Datasheet for AD9675:
- Manufacturer Part Number : AD9675
- Manufacturer : AD
- Description : Octal Ultrasound AFE with JESD204B
- Series : AD9675
- Reference Price : USD 54.4
- 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 : Recommended for New Designs
- Status : Production
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : AD9675
- 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, ADC, and digital RF decimator
- Low power:
- 150 mW per channel, TGC mode, 40 MSPS
- 62.5 mW per channel, CW mode - 10 mm × 10 mm, 144-ball CSP_BGA
- TGC channel input referred noise: 0.82 nV/√Hz, maximum gain
- Flexible power-down modes
- Fast recovery from low power standby mode: 2 μs
- Low noise preamplifier (LNA)
- Input referred noise:
0.78 nV/√Hz, gain = 21.6 dB - Programmable gain: 15.6 dB, 17.9 dB, or 21.6 dB
- 0.1 dB compression: 1000 mV p-p, 750 mV p-p, or 450 mV p-p
- Flexible active input impedance matching
- Variable gain amplifier (VGA)
- Attenuator range: 45 dB, linear in dB gain control
- Postamp gain (PGA): 21 dB, 24 dB, 27 dB, or 30 dB
- Antialiasing filter (AAF)
- Programmable second-order low-pass filter (LPF) from 8 MHz to 18 MHz or 13.5 MHz to 30 MHz and high-pass filter (HPF)
- Analog-to-digital converter (ADC)
- SNR: 75 dB, 14 bits up to 125 MSPS
- JESD204B Subclass 0 coded serial digital outputs
- See data sheet for additional features
The AD9675 is designed for low cost, low power, small size, andease of use for medical ultrasound. It contains eight channels ofa variable gain amplifier (VGA) with a low noise preamplifier(LNA), a continuous wave (CW) harmonic rejection I/Qdemodulator with programmable phase rotation, an antialiasingfilter (AAF), an analog-to-digital converter (ADC), and a digitalhigh-pass filter and RF decimation by 2 for data processing andbandwidth reduction.
Each channel features a maximum gain of up to 52 dB, a fullydifferential signal path, and an active input preamplifier termination.The channel is optimized for high dynamic performanceand low power in applications where a small package size is critical.
The LNA has a single-ended to differential gain that is selectablethrough the serial port interface (SPI). Assuming a 15 MHznoise bandwidth (NBW) and a 21.6 dB LNA gain, the LNAinput SNR is 94 dB. In CW Doppler mode, each LNA outputdrives an I/Q demodulator that has independentlyprogrammable phase rotation with 16 phase settings.
Power-down of individual channels is supported to increasebattery life for portable applications. Standby mode allows quickpower-up for power cycling. In CW Doppler operation, theVGA, AAF, and ADC are powered down. The ADC containsfeatures to maximize flexibility and minimize system cost, suchas a programmable clock, data alignment, and programmabledigital test pattern generation. The digital test patterns includebuilt-in fixed patterns, built-in pseudorandom patterns, andcustom user-defined test patterns entered via the SPI.
Applications
- Medical imaging/ultrasound
- Nondestructive testing (NDT)
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
