Product Details
- Serial and 7-bit parallel interface
- 31.75dB range
- 0.25dB steps
- Glitch-Free™: Low transient overshoot
- 500ns settling time for 0.25dB steps
- Ultra-linear > 63dBm IIP3
- Low insertion loss < 1.7dB at 4GHz
- Attenuation error < ±0.2dB at 4GHz
- Bidirectional RF use
- 3.3V or 5V supply
- -40 °C to +105 °C operating temperature
- 4mm × 4mm 24-VFQFPN package
The F1958 is part of Renesas' Glitch-Free™ family of digital step attenuators (DSAs) optimized for the demanding requirements of base station (BTS) radio cards and numerous other applications. This device is offered in a compact 4mm × 4mm 24-VFQFPN package with 50Ω input and output impedance for ease of integration into the radio or RF system. The F1958 offers very high reliability due to its construction from a monolithic silicon die and has very low insertion loss with minimal distortion. Additionally, the device is designed to have extremely accurate attenuation levels. These accurate attenuation levels improve system SNR and/or ACLR by ensuring system gain is as close to the targeted level as possible. In addition, the very fast settling time in parallel mode is ideal for fast switching systems. Finally, the device uses our Glitch-Free™ technology in contrast to competing DSAs.
- 3G/4G/4G+ Base Station Systems
- Distributed Antenna Systems, DAS
- Remote Radio Heads
- Active Antenna Systems, AAS Broadband Satellite Equipment
- NFC Infrastructure
- Military Communication Equipment
Design & Development (Boards and Kit)
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Evaluation Board for F1958 7-bit Digital Step Attenuator
The F1958EVB is a fully populated evaluation board which allows the customer to easily evaluate the digital step attenuator. Attenuation may be set using either the F1958's parallel control input or its serial control input. A dip switch on the evaluation board allows one to set the attenuation state without off-board connections to the control inputs.
The F1958EVS is a complete hardware and software solution that allows customers to digitally control the F1958EVB with a computer. The solution includes the F1958EVB board, a USB Digital Control Board and interface cables. The software, guides, and instructional videos are available for download/viewing on this page.
Part Numbers (2)
F1958NBGK
F1958NBGK8
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