sky73121-11 Skyworks Solutions, Inc., sky73121-11 Datasheet

sky73121-11

Manufacturer Part Number

sky73121-11

Description

Sky73121-11 1805?1890 Mhz High Performance Vco/synthesizer With Integrated Switch

Manufacturer

Skyworks Solutions, Inc.

Datasheet

1.SKY73121-11.pdf (22 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

SKY73121-11

Manufacturer:

SKYWORKS/思佳讯

Quantity:

20 000

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DATA SHEET

SKY73121-11: 1805–1890 MHz High Performance

VCO/Synthesizer With Integrated Switch

Applications

Features

2G, 2.5G, and 3G base station transceivers:

General purpose RF systems

Frequency operation range: 1805 to 1890 MHz

Process-tolerant compensation for VCO

24-bit

Ultra-fine frequency resolution of 0.001 ppm

Flexible reference frequency selection

Three-wire serial interface up to 20 MHz clock frequency

Integrated PLL supply regulation for spur isolation

MCM (38-pin, 9 x 12 mm) SMT package (MSL3, 260 C per

JEDEC J-STD-020)

GSM, EDGE, CDMA, WCDMA

fractional-N synthesizer

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

200888B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 1, 2009

FREF

Vtune

Figure 1. SKY73121-11 Functional Block Diagram

cap [6:0]

Flag

Divider

Cal

SP1

PFD

Low Pass Filter

(LD/Test)

Mux

PLL

Vtune

RF Charge

Pump

SC1

Modulator

Divider

ΔΣ

CPO RF

cap [6:0]

Calibration

Divide-by-2

Coarse

Digital

Description

Skyworks SKY73121-11 Voltage-Controlled Oscillator

(VCO)/Synthesizer is a fully integrated, high performance signal

source for high dynamic range transceivers. The device provides

ultra-fine frequency resolution, fast switching speed, and low

phase noise performance for 2G, 2.5G, and 3G base station

transceivers.

The SKY73121-11 VCO/Synthesizer is a key building block for

high-performance radio system designs that require low power

and a fine step size. Reference clock generators with an output

frequency up to 52 MHz can be used with the SKY73121-11. A

functional block diagram is shown in Figure 1. As indicated in this

diagram, the reference frequency is divided down by 1, 2, 4, or 8

in the R1 divider, depending on the value of the reference divisor

input (R1). Refer to the Reference Input Divider section (page 10)

for more information.

The SKY73121-11 VCO/Synthesizer is provided in a compact,

38-pin Multi-Chip Module (MCM). The device package and pinout

are shown in Figure 2. Signal pin assignments and functional pin

descriptions are provided in Table 1.

Buffer

Calibration

Complete

Prescaler

P/P+1

Interface

3-Wire

Serial

VCO Out +

VCO Out –

SR Out +

SR Out –

INB

Z = 1:4

RF Output

SW_EN

CLK

DAT

S1040

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