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12 - 1 For 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 12 HMC708LP5 / 708LP5E v03.0409 Functional Diagram Typical Applications Features General Description 0.5 dB LSB 6-BIT DIGITAL VARIABLE GAIN AMPLIFIER, 1700 - 2200 MHz the HmC708lp5(e) is ideal for: • Cellular infrastructure • Wibro, WimaX and lte/ 4g • microwave radio & Vsat • test equipment and sensors -2.5 to +29 db gain Control in 0.5 db steps power-up state selection High Output ip3: +37 dbm low noise figure: 1 db ttl/CmOs Compatible serial, parallel, or latched parallel Control ±0.25 db typical step error single +3V and +5V supply 32 lead 5x5mm smt package: 25mm2 the HmC708lp5(e) is a digitally controlled variable gain amplifier which operates from 1700 mHz and 2200 gHz, and can be programmed to provide between 2.5 db attenuation and +29 db of gain, in 0.5 db steps. the HmC708lp5(e) delivers noise figure of 1 db in its maximum gain state, with output ip3 of up to +37 dbm. the dual mode gain control interface accepts either three wire serial input or 6 bit parallel word. the HmC708lp5(e) also features a user selectable power up state and a serial output for cascading other Hittite serially controlled components. for 900 mHz applications please refer to the HmC707lp5(e) data sheet. Electrical Specifications, T A = +25° C Rbias = 270 Ohms for Vdd = +5V, Rbias = 10 kOhms for Vdd = +3V, Vdd = Vdd1 = Vdd2 = Vdd3 parameter min. typ. max. min. typ. max. Units Vdd = +3V Vdd = +5V frequency range 1.7 - 2.2 1.7 - 2.2 gHz gain (maximum gain state) 23 27 25 30 db gain Control range 31.5 31.5 db input return loss 16.5 20.5 db Output return loss 10.5 13.5 db attenuation accuracy: (referenced to maximum gain state) ±(0.3 + 8%) of attenuation setting ±(0.2 + 5%) of attenuation setting db Output power for 1 db Compression 13 16 18 21.5 dbm Output third Order intercept point (two-tone input power= -10 dbm each tone) 32.5 37.5 dbm noise figure 1.1 1 db switching Characteristics trise, tfall (50% Ctl to 90% rf) trise tfall - - 140 270 ns ns Current amplifier 1 30 47 65 80 97 135 ma Current amplifier 2 130 155 190 130 155 190 ma [1] two-tone output power @ -10 dbm [2] two-tone output power @ -5 dbm |
