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1 of 9 102899

FEATURES

 128 position, digitally controlled poten-

tiometer

 Operates from a +5 volts power supply with

TTL signal inputs

 Wide analog voltage range of ±5 volts

 Low-power CMOS

 14-pin DIP or 16-pin SOIC for surface

mount applications

 Default position on power up sets wiper

position to 10% of active digital taps (3% of

the total end-to-end resistance)

 Operating temperature range

– Industrial temp. range: -40°C to +85°C

Resistance/Step

Resistance values Low End High End -3dB Point

DS1666-10 10K 24ȍ 152ȍ 1.0 MHz

DS1666-50 50K 122ȍ 759ȍ 200 kHz

DS1666-100 100K 243ȍ 1.519ȍ 100 kHz

PIN ASSIGNMENT

PIN DESCRIPTIONS

- High Terminal of Potentiometer

- Low Terminal of Potentiometer

- Wiper Terminal of Potentiometer

U/ D - Up/Down Control

INC - Wiper Movement Control

CS - Chip Select for Wiper Movement

NC - No Connection

- 5V Power Supply Input

GND - Ground

- Substrate Bias Voltage (0 to -5V)

DESCRIPTION

The DS1666 Audio Digital Resistor is a solid-state potentiometer composed of 127 digitally controlled

resistive elements. Between each resistive section and both ends of the potentiometer are tap points

multiplexed to the wiper. The position of the wiper on the resistance array is controlled by the CS , U/ D

and INC inputs. The taper of the DS1666 is shown in Figure 1.

DS1666

Audio Digital Resisto

www.dalsemi.com

U/D

INC

GND

14-PIN DIP (300 MIL)

See Mech. Drawings Section

16-PIN SOIC (300 MIL)

See Mech. Drawings Section

U/D

INC

GND

1 2 3 4 5 6 7 8 9

Resumo do Conteúdo

Página 1 - Audio Digital Resisto

1 of 9 102899FEATURES 128 position, digitally controlled poten-tiometer Operates from a +5 volts power supply withTTL signal inputs Wide analog vo

Página 2 - ANALOG CHARACTERISTICS

DS1666 2 of 9 102899The DS1666 is uniquely designed to provide a potentiometer that is pseudo-logarithmic rather than linearacross its entire range.

Página 3 - PIN DESCRIPTIONS

DS1666 3 of 9 102899PIN DESCRIPTIONSVCC - Power Supply. The DS1666 will support supply voltages ranging from +4.5 to +5.5 volts.GND - Ground Terminal

Página 4 - MODE SELECTION Figure 3

DS1666 4 of 9 102899BLOCK DIAGRAM Figure 2MODE SELECTION Figure 3

Página 5

DS1666 5 of 9 102899ABSOLUTE MAXIMUM RATINGS*Voltage on CS , INC , U/ D and U/ D and VCC Relative to Ground -0.5V to +7.0VVoltage on VH, VL and VW R

Página 6 - = 5.0V ± 10%)

DS1666 6 of 9 102899ANALOG RESISTOR CHARACTERISTICS (-40°C to +85°C; VCC = 5.0V ± 10%)PARAMETER SYMBOL MIN TYP MAX UNITS NOTESTotal Resistance“-10”“-5

Página 7 - AC TIMING Figure 4

DS1666 7 of 9 102899AC TIMING Figure 4NOTES:1. All Voltages are referenced to ground.2. Typical Values are for TA=25°C and nominal supply voltages.3.

Página 8 - DS1666 ORDERING INFORMATION

DS1666 8 of 9 102899DS1666 ORDERING INFORMATIONORDERINGNUMBERPACKAGE OPERATINGTEMPERATUREVERSIONDS1666-010 14L DIP -40°C TO +85°C10 kΩDS1666-050 14L D

Página 9 - DATA SHEET REVISION SUMMARY

DS1666 9 of 9 102899DATA SHEET REVISION SUMMARYThe following represent the key differences between 07/26/93 and 06/18/97 version of the DS1666 datashe

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Rainbow-electronics DS1666S Manual do Utilizador

Consulte online ou descarregue Manual do Utilizador para Hardware de computador Rainbow-electronics DS1666S. Rainbow Electronics DS1666S User Manual Manual do Utilizador

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