Datasheet HMC-AUH249 (Analog Devices) - 7

HMC-AUH249
v04.0909
GaAs HEMT MMIC MODULATOR DRIVER AMPLIFIER, DC - 35 GHz Device Mounting
• 1 mil diameter wire bonds are used on vgg1 and vgg2 connections to the capacitors and 27Ω resistors. • 0.5mil x 3mil ribbon bonds are used on rF connections • capacitors and resistors on vgg1 and vgg2 are used to filter low frequency, <800Mhz, rF pickup • 35Ω and 50Ω resistors are fabricated on a 5mil alumina substrate and should be suitable for use as a high frequency termination. 4 • For best gain flatness and group delay variation, eccosorb can be epoxied on the transmission line covering the center 3/4 of the transmission line length. eccosorb may also be placed partial y across the res1 pad and 35Ω resistor for improved gain flatness and group delay variation. (The insertion of the transmission line helps reduce low frequency, <10GHz, gain ripple) ip • silver-fil ed conductive epoxy is used for die attachment h (Backside of the die should be grounded and the GND pads are connected to the backside metal through Vias) c s - r
Device Operation
e these devices are susceptible to damage from electrostatic discharge. proper precautions should be observed iv during handling, assembly and test. r the input to this device should be ac-coupled. d
Device Power Up Instructions
r O 1. Ground the device 2. Bring vgg1 to -0.5v (no vbias current) lat 3. Bring vgg2 to +1.5v (no vbias current) u 4. Bring vdd to +5v (150ma to 225ma drain current) d (Initially the drain current (Vbias) will rise sharply with a small Vbias voltage, but will flatten out as Vbias approaches 5V) O • vgg1 should be varied between -1.0v and 0v to achieve 200ma current on the drain (vbias). • vbias may be increased to +5.5v if required to achieve greater output voltage swing. • vgg2 may be adjusted between +1.5v and +0.3v to vary the output voltage swing. l & M a
Device Power Down Instructions
ic 1. reverse the sequence identified above in steps 1 through 4. t p O Infor F m o ati ro p n f ruirc n e ish ,e d d e b l y iv Anealroyg a D n evidc ets oi s pblealic ev e e d otr o d b e e ras cc: urH at it e taitne d M relia ic bler. ow Ho a we vve er , C n o o For price, delivery, and to place orders: Analog Devices, Inc., responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rporation, 20 Alpha Road, Chelmsford, MA 01824 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
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Phone: 978-250-3343 Fax: 978-250-3373 rights of third parties that may result from its use. Specifications subject to change without notice. No O Ph rod n e e r : 7On 81- - 3 li 2 n 9-e 4 a 70t ww 0 • O w rd . e hi r ott nliite n .c e a o t m license is granted by implication or otherwise under any patent or patent rights of Analog Devices. www.analog.com Application Support: Pho Trademarks and registered trademarks are the property of their respective owners. ne: 978-250-33 A 4 p 3 pli co atri o ap n S p ups@ por h t it : Ptit hoen.c e o : 1 m -800-ANALOG-D