Description

The AD9276 is a low-cost, low-power, small-sized electronic component model designed for ease of use. It features eight channels of a variable gain amplifier (VGA) with a low noise preamplifier (LNA), an antialiasing filter (AAF), a 12-bit, 10 MSPS to 80 MSPS analog-to-digital converter (ADC), and an I/Q demodulator with programmable phase rotation.

Specifications and features

• 8 channels of LNA, VGA, AAF, ADC, and I/Q demodulator
• Low noise preamplifier (LNA)
• Input-referred noise: 0.75 nV/√Hz typical at 5 MHz (gain = 21.3 dB)
• 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
• 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)
• 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
• CW mode I/Q demodulator
• Individual 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

Application Scenarios

• Medical imaging/ultrasound
• Automotive radar

Comparison

• Low cost
• Low power consumption
• Small size
• Easy to use

• None identified