3. TECHNICAL BRIEF
3.26 Power Amplifier Module
| L606 |
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C634 | 1.2nH | C635 |
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R615 |
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C641 | 1 | C642 |
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| VBAT |
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| C629 | C628 | C630 |
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| 10u |
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| 1u |
| 27p |
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| TQM7M5005 |
| U600 |
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| 15 | PGND | GSM850_900_IN | 7 |
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| 8 | 6 |
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| R610 | 1 | |||||||
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| GND3 |
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| TX_EN |
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| PA_EN | ||||||||
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| 14 | GND2 |
| VRAMP | 5 |
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| R611 | 10K | TX_RAMP | ||||||
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| 9 | GND1 |
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| BY_CAP2 |
| VBATT |
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| 13 | BY_CAP1 |
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| BS | 3 |
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| R612 | 1 | PA_BAND | ||
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| R613 | 1 | |||||
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| GSM850_900_OUT | MODE_SELECT |
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| PA_MODE | |||||||||
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| 12 | 1 |
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| R614 | 1 | |||||||
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| DCS_PCS_OUT | DCS_PCS_IN |
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| TXHB | |||||||||
| C639 |
| C640 |
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| C636 |
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| C637 |
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| DNI |
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| 0.01u |
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Figure 28. Power Amplifier Circuit Diagram
Table 10 PAM pin description
Pin | Mame | Description |
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1 | MODE | GMSK/EDGE Power control mode. L=GMSK, H=EDGE |
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2 | DCS/PCS_IN | RF input(DCS/PCS) DC Blocked |
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3 | BS | Band Select |
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4 | REVD1 | Reserved |
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5 | VBATT | DC Supply |
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6 | VRAMP | Analog PA Bias Control(All Bands, EDGE Mode) |
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| Analog Output Power Control(All Bands, GMSK Mode) |
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7 | GSM_IN | RF input(EGSM) DC Blocked |
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9 | GSM_OUT | RF Output(EGSM) DC Blocked |
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10,11 | GND | Ground |
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12 | REVD2 | Reserved |
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13,14,15 | GND | Ground |
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16 | DCS/PCS_OUT | RF Output(DCS/PCS) DC Blocked |
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Pad | GND PAD GRID | Ground pad grid is device underside. |
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Copyright © 2008 LG Electronics. Inc. All right reserved. | - 61 - | LGE Internal Use Only |
Only for training and service purposes |
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