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Updated at 17/06/2025 10:30:15(UTC+8)
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Description
- Product Details
- The AD9276 is designed for low cost, low power, small size, and ease of use. It contains eight channels of a variable gain amplifier (VGA) with a low noise preamplifier (LNA); an anti-aliasing filter (AAF); a 12-bit, 10 MSPS to 80 MSPS analog-to-digital converter (ADC); and an I/Q demodulator with programmable phase rotation.
- Each channel features a variable gain range of 42 dB, a fully differential signal path, an active input preamplifier termination, a maximum gain of up to 52 dB, and an ADC with a conversion rate of up to 80 MSPS. The channel is optimized for dynamic performance and low power in applications where a small package size is critical.
- The LNA has a single-ended-to-differential gain that is selectable through the SPI. The LNA input noise is typically 0.75 nV/√Hz at a gain of 21.3 dB, and the combined input-referred noise of the entire channel is 0.85 nV/√Hz at maximum gain. Assuming a 15 MHz noise bandwidth (NBW) and a 21.3 dB LNA gain, the input SNR is roughly 92 dB. In CW Doppler mode, each LNA output drives an I/Q demodulator. Each demodulator has inde-pendently programmable phase rotation through the SPI with 16 phase settings.
- The AD9276 requires a LVPECL-/CMOS-/LVDS-compatible sample rate clock for full performance operation. No external reference or driver components are required for many applications.
- The ADC automatically multiplies the sample rate clock for the appropriate LVDS serial data rate. A data clock (DCO±) for capturing data on the output and a frame clock (FCO±) trigger for signaling a new output byte are provided.
- Powering down individual channels is supported to increase battery life for portable applications. A standby mode option allows quick power-up for power cycling. In CW Doppler opera-tion, the VGA, AAF, and ADC are powered down. The power of the TGC path scales with selectable ADC speed power modes.
- The ADC contains several features designed to maximize flexibility and minimize system cost, such as a programmable clock, data alignment, and programmable digital test pattern generation. The digital test patterns include built-in fixed patterns, built-in pseudo-random patterns, and custom user-defined test patterns entered via the serial port interface.
- Fabricated in an advanced CMOS process, the AD9276 is available in a 16 mm × 16 mm, RoHS compliant, 100-lead TQFP. It is specified over the industrial temperature range of −40°C to +85°C.
- **Product Highlights**
- 1. Small Footprint - Eight channels are contained in a small, space-saving package. Full TGC path, ADC, and I/Q demodulator contained within a 100-lead, 16 mm × 16 mm TQFP
- 2. Low Power - In TGC mode, low power of 195 mW per channel at 40 MSPS. In CW mode, ultralow power of 94 mW per channel
- 3. Integrated High Dynamic Range I/Q Demodulator with Phase Rotation
- 4. Ease of Use - A data clock output (DCO±) operates up to 480 MHz and supports double data rate (DDR) operation
- 5. User Flexibility - Serial port interface (SPI) control offers a wide range of flexible features to meet specific system requirements
- 6. Integrated Second-Order Antialiasing Filter - This filter is placed before the ADC and is programmable from 8 MHz to 18 MHz.
- **Applications**
- Medical imaging/ultrasound
- Automotive radar
- ### Features and Benefits
- 8 channels of LNA, VGA, AAF, ADC and I&Q Demodulator
- Low noise preamplifier (LNA) - Please see data sheet for additional information.
- Variable gain amplifier (VGA)
- Attenuator range: −42 dB to 0 dB
- Postamp gain: 21 dB/24 dB/27 dB/30 dB
- Linear-in-dB gain control
- Antialiasing filter (AAF)
- Programmable second-order LPF from 8 MHz to 18 MHz
- Programmable HPF
- Analog-to-digital converter (ADC) - Please see data sheet for additional information.
- |
- CW Mode I & Q demodulator
- Invididual programmable phase rotation
- Output dynamic range per channel >160 dBFS/√Hz
- Low power, 195 mW per channel at 12 bits/40 MSPS (TGC), 94 mW per channel for CW Doppler
- Flexible power-down modes
- Overload recovery in <10 ns
- Fast recovery from low power standby mode, <2 μs
- 100-lead TQFP-EP
- ---|---
AD9276 Specifications
| Attribute | Attribute Value |
|---|---|
| Datasheet | Datasheet |
| 3D Model | 3D Model |
| Show | |
| Product Lifecycle Status | Active |
Order guide
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- Please confirm with the logistics company in advance for remote areas.
(Additional charges ($35-$50) may apply for delivery in these areas)
- Delivery date: usually 2 to 7 working days.
- A tracking number will be sent after your order ships.
- - 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.
- - Income Quality Control (IQC), 1000+ qualified dealers. - Chips are tested by authoritative organizations to ensure the quality, authenticity and safety of your device. - Decapsulation control - X-ray control - XRF inspection - Electrical testing - Surface testing -Digital components warehouse, covering an area of 800 square meters, with constant temperature and humidity
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