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MAX2267 - Cellular-Band Linear Power Amplifiers

Description

The MAX2267/MAX2268/MAX2269 power amplifiers are optimized for IS-98-based CDMA and PDC cellular telephones operating in the Japanese cellular-frequency band.

Features

  • o Low Average CDMA Current Consumption in Typical Urban Scenario 55mA (MAX2267) 90mA (MAX2268) 50mA (MAX2269) o 0.5µA Shutdown Mode Eliminates External Supply Switch o ±0.8dB Gain Variation Over Temperature o No External Reference or Logic Interface Circuitry Needed o Supply Current and ACPR Margin Dynamically Adjustable o +2.7V to +4.5V Single-Supply Operation o 35% Efficiency at +2.7V Operation Ordering Information PART TEMP. RANGE.

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Full PDF Text Transcription

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19-1567; Rev 1; 2/01 EVAALVUAAILTAIOBNLEKIT +2.7V, Single-Supply, Cellular-Band Linear Power Amplifiers MAX2267/MAX2268/MAX2269 General Description The MAX2267/MAX2268/MAX2269 power amplifiers are optimized for IS-98-based CDMA and PDC cellular telephones operating in the Japanese cellular-frequency band. When matched for CDMA operation, the amplifiers achieve 27dBm output power with 35% efficiency (MAX2268), with margin over the adjacent and alternate channel specification. At a +17dBm output—a very common power level for CDMA phones—the MAX2268 still has 7% efficiency, yielding excellent overall talk time. At the same power level, the MAX2267/MAX2269 have an unprecedented 12%/17% efficiency, while still obtaining 28%/29% efficiency at maximum output power.
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