1/2-inch icp® preamplifier with gain and filter switches (for prepolarized microphones)

Microphone Preamplifier

Model 426A11

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1/2-inch ICP® preamplifier with gain and filter switches (for prepolarized microphones)

ICP(R) low noise preamplifier with gain, filters, and TEDS

Nominal Microphone Diameter: 1/2"
Temperature Range: -4 to +158 °F (-20 to +70 °C)
Output Voltage: 5 Vpk
Size - Length: 4.25 in (108.0 mm)

Specification Notes

[1] Typical.
[2] TEDS Capable Digital Memory and Communication, compliant with IEEE P1451.4
[3] Measured with an 18 pF reference microphone.
[4] Per IEC 61672-1:2002 "Sound Level Meters" Class 1
[5] Overload detection is in front of filters. Positive pulses at output indicate overload.
[6] Error from ideal A weight re 1 kHz.
[7] 20 Hz to 20 kHz
[8] re 1 kHz
[9] Without Filter or +20 dB gain engaged.
[1] Typical.
[5] Overload detection is in front of filters. Positive pulses at output indicate overload.
[10] See PCB Declaration of Conformance PS074 for details.

	English:	SI:
Performance
Nominal Microphone Diameter	1/2"	1/2"
Gain (re 1 kHz)	-0.16 dB	-0.16 dB	[1] [3]
Filter Type (3-pole Butterworth)	High Pass	High Pass	[5]
Electrical Filter Corner Frequency	20 Hz	20 Hz	[1]
Filter Type	A-weight	A-weight	[4] [5]
Frequency Response (±0.2 dB)	5 to 125000 Hz	5 to 125000 Hz	[6] [8]
Frequency Response (±1.6 dB) (A-weight Filter Engaged)	12.6 to 20000 Hz	12.6 to 20000 Hz	[6] [8]
Frequency Response (±1.0 dB) (A-weight Filter Engaged)	20 to 10000 Hz	20 to 10000 Hz	[1] [8]
Frequency Response (±0.3 dB) (+20 dB Gain)	4 to 25000 Hz	4 to 25000 Hz	[8]
Phase Linearity (-3 to +10 °)	5 to 20 Hz	5 to 20 Hz	[3] [9]
Phase Linearity (±3 °)	20 to 20000 Hz	20 to 20000 Hz	[3] [9]
Electrical Noise (A Weight, 0 dB Gain)	<7.5 µV	<7.5 µV	[3] [7]
Electrical Noise (A Weight, 0 dB Gain)	5 µV	5 µV	[1] [3] [7]
Electrical Noise (0 dB Gain)	<5.7 µV	<5.7 µV	[3] [7]
Electrical Noise (0 dB Gain)	4.2 µV	4.2 µV	[1] [3] [7]
Electrical Noise (+20 dB Gain)	<60 µV	<60 µV	[3] [7]
Electrical Noise (+20 dB Gain)	40 µV	40 µV	[1] [3] [7]
Electrical Noise (High Pass Filter, 0 dB Gain)	<5.6 µV	<5.6 µV	[3] [7]
Electrical Noise (High Pass Filter, 0 dB Gain)	3.7 µV	3.7 µV	[1] [3] [7]
Distortion (5 V pk output at 1 kHz)	<-60 dB	<-60 dB	[3]
Output Slew Rate	2 V/µS	2 V/µS	[1]
TEDS Compliant	Yes	Yes	[2]
Environmental
Temperature Range (Operating)	-4 to +158 °F	-20 to +70 °C
Temperature Response	<0.05 dB	<0.05 dB
Humidity Range (Non-Condensing)	0 to 95 %RH	0 to 95 %RH
Humidity Sensitivity	<0.05 dB	<0.05 dB
Electrical
Excitation Voltage	22 to 34 VDC	22 to 34 VDC
Constant Current Excitation	4 to 20 mA	4 to 20 mA
Impedance (Input)	10 GOhm	10 GOhm	[1]
Capacitance (Input)	0.28 pF	0.28 pF	[1]
Output Bias Voltage	15 VDC	15 VDC	[1]
Maximum Input Voltage (0 dB gain)	5 Vpk	5 Vpk	[5]
Maximum Input Voltage (+20 dB gain)	0.5 Vpk	0.5 Vpk	[5]
Impedance (at 1 kHz ) (Output)	<50 Ohm	<50 Ohm
Output Voltage (Maximum)	5 Vpk	5 Vpk
Physical
Housing Material	Stainless Steel	Stainless Steel
Size - Diameter	0.5 in	12.7 mm
Size - Length	4.25 in	108.0 mm
Weight	1.5 oz	43.7 gm
Electrical Connector	BNC Jack	BNC Jack
Mounting Thread (Microphone to Preamplifier)	0.4606 - 60 UNS	11.7 mm - 60 UNS