DA-2018S40TA [AAC]

Detector Log Video Amplifiers (DLVA); 检测日志视频放大器（ DLVA ）


型号：	DA-2018S40TA
厂家：	AMERICAN ACCURATE COMPONENTS, INC.
描述：	Detector Log Video Amplifiers (DLVA) 检测日志视频放大器（ DLVA ）视频放大器
文件：	总4页 (文件大小：174K)
中文：	中文翻译
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Detector Log Video Amplifiers (DLVA)

The content of this specification may change without notification7/01/09

Features

DLVA

Advanced Microwave Hybrid Integrated

Circuits Technology

Detector Log Video Amplifiers (DLVA)

Frequency Range from 0.5 to 18GHz

Superior Log Linearity

Wide Dynamic Range

Wide Bandwidth

There are three basic typesof logarithmic amplifiers,

Detector-Log Video Amplifiers (DLVAs)

Successive Detection Logarithmic

Low Current Consumption

DC-Coupled DLVAs

Amplifiers True Log Amplifiers (TLAs)

High Performance

A detector log video amplifier (DLVA) is a type of

logarithmic amplifier in which the envelope of the

input RF signal is detected by a standard "linear"

diodedetector. The output of the detector is

compressed in the video amplifier section, making

input/output relationship similar to a logarithmic

conversion. In general, the DLVA offers the

High Reliability

High Repeatability

Compact Size And Light Weight

Custom Design Available

advantage of operating over the widest frequency

range, but at the sacrifice of dynamic range.

Applications

Radar Systems

Limited by the detecting range of square law of the

input diode detector, typical dynamic range for a

DLVA is approximately 40 dB.

Navigation Systems

Laboratory Measurement And Test Equipment

Telecommunications And Data Communications

Military And Instrumentation Systems

Other Commercial Applications

In quite a lot of usages, two log cascades are put in

parallel with a RF amplifier incorporated in time of

detection of the log cascade, so that the dynamic

range can be extended to approx.70dB.

The detected video sections of a DLVA can either be

AC coupled, DC coupled, or pseudo DC coupled.

Each has its advantages, depending upon the application

(i.e., CW operation, temperature compensation, etc.).

The basic configuration of a DLVA is simply a

detector diode to convert the RF energy into a DC

voltage followed by a video amplifier with a

logarithmic transfer function. The combination results

in a device which compresses a large RF signal

range into a narrow range of video voltage.

We have put considerable effort into designing a

DC coupled DLVA with very low baseline drift.

Employing a tunnel diode based detector circuit

coupled with a very stable DLVA, high-speed

miniature DC DLVA with good recovery

characteristics is available.

188 Technology Drive, Unit H, Irvine, CA 92618

Tel: 949-453-9888 Fax: 949-453-8889 Email: sales@aacix.com

American Accurate Components, Inc.

Detector Log Video Amplifiers (DLVA)

The content of this specification may change without notification7/01/09

DLVA

Coaxial

0.5 to 18GHz

Freq. Range

TSS

(dBm)

Typ

Linearity

(dB)

Max

Dynamic

Range

(dBm)

Log Linearity

(dB)

VSWR

P/N

Case

(GHz)

Max

DA-0520S41NA

0.5 - 2

-41

±2

-39 - +5

±0.7

2.0:1

DL1

DA-0560S41NB

DA-0518S42NA

DA-2040S42NA

DA-2040S42NB

DA-2080S41NA

DA-2018S41NA

DA-4080S42NA

DA-6012S41NA

DA-6012S42NB

DA-6018S42NA

DA-6018S42NB

DA-8012S41NA

DA-8018S41NA

DA-8018S41NB

DA-1218S42NA

DA-1218S42NB

DA-0520D72N

DA-2060D72N

DA-4080D72N

DA-2018D68N

DA-6012D72N

DA-6018D72N

DA-8018D72N

DA-1218D72N

0.5 - 6

0.5 - 2

2 - 4

-41

-42

-41

-42

-41

-42

-41

-42

-72

-68

-73

-72

±2

-39 - +5

-70 - +5

-65 - +5

-70 - +5

±1.0

±0.7

±1.0

±0.7

±0.5

±1.0

±0.5

±1.0

±0.5

±1.0

±0.5

±1.0

2.5:1

3.5:1

2.0:1

2.5:1

3.5:1

2.5:1

3.0:1

2.5:1

3.5:1

2.5:1

2.2

DL1

DL3

±2

2 - 4

±2

2 - 8

±2

2 - 18

4 - 8

±2.5

±2

6 - 12

6 - 18

8 - 12

8 - 18

12 - 18

0.5 - 2

2 - 6

±2

2.2

4 - 8

±2

2.2

2 - 18

6 - 12

6 - 18

8 - 18

12 - 18

±2.5

±2

2.5

2.2

±2

2.3

±2

2.2

±2

2.2

Rise Time: 29ns(Typ)

Delay Time: <30ns

Log Slope: 50mV/dB

General Specifications

Maximum CW Input(No Damage):

Recovery Time: 500ns(@+15dB)

≤

+20dBm

Power Supply:

12V DC

Notes:

1. Operating Temperature

2. Custom Designs Available

-55 ^OC to +85 ^OC. Storage Temperature -60 ^OC to +90 ^OC.

188 Technology Drive, Unit H, Irvine, CA 92618

Tel: 949-453-9888 Fax: 949-453-8889 Email: sales@aacix.com

American Accurate Components, Inc.

Detector Log Video Amplifiers (DLVA)

The content of this specification may change without notification7/01/09

DLVA

Coaxial

0.5 to 18GHz

Continued

Freq. Range

TSS

(dBm)

Typ

Linearity

(dB)

Max

Dynamic

Range

(dBm)

Log Linearity

(dB)

VSWR

P/N

Case

(GHz)

Max

DA-0520S42TA

0.5 - 2

-42

±2

-39 - +5

±0.7

2.0:1

DL1

DA-0560S42TB

DA-0518S42TA

DA-2040S42TA

DA-2040S42TB

DA-2080S41TA

DA-2018S40TA

DA-4080S41TA

DA-6012S41TA

DA-6012S41TB

DA-6018S41TA

DA-6018S41TB

DA-8012S41TA

DA-8018S40TA

DA-8018S41TB

DA-1218S42TA

DA-1218S42TB

0.5 - 6

0.5 - 18

2 - 4

-42

-41

-40

-41

-40

-41

-42

±2

-39 - +5

±1.0

±0.7

±1.0

±0.7

±0.5

±1.0

±0.5

±1.0

±0.5

±1.0

±0.5

±1.0

2.5:1

3.5:1

2.0:1

2.5:1

3.5:1

2.5:1

3.0:1

2.5:1

3.5:1

2.5:1

DL1

±2

2 - 4

±2

2 - 8

±2

2 - 18

4 - 8

±2.5

6 - 12

6 - 18

8 - 12

8 - 18

12 - 18

Rise Time: 29ns(Typ)

Delay Time: <30ns

Log Slope: 50mV/dB

General Specifications

Maximum CW Input(No Damage):

Recovery Time: 500ns(@+15dB)

≤

+20dBm

Power Supply:

12V DC

Notes:

1. Operating Temperature : -55 ^OC to +85 ^OC. Storage Temperature : -60 ^OC to +90 ^OC.

2. Custom Designs Available

188 Technology Drive, Unit H, Irvine, CA 92618

Tel: 949-453-9888 Fax: 949-453-8889 Email: sales@aacix.com

American Accurate Components, Inc.

Detector Log Video Amplifiers (DLVA)

The content of this specification may change without notification7/01/09

DLV

Outline Drawings (Size: mm)

Terms and Definitions

Operational Bandwidth is the range of input

frequency over which the technical speci-

fications of the amplifier are met.

Log Slope is the straight line slope of the

input/output transfer characteristics of the

detected signal over the dynamic range. The

log slope is expressed in millivolts per dB of a

best-fit straight line as derived by a least-

squares approximation of all data points

Log Linearity is the maximum deviation in dB

of all measured points from the calculated

best-fit straight line. The dynamic range can

be as high as 75dB, depending

upon

Dynamic Range is the range of the input

signals in dB over which the output linearity

requirement is met.

Maximum Input Power is the maximum

power that the logarithmic amplifier can

withstand without damage.

DC offset is the residual DC output of

logarithmic amplifier when the input is

terminated with 50ohm.

DL1

Tangential Signal Sensitivity (TSS) defines

the input level that results in an output signal-

to-noise ratio of 6 dB. TSS, which is directly

related to noise figure and bandwidth, aids in

defining the lower limit of the input dynamic

range of a logarithmic amplifier. TSS is also a

convenient way of specifying a logarithmic

amplifier's noise performance, since noise

Rise Time is defined as the time difference

between the 10% point and 90% point on the

rising leading edge of the output video pulse.

Recovery Time for a logarithmic amplifier is

defined in many ways by system engineers.

The most common is to use multiple pulses

and characterize the time between the 90%

point on the trailing edge of the first pulse and

the 10% point on the leading edge of the

DL3

188 Technology Drive, Unit H, Irvine, CA 92618

Tel: 949-453-9888 Fax: 949-453-8889 Email: sales@aacix.com

American Accurate Components, Inc.

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