Silicon Bipolar Darlington Amplifier

The ADA-4643 is a general purpose Silicon Bipolar Darlington Amplifier housed in an industry standard SOT-343 (4-lead SC70) package. The device is a current driven amplifier that operates on a single current supply. It also exhibits flat gain, high linearity and unconditional stability.

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Lifecycle status:Active

• At 900MHz, the ADA-4643 delivers gain of 17.0dB, OIP3 of 28.3dBm and P1dB of 13.4dBm at 35mA/3.5V biasing. Internal input and output 50-ohm matching makes it simple to use with little design efforts, making it an excellent choice for IF, buffer and general purpose amplifiers for the wireless communications market.

Data Sheets & Technical Specifications

• Data Sheet - A 4643 Silicon Bipolar rlington Amplifier(101 KB,PDF)
• Selection Guide - GaAs and Silicon RFICs Selection Guide(38 KB,PDF)

Application Notes

• Application Note - AN 1368: A 4643 13.5 dBm Output P1dB rlington Amplifier(375 KB,PDF)

Obsolescence Notices

• Obsolescence Notice - Product Obsolescence Notice Wireless OBS-070-805LN1, Jul 2005(384 KB,PDF)

Product Change Notices

• Product Changes Notice (PCN) - Assembly and Test related change(195 KB,PDF)
• Product Changes Notice (PCN) - PCN: A04-001-480035-0A, Mar. 2004(153 KB,PDF)
• Product Changes Notice (PCN) - PCN: A05-010-480035-0A, Mar. 2005(21 KB,PDF)
• Product Changes Notice (PCN) - Qualifying New Contract Manufacturers(348 KB,PDF)

Quality & Reliability

• Reliability Data Sheet - ADA-4543, ADA-4643, ADA-4743 Silicon Bipolar Darlington Amplifier Reliability Data Sheet(72 KB,PDF)