Home Up

Legacy VCAs
 

 

 

 

Discontinued Legacy VCA Products

Note that the 2180 and 2181 Series VCA ICs offer superior performance at similar prices

 to the 2150 Series. Furthermore, the 2180 and 2181 Series ICs are pin-compatible with

 the 2150 Series.

 

 

 

THAT2150A

VCA   Discontinued

THAT2151

VCA   Discontinued

THAT2155

VCA   Discontinued

 

 +++ Not to be used in new designs +++

  

P/N

% THD at 1 V, 0 dB gain

Package

Quantity per Packing Unit

2151

0.004 Typ

0.02 Max

8 Pin SIP

25

2150A

0.005 Typ

0.03 Max

25

2155

0.006 Typ

0.03 Max

25

 

Substituting THAT 218x series VCAs for 215x series VCAs in Existing Designs

All 2181Lx VCAs are pin-compatible with all 215x ICs, requiring only that you delete one resistor and change the value of one other. No circuit board (PCB) changes are required to support a 2181Lx VCA in place of a 215x-series part. One minor potential inconvenience is that the 2181Lx package is a little taller than the 215x; however, we do not anticipate a problem in practical application. 

To simplify things, below we have provided a chart of recommended conversions between 215x parts and 2181Lx parts. Of course, you may wish to consider the full range of available 218x ICs at this time, but the chart below shows the default choices. The 2181Lx parts are of course also available as RoHS lead free compliant part.

Current 215x series IC

2151

2150A

2155

Recommended 218x series IC

2181LA

2181LB

2181LC

Recommended RoHS 218x series IC

2181LA 08-U

2181LB 08-U

2181LC 08-U

 

Model

Grade

% THD at 1 V
0 dB gain

Package

Order Number

Quantity per Packing Unit

2181

A

0.0025 Typ

0.005 Max

8 Pin SIP

2181LA

25

8 Pin SO

2181SA

95

B

0.004 Typ

0.008 Max

8 Pin SIP

2181LB

25

8 Pin SO

2181SB

95

C

0.005 Typ

0.02 Max

8 Pin SIP

2181LC

25

8 Pin SO

2181SC

95

2181

Lead-free

A

0.0025 Typ

0.005 Max

8 Pin SIP

2181LA 08-U

25

8 Pin SO

2181SA 08-T

95

B

0.004 Typ

0.008 Max

8 Pin SIP

2181LB 08-U

25

8 Pin SO

2181SB 08-T

95

C

0.005 Typ

0.02 Max

8 Pin SIP

2181LC 08-U

25

8 Pin SO

2181SC 08-T

95

Moreover, we offer a variation of the 218x series -- the 2180Lx ICs, which are pre-trimmed for low distortion during wafer processing. In many applications, by switching to one of these ICs you can eliminate a trim pot and two resistors from your current designs, along with the time and labor required to adjust the trim. The 2180Lx ICs are a little more expensive than their 2181Lx counterparts, but the savings in trim components and time more than offsets the additional cost.

For complete specifications on THAT VCAs download the product datasheets:

2181series datasheet        2180 series datasheet        2150 series datasheet 

For some specific advice on converting from the 215x-series to one of the 218x-series VCAs, read our Design Note 137, "Substituting THAT2180- and 2181-Series VCAs for THAT2150-Series VCAs in Existing Designs" .

 

 

For pricing and more information: icsales@cedos.com

To download detailed datasheets in PDF format, please click on the picture.

 

Send mail to webmaster@cedos.com with questions or comments about this web site.
Copyright © 2007 CEDOS Electronics
Last modified: 04/12/08