Status
All versions are No Longer Available. See Ordering Information for recommended replacements.
Description
The MAX2251 low-voltage linear power amplifier (PA) is designed for TDMA/AMPS dual-mode phone applications. The device is packaged in an ultra-compact (2.06mm x 2.06mm) chip-scale package (CSP), and delivers over +30dBm of linear power in TDMA operation. An on-chip shutdown feature reduces operating current to 1µA (typ), eliminating the need for an external supply switch.
The MAX2251 does not need an external reference voltage, and requires only a few external matching components and no bias circuitry. Another feature of this device is the use of external bias resistors, eliminating wasted "safety-margin" current. This feature also allows current throttleback at lower output power levels, thereby maintaining the highest possible efficiency at all power levels.
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