Datasheet > AD8331TRQZ-EP

AD8331TRQZ-EP

更新时间： 2024-11-21 19:34:59

品牌	Logo	应用领域
亚德诺 - ADI		光电二极管商用集成电路
页数	文件大小	规格书
9页	209K
描述
Single VGA with Ultralow Noise Preamplifier and Programmable RIN

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AD8331TRQZ-EP 数据手册

Ultralow Noise VGA with

Preamplifier and Programmable R_IN

Enhanced Product

AD8331-EP

FEATURES

FUNCTIONAL BLOCK DIAGRAM

LON LOP VIP VIN

VCM

HILO

Ultralow noise preamplifier (preamp)

Input voltage noise: 0.74 nV/√Hz typical

Input current noise: 2.5 pA/√Hz typical

−3 dB small signal bandwidth: 120 MHz typical

Low power dissipation: 125 mW typical

Wide gain range with programmable postamp

−4.5 dB to +43.5 dB in low gain mode

7.5 dB to 55.5 dB in high gain mode

Low output-referred noise: 48 nV/√Hz typical

Active input impedance matching

3.5dB OR 15.5dB

MID

LNA

19dB

–

ATTENUATOR

VOH

VOL

48dB

21dB

INH

CLAMP

LMD

GAIN

VCM

BIAS

VGA BIAS AND

INTERPOLATOR

RCLMP

CONTROL

INTERFACE

AD8331-EP

ENBx GAIN

Optimized for 10-bit/12-bit ADCs

Figure 1.

Selectable output clamping level

Single 5 V supply operation

ENHANCED PRODUCT FEATURES

Supports defense and aerospace applications

(AQEC standard)

Extended industrial temperature range: −55°C to +105°C

Controlled manufacturing baseline

1 assembly/test site

1 fabrication site

Product change notification

Qualification data available on request

The 48 dB gain range of the VGA makes this device suitable for

a variety of applications. Excellent bandwidth uniformity is

maintained across the entire range. The gain control interface

provides precise linear in dB scaling of 50 dB/V for control

voltages between 100 mV and 0.95 V. Factory trim ensures

excellent part to part gain matching.

APPLICATIONS

Radars

Ultrasound and sonar time-gain controls

High performance automatic gain control (AGC) systems

In-phase quadrature (I/Q) signal processing

High speed ADC drivers

Differential signal paths result in superb second- and third-

order distortion performance and low crosstalk.

The low output referred noise of the VGA is advantageous in

driving high speed differential analog-to-digital converters

(ADCs). The gain of the post amplifier (PA) can be pin selected

to 3.5 dB or 15.5 dB to optimize gain range and output noise for

12-bit or 10-bit converter applications. The output can be limited to

a user selected clamping level, preventing input overload to a

subsequent ADC. An external resistor adjusts the clamping level.

GENERAL DESCRIPTION

The AD8331-EP is a single-channel, ultralow noise, linear in dB,

variable gain amplifier (VGA). Optimized for ultrasound

systems, the device is usable as a low noise variable gain element

at frequencies up to 120 MHz.

Included in the channel are an ultralow noise preamp (LNA), an

X-AMP® VGA with 48 dB of gain range, and a selectable gain

postamp with adjustable output limiting. The LNA gain is 19 dB

with a single-ended input and differential outputs. Using a single

resistor, the LNA input impedance can be adjusted to match a

signal source without compromising noise performance.

The operating temperature is specified across the −55°C to

+105°C extended industrial range.

Additional application and technical information can be found

in the AD8331 data sheet.

Rev. 0

Document Feedback

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

rightsof third parties that may result fromits 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 andregisteredtrademarks are the property of their respective owners.

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

Tel: 781.329.4700

Technical Support

www.analog.com

12 3 4 5 6 7...9

中文翻译

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与AD8331TRQZ-EP相关器件

型号	品牌	获取价格	描述	数据表
AD8331TRQZ-EP-R7	ADI	获取价格	Single VGA with Ultralow Noise Preamplifier and Programmable RIN
AD8332	ADI	获取价格	Ultralow Noise VGAs with Preamplifier and Programmable RIN
AD8332_15	ADI	获取价格	Ultralow Noise VGAs with Preamplifier and Programmable R
AD8332ACP-R2	ADI	获取价格	Ultralow Noise VGAs with Preamplifier and Programmable RIN
AD8332ACP-REEL	ADI	获取价格	Ultralow Noise VGAs with Preamplifier and Programmable RIN
AD8332ACP-REEL7	ADI	获取价格	Ultralow Noise VGAs with Preamplifier and Programmable RIN
AD8332ACPZ-R2	ADI	获取价格	Ultralow Noise VGAs with Preamplifier and Programmable RIN
AD8332ACPZ-R7	ADI	获取价格	Ultralow Noise VGAs with Preamplifier and Programmable RIN
AD8332ACPZ-REEL	ADI	获取价格	SPECIALTY CONSUMER CIRCUIT, QCC32, 5 X 5 MM, MO-220VHHD-2, LFCSP-32
AD8332ACPZ-REEL7	ADI	获取价格	SPECIALTY CONSUMER CIRCUIT, QCC32, 5 X 5 MM, MO-220VHHD-2, LFCSP-32

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