AS

“АLFA RPAR”

Joint Stock Company ALFA

Riga, Latvia www.alfarzpp.lv; alfa@alfarzpp.lv

2019 v.1

1

AS2164

AS2164 - Quad voltage exponentially controlled amplifier (VCA)

Features

AS2164

-

four high performance VCAs in a single package

-

0,02% THD

-

0,02% THD

-

no external trimming

-

120 dB gain range

-

0,07 dB gain matching (unity gain)

-

class A or AB operation

-

protection from negaive supply turned OFF

Applications

PDIP-16, 300mil, 2.54 mm

-

Remote, Automatic, or Computer Volume Controls

-

Automotive Volume/Balance/Faders

AS2164D

-

Audio Mixers

-

Compressor/Limiters/Compandors

-

Noise Reduction Systems

-

Automatic Gain Controls

-

Voltage Controlled Filters

-

Special Sound Processors

SOIC-16, 150mil, 1.27 mm

General Description

AS2164 contains four independent voltage controlled amplifiers (VCAs) in a single package. High

performance (100 dB dynamic range, 0.02% THD) is provided at a very low cost-per-VCA, resulting in

excellent value for cost sensitive gain control applications. Each VCA offers current input and output for

maximum design flexibility, and a ground referenced

–33 mV/dB control port.

All channels are closely matched to within 0,07 dB at unity gain, and 0,24 dB at 40 dB of attenuation. A 120 dB

gain range is possible.

A single resistor tailors operation between full Class A and AB modes.

AS2164 is internally protected in situations where negative supply is turned OFF.

The AS2164 will operate over a wide supply voltage range of

SOIC packages,

PART NUMBER

PACKAGE

BODY SIZE (NOM)

AS2164

PDIP-16

300mil, 2.54 mm pitch

AS2164D

SOIC-16

150mil, 1.27 mm pitch

Pin Information

Figure 1 Block and Connection Diagram

Pin No

Pin

Name

Description

1

MODE

Mode select

2

Input current 1

3

Control voltage 1

4

Output current 1

5

Output current 2

6

Control voltage 2

7

Input current 2

8

GND

Ground

9

Negative supply

10

Input current 3

11

Control voltage 3

12

Output current 3

13

Output current 4

14

Control voltage 4

15

Input current 4

16

Positive supply

+Vcc

MODE

GND

Power

Supply

and

Class

A/AB

Biasing

Circuit

VCA1

VCA3

VCA2

VCA4

1

2

3

4

5

6

7

8

16 15 14 13 12

11 10

9