sky74068-11 Skyworks Solutions, Inc., sky74068-11 Datasheet
sky74068-11
Manufacturer Part Number
sky74068-11
Description
Sky74068-11 Dual-band, Dual-mode Transmitter For Cdma, Amps, And Pcs Mobile Handset Applications
Manufacturer
Skyworks Solutions, Inc.
Datasheet
1.SKY74068-11.pdf
(2 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SKY74068-11
Manufacturer:
SKYWORKS/思佳讯
Quantity:
20 000
PRODUCT SUMMARY
SKY74068-11: Dual-Band, Dual-Mode Transmitter for CDMA,
AMPS, and PCS Mobile Handset Applications
Applications
• Dual-band, dual-mode handsets
• Cellular and PCS band phones
Features
• Low power consumption in all operating modes
• Direct upconversion architecture
• Device controlled using a three-wire read/write serial bus
• Baseband RC filter to reject receive band noise
• Fully integrated VCO with auto-tuning
• Dual-mode fractional-N/integer-N PLL
• Variable gain PA drivers
• Differential cellular driver output matched to 200 Ω
• Single-ended PCS driver output matched to 50 Ω
• Transmit power control with >85 dB dynamic range
• Low current consumption at low transmit power minimizes
• Hardware TX_ENABLE for gated mode operation
• RFLGA™ (32-pin, 5 x 5 x 1 mm) Pb-free (MSL3, 260 °C per
− CDMA and AMPS modes in the cellular band
− CDMA mode in the PCS band
interface with independent supply voltage
current consumption and noise
JEDEC J-STD-020) package with downset paddle
200600C • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • September 16, 2007
Skyworks offers lead (Pb)-free, RoHS (Restriction of
Hazardous Substances) compliant packaging.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
Description
The SKY74068-11 transmitter is a highly integrated device for
dual-band Code Division Multiple Access (CDMA) handsets in the
cellular CDMA, Advanced Mobile Phone System (AMPS), and
Personal Communications System (PCS) modes.
The device requires a minimum number of external components
to complete a CDMA radio subsystem. Included on-chip are the
baseband filter, direct upconversion In-Phase and Quadrature (I/Q)
mixers, variable gain power amplifier (PA) drivers, a fully
integrated Voltage Controlled Oscillator (VCO) with Local Oscillator
(LO) generation blocks, and a dual-mode fractional-N/integer-N
Phase Locked Loop (PLL).
External components needed for operation include bias resistors,
bypass capacitors, and passives to comprise the PLL loop filter.
The signal enters the chip as an analog baseband I/Q signal. It is
filtered by the baseband filter and upconverted to the desired RF
transmit frequency. The signal is amplified by one of two
upconverters, depending on whether the chip is operating in
cellular or PCS mode. The resulting signal is fed through the
appropriate PA driver stage to provide variable output power and
to drive the external PA. The signal is then filtered by an external
Surface Acoustic Wave (SAW) filter and sent to the PA to obtain
the final rated power.
A functional block diagram for the SKY74068-11 is shown in
Figure 1.
1
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sky74068-11 Summary of contents
Page 1
... PCS mode. The resulting signal is fed through the appropriate PA driver stage to provide variable output power and to drive the external PA. The signal is then filtered by an external Surface Acoustic Wave (SAW) filter and sent to the PA to obtain the final rated power. A functional block diagram for the SKY74068-11 is shown in Figure 1. 1 ...
Page 2
... September 16, 2007 • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • 200600C Generation O 90 Serial I Figure 1. SKY74068-11 Transmitter Block Diagram Manufacturing Part Number SKY74068-11 (Pb-free package PCS_OUT 20 CELL_OUT– 19 CELL_OUT+ 16 S347 Evaluation Kit Part Number ...