DFG-30445-000 Knowles Acoustics, DFG-30445-000 Datasheet - Page 5

• Manufacturer Part Number: DFG-30445-000
• Description: MIC SUPER CARTOID UNI DIRECT FG
• Manufacturer: Knowles Acoustics
• Series: DFGr
• Type: Electret Condenserr

Specifications of DFG-30445-000

• Sensitivity: -69dB ±4dB
• Voltage - Rated: 1.3V
• Current: 50µA
• Size / Dimension: Circular - 2.56mm Dia x 2.69mm H
• S/n Ratio: -
• Filter Type: 13pF
• Impedance: 1.7K Ohm
• Frequency: 100Hz ~ 5kHz
• Termination: Solder Pads
• Direction: Unidirectional
• Port Location: Bottom and Top
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 423-1150

DFG‐30851‐000 typical performance:
The 1kHz polar pattern for DFG‐30851‐000 measured at 1m in an anechoic chamber is approximately bi‐directional. Bi‐
directional microphones are more sensitive to position relative to the mouth compared to uni‐directional microphones, but
noise‐canceling performance is better. The polar curves below represent actual data from a typical microphone (output
amplitude in dB relative to 0 degrees).
The typical frequency response curves are based on the average performance of several microphones. For a near
field application such as a headset, the designer may wish to add a low‐pass filter to the microphone output to
flatten the rising response at high frequencies.
The microphone was suspended on lead wires for the typical tests as shown.
AMERICAS:
Knowles Acoustics
1151 Maplewood Drive
Itasca, IL 60143
U.S.A.
Phone: [phone]
Fax: [phone]
EUROPE:
Knowles Acoustics
York Road, Burgess Hill
West Sussex, RH15 9TT
England
Phone: [phone]
Fax: [phone]
www.knowlesacoustics.com
JAPAN:
Knowles Electronics Japan, KK
2-2-16, Sangenjaya,
Setagaya-ku, Tokyo
154-0024 JAPAN
Tel. [phone]
Fax: [phone]
Zero
Application Note
180 degrees
ASIA:
Knowles Acoustics
5F, No. 129, Lane 235, Bauchiau Rd.
Shindian City, Taipei 231, Taiwan
Republic of China
Phone: [phone]
Fax: [phone]
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