DS1667-100 Dallas Semiconductor, DS1667-100 Datasheet

DS1667-100

Manufacturer Part Number

DS1667-100

Description

Manufacturer

Dallas Semiconductor

Datasheets

1.DS1667-100.pdf (10 pages)

2.DS1667-100.pdf (11 pages)

Specifications of DS1667-100

Case

DIP/20

Date_code

95+

Available stocks

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Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

DS1667-100

Manufacturer:

SONY

Quantity:

6 227

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FEATURES

DS1667-10: 10k 39 ohms

DS1667-50: 50k 195 ohms

DS1667-100: 100k 390 ohms

DESCRIPTION

The DS1667 is a dual-solid state potentiometer that is adjustable by digitally selected resistive elements.

Each potentiometer is composed of 256 resistive elements. Between each resistive section of each

potentiometer are tap points accessible to the wiper. The position of the wiper on the resistive array is set

by an 8-bit register that controls which tap point is connected to the wiper output. Each 8-bit register can

be read or written by sending or receiving data bits over a 3-wire serial port. In addition, the resistors can

be stacked such that a single potentiometer of 512 sections results. When two separate potentiometers are

used, the resolution of the DS1667 is equal to the resistance value divided by 256. When the

potentiometers are stacked end to end, the resistance value is doubled while the resolution remains the

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Two digitally controlled 256-position

potentiometers

Serial port provides means for setting and

reading both potentiometers

Resistors can be connected in series to

provide additional resolution

Default wiper position on power up is 50%

Resistive elements are temperature-

compensated to +20% end to end

Two high-gain, wide bandwidth operational

amplifiers

Low power CMOS design

Applications include analog-to-digital and

digital-to-analog converters, variable

oscillators, and variable gain amplifiers

20-pin DIP package or optional 20-pin SOIC

surface mount package

Operating temperature range

- Commercial: 0 C to 70 C

Resistance values:

RESOLUTION -3 dB POINT

1.1 MHz

200 kHz

100 kHz

1 of 10

Digital Resistor with OP AMP

PIN ASSIGNMENT

PIN DESCRIPTION

GND

L0, L1

H0, H1

W0, W1

SOUT

CLK

COUT

NINV0, NINVI

INV0, INVI

OUT0, OUT1

RST

20-Pin DIP (300-mil) and 20-Pin SOIC

NINV0

OUT1

INV0

GND

CLK

RST

See Mech. Drawings Section

- +5-Volt Supply

- Ground

- Low End of Resistor

- High End of Resistor

- Wiper End of Resistor

- Substrate Bias and OP

- Wiper for Stacked

- Serial Port Reset Input

- Serial Port Input/Output

- Serial Port Clock Input

- Cascade Serial Port

- Noninverting OP AMP

- Inverting OP AMP Input

- OP AMP Outputs

AMP Negative Supply

Configuration

Output

Input

INVI

NINVI

OUT0

SOUT

COUT

DS1667

032000

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