DESCRIPTION

The MPA 001 is a high performance Electret Microphone assembled into a rugged, compact package along with a matched compensation preamplifier. The preamplifier assures an essentially flat transducer response from 240 Hz to 4000 Hz, while providing approximately 20 dB of voltage gain. The enclosure is 100% metal construction, providing a high degree of shielding integrity.

Each assembly is 100% tested for conformance to the MIN./MAX. specification limits at 25°C.

FEATURES

Low power consumption:
55 µA (typ) at 4.5 VDC.

Low Output Impedance:
Suitable for driving up to 30 feet of cable.

Compact, fully shielded package.

Connectorized for ease of installation.

May be powered from unregulated battery supply.

ELECTRICAL SPECIFICATIONS, TA = 25°C, VS = 4.5 VOLTS DC
Parameter
Test Condition
Units
Min.
Typical
Max.
Transducer GainInput = 80 dB SPL at 1 kHz
dBV, RMS.
-36
-33
-30
Frequency Response Input = 80 dB SPL, 240 Hz to 4000 Hz. Reference = 1000 Hz
dB
-1
+1
SensitivityAcoustic Input Level adjusted to produce 7 dB SINAD at output at 1 kHz (measured in 240 Hz to 4000 Hz BW)
dB SPL
30
33
Dynamic RangeMax. Acoustic Input for THD 1%
dB SPL
100
Current DrainVS = 4.5 VDC

VS = 6.0 VDC

µA

µA
50
55

85
75
Output Impedance240 Hz to 4000 Hz
OHMS
5000
Output PedestalNo Input
VDC
0.55
Supply Voltage Threshold RL > 100 K; VS reduced until Transducer voltage drops 1 dB.
VDC
3.0
Supply Rejection240 Hz to 4000 Hz
dB
45

ABSOLUTE MAXIMUM RATINGS

ParameterAbsolute Maximum(1)
Supply Voltage+50 VDC, -0.3 VDC
Output Current(2) 10 mA
Acoustic Input130 dB SPL
Temperature-40°C to +85°C.
Humidity95%, Non - Condensing

Notes:

(1) Operation of this device beyond any of these Absolute Maximum limits may cause permanent damage.

(2) The output is DC coupled. In normal operation, any load connection should be a high resistance or AC coupled.
Ordering Information:
Basic Part Number:MPA001
Dash Number (length)XXXX
Examples:
3.5 inch cableMPA001-0035
18 inch cableMPA001-0180
For Pricing and to Place an Order, contact:

PROBE Science, Inc. PO Box 70048 Pasadena, CA 91117-7048

1(626) 795-5785 (PH) 1(626) 795-4785 (FAX)