Only Major States are Shown) (Only Major States are Shown) 0 0 -5 -5 -10 -20 -25 -30 -40 0 B SO -15 -35 2 4 6 8 -10 -15 -20 -25 -30 -35 -40 10 0 2 FREQUENCY (GHz) O 6 (1, 2, 4, 5) GHz 6 6 (Only Major States are Shown) 10 8 4 FREQUENCY (GHz) Bit Error vs. Frequency Bit Error vs. Attenuation State 4 4 BIT ERROR (dB) BIT ERROR (dB) 4 FREQUENCY (GHz) LE FREQUENCY (GHz) RETURN LOSS (dB) -20 TE +25 C +85 C -40 C -10 2 0 -2 -4 2 0 -2 BIT 24 (7, 8, 10) GHz -6 Attenuators - Digital - SMT NORMALIZED ATTENUATION (dB) 0 RETURN LOSS (dB) INSERTION LOSS (dB) 0 -4 -8 ALL BITS -10 -6 0 5 10 15 20 25 30 ATTENUATION STATE (dB) 35 40 45 0 2 4 6 8 10 FREQUENCY (GHz) Information furnished by Analog Devices is believed to be accurate and reliable. However, no For price,2 delivery, andDrive, to place orders: AnalogMA Devices, For price, delivery andDevices to place orders: Hittite Microwave Elizabeth Chelmsford, 01824Inc., responsibility is assumed by Analog for its use, nor for any infringements of patents orCorporation, other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 rights of third parties that may result from its use. Specifications subject to change without notice. No Phone: 978-250-3343 Fax: 978-250-3373 Order at www.hittite.com Phone: On-line 781-329-4700 • Order online at www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Application Support: Phone: 1-800-ANALOG-D Trademarks and registered trademarks are the property of their respective owners. Application Support: Phone: 978-250-3343 or apps@hittite.com 2 HMC629LP4 / 629LP4E v08.0112 3 dB LSB GaAs MMIC 4-BIT DIGITAL ATTENUATOR, DC - 6 GHz Step Error vs. Frequency Normal Relative Phase vs. Frequency (Only Major States are Shown) 100 1.5 24 dB 80 BIT (3, 6, 12) ALL BITS 1 0.5 0 -0.5 -1 BIT 24 -1.5 45 dB 60 40 20 0 -20 -40 TE RELATIVE PHASE (deg) STEP ERROR (dB) (3, 6, 12) dB -60 -80 -100 -2 0 2 4 6 8 10 FREQUENCY (GHz) 1 2 3 4 5 6 7 8 9 10 FREQUENCY (GHz) LE Serial Control Interface 0 The HMC629LP4E contains a 3-wire SPI compatible digital interface (SERIN, CLK, LE). The serial control interface is activated when P/S is kept high. The 4-bit serial word must be loaded MSB first. The positive-edge sensitive CLK and LE requires clean transitions. If mechanical switches are used, sufficient debouncing should be provided. When LE is high, 4-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. B SO Attenuators - Digital - SMT 2 When P/S is low, 3-wire SPI interface inputs (SERIN, CLK, LE) are disabled and the input register is loaded with parallel digital inputs (D0-D5). When LE is high, 4-bit parallel data changes the state of the part per truth table. O For all modes of operations, the state will stay constant while LE is kept low. 3 Information furnished by Analog Devices is believed to be accurate and reliable. However, no For price,2 delivery, andDrive, to place orders: AnalogMA Devices, For price, delivery andDevices to place orders: Hittite Microwave Elizabeth Chelmsford, 01824Inc., responsibility is assumed by Analog for its use, nor for any infringements of patents orCorporation, other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 rights of third parties that may result from its use. Specifications subject to change without notice. No Phone: 978-250-3343 Fax: 978-250-3373 Order at www.hittite.com Phone: On-line 781-329-4700 • Order online at www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Application Support: Phone: 1-800-ANALOG-D Trademarks and registered trademarks are the property of their respective owners. Application Support: Phone: 978-250-3343 or apps@hittite.com HMC629LP4 / 629LP4E v08.0112 3 dB LSB GaAs MMIC 4-BIT DIGITAL ATTENUATOR, DC - 6 GHz 100 ns Control set-up time, tCS 20 ns Control hold-time, tCH 20 ns LE setup-time, tLN 10 ns Min. LE pulse width, tLEW 10 ns Min LE pulse spacing, tLES 630 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 Parallel Mode (Direct Parallel Mode & Latched Parallel Mode) LE 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. B SO 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 below for reference. Power-Up States O 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 D3-D0 determines the power-up state of the part per truth table. The attenuator latches in the desired power-up state approximately 200 ms after power-up. Power-On Sequence 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 Bias Voltage Vdd (Vdc) Idd (Typ.) (mA) 5 2.0 Control Voltage Table State Vdd = +3V Vdd = +5V Low 0 to 0.5V @