AD8310-EVAL

更新时间： 2024-01-01 08:20:54

品牌	Logo	应用领域
亚德诺 - ADI		放大器
页数	文件大小	规格书
16页	326K
描述
Fast, Voltage-Out DC-440 MHz 95 dB Logarithmic Amplifier

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AD8310-EVAL 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：	TSSOP
包装说明：	TSSOP, TSSOP8,.19	针数：	8
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.4
模拟集成电路 - 其他类型：	LOG OR ANTILOG AMPLIFIER	标称带宽：	440 MHz
JESD-30 代码：	S-PDSO-G8	JESD-609代码：	e3
长度：	3 mm	湿度敏感等级：	1
功能数量：	1	端子数量：	8
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：	TSSOP
封装等效代码：	TSSOP8,.19	封装形状：	SQUARE
封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	峰值回流温度（摄氏度）：	NOT SPECIFIED
电源：	5 V	认证状态：	Not Qualified
座面最大高度：	1.1 mm	子类别：	Analog Computational Functions
最大供电电流 (Isup)：	10 mA	最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	2.7 V	标称供电电压 (Vsup)：	5 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：	0.65 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	3 mm	Base Number Matches：	1

AD8310-EVAL 数据手册

Fast, Voltage-Out DC-440 MHz

95 dB Logarithmic Ampliﬁer

AD8310

FUNCTIONAL BLOCK DIAGRAM

FEATURES

Multistage Demodulating Logarithmic Ampliﬁer

Voltage Output, Rise-Time <15 ns

AD8310

VPOS

ENBL

BFIN

BANDGAP REFERENCE

AND BIASING

High-Current Capacity: 25 mA into Grounded R_L

95 dB Dynamic Range: –91 dBV to +4 dBV

Single Supply of 2.7 V Min at 8 mA Typ

DC-440 MHz Operation, ؎0.4 dB Linearity

Slope of 24 mV/dB, Intercept of –108 dBV

Highly Stable Scaling over Temperature

Fully Differential DC-Coupled Signal Path

100 ns Power-Up Time, 1 ␮A Sleep Current

8mA

ENABLE

SUPPLY

SIX 14.3dB 900MHz

AMPLIFIER STAGES

BUFFER

INPUT

INHI

+INPUT

–INPUT

1.0k⍀

MIRROR

INLO

2␮A

/dB

–

VOUT

OUTPUT

3k⍀

COMM

NINE DETECTOR CELLS

SPACED 14.3dB

3k⍀

1k⍀

COMMON

COMM

OFLT

INPUT-OFFSET

COMPENSATION LOOP

OFFSET

FILTER

APPLICATIONS

33pF

COMM

Conversion of Signal Level to Decibel Form

Transmitter Antenna Power Measurement

Receiver Signal Strength Indication (RSSI)

Low-Cost Radar and Sonar Signal-Processing

Network and Spectrum Analyzers

Signal-Level Determination Down to 20 Hz

True-Decibel AC Mode for Multimeters

PRODUCT DESCRIPTION

sensitivity of to –78 dBm to +17 dBm. The logarithmic linearity

is typically within ±0.4 dB up to 100 MHz over the central

portion of the range, but is somewhat greater at 440 MHz. There

is no minimum frequency limit; the AD8310 may be used down

to low audio frequencies. Special ﬁltering features are provided

to support this wide range.

The AD8310 is a complete, dc-440 MHz demodulating

logarithmic ampliﬁer (log amp) with a very fast voltage-mode

output capable of driving up to 25 mA into a grounded load in

under 15 ns. It uses the progressive compression (successive

detection) technique to provide a dynamic range of up to 95 dB

to ±3 dB law-conformance, or 90 dB to a ±1 dB error bound up

to 100 MHz. It is extremely stable and easy to use, requiring no

signiﬁcant external components. A single supply voltage of 2.7 V

to 5.5 V at 8 mA is needed, corresponding to a power consump-

tion of only 24 mW at 3 V. A fast-acting CMOS-compatible

enable pin is provided.

The output voltage runs from a noise-limited lower boundary of

400 mV to an upper limit within 200 mV of the supply voltage

for light loads. The slope and intercept can be readily altered

using external resistors. The output is tolerant of a wide variety

of load conditions and is stable with capacitive loads of 100 pF.

The AD8310 provides a unique combination of low cost, small

size, small power consumption, high accuracy and stability, high

dynamic range, a frequency range encompassing audio to UHF,

fast response time and good load-driving capabilities, making this

product useful in numerous applications requiring the reduction

of a signal to its decibel equivalent.

Each of the six cascaded ampliﬁer/limiter cells has a small-signal

gain of 14.3 dB, with a –3 dB bandwidth of 900 MHz. A total

of nine detector cells are used, to provide a dynamic range that

extends from –91 dBV (where 0 dBV is deﬁned as the ampli-

tude of a 1 V rms sine wave) that is, an amplitude of about

±40 µV, up to +4 dBV (or ±2.2 V). The demodulated output

is accurately scaled, with a log slope of 24 mV/dB and an intercept

of –108 dBV; the scaling parameters are supply- and temperature-

independent. The fully-differential input offers a moderately

high impedance (1 kΩ in parallel with about 1 pF). A simple

network can match the input to 50 Ω and provide a power

The AD8310 is available in the industrial temperature range of

–40°C to +85°C, in an 8-lead Mini_SO package.

REV. A

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

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

World Wide Web Site: http://www.analog.com

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