AD9277BSVZ

Overview

The AD9277BSVZ is an integrated octal receiver solution featuring eight independent channels, each comprising a low noise preamplifier (LNA), variable gain amplifier (VGA), programmable antialiasing filter (AAF), 14-bit analog-to-digital converter (ADC), and continuous wave (CW) I/Q demodulator. It operates at sampling rates from 10 MSPS to 50 MSPS with supply voltages of 1.8 V for AVDD1/DRVDD and 3.0 V for AVDD2. Key performance metrics include a signal-to-noise ratio (SNR) of 73 dB, spurious-free dynamic range (SFDR) of 75 dB, and input-referred noise as low as 0.75 nV/√Hz. The device supports flexible power-down modes, achieving 207 mW per channel in TGC mode and 94 mW in CW Doppler mode.

Feature Summary

• Integrated Octal Architecture: Combines LNA, VGA, AAF, 14-bit ADC, and I/Q demodulator in a single 100-lead TQFP_EP package.
• High Dynamic Range Performance: Delivers 73 dB SNR and 75 dB SFDR with input-referred noise of 0.75 nV/√Hz at maximum LNA gain.
• Programmable Signal Conditioning: Features SPI-selectable LNA gains (15.6/17.9/21.3 dB), VGA attenuation (-42 dB to 0 dB), and AAF cutoff frequencies (8 MHz to 18 MHz).
• Low Power Operation: Consumes 207 mW per channel at 50 MSPS in TGC mode and 94 mW per channel in CW Doppler mode.

Applications

• Medical imaging and ultrasound systems
• Automotive radar applications

Procurement Notes

Verify the specific suffix 'BSVZ' corresponds to the 100-lead TQFP_EP package and industrial temperature range (-40°C to +85°C). Confirm that the ordering part number matches the exact revision required for the design, as Analog Devices may update documentation or manufacturing sites without changing the base model number. Check for any specific RoHS compliance markings on the datasheet revision.

Selection Notes

Select this component when system requirements demand high channel count integration within a small footprint. Ensure the application utilizes LVDS-compatible clock signals, as the device requires LVPECL, CMOS, or LVDS inputs. Verify that the required dynamic range exceeds 73 dB SNR and that the 14-bit resolution is sufficient for the target signal processing chain. Consider thermal management due to the 16 mm x 16 mm package size and total power dissipation up to 1.93 W.

Part Context

The AD9277BSVZ belongs to the AD927x family of integrated receiver solutions designed for high-performance analog front ends. It serves as a direct replacement for discrete LNA/VGA/ADC chains in multi-channel architectures. Unlike the AD9276 which offers 12-bit resolution, the AD9277 provides 14-bit resolution, offering higher dynamic range at the cost of increased power consumption. It shares the same pinout and functional block diagram structure as other members in the series, facilitating board-level upgrades.

Replacement Considerations

For lower resolution needs, the AD9276BSVZ offers identical functionality with 12-bit ADCs. For applications requiring crosspoint switching instead of I/Q demodulation, consider the AD9271BSVZ or AD9273BSVZ. All these parts share the same 100-lead TQFP_EP package and pin configuration, allowing for potential drop-in replacements if electrical parameters meet the design constraints.