Description

The AD9272 is a low-cost, low-power, small-size electronic component model designed for ease of use. It features eight channels of a low noise preamplifier (LNA), a variable gain amplifier (VGA), an antialiasing filter (AAF), and a 12-bit, 10 MSPS to 80 MSPS analog-to-digital converter (ADC).

Specifications and features

• 8 channels of LNA, VGA, AAF, and ADC
• Low noise preamplifier (LNA)
• Input-referred noise voltage = 0.75 nV/√Hz (gain = 21.3 dB) @ 5 MHz typical
• SPI-programmable gain = 15.6 dB/17.9 dB/21.3 dB
• Single-ended input; VIN maximum = 733 mV p-p/550 mV p-p/367 mV p-p
• Dual-mode active input impedance matching
• Bandwidth (BW) > 100 MHz
• Full-scale (FS) output = 4.4 V p-p differential
• Variable gain amplifier (VGA)
• Attenuator range = -42 dB to 0 dB
• SPI-programmable PGA gain = 21 dB/24 dB/27 dB/30 dB
• Linear-in-dB gain control
• Antialiasing filter (AAF)
• Programmable 2nd-order low-pass filter (LPF) from 8 MHz to 18 MHz
• Programmable high-pass filter (HPF)
• Analog-to-digital converter (ADC)
• 12 bits at 10 MSPS to 80 MSPS
• SNR = 70 dB
• SFDR = 75 dB
• Serial LVDS (ANSI-644, IEEE 1596.3 reduced range link)
• Data and frame clock outputs
• Includes an 8 × 8 differential crosspoint switch to support continuous wave (CW) Doppler
• Low power, 195 mW per channel at 12 bits/40 MSPS (TGC)
• 120 mW per channel in CW Doppler
• Flexible power-down modes
• Overload recovery in < 10 ns
• Fast recovery from low power standby mode, < 2 μs
• 100-lead TQFP

Application Scenarios

The AD9272 is commonly used in medical imaging/ultrasound and automotive radar applications.

Comparison

• Low cost
• Low power consumption
• Small size
• Flexible power-down modes
• Fast recovery from low power standby mode

• None mentioned