HMC789ST89E

HMC789ST89E v01.0710 InGaP HBT GAIN BLOCK MMIC AMPLIFIER, 0.7 - 2.8 GHz Features High output ip3: +42 dBm High output p1dB: +25 dBm High Gain: 18 dB single supply: +5v 45% pAe @ +25 dBm pout industry standard soT89 package 8 Amplifiers - Driver & GAin Block - smT Typical Applications The Hmc789sT89e is ideal for: • cellular/4G • fixed Wireless & WlAn • cATv, cable modem & DBs • microwave radio & Test equipment • if & rf Applications Functional Diagram General Description The Hmc789sT89e is a high linearity GaAs inGap HBT gain block mmic operating from 0.7 to 2.8 GHz and packaged in an industry standard soT89 package. Utilizing a minimum number of external components and a single +5v supply, the amplifier output ip3 can be optimized to +45 dBm. The high output ip3 and high gain make the Hmc789sT89e ideal for use in pA driver & pre-driver applications in cellular/4G and fixed Wireless. Electrical Specifications, TA = +25°C, Vs= +5V [1] parameter frequency range Gain Gain variation over Temperature input return loss output return loss output power for 1dB compression (p1dB) saturated output power (psat) output Third order intercept (ip3) [2] noise figure supply current (icq) 21 17 min. Typ. 810 - 960 18 0.01 12 20 23.5 25.5 42 3.8 125 150 23 12 max. min. Typ. 1710 - 1990 13.5 0.01 12 15 25 27 42 3.8 125 150 22 10 max. min. Typ. 2420 - 2700 11 0.01 10 10 24 26 42 3.8 125 150 max. Units mHz dB dB / °c dB dB dBm dBm dBm dB mA [1] specifications and data reflect Hmc789sT89e measured using the respective application circuits for each designated frequency band found herein. contact the Hmc Applications Group for assistance in optimizing performance for your application. [2] Two-tone output power of +10 dBm per tone, 1 mHz spacing. 8-1 F or 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 apps@hittite.com HMC789ST89E v01.0710 InGaP HBT GAIN BLOCK MMIC AMPLIFIER, 0.7 - 2.8 GHz Gain vs. Temperature @ 900 MHz 24 22 20 Broadband Gain & Return Loss @ 900 MHz 25 15 RESPONSE (dB) S21 S11 S22 8 Amplifiers - Driver & GAin Block - smT 8-2 5 GAIN (dB) 18 16 14 +25 C +85 C - 40 C -5 -15 12 10 0.7 -25 0.4 0.6 0.8 1 1.2 1.4 0.8 0.9 FREQUENCY (GHz) 1 1.1 FREQUENCY (GHz) Input Return Loss vs. Temperature @ 900 MHz 0 +25 C +85 C - 40 C Output Return Loss vs. Temperature @ 900 MHz 0 -5 RETURN LOSS (dB) -10 -15 -20 -25 +25 C +85 C - 40 C RETURN LOSS (dB) -5 -10 -15 -20 0.7 0.8 0.9 FREQUENCY (GHz) 1 1.1 -30 0.7 0.8 0.9 FREQUENCY (GHz) 1 1.1 P1dB vs. Temperature @ 900 MHz 26 25 24 23 22 21 20 0.7 +25 C +85 C - 40 C Psat vs. Temperature @ 900 MHz 28 27 26 25 24 23 22 0.7 +25 C +85 C - 40 C P1dB (dBm) 0.8 0.9 FREQUENCY (GHz) 1 1.1 Psat (dBm) 0.8 0.9 FREQUENCY (GHz) 1 1.1 F or 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 apps@hittite.com HMC789ST89E v00.0409 InGaP HBT GAIN BLOCK MMIC AMPLIFIER, 0.7 - 2.8 GHz Output IP3 vs. Output Power @ 900 MHz 50 8 Amplifiers - Driver & GAin Block - smT Output IP3 vs. Temperature @ 900 MHz Pout = 10 dBm Each Tone 50 45 IP3 (dB) IP3 (dB) 45 40 40 35 +25 C +85 C - 40 C 35 +25 C +85 C - 40 C 30 0.7 30 0.8 0.9 FREQUENCY (GHz) 1 1.1 0 2 4 6 8 10 12 14 16 18 SINGLE TONE POUT (dBm) Noise Figure vs. Temperature @ 900 MHz 8 +25 C +85 C - 40 C Reverse Isolation vs. Temperature @ 900 MHz 0 6 NF (dB) -10 ISOLATION (dB) +25 C +85 C - 40 C 4 -20 2 -30 0 0.75 0.8 0.85 0.9 0.95 1 -40 0.7 0.8 0.9 FREQUENCY (GHz) 1 1.1 FREQUENCY (GHz) Gain, Power & IP3 vs. Supply Voltage @ 900 MHz 50 GAIN (dB), P1dB (dBm), OIP3 (dBm) Power Compression @ 900 MHz 50 Pout (dBm), GAIN (dB), PAE (%) 40 Gain P1dB OIP3 40 Pout Gain PAE 30 30 20 20 10 10 4.5 0 5 SUPPLY VOLTAGE 5.5 -8 -4 0 4 8 12 INPUT POWER (dBm) 8-3 F or 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 apps@hittite.com HMC789ST89E v00.0409 InGaP HBT GAIN BLOCK MMIC AMPLIFIER, 0.7 - 2.8 GHz ACPR vs. Supply Voltage @ 880 MHz CDMA IS95, 9 Channels Forward -20 -30 -40 ACPR (dBc) -50 -60 -70 -80 -90 0 2 4 6 8 10 12 14 16 18 20 22 CHANNEL POWER (dBm) CDMA IS95 Frequency: 880 MHz Integration BW: 1.228 MHz Forward Link, 9 Channels 8 Amplifiers - Driver & GAin Block - smT 8-4 4.5V 5V 5.5V Source ACPR Broadband Gain & Return Loss @ 1900 MHz 20 Gain vs. Temperature @ 1900 MHz 16 10 RESPONSE (dB) GAIN (dB) 12 -10 S21 S11 S22 14 0 +25 C +85 C - 40 C -20 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 10 1.7 1.8 1.9 FREQUENCY (GHz) 2 2.1 FREQUENCY (GHz) Input Return Loss vs. Temperature @ 1900 MHz 0 Output Return Loss vs. Temperature @ 1900 MHz 0 RETURN LOSS (dB) +25 C +85 C - 40 C RETURN LOSS (dB) -4 -5 +25 C +85 C - 40 C -8 -10 -12 -15 -16 1.7 1.8 1.9 FREQUENCY (GHz) 2 2.1 -20 1.7 1.8 1.9 FREQUENCY (GHz) 2 2.1 F or 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 apps@hittite.com HMC789ST89E v00.0409 InGaP HBT GAIN BLOCK MMIC AMPLIFIER, 0.7 - 2.8 GHz Psat vs. Temperature @ 1900 MHz 30 29 28 27 26 25 24 1.7 +25 C +85 C - 40 C 8 Amplifiers - Driver & GAin Block - smT P1dB vs. Temperature @ 1900 MHz 28 27 26 25 24 23 22 1.7 +25 C +85 C - 40 C P1dB (dBm) 1.8 1.9 FREQUENCY (GHz) 2 2.1 Psat (dBm) 1.8 1.9 FREQUENCY (GHz) 2 2.1 Output IP3 vs. Temperature @ 1900 MHz 50 Output IP3 vs. Output Power @ 1900 MHz 50 45 IP3 (dB) IP3 (dB) 45 40 40 35 +25 C +85 C - 40 C 35 +25 C +85 C - 40 C 30 1.7 30 1.8 1.9 FREQUENCY (GHz) 2 2.1 0 2 4 6 8 10 12 14 16 18 SINGLE TONE POUT (dBm) Noise Figure vs. Temperature @ 1900 MHz 8 +25 C +85 C - 40 C Reverse Isolation vs. Temperature @ 1900 MHz -10 6 NF (dB) -15 ISOLATION (dB) +25 C +85 C - 40 C 4 -20 2 -25 0 1.7 1.8 1.9 FREQUENCY (GHz) 2 2.1 -30 1.7 1.8 1.9 FREQUENCY (GHz) 2 2.1 8-5 F or 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 apps@hittite.com HMC789ST89E v00.0409 InGaP HBT GAIN BLOCK MMIC AMPLIFIER, 0.7 - 2.8 GHz Power Compression @ 1900 MHz 50 Pout (dBm), GAIN (dB), PAE (%) Pout Gain PAE Gain, Power & IP3 vs. Supply Voltage @ 1900 MHz 50 GAIN (dB), P1dB (dBm), OIP3 (dBm) 40 Gain P1dB OIP3 40 8 Amplifiers - Driver & GAin Block - smT 8-6 30 30 20 20 10 10 4.5 0 5 SUPPLY VOLTAGE 5.5 -1 3 7 11 15 19 INPUT POWER (dBm) ACPR vs. Supply Voltage @ 1960 MHz CDMA 2000, 9 Channels Forward -20 -30 -40 ACPR (dBc) -50 -60 -70 -80 -90 1 3 5 7 9 11 13 15 17 19 21 CHANNEL POWER (dBm) Source ACPR CDMA 2000 Frequency: 1960 MHz Integration BW: 1.228 MHz Forward Link, 9 Channels ACPR vs. Supply Voltage @ 2140 MHz W-CDMA, 64 DPCH -20 -30 -40 -50 -60 -70 -80 0 2 4 6 8 10 12 14 16 18 20 CHANNEL POWER (dBm) Source ACPR W-CDMA Frequency: 2140 MHz Integration BW: 3.84 MHz 64 DPCH 4.5V 5V 5.5V ACPR (dBc) 4.5V 5V 5.5V Broadband Gain & Return Loss @ 2600 MHz 20 Gain vs. Temperature @ 2600 MHz 14 13 10 RESPONSE (dB) 12 0 S21 S11 S22 GAIN (dB) 11 10 -10 9 -20 2.2 8 2.3 +25 C +85 C - 40 C 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.4 2.5 2.6 2.7 2.8 FREQUENCY (GHz) FREQUENCY (GHz) F or 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 apps@hittite.com HMC789ST89E v00.0409 InGaP HBT GAIN BLOCK MMIC AMPLIFIER, 0.7 - 2.8 GHz Output Return Loss vs. Temperature @ 2600 MHz 0 8 Amplifiers - Driver & GAin Block - smT Input Return Loss vs. Temperature @ 2600 MHz 0 +25 C +85 C - 40 C -5 RETURN LOSS (dB) -10 RETURN LOSS (dB) -5 +25 C +85 C - 40 C -10 -15 -20 -15 -25 2.3 2.4 2.5 2.6 2.7 2.8 -20 2.3 2.4 2.5 2.6 2.7 2.8 FREQUENCY (GHz) FREQUENCY (GHz) P1dB vs. Temperature @ 2600 MHz 26 Psat vs. Temperature @ 2600 MHz 28 27 25 P1dB (dBm) Psat (dBm) 26 25 24 23 +25 C +85 C - 40 C +25 C +85 C - 40 C 24 23 22 2.3 22 2.3 2.4 2.5 2.6 2.7 2.8 2.4 2.5 2.6 2.7 2.8 FREQUENCY (GHz) FREQUENCY (GHz) Output IP3 vs. Temperature @ 2600 MHz 50 Output IP3 vs. Output Power @ 2600 MHz 50 45 IP3 (dB) IP3 (dB) 45 40 40 35 +25 C +85 C - 40 C 35 +25 C +85 C - 40 C 30 2.3 30 2.4 2.5 2.6 2.7 2.8 0 2 4 6 8 10 12 14 16 18 FREQUENCY (GHz) SINGLE TONE POUT (dBm) 8-7 F or 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 apps@hittite.com HMC789ST89E v00.0409 InGaP HBT GAIN BLOCK MMIC AMPLIFIER, 0.7 - 2.8 GHz Reverse Isolation vs. Temperature @ 2600 MHz -10 Noise Figure vs. Temperature @ 2600 MHz 8 +25 C +85 C - 40 C 8 Amplifiers - Driver & GAin Block - smT 8-8 6 NF (dB) ISOLATION (dB) -15 +25 C +85 C - 40 C 4 -20 2 0 2.3 2.4 2.5 2.6 2.7 2.8 -25 2.3 2.4 2.5 2.6 2.7 2.8 FREQUENCY (GHz) FREQUENCY (GHz) Gain, Power & IP3 vs. Supply Voltage @ 2600 MHz 50 GAIN (dB), P1dB (dBm), OIP3 (dBm) Power Compression @ 2600 MHz 40 Pout (dBm), GAIN (dB), PAE (%) 40 Gain P1dB OIP3 30 Pout Gain PAE 30 20 20 10 10 4.5 0 5 SUPPLY VOLTAGE 5.5 0 5 10 INPUT POWER (dBm) 15 20 F or 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 apps@hittite.com HMC789ST89E v00.0409 InGaP HBT GAIN BLOCK MMIC AMPLIFIER, 0.7 - 2.8 GHz 8 Amplifiers - Driver & GAin Block - smT Absolute Maximum Ratings collector Bias voltage (vcc) rf input power (rfin)(vs +5vdc) Junction Temperature continuous pdiss (T = 85 °c) (derate 13.0 mW/°c above 85 °c) Thermal resistance (junction to ground paddle) storage Temperature operating Temperature +6.0 v +18 dBm 150 °c 0.85 W 77 °c/W -65 to +150 °c -40 to +85 °c elecTrosTATic sensiTive Device oBserve HAnDlinG precAUTions Outline Drawing noTes: 1. pAckAGe BoDY mATeriAl: molDinG compoUnD mp-180s or eQUivAlenT. 2. leAD mATeriAl: cu w/ Ag spoT plATinG. 3. leAD plATinG: 100% mATTe Tin. 4. Dimensions Are in incHes [millimeTers] 5. Dimension Does noT inclUDe molDflAsH of 0.15mm per siDe. 6. Dimension Does noT inclUDe molDflAsH of 0.25mm per siDe. 7. All GroUnD leADs mUsT Be solDereD To pcB rf GroUnD. Package Information part number Hmc789sT89e package Body material roHs-compliant low stress injection molded plastic lead finish 100% matte sn msl rating msl1 [2] package marking [1] H789 XXXX [1] 4-Digit lot number XXXX [2] max peak reflow temperature of 260 °c 8-9 F or 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 apps@hittite.com HMC789ST89E v00.0409 InGaP HBT GAIN BLOCK MMIC AMPLIFIER, 0.7 - 2.8 GHz Pin Descriptions pin number function Description This pin is Dc coupled. off chip matching components are required. see Application circuit herein. interface schematic 8 Amplifiers - Driver & GAin Block - smT 8 - 10 1 rfin 3 rfoUT rf output and Dc Bias input for the amplifier. off chip matching components are required. see Application circuit herein. 2, 4 GnD These pins & package bottom must be connected to rf/Dc ground. F or 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 apps@hittite.com HMC789ST89E v00.0409 InGaP HBT GAIN BLOCK MMIC AMPLIFIER, 0.7 - 2.8 GHz 8 Amplifiers - Driver & GAin Block - smT 900 MHz Application Circuit This circuit was used to specify the performance for 810-960 mHz operation. contact the Hmc Applications Group for assistance in optimizing performance for your application. recommended component values c1 c2 c3 c4 c5 c6 c7 l1 l2 10 pf 100 pf 100 pf 1000 pf 2.2 μf 100 pf 1.2 pf 18 nH 3.8 nH 8 - 11 F or 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 apps@hittite.com HMC789ST89E v00.0409 InGaP HBT GAIN BLOCK MMIC AMPLIFIER, 0.7 - 2.8 GHz 900 MHz Evaluation PCB 8 Amplifiers - Driver & GAin Block - smT 8 - 12 List of Materials for 900 MHz Evaluation PCB 126222 item J1 - J2 J3 c1 c2 c3 c4 c5 c6 c7 l1 l2 U1 pcB [2] Description pcB mount smA connector 2 mm Dc Header 10 pf capacitor, 0402 pkg. 100 pf capacitor, 0402 pkg. 100 pf capacitor, 0402 pkg. 1000 pf capacitor, 0402 pkg. 2.2 µf capacitor, Tantalum 100 pf capacitor, 0402 pkg. 1.2 pf capacitor, 0402 pkg. 18 nH inductor, 0402 pkg. 3.8 nH inductor, 0402 pkg. Hmc789sT89e linear Amplifier 126220 evaluation pcB [1] The circuit board used in this 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 board should be mounted to an appropriate heat sink. The evaluation circuit board shown is available from Hittite upon request. [1] reference this number when ordering complete evaluation pcB [2] circuit Board material: rogers 4350 or Arlon 25 fr F or 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 apps@hittite.com HMC789ST89E v00.0409 InGaP HBT GAIN BLOCK MMIC AMPLIFIER, 0.7 - 2.8 GHz 8 Amplifiers - Driver & GAin Block - smT 1900 MHz Application Circuit This circuit was used to specify the performance for 1710-1990 mHz operation. contact the Hmc Applications Group for assistance in optimizing performance for your application. recommended component values c1 c2 c3 c4 c5 c6 c7 l1 r1 2.2 pf 5.0 pf 100 pf 1000 pf 2.2 µf 20 pf 1.1 pf 20 nH 0.0 ohm 8 - 13 F or 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 apps@hittite.com HMC789ST89E v00.0409 InGaP HBT GAIN BLOCK MMIC AMPLIFIER, 0.7 - 2.8 GHz 1900 MHz Evaluation PCB 8 Amplifiers - Driver & GAin Block - smT 8 - 14 List of Materials for 1900 MHz Evaluation PCB 126223 item J1 - J2 J3 c1 c2 c3 c4 c5 c6 c7 l1 r1 U1 pcB [2] Description pcB mount smA connector 2 mm Dc Header 2.2 pf capacitor, 0402 pkg. 5.0 pf capacitor, 0402 pkg. 100 pf capacitor, 0402 pkg. 1000 pf capacitor, 0402 pkg. 2.2 µf capacitor, Tantalum 20 pf capacitor, 0402 pkg. 1.1 pf capacitor, 0402 pkg. 18 nH inductor, 0402 pkg. 0.0 ohm resistor, 0402 pkg. Hmc789sT89e linear Amplifier 126220 evaluation pcB [1] The circuit board used in this 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 board should be mounted to an appropriate heat sink. The evaluation circuit board shown is available from Hittite upon request. [1] reference this number when ordering complete evaluation pcB [2] circuit Board material: rogers 4350 or Arlon 25fr F or 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 apps@hittite.com HMC789ST89E v00.0409 InGaP HBT GAIN BLOCK MMIC AMPLIFIER, 0.7 - 2.8 GHz 8 Amplifiers - Driver & GAin Block - smT 2600 MHz Application Circuit This circuit was used to specify the performance for 2420-2700 mHz operation. contact the Hmc Applications Group for assistance in optimizing performance for your application. recommended component values c1 c2 c3 c4 c5 c6 c7 l1 l2 r1 1.5 pf 1.5 pf 100 pf 1000 pf 2.2 µf 20 pf 0.3 pf 18 nH 12 nH 0.0 ohm 8 - 15 F or 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 apps@hittite.com HMC789ST89E v00.0409 InGaP HBT GAIN BLOCK MMIC AMPLIFIER, 0.7 - 2.8 GHz 2600 MHz Evaluation PCB 8 Amplifiers - Driver & GAin Block - smT 8 - 16 List of Materials for 2600 MHz Evaluation PCB 125682 item J1 - J2 J3 c1 c2 c3 c4 c5 c6 c7 l1 r1 U1 pcB [2] Description pcB mount smA connector 2 mm Dc Header 1.5 pf capacitor, 0402 pkg. 1.5 pf capacitor, 0402 pkg. 100 pf capacitor, 0402 pkg. 1000 pf capacitor, 0402 pkg. 2.2 µf capacitor, Tantalum 20 pf capacitor, 0402 pkg. 0.3 pf capacitor, 0402 pkg. 18 nH inductor, 0402 pkg. 0.0 ohm resistor, 0402 pkg. Hmc789sT89e linear Amplifier 125220 evaluation pcB [1] The circuit board used in this 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 board should be mounted to an appropriate heat sink. The evaluation circuit board shown is available from Hittite upon request. [1] reference this number when ordering complete evaluation pcB [2] circuit Board material: rogers 4350 or Arlon 25fr F or 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 apps@hittite.com