MAX2232/MAX2233 19-1470 Rev 1 6/00 900MHz ISM-Band, 250mW Power Amplifiers with Analog or Digital Gain Control General Description Features The MAX2232/MAX2233 low-voltage, silicon RF power 800MHz to 1000MHz Frequency Range amplifiers (PAs) are designed for use in the 900MHz 250mW (+24dBm) Output Power at 915MHz from ISM band. They operate from a single +2.7V to +5.5V +3.6V Supply supply, allowing them to be powered directly from a 3- cell NiCd or a 1-cell Lithium-Ion battery. The devices +2.7V to +5.5V Single-Supply Operation typically deliver 250mW (+24dBm) of output power at 44% Power-Added Efficiency 915MHz from a single +3.6V supply, or 150mW (+22dBm) from a single +2.7V supply. At +24dBm out- 24dB Power Gain put power, power-added efficiency (PAE) is 44%. 24dB Analog Gain-Control Range (MAX2232) The MAX2232/MAX2233 provide 24dB of gain, which is adjustable over a continuous 24dB span via the analog Three Levels of Digitally Programmed Power Gain gain-control pin of the MAX2232 or in two 10dB steps in 10dB Steps (MAX2233) via the 2-bit programmable gain-control DAC of the Programmable RF Power Envelope Ramping MAX2233. An external capacitor sets the RF output (MAX2232) power envelope ramp time, reducing spurious emis- sions during power-up and power-down by providing a Thermal Shutdown gradual change in output power (MAX2232). Programmable Thermal Shutdown Timeout Period The MAX2232/MAX2233 feature a low-power shutdown 0.2A Low-Power Shutdown Mode mode, which typically draws less than 1A of supply current, saving power during idle slots in time-division Low VWSR in Standby and Shutdown Modes multiple-access (TDMA) systems. The VSWR of the RF input in shutdown mode relative to normal operation is 1.2:1. The devices also feature a thermal shutdown Ordering Information function, enabling the PA to protect itself from excessive temperature conditions that could damage the IC. A PART TEMP. RANGE PIN-PACKAGE capacitor to ground limits thermal cycling by setting a MAX2232EEE -40C to +85C 16 PQSOP thermal shutdown timeout period. MAX2233EEE -40C to +85C 16 PQSOP The MAX2232/MAX2233 are available in a space-sav- ing, thermally enhanced 16-pin power-QSOP (PQSOP) package. Pin Configuration Applications 900MHz ISM Band TOP VIEW Digital Cordless Phones RFIN 1 16 V CC Wireless Data GND 2 15 GND FM Analog Transmitters SHDN (D1) 3 14 RAMP+ (N.C.) 868MHz European ISM Band CTRL (D0) 4 MAX2232 13 RAMP- (N.C.) MAX2233 GND 5 12 V CC GND 6 11 V CC GND 7 10 TSET RFOUT 8 9 N.C. Functional Diagrams appear at end of data sheet. PQSOP GROUND OF OUTPUT STAGE CONNECTED TO PACKAGE SLUG. ( ) ARE FOR MAX2233. Maxim Integrated Products 1 For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.900MHz ISM-Band, 250mW Power Amplifiers with Analog or Digital Gain Control ABSOLUTE MAXIMUM RATINGS V to GND...........................................................-0.3V to +6.5V Continuous Power Dissipation (T = +70C) CC A SHDN, CTRL, D0, D1 to GND ....................-0.3V to (V +0.3V) 16-Pin PQSOP (derate 80mW/C above +70C) ................3W CC I ....................................................................................10mA Operating Temperature Range ...........................-40C to +85C RFIN RFIN Power (50 AC-coupled source)........................+10dBm Storage Temperature Range .............................-65C to +150C Output Load VSWR...............................................................6:1 Lead Temperature (soldering, 10s) .................................+300C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. DC ELECTRICAL CHARACTERISTICS (V = +2.7V to +5.5V, V = +2.2V, V = V = V = +2V, T = -40C to +85C. No input signal applied, unless otherwise D0 D1 CC CTRL SHDN A noted. Typical values are at V = +3.6V and T = +25C.) CC A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage Range V 2.7 5.5 V CC V 3.6V 0.2 10 CC V = 0.6V, SHDN Shutdown Supply Current I A CC V = V = 0.6V D0 D1 V = 5.5V 120 CC Standby Supply Current I V 0.4V (MAX2232) 20.3 25 mA CC CTRL Logic Input High V SHDN (MAX2232), D0, D1 (MAX2233) 2.0 V IH Logic Input Low V SHDN (MAX2232), D0, D1 (MAX2233) 0.6 V IL CTRL Input for Standby Mode V MAX2232 0.4 V CTRL CTRL Input for Gain-Control V MAX2232 0.6 V CTRL Mode V = 2.0V (MAX2232), SHDN I -1 10 IH V = V = 2.0V (MAX2233) D0 D1 Logic Input Current A V = GND (MAX2232), SHDN I -1 1 IL V = V = GND (MAX2233) D0 D1 V = GND -1.5 1 CTRL CTRL Input Current A V = 2.2V 1.5 CTRL AC ELECTRICAL CHARACTERISTICS (MAX2232/MAX2233 Evaluation Kit, V = +3.6V, V = +2.2V, SHDN = V (MAX2232), D0 = D1 = V (MAX2233), CC CTRL CC CC P = 0dBm, = 915MHz, T = +25C, unless otherwise noted.) RFIN RFIN A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Frequency Range (Notes 1, 2) 902 928 MHz IN Power Gain G 23.9 dB P V = 4.8V 25.4 CC V = 3.6V (Note 1) 22.9 23.9 24.9 CC Output Power P dBm OUT V = 3.0V 22.5 CC V = 2.7V 21.6 CC Output Power Variation Over P T = T to T (Note 1) 1.9 3.2 dB OUT A MIN MAX Temperature Output Power, Medium-Power P D0 = GND, D1 = V (MAX2233 only) 15.8 dBm OUT CC Mode 2 MAX2232/MAX2233