AM55-0027 UMTS Digital Gain Control Amplifier, 1.94 - 2.34 GHz Features V 1E.00 Advanced Block Diagram n Digitally Controlled Gain Block n Parallel Control Interface n 4mm FQFP-N Package n Single Positive Supply Voltage n 0.25 dB Steps of Attenuation n 10 dB Atttenuation Range IN 10 dB Range in 0.25 dB Steps 8 dB Gain Description 8 dB Gain 9 dB Gain OUT Parallel Control Interface M/A-COM’s AM55-0027 is a digitally controlled Variable Gain Amplifier. Attenuation range is 10 dB with Attenuation Steps of 0.25 dB. Attenuation is controlled digitally through a parallel interface. 4mm FQFP-N Package Style Electrical Specifications: TA = 25°C, Z0 = 50Ω, VS = 5V Parameter Conditions Frequency Units Min. Typ. Max. Gain No Attenuation 1.94 - 2.34 GHz dB 24 26 — Attenuation Range — 1.94 - 2.34 GHz dB 10 10 — Attenuation Step Size — 1.94 - 2.34 GHz dB 0.2 0.25 0.3 Amplitude Flatness — All attenuation states 1.94 - 2.34 GHz 2.09 - 2.19 GHz dB dB — — — — ± 0.3 ± 0.1 Input Return Loss — 1.94 - 2.34 GHz dB 13 18 — Output Return Loss — 1.94 - 2.34 GHz dB 10 14 — Output P1 dB 0 dB attenuation 1.94 - 2.34 GHz dBm 15 19 — Output IP3 0 dB attenuation 1.94 - 2.34 GHz dBm 30 31 — Noise Figure 0 dB attenuation 1.94 - 2.34 GHz dB — 4.7 — Noise Figure 10 dB attenuation 1.94 - 2.34 GHz dB — 9.0 — Supply Current — — mA — 110 120 UMTS Digital Gain Control Amplifier, 1.94 - 2.34 GHz AM55-0027 V 1E.00 Pin Out Table Pin Out Figure Pin #20 Control Pin 5V 0V Attenuation State Vcc6 0.25 dB Vcc1 0.5 dB Vcc2 1 dB Vcc3 Vcc3N 2 dB Vcc4 Vcc4N 4 dB Vcc5 Vcc5N 8 dB N/C VDD2 VDD3 RF OUT N/C Pin #1 VCC1 N/C VCC3N VCC3 VDD VCC5 VCC5N *All Vdd pins = 5V Example: To get 7.5 dB Attenuation Vcc4 = 5V, Vcc4N = 0V, Vcc3 = 5V, Vcc3N = 0V, Vcc2 = 5V and Vcc1 = 5V Note: In this case Vcc5 = 0V therefore Vcc5N is 5V, and Vcc6 = 0 VCC2 VCC4N VCC4 VCC6 Typical Performance Curves Gain vs. Frequency VDD1 N/C RF IN N/C Input Return Loss vs. Frequency 27 -10 25 -15 S11 (dB) S21 (dB) 23 21 -20 -25 19 -30 17 15 -35 1.94 2.04 2.14 2.24 2.34 1.94 2.04 Frequency (GHz) 2.14 2.24 2.34 Frequency (GHz) Output Return Loss vs. Frequency Ordering Information -10 Part Number Package AM55-0027 Bulk Packaging AM55-0027TR Tape and Reel (1K Reel) AM55-0027-TB Units Mounted on Test Board -12 S22 (dB) -14 -16 -18 -20 -22 -24 1.94 2.04 2.14 2.24 2.34 Frequency (GHz) Specifications subject to change without notice. n North America: Tel. (800) 366-2266 n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 Visit www.macom.com for additional data sheets and product information. 2