Low-Cost, Low-Voltage, PA Power Control Amplifier for GSM ApplicationsABSOLUTE MAXIMUM RATINGS VCC to GND..7V Continuous Power Dissipation (TA = +70°C) SR1, SR2, SR3, PC, SHDN, 8-Pin µMAX (derate 4.10mW/°C above +70°C) ..330mW OUT to GND ..-0.3V to (VCC + 0.3V) 8-Pin SO (derate 5.88mW/°C above +70°C)...471mW SR1 to SR3..0 to VCC Operating Temperature Range ...-40°C to +85°C OUT and SR3 Short-Circuit Duration Junction Temperature. ...+150°C to VCC or GND ..Continuous Storage Temperature Range. ..-65°C to +150°C Current into Any Pin..±50mA Lead Temperature (soldering, 10s) ...+300°C MAX4473 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. ELECTRICAL CHARACTERISTICS (VCC = 2.7V to 6.5V, SHDN > 2.4V, MAX4473 test circuit, RG1 = RG2 = 1kΩ ±1%, RG3 = 2.5kΩ ±1%, RSENSE = 100Ω ±1%, RL = 10kΩ, CL = 300pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = 6.0V, VPC = 1.0V, TA = +25°C.) (Note 1) PARAMETERCONDITIONSMINTYPMAXUNITSGENERAL Supply Voltage 2.7 6.5 V Supply Current VPC = 0 1.2 2 mA Shutdown Supply Current SHDN < 0.4V, RL = 10Ω 0.03 1 µA SHDN Input High Voltage 2.4 V SHDN Input Low Voltage 0.4 V SHDN Input Current SHDN = 0 to VCC ±0.5 µA ERROR AMPLIFIER 1V < VSR1, VSR2 < VCC ±0.5 ±2 SR1, SR2 Input Offset Voltage mV 1V < VSR1, VSR2 < VCC at +25°C ±0.5 ±1 SR1, SR2 Input Offset Voltage 1V < VSR1, VSR2 < VCC 10 µV/°C Drift SR1, SR2 Input Common-Mode Inferred from CMRR test; VSR2 = GND (Note 2) 1 VCC V Voltage Range SR1, SR2 Input Bias Current 1V < VSR1, VSR2 < VCC, VPC = GND, SR3 = unconnected ±0.04 ±1 µA SR1, SR2 Input Bias Offset 1V < VSR1, VSR2 < VCC, VPC = GND, SR3 = unconnected ±0.001 ±0.2 µA Current SR1, SR2 Shutdown Leakage SHDN < 0.4V, VSR1 = VSR2 = VCC ±0.001 ±0.5 µA Current 1V < V VCC = 2.7V 65 85 Common-Mode Rejection Ratio SR1, VSR2 < VCC, dB VPC = GND VCC = 6.5V 75 95 Power-Supply Rejection Ratio 2.7V < VCC < 6.5V, VPC = GND 80 90 dB VCC = 6.5V, 0.3V < VOUT < 6V 80 130 RL = 10kΩ to VCC / 2 V C C = 2.7V , 0.3V < V OU T < 2.4V 80 125 Large-Signal Gain dB V C C = 6.5V , 0.7V < V OU T < 5.5V 80 130 RL = 500Ω to VCC / 2 V C C = 2.7V , 0.7V < V OU T < 2.2V 80 120 2_______________________________________________________________________________________
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