Datasheet > AD9271_17

AD9271_17

更新时间： 2024-10-29 01:21:35

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
61页	1826K
描述
Octal LNA/VGA/AAF/ADC and Crosspoint Switch

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中文翻译

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数据手册

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AD9271_17 数据手册

Octal LNA/VGA/AAF/ADC

and Crosspoint Switch

AD9271

FUNCTIONAL BLOCK DIAGRAM

FEATURES

8 channels of LNA, VGA, AAF, and ADC

Low noise preamplifier (LNA)

Input-referred noise = 1.1 nV/√Hz @ 5 MHz typical,

gain = 18 dB

LOSW-A

LO-A

AD9271

SPI-programmable gain = 14 dB/15.6 dB/18 dB

Single-ended input; V_INmaximum = 400 mV p-p/

333 mV p-p/250 mV p-p

Dual-mode active input impedance matching

Bandwidth (BW) > 70 MHz

Full-scale (FS) output = 2 V p-p differential

Variable gain amplifier (VGA)

Gain range = −6 dB to +24 dB

LI-A

12-BIT

ADC

DOUTA+

DOUTA–

SERIAL

LVDS

LNA

VGA

LG-A

AAF

LOSW-B

LO-B

LI-B

12-BIT

ADC

DOUTB+

DOUTB–

SERIAL

LVDS

LG-B

LOSW-C

LO-C

LI-C

12-BIT

ADC

DOUTC+

DOUTC–

SERIAL

LVDS

VGA

LG-C

Linear-in-dB gain control

LOSW-D

LO-D

Antialiasing filter (AAF)

3^rd-order Butterworth cutoff

LI-D

12-BIT

ADC

DOUTD+

DOUTD–

SERIAL

LVDS

LG-D

Programmable from 8 MHz to 18 MHz

Analog-to-digital converter (ADC)

12 bits at 10 MSPS to 50 MSPS

SNR = 70 dB

SFDR = 80 dB

LOSW-E

LO-E

LI-E

DOUTE+

DOUTE–

12-BIT

ADC

SERIAL

LVDS

VGA

LG-E

LOSW-F

LO-F

Serial LVDS (ANSI-644, IEEE 1596.3 reduced range link)

Data and frame clock outputs

LI-F

DOUTF+

DOUTF–

12-BIT

ADC

SERIAL

LVDS

VGA

LG-F

Includes crosspoint switch to support

continuous wave (CW) Doppler

Low power, 150 mW per channel at 12 bits/40 MSPS (TGC)

90 mW per channel in CW Doppler

Single 1.8 V supply (3.3 V supply for CW Doppler output bias)

Flexible power-down modes

LOSW-G

LO-G

LI-G

DOUTG+

DOUTG–

12-BIT

ADC

SERIAL

LVDS

LG-G

LOSW-H

LO-H

LI-H

12-BIT

ADC

DOUTH+

DOUTH–

SERIAL

LVDS

VGA

LG-H

Overload recovery in <10 ns

Fast recovery from low power standby mode, <2 μs

100-lead TQFP

FCO+

FCO–

DCO+

DCO–

REFERENCE

APPLICATIONS

Medical imaging/ultrasound

Automotive radar

SWITCH

ARRAY

GENERAL DESCRIPTION

The AD9271 is designed for low cost, low power, small size,

and ease of use. It contains eight channels of a variable gain amp-

lifier (VGA) with low noise preamplifier (LNA); an antialiasing

filter (AAF); and a 12-bit, 10 MSPS to 50 MSPS analog-to-digital

converter (ADC).

Figure 1.

The LNA has a single-ended-to-differential gain that is selectable

through the SPI. The LNA input noise is typically 1.2 nV/√Hz,

and the combined input-referred noise of the entire channel

is 1.4 nV/√Hz at maximum gain. Assuming a 15 MHz noise

bandwidth (NBW) and a 15.6 dB LNA gain, the input SNR is

roughly 86 dB. In CW Doppler mode, the LNA output drives a

transconductance amp that is switched through an 8 × 6

differential crosspoint switch. The switch is programmable

through the SPI.

Each channel features a variable gain range of 30 dB, a fully

differential signal path, an active input preamplifier termination, a

maximum gain of up to 40 dB, and an ADC with a conversion

rate of up to 50 MSPS. The channel is optimized for dynamic

performance and low power in applications where a small

package size is critical.

Rev. B

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registeredtrademarks arethe property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

www.analog.com

12 3 4 5 6 7...61

中文翻译

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与AD9271_17相关器件

型号	品牌	获取价格	描述	数据表
AD9271-50EBZ	ADI	获取价格	Octal LNA/VGA/AAF/ADC and Crosspoint Switch
AD9271BSVZ-25	ADI	获取价格	Octal LNA/VGA/AAF/ADC and Crosspoint Switch
AD9271BSVZ-40	ADI	获取价格	Octal LNA/VGA/AAF/ADC and Crosspoint Switch
AD9271BSVZ-50	ADI	获取价格	Octal LNA/VGA/AAF/ADC and Crosspoint Switch
AD9271BSVZRL-25	ADI	获取价格	Octal LNA/VGA/AAF/ADC and Crosspoint Switch
AD9271BSVZRL-40	ADI	获取价格	Octal LNA/VGA/AAF/ADC and Crosspoint Switch
AD9271BSVZRL-50	ADI	获取价格	Octal LNA/VGA/AAF/ADC and Crosspoint Switch
AD9271BSVZRL7-25	ADI	获取价格	Octal LNA/VGA/AAF/ADC and Crosspoint Switch
AD9271BSVZRL7-40	ADI	获取价格	Octal LNA/VGA/AAF/ADC and Crosspoint Switch
AD9271BSVZRL7-50	ADI	获取价格	Octal LNA/VGA/AAF/ADC and Crosspoint Switch

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