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SA8027, SA8027DH, SA8027W

Table of contents:
Info of SA8027
Info of SA8027DH
Info of SA8027W

SA8027, SA8027DH, SA8027W Selling Leads, Datasheet

MFG:PHILIPS Package Cooled:TSOP20 D/C:original stock

SA8027, SA8027DH, SA8027W Datasheet download

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Part Number: SA8027

MFG: PHILIPS

Package Cooled: TSOP20

D/C: original stock

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SA8027 General Description

The SA8027 BICMOS device integrates programmable dividers, charge pumps and phase comparators to implement phase-locked loops. The device is designed to operate from 3 NiCd cells, in pocket phones, with low current and nominal 3 V supplies.

The synthesizer operates at VCO input frequencies up to 2.5 GHz. The synthesizer has fully programmable main, auxiliary and reference dividers. All divider ratios are supplied via a 3-wire serial programming bus. The main divider is a fractional-N divider with programmable integer ratios from 512 to 65535.

Separate power and ground pins are provided to the charge pumps and digital circuits. The ground pins should be externally connected to prevent large currents from flowing across the die and causing damage. V_DDCP must be equal to or greater than V_DD.

The charge pump current (gain) is fully programmable, while ISET is set by an external resistance at the R_SET pin (refer to section 1.5, Main Output Charge Pumps and Fractional Compensation Currents). The phase/frequency detector charge pump outputs allow for implementing a passive loop filter.

SA8027 Features

• Low phase noise
• Low power
• Fully programmable main and auxiliary dividers
• Programmable Normal & Integral charge pumps outputs
• Fast Locking Adaptive mode design
• Internal fractional spurious compensation
• Hardware and software power down
• Split supply for V_DD and V_DDCP
• Loop filter bandwidth programmability

SA8027 Typical Application

• 500 to 2500 MHz wireless equipment
• Cellular phones (all standards)
• WLAN
• Portable battery-powered radio equipment.

SA8027 Connection Diagram

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