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AD8330ARQZ-R7

更新时间： 2024-11-21 03:35:59

品牌	Logo	应用领域
亚德诺 - ADI		消费电路商用集成电路放大器光电二极管 PC
页数	文件大小	规格书
32页	751K
描述
Low Cost DC to 150 MHz Variable Gain Amplifier

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替代型号

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AD8330ARQZ-R7 数据手册

Low Cost DC to 150 MHz

Variable Gain Amplifier

AD8330

FEATURES

Fully differential signal path and also used

with single-sided signals

FUNCTIONAL BLOCK DIAGRAM

ENBL

OFST

VPOS

CNTR

Inputs from 0.3 mV to 1 V rms, rail-to-rail outputs

Differential R_IN= 1 kΩ; R_OUT(each output) 75 Ω

Automatic offset compensation (optional)

Linear-in-dB and linear-in-magnitude gain modes

0 dB to 50 dB, for 0 V < V_DBS< 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 < V_MAG< 5 V

Constant bandwidth: 150 MHz at all gains

Low noise: 5 nV/√Hz typical at maximum gain

Low distortion: ≤−62 dBc typical

Low power: 20 mA typical at V_Sof 2.7 V to 6 V

Available in a space-saving, 3 mm × 3 mm LFCSP package

VPSI

VPSO 12

CM AND

OFFSET

BIAS AND V

REF

CONTROL

OPHI

INHI

OUTPUT

STAGES

VGA CORE

OPLO

INLO

MODE

VDBS

CMOP

VMAG

OUTPUT

CONTROL

GAIN INTERFACE

CMGN

COMM

Figure 1.

APPLICATIONS

Pre-ADC signal conditioning

75 Ω cable driving adjust

AGC amplifiers

Using VMAG, the basic 0 dB to 50 dB range can be repositioned

to any value from ±0 dB higher (that is, ±0 dB to 70 dB) to at least

30 dB lower (that is, –30 dB to +±0 dB) to suit the application,

thereby 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, over both the basic

50 dB linear-in-dB 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.

GENERAL DESCRIPTION

The AD8330¹is a wideband variable gain amplifier for 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 ±± V, allowing sine wave operation at

1 V rms with generous headroom. The output pins can drive

single-sided loads essentially rail-to-rail. The differential output

resistance is 150 Ω. The output swing is a linear function of the

voltage applied to the VMAG pin that internally defaults to 0.5 V

providing a peak output of ±± V. This can be raised to 10 V p-p,

limited by the supply voltage.

An external capacitor at Pin OFST sets the high-pass corner of

an offset reduction loop, whose frequency can 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 V_Sto accommodate a wide variety of requirements. By default,

the two outputs are positioned at the midpoint of the supply, V_S/±.

Other features, such as two levels of power-down (fully off and a

hibernate mode), further extend the practical value of this excep-

tionally versatile VGA.

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 V—a slope of 30 mV dB.

The gain linearity is typically within ±0.1 dB. By changing the

logic level on Pin MODE, the gain decreases over the same range,

with an opposite slope. A second gain control port is provided at

the VMAG pin 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.

The AD8330 is available in 16-lead LFCSP and 16-lead QSOP

packages and is specified for operation from −40°C to +85°C.

Protected by U.S. Patent No. 5,969,657; other patents pending.

Rev. C

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

Fax: 781.461.3113

www.analog.com

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中文翻译

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AD8330ARQZ-R7 替代型号

型号	品牌	替代类型	描述	数据表
AD8330ARQ-REEL	ADI	完全替代	Low Cost DC-150 MHz Variable Gain Amplifier
AD8330ARQZ-RL	ADI	类似代替	Low Cost DC to 150 MHz Variable Gain Amplifier
AD8330ARQZ	ADI	类似代替	Low Cost DC to 150 MHz Variable Gain Amplifier

与AD8330ARQZ-R7相关器件

型号	品牌	获取价格	描述	数据表
AD8330ARQZ-REEL	ADI	获取价格	IC SPECIALTY CONSUMER CIRCUIT, PDSO16, LEAD FREE, MO-137AB, QSOP-16, Consumer IC:Other
AD8330ARQZ-REEL7	ADI	获取价格	IC SPECIALTY CONSUMER CIRCUIT, PDSO16, LEAD FREE, MO-137AB, QSOP-16, Consumer IC:Other
AD8330ARQZ-RL	ADI	获取价格	Low Cost DC to 150 MHz Variable Gain Amplifier
AD8330-EVAL	ADI	获取价格	Low Cost DC to 150 MHz Variable Gain Amplifier
AD8330-EVALZ	ADI	获取价格	Low Cost, DC to 150 MHz Variable Gain Amplifier
AD8331	ADI	获取价格	Ultralow Noise VGAs with Preamplifier and Programmable RIN
AD8331_06	ADI	获取价格	Ultralow Noise VGAs with Preamplifier and Programmable RIN
AD8331_10	ADI	获取价格	Ultralow Noise VGAs with Preamplifier and Programmable RIN
AD8331_15	ADI	获取价格	Ultralow Noise VGAs with Preamplifier and Programmable R
AD8331ARQ	ADI	获取价格	Ultralow Noise VGAs with Preamplifier and Programmable RIN

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