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ADL5310ACP-R2

更新时间： 2024-11-07 03:17:51

品牌	Logo	应用领域
亚德诺 - ADI		转换器模拟计算功能信号电路放大器
页数	文件大小	规格书
20页	749K
描述
120 dB Range (3 nA to 3 mA) Dual Logarithmic Converter

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ADL5310ACP-R2 数据手册

120 dB Range (3 nA to 3 mA)

Dual Logarithmic Converter

ADL5310

FUNCTIONAL BLOCK DIAGRAM

FEATURES

2 independent channels optimized for photodiode

665kΩ

VREF

VRDZ

OUT1

VSUM

IRF1

interfacing

6-decade input dynamic range

OUT1

COMM

Law conformance 0.3 dB from 3 nA to 3 mA

Temperature-stable logarithmic outputs

Nominal slope 10 mV/dB (200 mV/dec), externally scalable

Intercepts may be independently set by external resistors

User-configurable output buffer amplifiers

Single- or dual-supply operation

SCL1

BIN1

BIAS

6.69kΩ

LOG

TEMPERATURE

COMPENSATION

VNEG

LOG1

451Ω

14.2kΩ

Space-efficient, 24-lead 4 mm × 4 mm LFCSP

Low power: < 10 mA quiescent current

INP1

IRF2

PD1

OUT2

REFERENCE

GENERATOR

0.5V

2.5V

OUT2

20kΩ

COMM

80kΩ

APPLICATIONS

Gain and absorbance measurements

Multichannel power monitoring

General-purpose baseband log compression

SCL2

BIN2

BIAS

14.2kΩ

LOG

TEMPERATURE

VNEG

COMPENSATION

LOG2

451Ω

PRODUCT DESCRIPTION

6.69kΩ

The ADL5310¹low cost, dual logarithmic amplifier converts

input current over a wide dynamic range to a linear-in-dB

output voltage. It is optimized to determine the optical power

in wide-ranging optical communication system applications,

including control circuitry for lasers, optical switches, atten-

uators, and amplifiers, as well as system monitoring. The device

is equivalent to a dual AD8305 with enhanced dynamic range

(120 dB). While the ADL5310 contains two independent signal

channels with individually configurable transfer function

constants (slope and intercept), internal bias circuitry is shared

between channels for improved power consumption and

channel matching. Dual converters in a single, compact LFCSP

package yield space-efficient solutions for measuring gain or

attenuation across optical elements. Only a single supply is

required; optional dual-supply operation offers added flexibility.

INP2

PD2

COMM

VSUM

665kΩ

VREF

Figure 1.

The logarithmic slope is set to 10 mV/dB (200 mV/decade)

nominal and can be modified using external resistors and the

independent buffer amplifiers. The logarithmic intercepts for

each channel are defined by the individual reference currents,

which are set to 3 μA nominal for maximum input range by

connecting ±±5 kΩ resistors between the 2.5 V VREF pins and

the IRF1 and IRF2 inputs. Tying VRDZ to VREF effectively sets

the x-intercept four decades below the reference current—

typically 300 pA for a 3 µA reference.

The ADL5310 employs an optimized translinear structure that

use the accurate logarithmic relationship between a bipolar

transistor’s base emitter voltage and collector current, with

appropriate scaling by precision currents to compensate for the

inherent temperature dependence. Input and reference current

pins sink current ranging from 3 nA to 3 mA (limited to ±±0 dB

between input and reference) into a fixed voltage defined by the

VSUM potential. The VSUM potential is internally set to

500 mV but may be externally grounded for dual-supply opera-

tion, and for additional applications requiring voltage inputs.

The use of individually optimized reference currents may

be valuable when using the ADL5310 for gain or absorbance

measurements where each channel input has a different current-

range requirement. The reference current inputs

are also fully functional dynamic inputs, allowing log ratio

operation with the reference input current as the denominator.

The ADL5310 is specified for operation from –40°C to +85°C.

¹US Patents: 4,604,532, 5,519,308. Other patents pending.

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 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

registered trademarks are the property of their respective owners.

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

Tel: 781.329.4700

Fax: 781.326.8703

www.analog.com

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ADL5310ACP-R2 替代型号

型号	品牌	替代类型	描述	数据表
ADL5310ACPZ-REEL7	ADI	完全替代	120 dB Range (3 nA to 3 mA) Dual Logarithmic Converter
ADL5310ACP-REEL7	ADI	完全替代	120 dB Range (3 nA to 3 mA) Dual Logarithmic Converter
AD8305ACP-REEL7	ADI	功能相似	100 dB Range (10 nA to 1 mA) Logarithmic Converter

与ADL5310ACP-R2相关器件

型号	品牌	获取价格	描述	数据表
ADL5310ACP-REEL7	ADI	获取价格	120 dB Range (3 nA to 3 mA) Dual Logarithmic Converter
ADL5310ACP-WP	ADI	获取价格	暂无描述
ADL5310ACPZ	ADI	获取价格	暂无描述
ADL5310ACPZ-REEL7	ADI	获取价格	120 dB Range (3 nA to 3 mA) Dual Logarithmic Converter
ADL5310-EVAL	ADI	获取价格	120 dB Range (3 nA to 3 mA) Dual Logarithmic Converter
ADL5310-EVALZ	ADI	获取价格	Dual Logarithmic Converter
ADL5315	ADI	获取价格	Precision Wide Range (3 nA to 3 mA) High-Side Current Mirror
ADL5315ACPZ-R7	ADI	获取价格	Precision Wide Range (3 nA to 3 mA) High-Side Current Mirror
ADL5315ACPZ-WP	ADI	获取价格	Precision Wide Range (3 nA to 3 mA) High-Side Current Mirror
ADL5315-EVAL	ADI	获取价格	Precision Wide Range (3 nA to 3 mA) High-Side Current Mirror

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