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AD8330 PDF预览

AD8330

更新时间: 2024-01-26 04:32:40
品牌 Logo 应用领域
亚德诺 - ADI 放大器
页数 文件大小 规格书
28页 634K
描述
Low Cost DC-150 MHz Variable Gain Amplifier

AD8330 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:SSOP
包装说明:SSOP,针数:16
Reach Compliance Code:compliantHTS代码:8542.39.00.01
风险等级:5.02商用集成电路类型:CONSUMER CIRCUIT
JESD-30 代码:R-PDSO-G16JESD-609代码:e3
长度:4.9 mm功能数量:1
端子数量:16最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:SSOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, SHRINK PITCH峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:1.75 mm
最大供电电压 (Vsup):6 V最小供电电压 (Vsup):2.7 V
表面贴装:YES技术:BIPOLAR
温度等级:INDUSTRIAL端子面层:Matte Tin (Sn)
端子形式:GULL WING端子节距:0.635 mm
端子位置:DUAL处于峰值回流温度下的最长时间:40
宽度:3.9 mmBase Number Matches:1

AD8330 数据手册

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Low Cost DC-150 MHz  
Variable Gain Amplifier  
AD8330*  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
Fully Differential Signal Path  
16  
15  
OFST  
14  
13  
May also be Used with Single-Sided Signals  
Inputs from 0.3 mV to 1 V rms, Rail-Rail Outputs  
Differential RIN = 1 k; ROUT (Each Output) 75 ꢀ  
Automatic Offset Compensation (Optional)  
Linear-in-dB and Linear-in-Magnitude Gain Modes  
0 dB to 50 dB, for 0 V < VDBS < 1.5 V (30 mV/dB)  
Inverted Gain Mode: 50 dB to 0 dB at 30 mV/dB  
0.03 to 10 Nominal Gain for 15 mV < VMAG < 5 V  
Constant Bandwidth: 150 MHz at All Gains  
Low Noise: 5 nV/Hz typical at Maximum Gain  
Low Distortion: 62 dBc Typ  
ENBL  
VPOS  
CNTR  
1
2
3
4
12  
11  
VPSO  
VPSI  
CM AND  
BIAS AND V  
REF  
OFFSET  
CONTROL  
INHI  
OPHI  
OUTPUT  
STAGES  
VGA CORE  
INLO  
OPLO  
10  
9
Low Power: 20 mA Typ at VS of 2.7 V 6 V  
Available in Space Saving 3 3 LFCSP Package  
MODE  
OUTPUT  
CONTROL  
GAIN INTERFACE  
CMOP  
VMAG  
APPLICATIONS  
VDBS  
CMGN  
6
COMM  
Pre-ADC Signal Conditioning  
75 Cable Driving Adjust  
AGC Amplifiers  
5
7
8
90  
70  
50  
GENERAL DESCRIPTION  
The AD8330 is a wideband variable-gain amplifier for use in  
applications requiring a fully differential signal path, low noise, well-  
defined gain, and moderately low distortion, from dc to 150 MHz.  
The input pins can also be driven from a single ended source. The  
peak differential input is 2 V, allowing sinewave operation at  
1 V rms with generous headroom. The output pins can optionally  
drive single-sided loads and each swing essentially rail-to-rail.  
The differential output resistance is 150 . The output swing is  
a linear function of the voltage applied to the VMAG pin, which  
internally defaults to 0.5 V, to provide a peak output of 2 V.  
This may be raised to 10 V p-p, limited by the supply voltage.  
30  
10  
–10  
–30  
–50  
100k  
1M  
10M  
FREQUENCY – Hz  
100M  
300M  
The basic gain function is linear-in-dB, controlled by the voltage  
applied to pin VDBS. The gain ranges from 0 dB to 50 dB for  
control voltages between 0 V and 1.5 Va slope of 30 mV dB.  
The gain linearity is typically within 0.1 dB. By changing the  
logic level on pin MODE, the gain will decrease over the same  
range, with opposite slope. A second gain control port is provided  
at pin VMAG and allows the user to vary the numeric gain from a  
factor of 0.03 to 10. All the parameters of the AD8330 have low  
sensitivities to temperature and supply voltages.  
Figure 1. AC Response over the Extended Gain Range  
range, but also when using the linear-in-magnitude function. The  
exceptional stability of the HF response over the gain range is of  
particular value in those VGA applications where it is essential  
to maintain accurate gain law-conformance at high frequencies.  
An external capacitor at pin OFST sets the high-pass corner of an  
offset reduction loop, whose frequency may be as low as 5 Hz.  
When this pin is grounded, the signal path becomes dc-coupled.  
When used to drive an ADC, an external common-mode control  
voltage at pin CNTR can be driven to within 0.5 V of either  
ground or VS to accommodate a wide variety of requirements. By  
default, the two outputs are positioned at the mid point of the  
supply, VS/2. Other features, such as two levels of power-down  
(fully off and a hibernate mode), further extend the practical  
value of this exceptionally versatile VGA.  
Using VMAG, the basic 0 dB to 50 dB range can be repositioned to any  
value from 20 dB higher (that is, 20 dB to 70 dB) to at least 30 dB  
lower (that is, 30 dB to +20 dB) to suit the application, providing  
an unprecedented gain range of over 100 dB. A unique aspect of  
the AD8330 is that its bandwidth and pulse response are essentially  
constant for all gains, not only over the basic 50 dB linear-in-dB  
*Protected by U.S.Patent No. 5,969,657; other patents pending.  
REV. A  
The AD8330 is available in a 16-lead LFCSP and 16-lead QSOP  
Information furnished by Analog Devices is believed to be accurate and  
reliable. However, no responsibility is assumed by Analog Devices for its  
use, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat  
may result from its use. No license is granted by implication or otherwise  
under any patent or patent rights of Analog Devices. Trademarks and  
registered trademarks are the property of their respective companies.  
packages and is specified for operation from 40°C to +85°C.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781/329-4700  
Fax: 781/326-8703  
www.analog.com  
© 2003 Analog Devices, Inc. All rights reserved.  

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