Datasheet > AD8372ACPZ-WP

AD8372ACPZ-WP

更新时间： 2024-09-26 01:12:51

品牌	Logo	应用领域
亚德诺 - ADI		信息通信管理
页数	文件大小	规格书
16页	751K
描述
Programmable Dual VGA

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数据手册

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AD8372ACPZ-WP 数据手册

41 dB Range, 1 dB Step Size,

Programmable Dual VGA

Data Sheet

AD8372

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Dual independent digitally controlled VGA

Differential input and output

ENB1

REF1

AD8372

IPC1

INC1

OPC1

ONC1

150 Ω differential input

Open-collector differential output

7.8 dB noise figure to 100 MHz @ maximum gain

HD2/HD3 better than 77 dBc for 1 V p-p differential output

−3 dB bandwidth of 130 MHz

CHANNEL 1

POSTAMP

RXT1

CLK2

SDO2

SDI2

CLK1

SDO1

SDI1

REGISTERS

AND

GAIN DECODER

LCH1

41 dB gain range

LCH2

1 dB step size 0.2 dB

RXT2

IPC2

Serial 8-bit bidirectional SPI control interface

Wide input dynamic range

OPC2

ONC2

REF2

INC2

Pin-programmable output stage

Power-down feature

CHANNEL 2

POSTAMP

ENB2

Figure 1.

Single 5 V supply: 106 mA per channel

32-lead LFCSP, 5 mm × 5 mm package

APPLICATIONS

Differential ADC drivers

CMTS upstream direct sampling receivers

CATV modem signal scaling

Generic RF/IF gain stages

Single-ended-to-differential conversion

GENERAL DESCRIPTION

The AD8372 is a dual, digitally controlled, variable gain

amplifier (VGA) that provides precise gain control, high IP3,

and low noise figure. The excellent distortion performance and

moderate signal bandwidth make the AD8372 a suitable

gain control device for a variety of multichannel receiver

applications.

setting resistors can be adjusted to manipulate the gain and

distortion performance of each channel. This is a flexible

feature in applications where it is desirable to trade off distortion

performance for lower power consumption.

The AD8372 is powered on by applying the appropriate logic

level to the ENB1, ENB2 pins. When powered down, the AD8372

consumes less than 2.6 mA and offers excellent input-to-output

isolation. The gain setting is preserved when powered down.

For wide input dynamic range applications, the AD8372

provides a broad 41 dB gain range. The gain is programmed

through a bidirectional 4-pin serial interface. The serial inter-

face consists of a clock, latch, data input, and data output lines

for each channel.

Fabricated on an Analog Devices, Inc., high frequency BiCMOS

process, the AD8372 provides precise gain adjustment capabilities

with good distortion performance. The quiescent current of the

AD8372 is typically 106 mA per channel. The AD8372 amplifier

comes in a compact, thermally enhanced 5 mm × 5 mm 32-lead

LFCSP package and operates over the temperature range of

−40°C to +85°C.

The AD8372 provides the ability to set the transconductance of

the output stage using a single external resistor. The RXT1 and

RXT2 pins provide a band gap derived stable reference voltage

of 1.56 V. Typically 2.0 kΩ shunt resistors to ground are used to

set the maximum gain to a nominal value of 31 dB. The current

Rev. C

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

rights of third parties that may result from its use. Specifications subject tochange 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.

Technical Support

www.analog.com

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与AD8372ACPZ-WP相关器件

型号	品牌	获取价格	描述	数据表
AD8372ACPZ-WP1	ADI	获取价格	41 dB Range, 1 dB Step Size, Programmable Dual VGA
AD8372-EVALZ	ADI	获取价格	Programmable Dual VGA
AD8372-EVALZ1	ADI	获取价格	41 dB Range, 1 dB Step Size, Programmable Dual VGA
AD8375	ADI	获取价格	24dB Range, 1dB Step Size Programmable VGA
AD8375_1	ADI	获取价格	Ultralow Distortion IF VGA
AD8375ACPZ-R7	ADI	获取价格	Ultralow Distortion IF VGA
AD8375ACPZ-REEL7	ADI	获取价格	24dB Range, 1dB Step Size Programmable VGA
AD8375ACPZ-WP	ADI	获取价格	24dB Range, 1dB Step Size Programmable VGA
AD8375-EVALZ	ADI	获取价格	24dB Range, 1dB Step Size Programmable VGA
AD8376	ADI	获取价格	Ultra Low Distortion IF Dual VGA

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