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ISL21400IU8Z-TK

更新时间： 2024-09-28 03:24:47
品牌 Logo 应用领域
英特矽尔 - INTERSIL 光电二极管
页数 文件大小 规格书
17页 424K
描述
Programmable Temperature Slope Voltage Reference

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ISL21400IU8Z-TK 数据手册

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ISL21400  
®
Data Sheet  
December 14, 2006  
FN8091.0  
Programmable Temperature Slope  
Voltage Reference  
Features  
• Programmable reference voltage  
• Programmable temperature slope  
• Programmable Gain Amplifier  
The ISL21400 features a precision voltage reference  
combined with a temperature sensor whose output voltage  
varies linearly with temperature. The precision 1.20V  
reference has a very low temperature coefficient (tempco),  
and its output voltage is scaled by an internal DAC (V  
produce a temperature stable output voltage that is  
• Non-volatile storage of programming registers  
) to  
REF  
2
• I C serial interface  
programmable from 0V to 1.20V. The output voltage from the  
• 2% total accuracy over temperature and V  
• 200µA typical active supply current  
range  
CC  
temperature sensor (V ) is summed with V  
to produce  
TS  
REF  
a temperature dependent output voltage.  
• Operating temperature range = -40°C to +85°C  
• 8 Ld MSOP package  
The slope of the V portion of the output voltage can be  
TS  
programmed to be positive or negative in the range  
-2.1mV/°C to +2.1mV/°C. A programmable gain amplifier  
Applications  
(PGA) sums the V and the V  
voltages and provides  
TS  
REF  
gains of 1x, 2x, and 4x to scale the output up to 4.8V and the  
slope to ±8.4mV/°C.  
• RF power amplifier bias compensation  
• LCD bias compensation  
• Laser diode bias compensation  
• Sensor bias and linearization  
• Data acquisition systems  
• Variable DAC reference  
• Amplifier biasing  
The V  
REF  
and V terms are programmable with 8 bits of  
TS  
2
resolution via an I C bus and the values are stored in non-  
volatile registers. The PGA gain is also set via the I C bus  
2
and the value is stored in a non-volatile register. Non-volatile  
memory storage assures the programmed settings are  
retained on power-down, eliminating the need for software  
initialization at device power-up.  
Temperature Characteristics Curve  
Pinout  
3.0  
ISL21400  
(8 LD MSOP)  
TOP VIEW  
A
= 2  
V
2.5  
2.0  
1.5  
1.0  
0.5  
0.0  
TS = 127  
= 1  
TS = 255  
TS = 255  
V
V
A2  
1
8
CC  
TS = 0  
TS = 0  
A
V
A1  
A0  
2
3
7
6
OUT  
SDA  
SCL  
TS = 127  
V
SS  
4
5
-40  
-15  
10  
35  
60  
85  
TEMPERATURE (°C)  
Ordering Information  
V
RANGE  
(V)  
TEMP RANGE  
(°C)  
DD  
PART NUMBER (Note)  
ISL21400IU8Z  
PART MARKING  
DEW  
PACKAGE  
PKG. DWG. #  
M8.118  
M8.118  
2.7 to 5.5  
2.7 to 5.5  
-40 to +85  
-40 to +85  
8 Ld MSOP (Pb-free)  
8 Ld MSOP (Pb-free)  
ISL21400IU8Z-TK  
DEW  
NOTE: Intersil Pb-free products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination  
finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at  
Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.  
Copyright Intersil Americas Inc. 2005. All Rights Reserved  
All other trademarks mentioned are the property of their respective owners.  
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