DATA SHEET SKY12322-86LF: 0.5 to 4.0 GHz Five-Bit Digital Attenuator (0.5 dB LSB) Applications Transceiver transmit automatic level control or receive J1 automatic gain control in GSM, CDMA, WCDMA, WLAN, Bluetooth , or ZigBee land mobile radio base stations or terminal equipment General-purpose signal attenuation in telecommunications and instrumentation applications V1 0.5 dB Features 1 dB V2 Broadband operation: 0.5 to 4.0 GHz Positive voltage operation: 2.7 to 5.5 V Low current consumption: <100 A 3 V 2 dB LSB attenuation: 0.5 dB V3 Attenuation range: 15.5 dB High IIP3: +45 dBm Low insertion loss: 1.2 dB 900 MHz 4 dB V4 Small MSOP-10 (10-pin, 3 x 3 mm) package (MSL1, 260 C per JEDEC J-STD-020) 8 dB V5 TM Skyworks Green products are compliant with all applicable legislation and are halogen-free. S2379 For additional information, refer to Skyworks J2 TM Denition of Green , document number Figure 1. SKY12322-86LF Block Diagram SQ040074. Description The SKY12322-86LF is comprised of five cascaded fixed The SKY12322-86LF is a monolithic, GaAs binary-weighted attenuators, each of which has a shunt bypass switch. Beginning five-bit single positive control voltage digital attenuator. The at the 0.5 dB LSB, each succeeding fixed attenuator produces device operates from 0.5 to 4.0 GHz. DC power consumption is twice the attenuation of the preceding stage. very low, typically 100 A maximum, with a control and supply The state of each bypass switch is controlled by the logic level voltage of 3 V. voltage applied to the associated control voltage input. A logic The SKY12322-86LF has an LSB of 0.5 dB and total attenuation of high voltage closes the associated switch, which bypasses that 15.5 dB. The two RF ports are bilateral each can be used as the fixed attenuator stage a logic low opens the switch to force the RF input or the RF output. An external supply voltage of 2.7 to input signal to that stage through the associated attenuator. 5.5 V is required. 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 200218E Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice April 30, 2018April 30, 2018April 30, 2018 1 DISCONTINUEDDATA SHEET SKY12322-86LF: 5-BIT DIGITAL ATTENUATOR 1 10 V1 J1 2 9 V2 GND 3 8 V3 GND 4 7 V4 GND 5 6 V5 J2 S2381 Figure 2. SKY12322-86LF Pinout (Top View) Table 1. SKY12322-86LF Signal Descriptions Pin Name Description Pin Name Description High impedance control voltage input for 1 V1 6 J2 RF input or output port, supply voltage input 0.5 dB weighted bit (LSB) High impedance control voltage input for 2 V2 7 GND Ground 1 dB weighted bit High impedance control voltage input for 3 V3 8 GND Ground 2 dB weighted bit High impedance control voltage input for 4 V4 9 GND Ground 4 dB weighted bit High impedance control voltage input for 5 V5 10 J1 RF input or output port 8 dB weighted bit (MSB) Electrical and Mechanical Specifications The absolute maximum ratings of the SKY12322-86LF are The state of the SKY12322-86LF is determined by the logic provided in Table 2. Electrical specifications are provided in provided in Table 4. Table 3. Typical performance characteristics of the SKY12322-86LF are illustrated in Figures 3 through 6. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 April 30, 2018 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice 200218E DISCONTINUED