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參數資料
| 型號： | AD8372ACPZ-R7 |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 1/16頁 |
| 文件大小： | 0K |
| 描述： | IC AMP VGA DIFF DUAL LN 32LFCSP |
| 產品培訓模塊： | Differential Circuit Design Techniques for Communication Applications |
| 標準包裝： | 1 |
| 放大器類型： | 可變增益 |
| 電路數： | 2 |
| 輸出類型： | 差分 |
| -3db帶寬： | 130MHz |
| 電流 - 輸入偏壓： | 400nA |
| 電流 - 電源： | 106mA |
| 電壓 - 電源，單路/雙路(±)： | 4.5 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 32-VFQFN 裸露焊盤，CSP |
| 供應商設備封裝： | 32-LFCSP-VQ（5x5） |
| 包裝： | 標準包裝 |
| 產品目錄頁面： | 775 (CN2011-ZH PDF) |
| 其它名稱： | AD8372ACPZ-R7DKR |
41 dB Range, 1 dB Step Size,
Programmable Dual VGA
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
2007–2011 Analog Devices, Inc. All rights reserved.
FEATURES
Dual independent digitally controlled VGA
Differential input and output
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
41 dB gain range
1 dB step size ± 0.2 dB
Serial 8-bit bidirectional SPI control interface
Wide input dynamic range
Pin-programmable output stage
Power-down feature
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
FUNCTIONAL BLOCK DIAGRAM
ENB1
IPC1
INC1
CLK1
RXT1
LCH1
IPC2
INC2
ENB2
SDI1
SDO1
REF1
OPC1
ONC1
RXT2
SDI2
LCH2
OPC2
REF2
ONC2
SDO2
CLK2
POSTAMP
CHANNEL 1
POSTAMP
CHANNEL 2
REGISTERS
AND
GAIN DECODER
AD8372
07
05
1-
0
01
Figure 1.
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.
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.
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
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.
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.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD8372ACPZ-R71 | 制造商:AD 制造商全稱:Analog Devices 功能描述:41 dB Range, 1 dB Step Size, Programmable Dual VGA |
| AD8372ACPZ-WP | 制造商:Analog Devices 功能描述: 制造商:Rochester Electronics LLC 功能描述: |
| AD8372ACPZ-WP1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:41 dB Range, 1 dB Step Size, Programmable Dual VGA |
| AD8372-EVALZ | 功能描述:AD8372 2 - Dual Channels per IC Variable Gain Amplifier Evaluation Board 制造商:analog devices inc. 系列:- 零件狀態:有效 每 IC 通道數:2 - 雙 放大器類型:可變增益 輸出類型:差分 壓擺率:- -3db 帶寬:130MHz 電流 - 輸出/通道:- 工作溫度:-40°C ~ 85°C 電流 - 電源（主 IC）:106mA 電壓 - 電源，單/雙（±）:4.5 V ~ 5.5 V 板類型:完全填充 所含物品:板 使用的 IC/零件:AD8372 標準包裝:1 |
| AD8372-EVALZ1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:41 dB Range, 1 dB Step Size, Programmable Dual VGA |
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