LMV1031URX-20/NOPB National Semiconductor, LMV1031URX-20/NOPB Datasheet

IC AMP AUDIO MONO AB MIC 4USMD

LMV1031URX-20/NOPB

Manufacturer Part Number
LMV1031URX-20/NOPB
Description
IC AMP AUDIO MONO AB MIC 4USMD
Manufacturer
National Semiconductor
Type
Class ABr
Datasheet

Specifications of LMV1031URX-20/NOPB

Output Type
1-Channel (Mono)
Voltage - Supply
2 V ~ 5 V
Features
Microphone
Mounting Type
Surface Mount
Package / Case
4-MicroSMD
Operational Class
Class-AB
Audio Amplifier Output Configuration
1-Channel Mono
Audio Amplifier Function
Microphone
Total Harmonic Distortion
0.18%
Single Supply Voltage (typ)
3V
Dual Supply Voltage (typ)
Not RequiredV
Supply Current (max)
0.09@5VmA
Power Supply Requirement
Single
Rail/rail I/o Type
No
Power Supply Rejection Ratio
56dB
Single Supply Voltage (min)
2V
Single Supply Voltage (max)
5V
Dual Supply Voltage (min)
Not RequiredV
Dual Supply Voltage (max)
Not RequiredV
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
4
Package Type
uSMD
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Max Output Power X Channels @ Load
-
Lead Free Status / Rohs Status
Compliant
Other names
LMV1031URX-20
© 2005 National Semiconductor Corporation
LMV1031-20
Amplifier for Internal 3-Wire Analog Microphones and
External Preamplifier
General Description
The LMV1031 audio amplifier is an ideal replacement for the
JFET preamplifier that is currently used in the electret micro-
phones. The LMV1031 is optimized for applications that
require extended battery life, such as Bluetooth communica-
tion links. The supply current for the LMV1031 is only 72 µA.
This is a dramatic reduction from that required for a JFET
equipped microphone. The LMV1031, with its separate out-
put and supply pins, offers a higher PSRR and eliminates the
need for additional external components.
The LMV1031 is guaranteed to operate from 2V to 5V supply
voltage over the full temperature range, has a fixed voltage
gain of 20 dB and enhanced SNR performance. The
LMV1031 is optimized for an output biasing of 1.09V.
The LMV1031 has less than 200Ω of output impedance over
the full audio bandwidth. The gain response of the LMV1031
is flat within the audio band and is stable over the tempera-
ture range.
The LMV1031 is available in a large dome 4-bump ultra thin
micro SMD package that can easily fit on the PCB inside the
miniature microphone metal can (package). This package is
designed for microphone PCBs requiring 1 kg adhesion
criteria.
Block Diagram
DS201508
20150801
Features
(Typical LMV1031-20, 2V Supply; Unless Otherwise Noted)
n Signal to noise ratio
n Output voltage noise (A-weighted)
n Low supply current
n Supply voltage
n Input impedance
n Max input signal
n Output voltage
n Temperature range
n Large Dome 4-Bump micro SMD package with improved
Applications
n Mobile communications - Bluetooth
n Accessory microphone products
n Cellular phones
n PDAs
Electret Microphone
adhesion technology.
−40˚C to 85˚C
October 2005
www.national.com
108 mV
>
−86 dBV
2V to 5V
100 MΩ
20150804
62 dB
72 µA
1.09V
PP

Related parts for LMV1031URX-20/NOPB

LMV1031URX-20/NOPB Summary of contents

Page 1

... SMD package that can easily fit on the PCB inside the miniature microphone metal can (package). This package is designed for microphone PCBs requiring 1 kg adhesion criteria. Block Diagram © 2005 National Semiconductor Corporation Features (Typical LMV1031-20, 2V Supply; Unless Otherwise Noted) n Signal to noise ratio n Output voltage noise (A-weighted) ...

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 Supply Voltage V - GND DD 2V and 5V Electrical Characteristics Unless otherwise specified, all limits are guaranteed for T ture extremes ...

Page 3

... Package marking does not correlate to device type in any way. Ordering Information Package Part Number LMV1031UR-20 4-Bump Ultra Thin micro SMD lead free LMV1031URX-20 4-Bump Ultra Thin micro SMD 20150803 Top View Package Marking Transport Media 250 Units Tape and Reel Date Code ...

Page 4

Typical Performance Characteristics Supply Current vs. Supply Voltage Gain vs. Supply Voltage Power Supply Rejection Ratio vs. Frequency www.national.com Unless otherwise specified, V Output Voltage vs. Supply Voltage 20150815 Closed Loop Gain and Phase vs. Frequency 20150824 Total Harmonic Distortion ...

Page 5

Typical Performance Characteristics 25˚C (Continued) Total Harmonic Distortion vs. Input Voltage Unless otherwise specified, V Output Voltage Noise vs. Frequency 20150819 5 = 2V, single supply 20150820 www.national.com ...

Page 6

Application Section LOW CURRENT The LMV1031 has a low supply current which allows for a longer battery life. The low supply current of 72 µA makes this amplifier optimal for microphone applications which need to be always on. BUILT-IN GAIN ...

Page 7

Application Section (Continued) FIGURE 4. Performance vs. Output Current MEASURING NOISE AND SNR The overall noise of the LMV1031 is measured within the frequency band from kHz using an A-weighted filter. The input of the LMV1031 ...

Page 8

Application Section (Continued) FIGURE 7. Gain vs. Frequency www.national.com The LMV1031 is optimized to be used in audio band appli- cations. As shown in Figure 7, the LMV1031 provides a flat gain response within the audio band and offers excellent ...

Page 9

... NOTE: UNLESS OTHERWISE SPECIFIED. 1. FOR SOLDER BUMP COMPOSITION, SEE "SOLDER INFORMATION" IN THE PACKAGING SECTION OF THE NATIONAL SEMICONDUCTOR WEB PAGE (www.national.com). 2. RECOMMEND NON-SOLDER MASK DEFINED LANDING PAD. 3. PIN A1 IS ESTABLISHED BY LOWER LEFT CORNER WITH RESPECT TO TEXT ORIENTATION. ...

Page 10

Tel: 81-3-5639-7560 ...

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