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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 (USD) 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: $7.92 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	$7.92 $6.53 $5.82 $5.34 View $4.75 $4.69 $4.60 $4.47	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: $6.30 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	$6.30 $4.83 $4.46 $4.05 View $3.86 $3.74 $3.70 $3.65	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: $11.44 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	$11.44 $9.61 $8.72 $8.08 View $7.43 $7.24 $7.14 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: $14.41 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	$14.41 $11.73 $9.96 $9.64 View $9.54 $8.98 $8.78 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: $7.85 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	$7.85 $6.28 $5.33 $5.10 View $4.73 $4.72 $4.58 $4.36	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: $9.38 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	$9.38 $7.27 $6.73 $6.15 View $5.87 $5.71 $5.55 Quote	Min.: 1 Mult.: 1			Class-AB	0.02 %	SIP-8	4 V	18 V	0 C	+ 70 C	Through Hole	2181	Tube