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F1978 Datasheet

Part Number F1978
Manufacturers IDT
Logo IDT
Description Digital Step Attenuator
Datasheet F1978 DatasheetF1978 Datasheet (PDF)

6-Bit, 75Ω Digital Step Attenuator 5MHz to 3GHz F1978 Datasheet Description 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 compact 4mm  4mm, 20-pin Thin QFN package with a 75Ω impedance for ease of integration. The F1978 DSA has RF performance identical to the F1975 Digital Step Attenuator. .

  F1978   F1978






Part Number F1978
Manufacturers Renesas
Logo Renesas
Description Digital Step Attenuator
Datasheet F1978 DatasheetF1978 Datasheet (PDF)

6-Bit, 75Ω Digital Step Attenuator 5MHz to 3GHz F1978 Datasheet Description 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 compact 4mm  4mm, 20-pin Thin QFN package with a 75Ω impedance for ease of integration. The F1978 DSA has RF performance identical to the F1975 Digital Step Attenuator. .

  F1978   F1978







Digital Step Attenuator

6-Bit, 75Ω Digital Step Attenuator 5MHz to 3GHz F1978 Datasheet Description 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 compact 4mm  4mm, 20-pin Thin QFN package with a 75Ω impedance for ease of integration. The F1978 DSA has RF performance identical to the F1975 Digital Step Attenuator. The difference between the F1978 and F1975 is that the F1978 has an additional programming mode called Direct Serial Programming. Consult the “Programming” section of this datasheet or the application note AN-945 “Comparison of F1975 and F1978 Digital Step Attenuator Serial Programming Methods.” Advantages Digital step attenuators are used in receivers and transmitters to provide gain control. The F1978 is a 6-bit step attenuator optimized for these demanding applications. The sil.


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