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Updated at 17/06/2025 10:30:15(UTC+8)
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Description
- Product Details
- The AD8366 is a matched pair of fully differential, low noise and low distortion, digitally programmable variable gain amplifiers (VGAs). The gain of each amplifier can be programmed separately or simultaneously over a range of 4.5 dB to 20.25 dB in steps of 0.25 dB. The amplifier offers flat frequency performance from dc to 70 MHz, independent of gain code.
- The AD8366 offers excellent spurious-free dynamic range, suitable for driving high resolution analog-to-digital converters (ADCs). The NF at maximum gain is 11.4 dB at 10 MHz and increases ~2 dB for every 4 dB decrease in gain. Over the entire gain range, the HD3/HD2 are better than −90 dBc for 2 V p-p at the output at 10 MHz into 200 Ω. The two-tone intermodulation distortion of −90 dBc into 200 Ω translates to an OIP3 of 45 dBm (38 dBVrms). The differential input impedance of 200 Ω provides a well-defined termination. The differential output has a low impedance of ~25 Ω.
- The output common-mode voltage defaults to VPOS/2 but can be programmed via the VCMA and VCMB pins over a range of voltages. The input common-mode voltage also defaults to VPOS/2 but can be driven down to 1.5 V. A built-in, dc offset compensation loop can be used to eliminate dc offsets from prior stages in the signal chain. This loop can also be disabled if dc-coupled operation is desired.
- The digital interface allows for parallel or serial mode gain programming. The AD8366 operates from a 4.75 V to 5.25 V supply and consumes typically 180 mA. When disabled, the part consumes roughly 3 mA. The AD8366 is fabricated using Analog Devices, Inc., advanced silicon-germanium bipolar process, and it is available in a 32-lead exposed paddle LFCSP package. Performance is specified over the −40°C to +85°C temperature range.
- **Applications**
- * Baseband I/Q receivers
- * Diversity receivers
- * Wideband ADC drivers
- ### Features and Benefits
- Matched pair of differential, digitally controlled VGAs
- Gain range: 4.5 dB to 20.25 dB
- 0.25 dB gain step size
- Operating frequency
- DC to 150 MHz (2 V p-p)
- 3 dB bandwidth: 600 MHz
- Noise figure (NF)
- 11.4 dB at 10 MHz at maximum gain
- 18 dB at 10 MHz at minimum gain
- OIP3: 45 dBm at 10 MHz
- HD2/HD3
- Better than −90 dBc for 2 V p-p output at 10 MHz at maximum gain
- Differential input and output
- Adjustable output common-mode
- Optional dc output offset correction
- Serial/parallel mode gain control
- Power-down feature
- Single 5 V supply operation
AD8366 Specifications
| Attribute | Attribute Value |
|---|---|
| Datasheet | Datasheet |
| 3D Model | 3D Model |
| Show | |
| Product Lifecycle Status | Recommended for New Designs |
| RoHS | RoHS Compliant |
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- Delivery date: usually 2 to 7 working days.
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- - Carefully inspected and packed by ManyChip warehouse - Vacuum packaging - Anti-static packaging - Shockproof foam
- The terms here are for reference only, the actual terms are subject to the sales quotation. - Please confirm product specifications when ordering. - MOQ refers to the minimum order quantity required to purchase each part. - If you have special ordering instructions, please indicate them on the ordering page. - Inspection (PSI) will be performed prior to shipment.
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