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ADL5315ACPZ-R7

更新时间： 2024-01-16 11:01:23
品牌 Logo 应用领域
亚德诺 - ADI 模拟IC信号电路PC
页数 文件大小 规格书
20页 346K
描述
Precision Wide Range (3 nA to 3 mA) High-Side Current Mirror

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ADL5315ACPZ-R7 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：SOIC
包装说明：VSON,针数：8
Reach Compliance Code：unknown风险等级：5.59
模拟集成电路 - 其他类型：ANALOG CIRCUITJESD-30 代码：R-XDSO-N8
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：UNSPECIFIED
封装代码：VSON封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, VERY THIN PROFILE峰值回流温度（摄氏度）：260
座面最大高度：1 mm最大供电电压 (Vsup)：8 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温度等级：INDUSTRIAL
端子面层：MATTE TIN端子形式：NO LEAD
端子节距：0.5 mm端子位置：DUAL
处于峰值回流温度下的最长时间：40宽度：2 mm
Base Number Matches：1

ADL5315ACPZ-R7 数据手册

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Precision Wide Range (3 nA to 3 mA)  
High-Side Current Mirror  
ADL5315  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
Accurately mirrors input current (1:1 ratio) over 6 decades  
Linearity 1% from 3 nA to 3 mA  
ADL5315  
VOLTAGE  
REFERENCE  
CURRENT  
LIMITING  
Stable mirror input voltage  
Voltage held 1 V below supply using internal reference  
or can be set externally  
Adjustable input current limit  
2.7 V to 8 V single-supply operation  
Miniature 8-lead LFCSP (2 mm × 3 mm)  
4
3
5
6
COMM  
RLIM  
20kΩ  
CURRENT  
MIRROR  
1:1  
SREF  
VSET  
VPOS  
NC  
2
1
7
8
APPLICATIONS  
IOUT  
I
PD  
INPT  
Optical power monitoring from a single photodiode  
General voltage biasing with precision current monitoring  
Voltage-to-current conversion  
I
PD  
Figure 1.  
GENERAL DESCRIPTION  
The ADL5315 is a wide input current range, precision high-side  
current mirror featuring a stable and user-adjustable input  
voltage. It is optimized for use with PIN photodiodes, but its  
flexibility and wide operating range make it suitable for a broad  
array of additional applications. Over the 3 nA to 3 mA range,  
the current sourced from the INPT pin is accurately mirrored  
with a 1:1 ratio and sourced from the IOUT output pin. In a  
typical photodiode application, the output drives a current-  
input logarithmic amplifier to produce a linear-in-dB output  
representing the optical power incident upon the photodiode.  
For linear voltage output, a single resistor to ground is all that is  
required. The photodiode anode can be connected to a high  
speed transimpedance amplifier for the extraction of the data  
stream. The voltage at the INPT pin is temperature stable with  
respect to the voltage at the VSET input pin, which it tracks. A  
temperature stable reference voltage is provided at the SREF  
pin, which, when tied to VSET, fixes the voltage at INPT 1.0 V  
below VPOS. VSET can also be driven from an external source.  
The VSET input has very low input current and can be driven  
as low as the bottom rail, facilitating nonloading voltage-to-  
current conversion as well as minimizing dark current in  
photodiode applications.  
The ADL5315 also features adjustable input current limiting  
using an external resistor from RLIM to VPOS. The maximum  
current sourced by INPT (and IOUT) can be set between 1 mA  
and 16 mA, beyond which the voltage at INPT falls rapidly  
from its setpoint. Connecting RLIM directly to VPOS provides  
basic input short-circuit protection with the default current  
limit of 16 mA typical.  
The ADL5315 is available in a 2 mm × 3 mm, 8-lead LFCSP and  
is specified for operation from −40°C to +85°C.  
Rev. 0  
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  
© 2005 Analog Devices, Inc. All rights reserved.  
 
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