Products

Microphone Preamplifier

Model HT426E01

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High temperature 1/2-inch preamplifier

Nominal Microphone Diameter: 1/2"
Temperature Range: -40 to +257 °F (-40 to +125 °C)
Output Voltage: ±7 Vpk
Size - Length: 3.5 in (89 mm)

Specification Notes

[1] Typical.
[2] TEDS Capable Digital Memory and Communication, compliant with IEEE P1451.4
[3] Measured with a 12 pF reference microphone.
[4] At 22 °C
[5] At 120 °C
[6] Maximum.
[7] Limited to 120°C if ICP current > 4 mA
[1] Typical.
[8] See PCB Declaration of Conformance PS065 for details.

	English:	SI:
Performance
Nominal Microphone Diameter	1/2"	1/2"
Gain (re 1 kHz)	-0.06 dB	-0.06 dB	[1] [3]
Frequency Response (±0.1 dB) (re 1 kHz)	6.3 to 126000 Hz	6.3 to 126000 Hz	[3] [4]
Frequency Response (-3 dB) (re 1 kHz)	<1.58 Hz	<1.58 Hz	[3] [4]
Frequency Response (±0.1 dB) (re 1 kHz)	10 to 126000 Hz	10 to 126000 Hz	[3] [5]
Phase Linearity (±1 °)	63 to 40000 Hz	63 to 40000 Hz	[3]
Phase Linearity (<+10 °)	10 to 63 Hz	10 to 63 Hz	[3]
Electrical Noise(at 22 °C) (A-weight)	≤4.9 µV	≤4.9 µV	[3]
Electrical Noise(at 22 °C) (A-weight)	3.1 µV	3.1 µV	[1] [3]
Electrical Noise(at 22 °C) (Flat 20 Hz to 20 kHz)	≤13.4 µV	≤13.4 µV	[3]
Electrical Noise(at 22 °C) (Flat 20 Hz to 20 kHz)	9.3 µV	9.3 µV	[1] [3]
Electrical Noise(at 120 °C) (A-weight)	≤9.6	≤9.6	[3]
Electrical Noise(at 120 °C) (A-weight)	6.4	6.4	[1] [3]
Electrical Noise(at 120 °C) (Flat 20 Hz to 20 kHz)	≤37.1	≤37.1	[3]
Electrical Noise(at 120 °C) (Flat 20 Hz to 20 kHz)	24.7	24.7	[1] [3]
Distortion (3 V rms input at 1 kHz)	<-70 dB	<-70 dB	[3]
Output Slew Rate	2 V/µS	2 V/µS	[1]
TEDS Compliant	Yes	Yes	[2]
Environmental
Temperature Range (Operating)	-40 to +257 °F	-40 to +125 °C	[7]
Temperature Response	±0.1 dB	±0.1 dB	[6]
Humidity Range (Non-Condensing)	0 to 95 %RH	0 to 95 %RH
Humidity Sensitivity	±0.1 dB	±0.1 dB	[6]
Electrical
Excitation Voltage	20 to 32 VDC	20 to 32 VDC
Constant Current Excitation	2 to 10 mA	2 to 10 mA
Impedance (Input)	9.4 GOhm	9.4 GOhm	[1]
Capacitance (Input)	0.06 pF	0.06 pF	[1]
Output Bias Voltage	10 to 14 VDC	10 to 14 VDC
Impedance (Output)	<55 Ohm	<55 Ohm
Output Voltage (Maximum)	±7 Vpk	±7 Vpk
Physical
Housing Material	Stainless Steel	Stainless Steel
Size - Diameter	0.5 in	13 mm
Size - Length	3.5 in	89 mm
Weight	1.45 oz	41 g	[1]
Electrical Connector	BNC Jack	BNC Jack
Mounting Thread (Microphone to Preamplifier)	0.4606 - 60 UNS	11.7 mm - 60 UNS