CX74005 SKYWORKS | Alldatasheet
Document overview
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- PDF pages: 14
Technical content
Features
- Supports CDMA/AMPS/PCS1900 modes
- Three battery cell operation
- IF inputs and I/Q outputs
- On-chip 100 to 640 MHz oscillators
- Low power operation: <25 mA
- 32-pin Land Grid Array (LGA) 5 x 5 mm package
Applications
- Tri-mode handsets
- CDMA and AMPS modes in the cellular band: − AMPS − CDMA-US − CDMA-Japan
- CDMA mode in the PCS band: − PCS-US − PCS-Korea CNXT044 GND CELL/PCS VCO_VCC VCO_GND CELL_TANK1- CELL_TANK1+ NC PCS_TANK- PCS_TANK+ DIV2/DIV4 PLL+ SLEEP PLL- GND IF_GND GND SIF GND GND NC VGA_PCS_IN+ VGA_PCS_IN- VGA_CDMA_IN+ VGA_CDMA_IN- IF_VCC VGA_GC FM/CDMA VGA_AMPS
Figure 1. Rx ASIC Pinout – 32-Pin LGA Package
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Figure 2. CX74005 Rx ASIC Block Diagram VGA in cellular AMPS, CDMA, and PCS modes. ratio (2 or 4) is available on Pin 11 (DIV2/DIV4). each mode is shown in Table 1.
- Protective outer garments.
- Handle device in ESD safeguarded work area.
- Transport device in ESD shielded containers.
- Monitor and test all ESD protection equipment. The HBM ESD withstand threshold value, with respect to ground, is ±1.5 kV. The HBM ESD withstand threshold value, with respect to VDD (the positive power supply terminal) is also ±1.5 kV.
Table 1. Mode Control Select Signal Switching Note: DIV 2 is used in the evaluation board.
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Table 2. CX74005 Pin Assignments and Signal Descriptions
1 GND Ground
2 FM/CDMA Cellular band mode select: 0 = AMPS, 1 = CDMA
3 CELL/PCS Band select: 0 = Cellular; 1 = PCS
- The trace should be short and connected immediately to the ground plane for best performance.
5 VCO_GND Ground return from the VCO buffers. circuit to prevent parasitic oscillations. circuit to prevent parasitic oscillations.
8 NC No connection
circuit to prevent parasitic oscillations. circuit to prevent parasitic oscillations. 11 DIV2/DIV4 Selects the divide ratio of the VCO to the LO port of the I/Q demodulator: 0 = divide by 2, 1 = divide by 4.
12 PLL+ Differential buffered VCO output
13 PLL– Differential buffered VCO output
14 GND Ground
15 IF_GND Ground
16 SLEEP Activates sleep mode: 0 = Sleep, 1 = Enable
17 VGA_GC The VGA gain control signal. A DC control voltage should be applied to this pin to vary the gain of the VGA. modulation of the signal by the supply ripple.
19 VGA_CDMA_IN– CDMA differential VGA input
20 VGA_CDMA_IN+ CDMA differential VGA input
21 VGA_PCS_IN- PCS differential VGA input. 22 VGA_PCS_IN+ PCS differential VGA input.
23 GND Ground
24 VGA_AMPS AMPS VGA input
25 GND Ground
26 GND Ground
27 Q– Q channel differential output
28 Q+ Q channel differential output
29 I– I channel differential output
30 I+ I channel differential output
31 GND Ground
32 GND Ground
Table 3. Absolute Maximum Ratings Table 4. Recommended Operating Conditions Table 5. CX74005 Rx ASIC Electrical Specifications (1 of 2)
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Table 5. CX74005 Rx ASIC Electrical Specifications (2 of 2)
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Figure 9. AMPS Noise Figure vs. Control Voltage @ 25 °C Figure 11. AMPS VGA Noise Figure vs. Control Voltage @ 85 °C at Figure 13. CDMA IIP3 vs. Control Voltage @ 25 °C Figure 10. AMPS Gain Noise Figure vs. Control Voltage @ 25 °C Figure 12. AMPS VGA vs. Control Voltage @ 85 °C Figure 14. CDMA Gain vs. Control Voltage @ 25 °C
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Figure 21. CDMA VGA Noise Figure vs. Control Voltage @ 85 °C Figure 23. PCS IIP3 and OIP3 vs. Control Voltage @ 25 °C7 Figure 25. PCS IIP3 vs. Control Voltage @ –30 °C Figure 22. CDMA VGA vs. Control Voltage @ 85 °C Figure 24. PCS VGA vs. Control Voltage @ 25 °C Figure 26. PCS VGA vs. Control Voltage @ –30 °C
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Figure 33. Rx ASIC Package Dimensions – 32-Pin LGA Package
- Carrier tape material: black conductive polycarbonate
- Cover tape material: transparent conductive PSA
- Cover tape size: 9.3 mm width
- All measurements are in millimeters
Figure 34. 32-Pin LGA Tape and Reel Dimensions
101252A Conexant - Preliminary 13 March 13, 2001 Proprietary Information and Specifications Are Subject to Change
Ordering Information
Model Name Manufacturing Part Number Product Revision Rx ASIC CX74005 © 2001, 2002, Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. ("Skyworks") products. These materials are provided by Skyworks as a service to its customers and may be used for informational purposes only. Skyworks assumes no responsibility for errors or omissions in these materials. Skyworks may make changes to its products, specifications and product descriptions at any time, without notice. Skyworks makes no commitment to update the information and shall have no responsibility whatsoever for conflicts, incompatibilities, or other difficulties arising from future changes to its products and product descriptions. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as may be provided in Skyworks’ Terms and Conditions of Sale for such products, Skyworks assumes no liability whatsoever. THESE MATERIALS ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, RELATING TO SALE AND/OR USE OF SKYWORKS™ PRODUCTS INCLUDING WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, PERFORMANCE, QUALITY OR NON-INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. SKYWORKS FURTHER DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. SKYWORKS SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR L OST PROFITS THAT MAY RESULT FROM THE USE OF THESE MATERIALS. Skyworks™ products are not intended for use in medical, lifesaving or life-sustaining applications. Skyworks’ customers using or selling Skyworks™ products for use in such applications do so at their own risk and agree to fully indemnify Skyworks for any damages resulting from such improper use or sale. The following are trademarks of Skyworks Solutions, Inc.: Skyworks™, the Skyworks symbol, and “Breakthrough Simplicity”™. Produ ct names or services listed in this publication are for identification purposes only, and may be trademarks of third parties. Third-party brands and names are the property of their respective owners. Additional information, posted at www.skyworksinc.com, is incorporated by reference.
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