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2181 Blackmer® Voltage-Controlled Amplifier ICs

THAT Corporation 2181 Blackmer® Voltage-Controlled Amplifier ICs are high-performance current-in/current-out devices. The ICs feature two opposing polarity, voltage-sensitive control ports, and offer wide-range exponential control of gain and attenuation with low signal distortion. The parts are selected after packaging based primarily on after-trim THD and control-voltage feedthrough performance.

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Select	Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (PEN) Filter the results in the table by unit price based on your quantity.	Qty.	RoHS	ECAD Model	Class	THD plus Noise	Package / Case	Supply Voltage - Min	Supply Voltage - Max	Minimum Operating Temperature	Maximum Operating Temperature	Mounting Style	Series	Packaging
	Audio Amplifiers Trimmable VCA .008% THD 2181BS08-U THAT 1: S/30.83 2,457On Order End of Life	Mfr. Part # 2181BS08-U Mouser Part # 887-2181BS08-U End of Life	THAT	Audio Amplifiers Trimmable VCA .008% THD Learn More about THAT 2181 ics	Datasheet	2,457On Order On Order Ship Dates Mfr. #: 2181BS08-U Stock: 0 On Order: 7 Expected 9/24/2026 588 Expected 1/8/2027 1,862 Expected 1/29/2027 Factory Lead-Time: 17 Weeks	S/30.83 S/25.42 S/22.65 S/20.79 View S/18.49 S/18.26 S/17.91 S/17.40	Min.: 1 Mult.: 1			Class-AB	0.02 %	SOIC-8	4 V	18 V	0 C	+ 70 C	SMD/SMT	2181	Tube
	Audio Amplifiers Trimmable VCA .02% THD 2181CS08-U THAT 1: S/24.52 2,661On Order End of Life	Mfr. Part # 2181CS08-U Mouser Part # 887-2181CS08-U End of Life	THAT	Audio Amplifiers Trimmable VCA .02% THD Learn More about THAT 2181 ics	Datasheet	2,661On Order On Order Ship Dates Mfr. #: 2181CS08-U Stock: 0 On Order: 603 Expected 10/30/2026 2,058 Expected 11/5/2026 Factory Lead-Time: 18 Weeks	S/24.52 S/18.80 S/17.36 S/15.76 View S/15.03 S/14.56 S/14.40 S/14.21	Min.: 1 Mult.: 1			Class-AB	0.05 %	SOIC-8	4 V	18 V	0 C	+ 70 C	SMD/SMT	2181	Tube
	Audio Amplifiers Trimmable VCA .005% THD 2181AS08-U THAT 1: S/44.53 142Expected 1/18/2027 End of Life	Mfr. Part # 2181AS08-U Mouser Part # 887-2181AS08-U End of Life	THAT	Audio Amplifiers Trimmable VCA .005% THD Learn More about THAT 2181 ics	Datasheet	142Expected 1/18/2027	S/44.53 S/37.41 S/33.94 S/31.45 View S/28.92 S/28.18 S/27.79 Quote	Min.: 1 Mult.: 1			Class-AB	0.01 %	SOIC-8	4 V	18 V	0 C	+ 70 C	SMD/SMT	2181	Tube
	Audio Amplifiers Trimmable VCA SIP-8 2181AL08-U THAT 1: S/56.09 Lead-Time 3 Weeks End of Life	Mfr. Part # 2181AL08-U Mouser Part # 887-2181AL08-U End of Life	THAT	Audio Amplifiers Trimmable VCA SIP-8 Learn More about THAT 2181 ics	Datasheet	Lead-Time 3 Weeks	S/56.09 S/45.66 S/38.77 S/37.52 View S/37.13 S/34.95 S/34.18 Quote	Min.: 1 Mult.: 1			Class-AB	0.01 %	SIP-8	4 V	18 V	0 C	+ 70 C	Through Hole	2181	Tube
	Audio Amplifiers Trimmable VCA SIP-8 2181CL08-U THAT 1: S/30.56 Lead-Time 5 Weeks End of Life	Mfr. Part # 2181CL08-U Mouser Part # 887-2181CL08-U End of Life	THAT	Audio Amplifiers Trimmable VCA SIP-8 Learn More about THAT 2181 ics	Datasheet	Lead-Time 5 Weeks	S/30.56 S/24.44 S/20.75 S/19.85 View S/18.41 S/18.37 S/17.83 S/16.97	Min.: 1 Mult.: 1			Class-AB	0.05 %	SIP-8	4 V	18 V	0 C	+ 70 C	Through Hole	2181	Tube
	Audio Amplifiers Trimmable VCA SIP-8 2181BL08-U THAT 1: S/36.51 N/A End of Life	Mfr. Part # 2181BL08-U Mouser Part # 887-2181BL08-U End of Life	THAT	Audio Amplifiers Trimmable VCA SIP-8 Learn More about THAT 2181 ics	Datasheet	N/A	S/36.51 S/28.30 S/26.20 S/23.94 View S/22.85 S/22.23 S/21.60 Quote	Min.: 1 Mult.: 1			Class-AB	0.02 %	SIP-8	4 V	18 V	0 C	+ 70 C	Through Hole	2181	Tube