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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 (CAD) 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: $11.40 2,442On 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	2,442On Order On Order Ship Dates Mfr. #: 2181BS08-U Stock: 0 On Order: 580 Expected 2027-01-08 1,862 Expected 2027-01-29 Factory Lead-Time: 17 Weeks	$11.40 $9.40 $8.38 $7.69 View $6.84 $6.75 $6.62 $6.44	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: $9.07 2,561On 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	2,561On Order On Order Ship Dates Mfr. #: 2181CS08-U Stock: 0 On Order: 503 Expected 2026-10-30 2,058 Expected 2026-11-05 Factory Lead-Time: 18 Weeks	$9.07 $6.96 $6.42 $5.83 View $5.56 $5.39 $5.33 $5.26	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: $16.47 132Expected 2027-01-18 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	132Expected 2027-01-18	$16.47 $13.84 $12.56 $11.64 View $10.70 $10.43 $10.28 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: $20.75 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	$20.75 $16.89 $14.34 $13.88 View $13.74 $12.93 $12.64 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: $11.30 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	$11.30 $9.04 $7.68 $7.34 View $6.81 $6.80 $6.60 $6.28	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: $13.51 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	$13.51 $10.47 $9.69 $8.86 View $8.45 $8.22 $7.99 Quote	Min.: 1 Mult.: 1			Class-AB	0.02 %	SIP-8	4 V	18 V	0 C	+ 70 C	Through Hole	2181	Tube