F1978 Overview
The F1978 Digital Step Attenuator (DSA) is a product in IDT’s Glitch-FreeTM DSA Family, which is optimized for the demanding requirements of CATV and satellite systems. It operates in the frequency range of 5MHz to 3000MHz. This device is offered in a pact 4mm 4mm, 20-pin Thin QFN package with a 75Ω impedance for ease of integration.
F1978 Key Features
- Frequency: 5MHz to 3000MHz
- Serial and 6-bit parallel interface
- 31.5dB control range
- 0.5dB step
- Glitch-FreeTM technology, low transient overshoot
- 3.0V to 5.25V supply
- 1.8V or 3.3V control logic
- Attenuator step error: 0.1dB at 1GHz
- Low insertion loss: 1.2dB at 1GHz
- Ultra-linear IIP3: +64dBm
