Evaluation Kit For Low Noise Amplifier With Bypass Switch

The MC13850 is a cost-effective, high IP3 low-noise amplifier (LNA) with low noise figure. This is the leadless package version of the popular MBC13720 device. As with the MBC13720, this device is designed for general purpose RF applications, yet has excellent high frequency gain and noise figure. An integrated bypass switch is included to preserve high input intercept performance. The input and output match are external to allow maximum design flexibility. The LNA has two selectable IP3 modes, a bypass mode and a standby mode. The MC13850 is fabricated with an advanced RF BiCMOS process using the SiGe:C module and is packaged in the MLPD-8 leadless package.

RF input frequency = 400 to 2500 MHz

Gain: 21 dB at 470 MHz, 14.5 dB and 1960 MHz and 12 dB at 2.4 GHz in high IP3 mode

Input third order intercept point (IIP3): 10 dBm at 1960 MHz, 13 dBm at 2.4 GHz and -2.5 dBm at 860 MHz in high IP3 mode

Noise figure (NF): 1.6 dB at 860 MHz, 1.4 dB at 1960 MHz and 1.55 dB at 2400 MHz in low IP3 mode

Output 1 dB compression point (P1dB): 9 dBm at 470 MHz and 11.5 dBm at 1960 MHz in high IP3 mode

Selectable IP3 mode allows for running at the desired IP3 performance for a receiver"s linearity requirements

Bypass mode has return losses comparable to active mode for use in systems with filters and duplexers

Bypass mode improves dynamic range in variable signal strength environments

Integrated logic-controlled standby mode with current drain < 1 µA

Total supply current: 5 mA at 2.7V in low IP3 mode and 10 mA in high IP3 mode. <10 µA in bypass mode

In a receiver system with 20% active mode and 80% bypass mode, the average current drain is 1 mA

On-chip bias sets the bias point

Bias stabilized for device and temperature variations

MLPD-8 leadless package with low parasitics

470–860, 900, 1900 and 2400 MHz application circuit evaluation boards with characterization data are available

Available in tape and reel packaging