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PDF LMV1032-15 Data sheet ( Hoja de datos )
| Número de pieza | LMV1032-15 | |
| Descripción | Amplifiers for 3 Wire Analog Electret Microphones | |
| Fabricantes | National Semiconductor | |
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February 2004
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.
Features
(Typical LMV1032-06, 1.7V Supply; Unless Otherwise
Noted)
n Output voltage noise (A-weighted)
−97 dBV
n Low supply current
60 µA
n Supply voltage
1.7V to 5V
n PSRR
84 dB
n Signal to noise ratio
58 dB
n Input capacitance
n Input impedance
n Output impedance
2 pF
>100 MΩ
<200Ω
n Max input signal
n Temperature range
300 mVPP
−40˚C to 85˚C
n Offered in 1.13 x 1.13 x 0.4mm Ultra Thin micro SMD
lead free (NOPB) package
Applications
n Mobile communications - Bluetooth
n Automotive accessories
n Cellular phones
n PDAs
n Accessory microphone products
Block Diagram
Electret Microphone
20084201
© 2004 National Semiconductor Corporation DS200842
20084202
www.national.com
1 page  
Typical Performance Characteristics Unless otherwise specified, VS = 1.7V, single supply, TA =
25˚C
Supply Current vs. Supply Voltage (LMV1032-06)
Supply Current vs. Supply Voltage (LMV1032-15)
20084204
Supply Current vs. Supply Voltage (LMV1032-25)
20084213
Closed Loop Gain and Phase vs. Frequency
(LMV1032-06)
20084214
Closed Loop Gain and Phase vs. Frequency
(LMV1032-15)
20084205
Closed Loop Gain and Phase vs. Frequency
(LMV1032-25)
20084215
5
20084216
www.national.com
5 Page 
Notes
LIFE SUPPORT POLICY
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
into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a
significant injury to the user.
2. A critical component is any component of a life
support device or system whose failure to perform
can be reasonably expected to cause the failure of
the life support device or system, or to affect its
safety or effectiveness.
BANNED SUBSTANCE COMPLIANCE
National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products
Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification
(CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2.
National Semiconductor
Americas Customer
Support Center
Email: [email protected]
Tel: 1-800-272-9959
www.national.com
National Semiconductor
Europe Customer Support Center
Fax: +49 (0) 180-530 85 86
Email: [email protected]
Deutsch Tel: +49 (0) 69 9508 6208
English Tel: +44 (0) 870 24 0 2171
Français Tel: +33 (0) 1 41 91 8790
National Semiconductor
Asia Pacific Customer
Support Center
Email: [email protected]
National Semiconductor
Japan Customer Support Center
Fax: 81-3-5639-7507
Email: [email protected]
Tel: 81-3-5639-7560
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet LMV1032-15.PDF ] | |
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