DATA SHEET SKY12343-364LF: 0.01 to 4.0 GHz Seven-Bit Digital Attenuator with Serial and Parallel Drivers V1 V2 V3 V4 V5 Applications V6 V7 P/S VDD Cellular and 3G infrastructure CLOCK A2 Serial or Parallel Driver DATA IN A1 WiMAX, LTE, 4G infrastructure LATCH ENABLE A0 RF1 RF2 Features 16 dB 0.25 dB 0.5 dB 1 dB 2 dB 4 dB 8 dB S2122 Broadband operation: 0.01 to 4.0 GHz Figure 1. SKY12343-364LF Block Diagram Attenuation range: 31.75 dB with 0.25 dB LSB TTL/CMOS-compatible serial, parallel, or latched parallel control interface Description Single supply voltage: +3.3 or +5 V The SKY12343-364LF is a GaAs broadband seven-bit pHEMT digital attenuator with a 0.25 dB least significant bit (LSB). The Small QFN (32-pin, 5 x 5 mm) Pb-free package programming logic levels are TTL/CMOS-compatible with both a (MSL1, 260 C per JEDEC J-STD-020) dual mode serial controller and an integrated Serial Peripheral Interface (SPI) controller. TM The SKY12343-364LF attenuator features low insertion loss, Skyworks Green products are compliant with excellent attenuation accuracy, a 31.75 dB attenuation range, and all applicable legislation and are halogen-free. high-linearity performance. The device is an ideal choice for a For additional information, refer to Skyworks TM wide variety of 3G and 4G cellular infrastructure applications. Denition of Green , document number SQ040074. A functional block diagram is shown in Figure 1. The pin configuration and package are shown in Figure 2. Signal pin assignments and functional pin descriptions are provided in Table 1. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 201355D Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice July 8, 2019 1 DATA SHEET SKY12343-364LF: SEVEN-BIT DIGITAL ATTENUATOR 32 31 30 29 28 27 26 25 1 24 CLOCK N/C 2 23 LATCH ENABLE VDD 3 22 A1 P/S 4 21 A2 A0 N/C N/C 5 20 6 19 N/C N/C RF1 RF2 7 18 N/C N/C 8 17 9 10 11 12 13 14 15 16 S2123 Figure 2. SKY12343-364LF Pinout (Top View) Table 1. SKY12343-364LF Signal Descriptions Pin Name Description Pin Name Description 1 1 1 N/C No connection 17 N/C No connection 2 VDD DC power supply 18 RF2 RF input/output to digital attenuator Serial or parallel operation select. 1 3 P/S 19 N/C No connection Logic low enables parallel mode. 1 4 A0 Address bit A0 20 N/C No connection 1 5 N/C No connection 21 A2 Address bit A2 6 N/C No connection (Note 1) 22 A1 Address bit A1 On rising edge of pulse, shifts the most recent clocked- in data and address bits to set the attenuation state. In parallel mode, if this signal is logic high, changes to the 7 RF1 RF input/output to digital attenuator 23 LATCH ENABLE V1 through V7 signals occur directly. If this signal is logic low, the attenuator does not change states until this signal is raised. 1 8 N/C No connection 24 CLOCK Clock input 1 9 N/C No connection 25 DATA IN Serial data input 1 10 N/C No connection 26 V1 Parallel attenuation control input 1 11 N/C No connection 27 V2 Parallel attenuation control input 1 12 N/C No connection 28 V3 Parallel attenuation control input 1 13 N/C No connection 29 V4 Parallel attenuation control input 1 14 N/C No connection 30 V5 Parallel attenuation control input 1 15 N/C No connection 31 V6 Parallel attenuation control input 1 16 N/C No connection 32 V7 Parallel attenuation control input 1 May be connected to ground with no change in performance. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 July 8, 2019 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice 201355D N/C V7 N/C V6 N/C V5 N/C V4 N/C V3 N/C V2 V1 N/C DATA IN N/C