Datasheet for AD9271:
- Manufacturer Part Number : AD9271
- Manufacturer : AD
- Description : Octal LNA/VGA/AAF/ADC and Crosspoint Switch
- Series : AD9271
- Reference Price : USD 37.904
- Our Price : We have a better price, contact us by email
- Product Type : High Speed A/D Converters >10 MSPS
- Function : Standard High Speed A/D Converters >20 MSPS
- Current Suggest : Production
- Status : Production
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : AD9271
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
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- 8 channels of LNA, VGA, AAF, and ADC
- Low noise preamplifier (LNA)
Input-referred noise = 1.1 nV/√Hz @ 5 MHz typical, gain = 18 dB
SPI-programmable gain = 14 dB/15.6 dB/18 dB
Single-ended input; VIN maximum = 400 mV p-p/333 mV p-p/250 mV p-p - Dual-mode active input impedance matching
Bandwidth (BW) > 70 MHz
Full-scale (FS) output = 2 V p-p differential
- Variable gain amplifier (VGA)
Gain range = −6 dB to +24 dB
Linear-in-dB gain control - Antialiasing filter (AAF)
3rd-order Butterworth cutoff
Programmable from 8 MHz to 18 MHz - See Data Sheet for Additional Information
The AD9271 is designed for low cost, low power, small size, and ease of use. It contains eight channels of a variable gain amp-lifier (VGA) with low noise preamplifier (LNA); an antialiasing filter (AAF); and a 12-bit, 10 MSPS to 50 MSPS analog-to-digital converter (ADC).
Each channel features a variable gain range of 30 dB, a fully differential signal path, an active input preamplifier termination, a maximum gain of up to 40 dB, and an ADC with a conversion rate of up to 50 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 1.2 nV/√Hz, and the combined input-referred noise of the entire channel is 1.4 nV/√Hz at maximum gain. Assuming a 15 MHz noise bandwidth (NBW) and a 15.6 dB LNA gain, the input SNR is roughly 86 dB. In CW Doppler mode, the LNA output drives a transconductance amp that is switched through an 8 × 6 differential crosspoint switch. The switch is programmable through the SPI.
Applications
- Medical imaging/ultrasound
- Automotive radar
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
