2180-series Pre-trimmed Blackmer® Voltage-Controlled Amplifiers

	TT2180 Series Basic Application Circuit

Twilight Technology 2180-series pre-trimmed Blackmer voltage controlled amplifiers (VCAs) ICs are high-performance current-in/current-out devices with two opposing-polarity, voltage-sensitive control ports. They offer wide-range exponential control of gain and attenuation with low signal distortion. The parts are trimmed during wafer processing to minimize THD and control-voltage feedthrough. After packaging, the parts are tested and graded based on the degree to which the trim survived packaging. No further adjustment is required to achieve the guaranteed distortion and feedthrough performance.

Twilight Technology Blackmer VCAs are the successors to the original dbx line of VCAs. To overcome the problems related to limited GBW product, the 218X series of VCAs, was developed in a dielectrically isolated process, and has topological enhancements Twilight Technology minimize the effect of non-linearities in the VCA drive circuitry on high frequency distortion. These VCAs are equal or superior to their predecessors in every regard, and in particular, do not exhibit the rising distortion at higher frequencies characteristic of VCAs built on a junction isolated process.

The 2180 series of voltage controlled amplifiers delivers performance unobtainable through any conventional process, integrated or discrete. The parts are available in three grades, allowing the user to optimize cost vs. performance. The 2180 VCA comes in a 8-pin single-in-line (SIP) package.

Features Wide dynamic range: > 120 dB Wide gain range: > 130 dB Exponential (dB) gain control Low distortion: < 0.01 % (2180A) Wide gain-bandwidth: 20 MHz Dual gain-control ports (pos/neg) Pin-compatible with 2150-series Applications Faders Panners Compressors Expanders Equalizers Filters Oscillators Automation systems

Basic Specifications (typical) Control Constant: ±6.1 mV/dB (both positive and negative-sense control available) Gain Range: <-100 dB to >+40 dB Output Noise: -98 dBV (0 dB gain) Dynamic Range: 120 dB Power supply voltage: ±15 V. Supply current: 2.4 mA THD (see chart below)

For complete specifications, download a copy of the 2180 Datasheet. Datasheets are provided in Adobe's PDF format. You need to have Adobe Acrobat Reader installed on your computer to view the file. To obtain a free copy of Acrobat Reader follow the link at right.

	Model	Grade	% THD at 1 V 0 dB gain		Package	Order Number	Pricing (1000)	Min Order Quantity	Reference
	TT2180	A	0.005 Typ	0.01 Max	8 Pin DIP	No longer available Use RoHS compliant version			Datasheet App Notes Device Models
		B	0.01 Typ	0.02 Max		No longer available Use RoHS compliant version
		C	0.03 Typ	0.05 Max		2180CD	Call	25
	2180 RoHS Compliant	A	0.005 Typ	0.01 Max	8 Pin DIP	2180AD	Call	25
		B	0.01 Typ	0.02 Max		2180BD	Call	25
		C	0.03 Typ	0.05 Max		2180CD	Call	25

Minimum Order Quantity is one tube full. Parts must be ordered in multiples of the MOQ.
Samples are available for qualified applicants.
Pricing is subject to change.

We offer a demonstration system  which simplifies evaluating the performance of a 2180 Series VCA IC. The 2180 Demo Board is a completely assembled and tested circuit board with XLR connectors for signal input and output and a 3-pin header for connection to an external regulated DC power supply (not included). Contact us for more information.