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| 3.3 V, 802.11g/b Linear Power Amplifier AP178-321 Features High Linearity @ 25 dBm DC Current: 110 mA @ 19 dBm 802.11b/g OFDM Compliant 1800-2500 MHz Operation 19 dB Small Signal Gain 27 dBm P1 dB @ 2.4 GHz Uses Single DC Bias Supply Low Cost Plastic Package Available on Tape & Reel 0.007 0.029 (0.180 mm) (0.73 mm) EXPOSED PAD 0.009 (0.23 mm) + 0.003 (0.07 mm) - 0.002 (0.05 mm) 0.0196 (0.50 mm) BSC -321 0.118 (3.00 mm) PIN 1 INDICATOR 0.118 (3.00 mm) 0.008 (0.20 mm) SEATING PLANE 0.001 (0.02 mm) 0.030 (0.75 mm) 0.002 (0.05 mm) 0.017 (0.435 mm) SQ. PIN 1 INDICATOR 0.057 (1.45 mm) SQ. + 0.004 (0.10 mm) - 0.006 (0.15 mm) Description The AP178-321 is a linear, medium power amplifier designed for low voltage operation in a 2.4-2.5 GHz ISM band having linear and high-efficiency performance with 802.11b/g signals. The device is manufactured on advanced InGap HBT process and housed in a 12 Pin 3 x 3 mm QFN package. 0.022 (0.55 mm) 0.004 (0.10 mm) Absolute Maximum Ratings Characteristic RF Input Power Supply Current Supply Voltage Operating Temperature Storage Temperature Value 20 dBm 800 mA 5V -65C to +125C -65C to +125C Electrical Specifications at 25C Parameter Frequency Range Small Signal Gain Output Power at 1 dB compression Linear Output Power1 First Sidelobe2 F = 2.45 GHz F = 2.45 GHz F = 2.45 GHz, IC = 110 mA F = 2.45 GHz, IC = 170 mA, POut = 22.5 dBm F = 2.45 GHz, IC = 186 mA, POut = 22.5 dBm Amplifier DC voltage POut2 = 23.5 dBm POut2 = 22.5 dBm POut1 = 17 dBm Quiescent1 VD Isol. 2.5 Condition Symbol MHz S21 P1 dB POut Min. 1800 17 26 17 19 27 18 -40 -54 3.3 30 186 170 95 47 4.5 Typ. Max. 2500 22 Unit dB dB dBm dBm dBc dBc V dB mA mA mA mA Second Sidelobe2 Operating Voltage Reverse Isolation Current Consumption IQO VCC = 3.3 V, IC = 90 mA (unless otherwise specified) 1. Specifications are defined for the evaluations board below with the 802.11g signal at 36 Mbit/s using 16 QAM OFDM. 2. Specifications are defined for the evaluations board below with the 802.11b signal at 11 Mbit/s with Cos = 0.85 filter. Skyworks Solutions, Inc. [781] 376-3000 * Fax [781] 376-3100 * Email sales@skyworksinc.com * www.skyworksinc.com Specifications subject to change without notice. 6/03A 1 3.3 V, 802.11g/b Linear Power Amplifier AP178-321 Typical Performance Data 120 Iq = 57 mA 8 7 6 Collector Current (mA) 110 EVM (%) 100 90 80 Iq = 47 mA 70 Iq = 40 mA 60 10 12 14 16 18 20 5 4 3 2 1 Iq = 57 mA 0 10 12 14 16 18 20 Iq = 47 mA Iq = 40 mA Output Power (dBm) Output Power (dBm) ICC vs. Output Power EVM vs. Output Power 2 Skyworks Solutions, Inc. [781] 376-3000 * Fax [781] 376-3100 * Email sales@skyworksinc.com * www.skyworksinc.com Specifications subject to change without notice. 6/03A 3.3 V, 802.11g/b Linear Power Amplifier AP178-321 Evaluation Board Schematic VCC Q1 PUMZ1 560 Q2 GND L1 BLM11HA471 C6 20 p C3 1n GND GND C5 2p 1 3.3 V C2 R1 R2 4.3 C1 47 F GND L3 22 nH C4 GND 10 p 16 GND VCC1 Input 15 14 VCC1 VCC1 NC 13 Output 12 11 10 GND C8 GND 0.1 F C9 GND 0.1 F L4 22 nH GND (0603) C10 1.5 pF L5 1 nH (Printed Meander) T2 R6 3k C12 10 pF D1 SMS7630 D2 C13 +VDet R7 56 k 4.7 F R3 PA_PE 12 k Input T1 0.35 x 0.6 mm R4 270 C7 560 p GND GND 2 3 4 C11 20 pF Output VB Q1 AP178-321 Output VREG Output 3.2 V 5 V Q2 9 B GND N/A N/A N/A 6 7 8 GND R5 Not Used 100 p GND Evaluation Board Layout (Top View) Evaluation Board Layout (Bottom View) Skyworks Solutions, Inc. [781] 376-3000 * Fax [781] 376-3100 * Email sales@skyworksinc.com * www.skyworksinc.com Specifications subject to change without notice. 6/03A 3 |
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