LMV841MG National Semiconductor Corporation, LMV841MG Datasheet

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LMV841MG

Manufacturer Part Number
LMV841MG
Description
The ADC14V155 is a high-performance CMOS analog-to-digital converter with LVDS outputs. It is capable of converting analog input signals into 14-Bit digital words at rates up to 155 Mega Samples Per Second (MSPS). Data leaves the chip in a DDR (Dual
Manufacturer
National Semiconductor Corporation
Datasheet

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© 2007 National Semiconductor Corporation
LMV841 / LMV844
CMOS Input, RRIO, Wide Supply Range Operational
Amplifiers
General Description
The LMV841 and LMV844 are low-voltage and low-power
operational amplifiers that operate with supply voltages rang-
ing from 2.7V to 12V and have rail-to-rail input and output
capability.
The LMV841 and LMV844 are low offset voltage and low
supply current amplifiers with MOS inputs, characteristics that
make the LMV841/LMV844 ideal for sensor interface and
battery powered applications.
The LMV841 is offered in the space saving 5-pin SC70 pack-
age and the quad LMV844 comes in the 14-Pin TSSOP
package. These small packages are solutions for area con-
strained PC boards and portable electronics.
Typical Applications
201683
Features
Unless otherwise noted, typical values at T
Applications
Space saving 5-Pin SC70 package
Supply voltage range 2.7V to 12V
Guaranteed at 3.3V, 5V and ±5V
Low supply current
Unity gain bandwidth
Open loop gain
Input offset voltage
Input bias current
CMRR
Input voltage noise
Temperature range
Rail-to-rail input
Rail-to-rail output
High impedance sensor interface
Battery powered instrumentation
High gain amplifiers
DAC buffer
Instrumentation amplifiers
Active Filters
1 mA per channel
A
= 25°C, V
−40°C to 125°C
20168301
www.national.com
500 μV max
March 2007
20 nV/
4.5 MHz
100 dB
100 dB
0.3 pA
+
= 5V

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LMV841MG Summary of contents

Page 1

... LMV844 comes in the 14-Pin TSSOP package. These small packages are solutions for area con- strained PC boards and portable electronics. Typical Applications © 2007 National Semiconductor Corporation Features Unless otherwise noted, typical values at T ■ Space saving 5-Pin SC70 package ■ ...

Page 2

Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. ESD Tolerance (Note 2) Human Body Model Machine Model V Differential IN Supply Voltage (V + – V − ...

Page 3

Symbol Parameter e Input-Referred Voltage Noise n R Open Loop Output Impedance OUT THD+N Total Harmonic Distortion + Noise C Input Capacitance IN 5V Electrical Characteristics Unless otherwise specified, all limits are guaranteed for at T Boldface limits apply at ...

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Symbol Parameter THD+N Total Harmonic Distortion + Noise C Input Capacitance IN ±5V Electrical Characteristics Unless otherwise specified, all limits are guaranteed for at T Boldface limits apply at the temperature extremes. Symbol Parameter V Input Offset Voltage OS TCV ...

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... Note 9: Short circuit test is a momentary test. Note 10: Number specified is the slower of positive and negative slew rates. Connection Diagrams 5-Pin SC70 Top View Ordering Information Package Part Number LMV841MG 5-Pin SC70 LMV841MGX LMV844MT 14-Pin TSSOP LMV844MTX , θ , and T . The maximum allowable power dissipation at any ambient temperature is J(MAX ...

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Typical Performance Characteristics V vs. V Over Temperature at 3. vs. V Over Temperature at ±5. vs. Temperature OS www.national.com 25° kΩ vs. V ...

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Input Bias Current vs 20168316 Input Bias Current vs 20168318 Sinking Current vs. Supply Voltage 20168320 Input Bias Current vs. V Supply Current vs. Supply Voltage Sourcing Current vs. Supply Voltage 7 CM 20168317 20168319 20168321 ...

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Output Swing High vs. Supply Voltage R Output Swing Low vs. Supply Voltage R Output Voltage Swing vs. Load Current www.national.com = 2k Output Swing High vs. Supply Voltage R L 20168322 = 2k Output Swing Low vs. Supply Voltage ...

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Open Loop Frequency Response Over Load Conditions PSRR vs. Frequency Channel separation vs. Frequency Phase Margin vs. C 20168328 CMRR vs. Frequency 20168330 Large Signal Step Response With GAIN = 1 20168332 9 L 20168329 20168331 20168373 www.national.com ...

Page 10

Large Signal Step Response With GAIN = 10 Small Signal Step Response With GAIN = 10 Input Voltage Noise vs. Frequency www.national.com Small Signal Step Response With GAIN = 1 20168374 Overshoot vs C 20168376 THD+N vs. Frequency 20168339 10 ...

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THD+N vs. V OUT 20168341 Closed Loop Output Impedance vs. Frequency 11 20168343 www.national.com ...

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Application Information INTRODUCTION The LMV841 and LMV844 are operational amplifiers with near-precision specifications: low noise, low temperature drift, low offset and rail-to-rail input and output. The low supply current, a temperature range of −40°C to 125°C, the 12V supply with ...

Page 13

However, using low resistor values will increase the power consumption of the application. This is not always acceptable for portable applications. To determine if the noise is acceptable for the application, use the following formula for resistor noise : where: ...

Page 14

The filter responses of filter A and filter B are shown as the thin lines in Figure 4, the response of the combined filter is shown as the thick line. Shifting the center frequencies of the separate filters farther apart, ...

Page 15

FIGURE 7. K-Type Thermocouple Response Thermocouple Example Suppose the range we are interested in for this example is from 0°C to 500°C, and the resolution needed is 0.5°C. The power supply for both the LMV841 and the ADC is 3.3V. ...

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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 5-Pin SC70 NS Package Number MAA05A 14–Pin TSSOP NS Package Number MTC14 16 ...

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Notes 17 www.national.com ...

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... National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. ...

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