SKY12408-321LF

50-600 MHz, 6 dB 100 Ω Differential Digital Attenuator

The SKY12408-321LF is a GaAs pHEMT two-bit attenuator I/C. The device is provided in a 3 x 3 mm 12-pin Quad Flat No-Lead (QFN) package.

The SKY12408-321LF is particularly suited for 100 Ω differential systems for which high attenuation accuracy, low insertion loss, and low intermodulation products are required.

The attenuator’s differential input and output impedance is 100 Ω. The device is controlled by two positive DC voltage control pins. The differential attenuator paths are controlled together and can be in either an insertion loss or a 6 dB attenuation state. In a differential system, the attenuator presents a 100 Ω impedance, but can be used as two single-ended attenuators, each with a 50 Ω impedance.

Please note: SKY12408-321LF is being discontinued and is not recommended for new designs.

Product Documents

Data Sheets
SKY12408-321LF: 50-600 MHz, 6 dB 100 Ω Differential Digital Attenuator

Features

Dual, positive voltage operation: 0/1.8-5.0 V
High bit accuracy: ±0.3 dB @ 200 MHz
Low insertion loss: 0.3 dB @ 200 MHz
Absorptive in 100 Ω differential systems
Small, QFN (12-pin, 3 x 3 mm) package (MSL1, 260 °C per JEDEC J-STD-020)

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Specifications

- Control Bits/ Interface Parallel/Serial
- 2/P
- Frequency (GHz) Min.
- 0.05
- Frequency (GHz) Max.
- 0.6
- LSB Attenuation (dB)
- 6
- Attenuation Range (dB)
- 6
- Typ. IL (dB)
- 0.3
- Typ. IIP3 (dBm)
- 49
- Typ. IP_{1 dB} (dBm)
- 34
- Package
- QFN, 12L
- Package (mm)
- 3 x 3 x 0.75

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