National Semiconductor LMV1012 Technical data

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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 k, 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 kand 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
=50 65 Hz
=50 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 G
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 kand C = 2.2 µF.
Boldface limits apply at the temperature extremes.
Symbol Parameter Conditions
A
V
Gain f = 1 kHz,
R
SOURCE
=50
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 kand 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
=50 67 Hz
=50 150 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 kand 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
=50
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 kin 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 G
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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