National Semiconductor LMV1012 Technical data

查询LMV1012供应商

LMV1012 Analog Series:
Pre-Amplified IC’s for High Gain 2-Wire Microphones

LMV1012 Analog Series Pre-Amplified IC’s for High Gain 2-Wire Microphones

August 2004

General Description

The LMV1012 is an audio amplifier series for small form
factor electret microphones. This 2-wire portfolio is designed
to replace the JFET amplifier currently being used. The
LMV1012 series is ideally suited for applications requiring
high signal integrity in the presence of ambient or RF noise,
such as in cellular communications. The LMV1012 audio
amplifiers are guaranteed to operate over a 2.2V to 5.0V
supply voltage range with fixed gains of 7.8 dB, 15.6 dB,

20.9 dB, and 23.8 dB. The devices offer excellent THD, gain
accuracy and temperature stability as compared to a JFET
microphone.

The LMV1012 series enables a two-pin electret microphone
solution, which provides direct pin-to-pin compatibility with
the existing JFET market.

The devices are offered in extremely thin space saving
4-bump micro SMD packages. The LMV1012XP is designed
for 1.0 mm canisters and thicker ECM canisters. These
extremely miniature packages are designed for electret con­denser microphones (ECM) form factor.

Schematic Diagram

Features

(Typical LMV1012-15, 2.2V supply, RL= 2.2 kΩ, C = 2.2 µF,

=18mVPP, unless otherwise specified)

V

IN

n Supply voltage 2V - 5V
n Supply current
n Signal to noise ratio (A-weighted) 60 dB
n Output voltage noise (A-weighted) −89 dBV
n Total harmonic distortion 0.09%
n Voltage gain

— LMV1012-07 7.8 dB
— LMV1012-15 15.6 dB
— LMV1012-20 20.9 dB
— LMV1012-25 23.8 dB

n Temperature range −40˚C to 85˚C
n Offered in 4-bump micro SMD packages

<

180 µA

Applications

n Cellular phones
n Headsets
n Mobile communications
n Automotive accessories
n PDAs
n Accessory microphone products

Built-In Gain Electret Microphone

20058702

20058701

© 2004 National Semiconductor Corporation DS200587 www.national.com

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.

Storage Temperature Range −65˚C to 150˚C

Junction Temperature (Note 6) 150˚C max

Mounting Temperature

Infrared or Convection (20 sec.) 235˚C

ESD Tolerance (Note 2)

Human Body Model 2500V

Operating Ratings (Note 1)

Machine Model 250V

LMV1012 Analog Series

Supply Voltage

- GND 5.5V

V

DD

Supply Voltage 2V to 5V

Temperature Range −40˚C to 85˚C

2.2V Electrical Characteristics (Note 3)

Unless otherwise specified, all limits guaranteed for TJ= 25˚C, VDD= 2.2V, VIN= 18 mV, RL= 2.2 kΩ and C = 2.2 µF.

Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions

I

DD

SNR Signal to Noise Ratio f = 1 kHz, V

Supply Current VIN= GND LMV1012-07 139 250

=18

IN

mV, A-Weighted

V

V

f

LOW

f

HIGH

e

IN

OUT

n

Max Input Signal f = 1 kHz and

<

THD+N

1%

Output Voltage VIN= GND LMV1012-07 1.65

Lower −3dB Roll Off Frequency R

Upper −3dB Roll Off Frequency R

SOURCE

SOURCE

=50Ω 65 Hz

=50Ω 95 kHz

Output Noise A-Weighted LMV1012-07 −96

THD Total Harmonic Distortion f = 1 kHz,

V

=18mV

IN

C

IN

Z

IN

Input Capacitance 2pF

Input Impedance

Min

(Note 4)

LMV1012-15 180 300

LMV1012-20 160 250

LMV1012-25 141 250

LMV1012-07 59

LMV1012-15 60

LMV1012-20 61

LMV1012-25 61

LMV1012-07 170

LMV1012-15 100

LMV1012-20 50

LMV1012-25 28

1.54

LMV1012-15 1.54

1.48

LMV1012-20 1.65

1.55

LMV1012-25 1.65

1.49

LMV1012-15 −89

LMV1012-20 −84

LMV1012-25 −82

LMV1012-07 0.10

LMV1012-15 0.09

LMV1012-20 0.12

LMV1012-25 0.15

Typ

(Note 5)

1.90 2.03

1.81 1.94

1.85 2.03

1.90 2.02

>

1000 GΩ

Max

(Note 4) Units

300

325

µA

300

300

dB

mV

PP

2.09

2.00

V

2.13

2.18

dBV

%

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2.2V Electrical Characteristics (Note 3) (Continued)

Unless otherwise specified, all limits guaranteed for TJ= 25˚C, VDD= 2.2V, VIN= 18 mV, RL= 2.2 kΩ and C = 2.2 µF.

Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions

A

V

Gain f = 1 kHz,

R

SOURCE

=50Ω

Min

(Note 4)

LMV1012-07 6.4

5.5

LMV1012-15 14.0

13.1

LMV1012-20 19.5

17.4

LMV1012-25 22.5

21.4

Typ

(Note 5)

(Note 4) Units

7.8 9.5

15.6 16.9

20.9 22.0

23.8 25.0

Max

10.0

17.5

23.3

25.7

5V Electrical Characteristics (Note 3)

Unless otherwise specified, all limits guaranteed for TJ= 25˚C, VDD= 5V, VIN= 18 mV, RL= 2.2 kΩ and C = 2.2 µF.

Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions

I

DD

SNR Signal to Noise Ratio f = 1 kHz, V

Supply Current VIN= GND LMV1012-07 158 250

=18

IN

mV, A-Weighted

V

V

f

LOW

f

HIGH

e

IN

OUT

n

Max Input Signal f = 1 kHz and

<

THD+N

1%

Output Voltage VIN= GND LMV1012-07 4.45

Lower −3dB Roll Off Frequency R

Upper −3dB Roll Off Frequency R

SOURCE

SOURCE

=50Ω 67 Hz

=50Ω 150 kHz

Output Noise A-Weighted LMV1012-07 −96

THD Total Harmonic Distortion f = 1 kHz,

V

=18mV

IN

Min

(Note 4)

LMV1012-15 200 300

LMV1012-20 188 260

LMV1012-25 160 250

LMV1012-07 59

LMV1012-15 60

LMV1012-20 61

LMV1012-25 61

LMV1012-07 170

LMV1012-15 100

LMV1012-20 55

LMV1012-25 28

4.38

LMV1012-15 4.34

4.28

LMV1012-20 4.40

4.30

LMV1012-25 4.45

4.39

LMV1012-15 −89

LMV1012-20 −84

LMV1012-25 −82

LMV1012-07 0.12

LMV1012-15 0.13

LMV1012-20 0.18

LMV1012-25 0.21

Typ

(Note 5)

(Note 4) Units

4.65 4.80

4.56 4.74

4.58 4.75

4.65 4.83

Max

300

325

310

300

4.85

4.80

4.85

4.86

mV

dBV

LMV1012 Analog Series

dB

µA

dB

PP

V

%

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5V Electrical Characteristics (Note 3) (Continued)

Unless otherwise specified, all limits guaranteed for TJ= 25˚C, VDD= 5V, VIN= 18 mV, RL= 2.2 kΩ and C = 2.2 µF.

Boldface limits apply at the temperature extremes.

Min

Symbol Parameter Conditions

C

IN

Z

IN

A

V

LMV1012 Analog Series

Input Capacitance 2pF

Input Impedance

Gain f = 1 kHz,

R

SOURCE

=50Ω

LMV1012-07 6.4

(Note 4)

5.5

LMV1012-15 14.0

13.1

LMV1012-20 19.2

17.0

LMV1012-25 22.5

21.2

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is

intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.

Note 2: Human Body Model (HBM) is 1.5 kΩ in series with 100 pF.

Note 3: Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very limited self-heating of

the device such that T

Note 4: All limits are guaranteed by design or statistical analysis.

Note 5: Typical values represent the most likely parametric norm.

Note 6: The maximum power dissipation is a function of T

P

=(T

D

J(MAX)-TA

. No guarantee of parametric performance is indicated in the electrical tables under conditions of internal self-heating where T

J=TA

, θJAand TA. The maximum allowable power dissipation at any ambient temperature is

)/θJA. All numbers apply for packages soldered directly into a PC board.

J(MAX)

Typ

(Note 5)

>

1000 GΩ

Max

(Note 4) Units

8.1 9.5

10.7

15.6 16.9

17.5

21.1 22.3

23.5

23.9 25.0

25.8

dB

>

TA.

J

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Connection Diagram

LMV1012 Analog Series

4-Bump micro SMD

Top View

Note: - Pin numbers are referenced to package marking text orientation.

- The actual physical placement of the package marking will vary slightly from part to part. The package will designate the date code and will vary considerably.
Package marking does not correlate to device type in any way.

20058703

Ordering Information

Package Part Number Package Marking Transport Media NSC Drawing

4-Bump Extreme Thin

micro SMD

(0.3 mm max height)

lead free only

4-Bump Ultra-Thin

micro SMD

(0.4 mm max height)

lead free only

4-Bump Thin

micro SMD

(0.5 mm max height)

LMV1012XP-15

LMV1012XPX-15 3k Units Tape and Reel

LMV1012XP-25 250 Units Tape and Reel

LMV1012XPX-25 3k Units Tape and Reel

LMV1012UP-07

LMV1012UPX-07 3k Units Tape and Reel

LMV1012UP-15 250 Units Tape and Reel

LMV1012UPX-15 3k Units Tape and Reel

LMV1012UP-20 250 Units Tape and Reel

LMV1012UPX-20 3k Units Tape and Reel

LMV1012UP-25 250 Units Tape and Reel

LMV1012UPX-25 3k Units Tape and Reel

LMV1012TP-07

LMV1012TPX-07 3k Units Tape and Reel

LMV1012TP-15 250 Units Tape and Reel

LMV1012TPX-15 3k Units Tape and Reel

LMV1012TP-25 250 Units Tape and Reel

LMV1012TPX-25 3k Units Tape and Reel

Date Code

Date Code

Date Code

250 Units Tape and Reel

XPA04HLA

250 Units Tape and Reel

UPA04GKA

250 Units Tape and Reel

TPA04GKA

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