DP7132 datasheet(1/14 Pages) COPAL

Part #	DP7132

Description	16 Volt Digital Potentiometer

PDF	14 Pages

Scroll/Zoom	100%

Manufacturer	COPAL [Copal Electronics]

Direct Link	http://www.nidec-copal-electronics.com/e

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1 / 14 page

1

Characteristics subject to change without notice

Doc. No. MD-2124, Rev. E

DP7132

FEATURES

■ Single linear DP with 128 taps

■ End-to-end resistance of 10k , 50k

or 100k

■

■ Fast Up/Down wiper control mode

■ Non-volatile wiper setting storage

■ Automatic wiper setting recall at power-up

■ Digital Supply range (VCC): 2.7V to 5.5V

■ Analog Supply range (V+): +8V to +16V

■ Low Standby Current: 15µA

■ 100 Year wiper setting memory

■ Industrial Temperature range: -40oC to +85oC

■ RoHS-compliant 10-pin MSOP package

APPLICATIONS

■ LCD screen adjustment

■ Volume control

■ Mechanical potentiometer replacement

■ Gain adjustment

■ Line impedance matching

■ VCOM setting adjustments

DESCRIPTION

The DP7132 is a high voltage Digital Potentiometer

(DP)

with

non-volatile

wiper

setting

memory,

operating

like

a

mechanical

potentiometer.

The tap points between the 127 equal resistive elements

are connected to the wiper output via CMOS switches.

The switches are controlled by a 7-bit Wiper Control

Register (WCR). The wiper setting can be stored in a

7-bit non-volatile Data Register (DR). The WCR is

accessed via the 2-wire serial bus.

Upon power-up, the WCR is set to mid-scale (1000000).

After the power supply is stable, the contents of the DR

are transferred to the WCR and the wiper is returned to

the memorized setting.

The DP7132 has two voltage supplies: VCC, the digital

supply and V+, the analog supply. V+ can be much

higher than VCC, allowing for 16V analog operations.

The DP7132 can be used as a potentiometer or as a

two-terminal variable resistor.

SDA

SCL

A0

A1

VCC

CONTROL LOGIC AND

ADDRESS DECODE

128 TAP POSITION

DECODE CONTROL

7-BIT WIPER

CONTROL

REGISTER

(WCR)

7-BIT

NONVOLATILE

MEMORY

REGISTER

(DR)

V+

RH

RL

RW

127

0

BLOCK DIAGRAM

For Ordering Information details, see page 13.

16 Volt Digital Potentiometer (DP)

with 128 Taps and 2-wire Interface

2-wire (I2C-like) interface

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