LMV1032UP-25 National Semiconductor Corporation, LMV1032UP-25 Datasheet

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LMV1032UP-25

Manufacturer Part Number
LMV1032UP-25
Description
Amplifiers For 3 Wire Analog Electret Microphones
Manufacturer
National Semiconductor Corporation
Datasheet
© 2004 National Semiconductor Corporation
LMV1032-06/LMV1032-15/LMV1032-25
Amplifiers for 3 Wire Analog Electret Microphones
General Description
The LMV1032 is an audio amplifier series for small form
factor electret microphones. It is designed to replace the
JFET preamp currently being used. The LMV1032 series is
ideal for extended battery life applications, such as a blue-
tooth communication link. The addition of a third pin in
electret microphones that incorporate the LMV1032 allows
for a dramatic reduction in supply current as compared to the
JFET equipped electret microphone. Microphone supply cur-
rent is thus reduced to 60 µA, assuring longer battery life.
The LMV1032 series is guaranteed for supply voltages from
1.7V to 5V, and has fixed voltage gains of 6 dB, 15 dB and 25
dB.
The LMV1032 series offers low output impedance over the
voice bandwidth, excellent power supply rejection (PSRR),
and stability over temperature.
The devices are offered in space saving 4-bump ultra thin
micro SMD (TM) lead free package and are thus ideally
suited for the form factor of miniature electret microphone
packages.
Block Diagram
DS200842
20084201
Features
(Typical LMV1032-06, 1.7V Supply; Unless Otherwise
Noted)
n Output voltage noise (A-weighted)
n Low supply current
n Supply voltage
n PSRR
n Signal to noise ratio
n Input capacitance
n Input impedance
n Output impedance
n Max input signal
n Temperature range
n Offered in 1.13 x 1.13 x 0.4mm Ultra Thin micro SMD
Applications
n Mobile communications - Bluetooth
n Automotive accessories
n Cellular phones
n PDAs
n Accessory microphone products
Electret Microphone
lead free (NOPB) package
February 2004
−40˚C to 85˚C
www.national.com
1.7V to 5V
300 mV
>
−97 dBV
100 MΩ
<
20084202
60 µA
84 dB
58 dB
200Ω
2 pF
PP

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LMV1032UP-25 Summary of contents

Page 1

... The devices are offered in space saving 4-bump ultra thin micro SMD (TM) lead free package and are thus ideally suited for the form factor of miniature electret microphone packages. Block Diagram © 2004 National Semiconductor Corporation Features (Typical LMV1032-06, 1.7V Supply; Unless Otherwise Noted) 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 1.7V and 5V Electrical ...

Page 3

Electrical Characteristics Unless otherwise specified, all limits guaranteed for T ture extremes. Symbol Parameter THD Total Harmonic Distortion C Input Capacitance IN Z Input Impedance IN A Gain V Note 1: Absolute Maximum Ratings indicate limits beyond ...

Page 4

... Part Number LMV1032UP-06 LMV1032UPX-06 LMV1032UP-15 4-Bump Ultra Thin micro SMD lead free LMV1032UPX-15 LMV1032UP-25 LMV1032UPX-25 Note: The LMV1032 series is offered only with lead free (NOPB) solder bumps. The LMV1032 series replaces the LMV1014. www.national.com 4-Bump Ultra Thin micro SMD 20084203 Top View ...

Page 5

Typical Performance Characteristics 25˚C Supply Current vs. Supply Voltage (LMV1032-06) Supply Current vs. Supply Voltage (LMV1032-25) Closed Loop Gain and Phase vs. Frequency (LMV1032-15) Unless otherwise specified, V Supply Current vs. Supply Voltage (LMV1032-15) 20084204 Closed Loop Gain and Phase ...

Page 6

Typical Performance Characteristics 25˚C (Continued) Power Supply Rejection Ratio vs. Frequency (LMV1036-06) Power Supply Rejection Ratio vs. Frequency (LMV1032-25) Total Harmonic Distortion vs. Frequency (LMV1032-15) www.national.com Unless otherwise specified, V Power Supply Rejection Ratio vs. Frequency 20084206 Total Harmonic Distortion ...

Page 7

Typical Performance Characteristics 25˚C (Continued) Total Harmonic Distortion vs. Input Voltage (LMV1032-06) Total Harmonic Distortion vs. Input Voltage (LMV1032-25) Output Voltage Noise vs. Frequency (LMV1032-15) Unless otherwise specified, V Total Harmonic Distortion vs. Input Voltage 20084208 Output Voltage Noise vs. ...

Page 8

Application Section LOW CURRENT The LMV1032 has low supply current for a longer battery life. The low supply current makes this amplifier suitable for microphone applications which need to be always on. BUILT IN GAIN The LMV1032 is offered in ...

Page 9

Application Section (Continued) The conversion is given by: dBPa = dB SPL + 20*log 20 µPa dBPa = dB SPL - 94 dB Translation from absolute sound pressure level to a voltage is specified by the sensitivity of the microphone. ...

Page 10

Physical Dimensions unless otherwise noted NOTE: UNLESS OTHERWISE SPECIFIED. 1. TITANIUM COATING. 2. FOR SOLDER BUMP COMPOSITION, SEE "SOLDER INFORMATION" IN THE PACKAGING SECTION OF THE NATIONAL SEMICONDUCTOR WEB PAGE (www.national.com). 3. RECOMMEND NON-SOLDER MASK DEFINED LANDING PAD. 4. PIN ...

Page 11

... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...

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