SC2200 Wideband Performance results with
NXP A2I25D025N at 2.6GHz
With and without RF delay
PA Information and Test Conditions
| Maxim Integrated1
• PA information
> NXP A2I25D025N, Doherty, LDMOS
> Operating Frequency: 2100-2900 MHz, Frequency tested: 2660 MHz
> Gain = ~29dB; Psat = P3dB= ~ 45dBm; Vdd=28V
> NXP Driver used for testing: MMG20241H. Very good linearity’s of the
drivers are critical for wideband performance
• Test conditions
> Target performance: ACLR1 = -50dBc
> Compare performance with delay and without delay
• Delay: SC2200-EVK2400 EVK, Anaren XDL15-3-030S 3nsec delay. RF delay has
5dB insertion loss at 2660MHz
• No delay: modified SC2200-EVK2400 EVK, replaced delay by 4dB attenuation
to maintain the same attenuation at 2.6GHz between RFIN and RFOUT
> All data collected in ”Smooth Mode” with calibration 0.5 to 1dB above the
targeted maximum PA output power. This was critical to achieve optimum
performance.
> RFIN, RFFB and RFOUT Peak Power within datasheet recommendations.