AD8369

45分贝数字控制VGA LF至600兆赫 45 dB Digitally Controlled VGA LF to 600 MHz

Product Details

The is a high performance, digitally controlled variable gain amplifier, designed to be used at IF frequencies within cellular receivers.

The device features a 4-bit digitally controlled gain control interface configurable for either parallel or 3 wire serial control. The gain control range spans 45 dB adjustable in 3 dB increments.

The AD8369 is ideally suited to be used in digital IF receivers and is fully specified for operation at common IF frequencies 70 / 140 / 190 / 240 / 380 MHz. The gain stability and flatness is below 0.1 dB over a 20 MHz channel bandwidth at 380 MHz. Coupled with the low distortion and the ability to drive 200 Ω or 1 K Ω, the AD8369 allows optimal placement and flexibility as a high IF gain control element.

The AD8369 is fabricated on an advanced silicon bipolar process, operating on a single 3 or 5 volt supply, packaged in space saving 16-lead thin shrunk small outline TSSOP package and fully specified over the –40ºC to +85ºC temperature range.

### Features and Benefits

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Wide bandwidth 600 MHz

-3 dB bandwidth

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Digitally controlled gain in 3 dB steps

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4-bit parallel or 3-wire serial interface

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Gain control range 45 dB with max gain 40 dB

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Flat gain response out to

380 MHz, <0.2 dB over

20 MHz signal bandwidth

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High linearity output IP3

19.5 dBm @ 70 MHz

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Single ended 200 Ω input and output impedance

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Small footprint 16-lead TSSOP package