GENERAL DESCRIPTION

The AD9276 is designed for low cost, low power, small size, and ease of use. It contains 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.

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

APPLICATIONS

Medical imaging/ultrasound

Automotive radar

AD9276屬于集成電路（IC） > ADC/DAC - 特殊用途。亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的AD9276ADC/DAC - 特殊用途該產(chǎn)品族中的產(chǎn)品可用于模擬和數(shù)字表示的信息轉(zhuǎn)換，適用于特定用例，或集成了通用數(shù)據(jù)轉(zhuǎn)換器中不常見的其他功能。例如針對(duì)超聲或汽車?yán)走_(dá)應(yīng)用集成了低噪聲放大器和可變?cè)鲆婕?jí)的器件、注重音頻和視頻的產(chǎn)品、在段碼式顯示器上集成顯示測(cè)量值功能的器件、集成輸入輸出電氣隔離的器件等。