LMV1032-06_0511 NSC [National Semiconductor], LMV1032-06_0511 Datasheet

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LMV1032-06_0511

Manufacturer Part Number
LMV1032-06_0511
Description
Amplifiers for 3-Wire Analog Electret Microphones
Manufacturer
NSC [National Semiconductor]
Datasheet
© 2005 National Semiconductor Corporation
LMV1032-06/LMV1032-15/LMV1032-25
Amplifiers for 3-Wire Analog Electret Microphones
General Description
The LMV1032s are an audio amplifier series for small form
factor electret microphones. They are designed to replace
the JFET preamp currently being used. The LMV1032 series
is ideal for extended battery life applications, such as a
Bluetooth communication link. The addition of a third pin to
an electret microphones that incorporates an LMV1032 al-
lows for a dramatic reduction in supply current as compared
to the JFET equipped electret microphone. Microphone sup-
ply current 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 packages and are thus ideally
suited for the form factor of miniature electret microphone
packages. These extremely miniature packages have the
Large Dome Bump (LDB) technology. This micro SMD tech-
nology is designed for microphone PCBs requiring 1 kg
adhesion criteria.
Block Diagram
DS200842
20084201
Features
(Typical LMV1032-15, 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 Large Dome 4-Bump micro SMD package with improved
Applications
n Mobile communications - Bluetooth
n Automotive accessories
n Cellular phones
n PDAs
n Accessory microphone products
Electret Microphone
adhesion technology.
November 2005
−40˚C to 85˚C
www.national.com
1.7V to 5V
170 mV
>
−89 dBV
100 MΩ
<
20084202
60 µA
70 dB
61 dB
200Ω
2 pF
PP

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LMV1032-06_0511 Summary of contents

Page 1

... LMV1032-06/LMV1032-15/LMV1032-25 Amplifiers for 3-Wire Analog Electret Microphones General Description The LMV1032s are an audio amplifier series for small form factor electret microphones. They are designed to replace the JFET preamp currently being used. The LMV1032 series is ideal for extended battery life applications, such as a Bluetooth communication link ...

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... LMV1032- kHz and THD+N LMV1032-06 < 1% LMV1032-15 LMV1032- 50Ω SOURCE 50Ω LMV1032-06 SOURCE LMV1032- LMV1032-25 A-Weighted LMV1032-06 LMV1032-15 LMV1032- GND LMV1032-06 IN LMV1032-15 LMV1032- kHz V = 1.7V 1.7V, Sinking DD OUT V = 1.7V 0V, Sourcing DD OUT 1.7V, Sinking DD OUT ...

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... Boldface limits apply at the tempera Conditions kHz LMV1032- LMV1032- LMV1032- kHz LMV1032- LMV1032-15 LMV1032-25 , θ and T . The maximum allowable power dissipation at any ambient temperature is P J(MAX Min Typ Max (Note 4) (Note 5) (Note 4) Units 0.11 0. ...

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... LMV1032UP-15 Ultra Thin micro SMD (Small Bump) LMV1032UPX-15 Lead Free 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 Large Dome 4-Bump micro SMD 20084203 Top View Package Transport Media ...

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... 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 vs. Frequency 20084214 Closed Loop Gain and Phase vs. Frequency 20084215 ...

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... 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 vs. Frequency (LMV1032-06) 20084218 Total Harmonic Distortion vs. Frequency (LMV1032-25) 20084219 6 = 1.7V, single supply (LMV1032-15) 20084217 20084207 20084220 ...

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... 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. Frequency (LMV1032-06) 20084222 Output Voltage Noise vs. Frequency (LMV1032-25) 20084224 7 = 1.7V, single supply (LMV1032-15) 20084221 20084223 20084225 www ...

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... Application Section LOW CURRENT The LMV1032 has a low supply current which allows for a longer battery life. The low supply current of 60µA makes this amplifier optimal for microphone applications which need to be always on. BUILT-IN GAIN The LMV1032 is offered in the space saving small micro SMD package which fits perfectly into the metal can of a microphone ...

Page 9

... This type of noise is called bumblebee noise. EXTERNAL PRE-AMPLIFIER APPLICATION The LMV1032 can also be used outside of an ECM as a space saving external pre-amplifier. In this application, the LMV1032 follows a phantom biased JFET microphone in the circuit. This is shown in Figure 6. The input of the LMV1032 is connected to the microphone via the 2.2 µ ...

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Physical Dimensions unless otherwise noted 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 ...

Page 11

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 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 ...

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

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