AD9279BBCZ

Semiconductors - ICs

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> Analog-to-Digital Converters - ADC

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Series Information for AD9279BBCZ - Analog Devices

Features

  • feature
    8 channels of LNA, VGA, AAF, ADC, and I/Q demodulator Low power: 141 mW per channel, TGC mode, 40 MSPS; 60 mW per channel, CW mode 10 mm u00d7 10 mm, 144-ball CSP-BGA TGC channel input-referred noise: 0.8 nV/u221aHz, max gain Flexible power-down modes Fast recovery from low power standby mode: <2 u03bcs Overload recovery: <10 ns Low noise preamplifier (LNA) Input-referred noise: 0.75 nV/u221aHz, gain = 21.3 dB Programmable gain: 15.6 dB/17.9 dB/21.3 dB 0.1 dB compression: 1000 mV p-p/ 750 mV p-p/450 mV p-p Dual-mode active input impedance matching Bandwidth (BW): >100 MHz Variable gain amplifier (VGA) Attenuator range: u221245 dB to 0 dB Postamp gain (PGA): 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) SNR: 70 dB, 12 bits up to 80 MSPS Serial LVDS (ANSI-644, low power/reduced signal) CW mode I/Q demodulator Individual programmable phase rotation Output dynamic range per channel: >160 dBc/u221aHz Output-referred SNR: 155 dBc/u221aHz, 1 kHz offset, u22123 dBFS

Description

ADC 12BIT 8CH I/Q DEMOD 144CSPBGA
The AD9279 is designed for low cost, low power, small size, and ease of use for medical ultrasound and automotive radar. It contains eight channels of a variable gain amplifier (VGA) with a low noise preamplifier (LNA), an antialiasing filter (AAF), an analog-to-digital converter (ADC), and an I/Q demodulator with programmable phase rotation. Each channel features a variable gain range of 45 dB, a fully differential signal path, an active input preamplifier termination, and a maximum gain of up to 52 dB. The channel is optimized for high 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. Assuming a 15 MHz noise bandwidth (NBW) and a 21.3 dB LNA gain, the LNA input SNR is roughly 94 dB. In CW Doppler mode, each LNA output drives an I/Q demod- ulator that has independently programmable phase rotation with 16 phase settings. Power-down of individual channels is supported to increase battery life for portable applications. Standby mode allows quick power-up for power cycling. In CW Doppler operation, the VGA, AAF, and ADC are powered down. The ADC contains several features designed to maximize flexibility and minimize system cost, such as a programmable clock, data alignment, and programmable digital test pattern generation. The digital test patterns include built-in fixed patterns, built-in pseudo random patterns, and custom user-defined test patterns entered via the serial port interface.

Specifications

Resolution (Bits):
12bit
Sampling Rate:
80MSPS
Input Channel Type:
Single Ended
Data Interface:
SPI
Supply Voltage Type:
Single
Supply Voltage Min:
1.7V
Supply Voltage Max:
1.9V
ADC / DAC Case Style:
CSPBGA
No. of Pins:
144Pins
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 3 - 168 hours
SVHC:
No SVHC (07-Jul-2017)
Operating Temperature Range:
-40°C to +85°C
Supply Current:
328mA
Supply Voltage Range:
1.7V to 1.9V
Supply Voltage Range - Analogue:
1.7V to 1.9V

Alternate Descriptions

Richardson RFPD

CONVERTER - ADC