Document
PA2423U
RangeChargerTM 2.4 GHz Bluetoothtm Power Amplifier IC Preliminary
Applications
Bluetoothtm wireless technology (Class 1) USB dongles PCMCIA, flash cards Access points 2.4 GHz cordless telephone
Product Description
A monolithic, high-efficiency, silicon-germanium power amplifier IC, the PA2423U is designed for 2.4 GHz wireless applications, including BluetoothTM Class1 and 2.4 GHz cordless telephone applications. It delivers +22.5 dBm output power making it capable of overcoming insertion losses of up to 2.5 dB between amplifier output and antenna input. The PA2423U provides a digital control input for controlling power up and power down modes of operation. The PA2423U operates at 3.3 V DC. At typical output power level (+22.5 dBm), the current consumption is 135 mA. The silicon/silicon-germanium structure of the PA2423U, and its exposed die-pad package, soldered to the system PCB, provide high thermal conductivity and a subsequently low junction temperature. This device is capable of operating at a duty cycle of 100 percent. The device is pin for pin compatible to the PA2423L.
Features
+22.5 dBm Output Power Low current 108 mA typical @ POUT = +20 dBm CMOS Enable Interface Power-control and power-down modes 3.3 V single supply operation Thin, lead-free 6 pin QFN package
Ordering Information
Part Number PA2423U PA2423U-R PA2423U-EV1 Package 6 pin QFN (0.5 mm height) 6 pin QFN (0.5 mm height) Evaluation Kit Remark Samples Tape & Reel
Functional Block Diagram
V
CT L
V
CC0
V
R A MP
Bias Generator
Control Circuitry
IN
Stage 1
Interstage Match
Stage 2
OUT/V C C 2
GND
V
CC1
GND
Figure 1: PA2423U Block Diagram
131-DST-01 Rev 1.1 Apr-18-2006
Confidential
QA041806
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PA2423U
RangeChargerTM 2.4 GHz Bluetoothtm Power Amplifier IC Preliminary
Pin-Out Diagram
PA2423U TopView
OUT/V C C 2 OUT/V C C 2 6
PA2423U Bottom View
V C TL V R AMP
1 2
6
1 2
V C TL V R AMP
5 4
V CC1 V CC0
V CC1 V CC0
5 4
Die Pad
3
IN
Figure 2: PA2423U Pin-Out
Pin Out Description
Pin No. 1 2 3 4 5 6 Die Pad Name VCTL VRAMP IN VCC0 VCC1 OUT/VCC2 GND Description Controls the output level of the power amplifier. An analog control signal between 0 V and VCC varies the PA output power between minimum and maximum values Power Amplifier Enable pin. A digital control signal with logic high (power up) and logic low (power down) is used to turn the device on and off. Power amplifier RF input, external input matching network with DC blocking is required Bias supply voltage Stage 1 collector supply voltage, external inter-stage matching network is required PA Output and Stage2 collector supply voltage, external output matching network with DC blocking is required Heatslug Die Pad is ground
131-DST-01 Rev 1.1 Apr-18-2006
Confidential
QA041806
IN
3
2 of 10
PA2423U
RangeChargerTM 2.4 GHz Bluetoothtm Power Amplifier IC Preliminary
Absolute Maximum Ratings
Operation in excess of any one of above Absolute Maximum Ratings may result in permanent damage. This device is ESD sensitive. Handling and assembly of this device should be at ESD protected workstations.
Symbol VCC VCTL VRAMP IN TA TSTG Tj Supply Voltage Control Voltage Ramping Voltage RF Input Power
Parameter
Min. -0.3 -0.3 -0.3 -40 -40 -
Max. +3.6 VCC VCC +8 +85 +150 +150
Unit V V V dBm °C °C °C
Operating Temperature Range Storage Temperature Range Maximum Junction Temperature
DC Electrical Characteristics
Conditions: Symbol VCC ICC Supply Voltage Supply Current (ICC = IVCC0 + IVCC1 + IVCC2), VCTL = 3.3 V, POUT_MAX ≤ 22.5 dBm Supply Current variation over temperature from TA = 25 °C (-40 °C < TA < +85 °C) PA Output Power Control Voltage Range Current sunk by VCTL pin Logic High Voltage Logic Low Voltage Leakage Current when VRAMP = 0 V, No RF, VCTL = high VCC0 = VCC1 = VCC2 = VRAMP = VCTL = 3.3 V, PIN = 0 dBm, TA = 25 °C, f = 2.45 GHz, input and output externally matched to 50Ω unless otherwise noted. Parameter Min. 2.7 Typ. 3.3 135 Max. 3.6 160 Unit V mA
∆IccTEMP VCTL ICTL VRAMP Istdby
0 2.0 -
25 200 0.5
VCC 250 0.8 10
% V µA V V µA
131-DST-01 Rev 1.1 Apr-18-2006
Confidential
QA041806
3 of 10
PA2423U
RangeChargerTM 2.4 GHz Bluetoothtm Power Amplifier IC Preliminary
AC Electrical Characteristics
Conditions: Symbol fL-U POUT_MAX POUT_MIN ∆Ptemp dPOUT /d VCTL GSS GVAR 2f 3f, IS21IOFF IS12I STAB VCC0 = VCC1 = VCC2 = VRAMP = VCTL = 3.3 V, PIN = 0 dBm TA = 25 °C, f = 2.45 GHz, input and output externally matched to 50Ω unless otherwise noted. Parameter Frequency Range Output Power @ VCTL = 3.3 V Output Power @ VCTL = 0.4 V Output Power variation over temperature (-40 °C < TA <+85 °C) Control Voltage Sensitivity Gain @ PIN = -25 dBm Gain Variation over band (2400-2500 MHz) Harmonics Isolation in “OFF” State, VRAMP = 0 V Reverse Isolation Stability (PIN = 0 dBm, Load VSWR = 6:1) Min. 2400 20.0 25.5 15 32 Typ. 22.5 -20 1 28.5 0.2 -45 -40 36 42 Max. 2500 0 2 120 1.0 -30 -35 Unit MHz dBm dBm dB dBm/V dB dB dBc d.