ADAR4002ACPZ

ADAR4002ACPZ is a low power broadband, bidirectional, single channel, true time delay unit (TDU) and a digital step attenuator (DSA). The IC has 18.5GHz of bandwidth over a frequency range of 0.5GHz to 19GHz with 50 ohm input impedance at both RF ports. The TDU has two programmable maximum time delays, each with 7-bit control. Range 0 has a maximum delay of 508ps with a resolution of 4ps (typical). This range is used at lower frequencies where the ADAR4002 has less insertion loss and where more time delay is required for full 360° phase coverage. Range 1 has a maximum delay of 254ps and a resolution of 2ps (typical). This range has less insertion loss compared to Range 0 and is useful at higher frequencies where the ADAR4002 has higher insertion loss, and where less time delay and smaller resolution are required. The DSA has 6-bit resolution with an attenuation range of 0dB to 31.5dB and a step size of 0.5dB.

• Programmable 7-bit time delay
• Programmable 6-bit attenuation 31.5dB adjustment range with 0.5dB resolution
• Performance at 10GHz for minimum time delay and attenuation
• Fully programmable via a 3-wire or 4-wire SPI
• 14-bit shift register for daisy chaining and quick data load
• Power consumption of 1mW with 1.2V and 1.0V dual supplies
• Flexible digital control via SPI or shift register; supports daisy chaining
• Contains register memory for 32 TDU and DSA states
• Available in 14-lead LFCSP (2 mm x 3 mm x 0.75 mm with an EP) package
• Temperature range from -40°C to +85°C