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OPA2349UA2K5 PDF预览

OPA2349UA2K5

更新时间: 2024-11-24 00:53:59
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德州仪器 - TI 放大器
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23页 1140K
描述
1A, Rail-to-Rail I/O CMOS OPERATIONAL AMPLIFIERS

OPA2349UA2K5 数据手册

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OPA349  
OPA2349  
OPA349  
O
P
A
2
34  
9
SBOS121B – JUNE 2000 – REVISED JANUARY 2004  
1µA, Rail-to-Rail I/O CMOS  
OPERATIONAL AMPLIFIERS  
DESCRIPTION  
FEATURES  
The OPA349 and OPA2349 are ultra-low power operational  
amplifiers that provide 70kHz bandwidth with only 1µA quies-  
cent current. These rail-to-rail input and output amplifiers are  
specifically designed for battery-powered applications. The  
input common-mode voltage range extends 200mV beyond  
the power-supply rails and the output swings to within 350mV  
of the rails, maintaining wide dynamic range. Unlike some  
micropower op amps, these parts are unity-gain stable and  
require no external compensation to achieve wide band-  
width. The OPA349 features a low input bias current that  
allows the use of large source and feedback resistors.  
LOW SUPPLY CURRENT: 1µA  
GAIN-BANDWIDTH: 70kHz  
UNITY-GAIN STABLE  
LOW INPUT BIAS CURRENT: 10pA (max)  
WIDE SUPPLY RANGE: 1.8V to 5.5V  
INPUT RANGE: 200mV Beyond Rails  
OUTPUT SWINGS TO 350mV OF RAILS  
OUTPUT DRIVE CURRENT: 8mA  
OPEN-LOOP GAIN: 90dB  
MicroPACKAGES: SC70, SOT23-5, SOT23-8  
The OPA349 can be operated with power supplies from 1.8V  
to 5.5V with little change in performance, ensuring continuing  
superior performance even in low battery situations.  
APPLICATIONS  
BATTERY PACKS AND POWER SUPPLIES  
PORTABLE PHONES, PAGERS, AND CAMERAS  
SOLAR-POWERED SYSTEMS  
SMOKE, GAS, AND FIRE DETECTION SYSTEMS  
REMOTE SENSORS  
PCMCIA CARDS  
DRIVING ANALOG-TO-DIGITAL (A/D) CONVERTERS  
MicroPOWER FILTERS  
The OPA349 comes in miniature SOT23-5, SC70, and SO-8  
surface-mount packages. The OPA2349 dual is available in  
SOT23-8, and SO-8 surface-mount packages. These tiny  
packages are ideal for use in high-density applications, such  
as PCMCIA cards, battery packs, and portable instruments.  
The OPA349 is specified for 0°C to +70°C. The OPA2349 is  
specified for –40°C to +70°C.  
OPEN-LOOP GAIN AND PHASE vs FREQUENCY  
100  
OPAx349 RELATED PRODUCTS  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
0
FEATURES  
PRODUCT  
Gain  
1µA, 5.5kHz, Rail-To-Rail  
1µA, 5.5kHz, Rail-To-Rail  
TLV240x  
TLV224x  
TLV238x  
TLV27Lx  
TLV276x  
OPAx347  
OPAx348  
45  
90  
135  
180  
Phase  
7µA, 160kHz, Rail-To-Rail, 2.7V to 16V Supply  
7µA, 160kHz, Rail-To-Rail, Micro Power  
20µA, 500kHz, Rail-To-Rail, 1.8V Micro Power  
20µA, 350kHz, Rail-To-Rail, Micro Power  
45µA, 1MHz, Rail-To-Rail, 2.1V to 5.5V Supply  
0.1  
1
10  
100  
1k  
10k  
100k  
1M  
Frequency (Hz)  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
Copyright © 2000-2004, Texas Instruments Incorporated  
www.ti.com  

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