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Cellular 4G/LTE Channel / Industry News

Skyworks launches low-noise and high-linearity LNAs

January 31, 2012
KEYWORDS design
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Skyworks Solutions has introduced a set of low-noise and high-linearity low noise amplifiers (LNA) for 1.6 to 3.0 GHz receiver applications. The SKY67002-396LF, SKY67003-396LF and SKY67102-396LF are single-stage, GaAs PHEMT LNAs that offer ultra low noise figure, high linearity and excellent return loss in a small QFN package. On-die active bias design ensures consistent performance and enables unconditional stability. These LNAs are designed for wireless infrastructure OEMs who require high-performance, cost-effective solutions.

1.6 to 2.1 GHz High Linearity, Active Bias Low-Noise Amplifier

The SKY67002-396LF is GaAs, PHEMT low-noise amplifier with an active bias and high linearity performance. The advanced GaAs PHEMT enhancement mode process provides good return loss, low noise and high linearity performance.

The internal active bias circuitry provides stable performance over temperature and process variation. The device offers the ability to externally adjust supply current and gain. Supply voltage is applied to the RFOUT/VDD pin through an RF choke inductor. Pin 3 (VBIAS) should be connected to RFOUT/VDD through an external resistor to control the supply current. The RFIN and RFOUT/VDD pins should be DC blocked to ensure proper operation.

The SKY67002-396LF operates in the frequency range of 1.6 to 2.1 GHz. For lower and higher frequency operation, the pin-compatible SKY67001-396LF and SKY67003-396LF, respectively, should be used.

The LNA is manufactured in a compact, 2 x 2 mm, 8-pin Dual Flat No-Lead (DFN) package.

2.0 to 3.0 GHz High Linearity, Active Bias Low-Noise Amplifier

The SKY67003-396LF is GaAs, PHEMT low-noise amplifier with an active bias and high linearity performance. The advanced GaAs pHEMT enhancement mode process provides good return loss, low noise and high linearity performance.

The internal active bias circuitry provides stable performance over temperature and process variation. The device offers the ability to externally adjust supply current and gain. Supply voltage is applied to the RFOUT/VDD pin through an RF choke inductor. Pin 3 (VBIAS) should be connected to RFOUT/VDD through an external resistor to control the supply current. The RFIN and RFOUT/VDD pins should be DC blocked to ensure proper operation.

The SKY67003-396LF operates in the frequency range of 2.2 to 3.0 GHz. For lower frequency operation, the pin-compatible SKY67002-396LF or SKY67001-396LF should be used.

The LNA is manufactured in a compact, 2 x 2 mm, 8-pin Dual Flat No-Lead (DFN) package.

Samples are available, and pricing depends on quantities.

Source: Skyworks Solutions

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