AD5204BRZ100 Analog Devices Inc, AD5204BRZ100 Datasheet

AD5204BRZ100

Manufacturer Part Number

AD5204BRZ100

Description

IC DGTL POT QUAD 100K 24-SOIC

Manufacturer

Analog Devices Inc

Datasheets

1.AD5204BRUZ50.pdf (20 pages)

2.AD5204BRZ100.pdf (11 pages)

Specifications of AD5204BRZ100

Temperature Coefficient

700 ppm/°C Typical

Taps

256

Resistance (ohms)

100K

Number Of Circuits

Memory Type

Volatile

Interface

SPI, 3-Wire Serial

Voltage - Supply

2.7 V ~ 5.5 V, ±2.3 V ~ 2.7 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

24-SOIC (7.5mm Width)

Resistance In Ohms

100K

End To End Resistance

100kohm

No. Of Steps

256

Resistance Tolerance

Â± 30%

Supply Voltage Range

2.7V To 5.5V

Control Interface

Serial, 3-Wire

No. Of Pots

Quad

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

GENERAL DESCRIPTION

The AD5204/AD5206 provides four-/six-channel, 256 position

digitally-controlled Variable Resistor (VR) devices. These de-

vices perform the same electronic adjustment function as a

potentiometer or variable resistor. Each channel of the AD5204/

AD5206 contains a fixed resistor with a wiper contact that taps

the fixed resistor value at a point determined by a digital code

loaded into the SPI-compatible serial-input register. The resis-

tance between the wiper and either endpoint of the fixed resistor

varies linearly with respect to the digital code transferred into

the VR latch. The variable resistor offers a completely program-

mable value of resistance between the A terminal and the wiper

or the B Terminal and the wiper. The fixed A-to-B terminal

resistance of 10 k , 50 k , or 100 k has a nominal tempera-

ture coefficient of 700 ppm/ C.

Each VR has its own VR latch which holds its programmed

resistance value. These VR latches are updated from an internal

serial-to-parallel shift register that is loaded from a standard

3-wire serial-input digital interface. Eleven data bits make up

the data word clocked into the serial input register. The first

three bits are decoded to determine which VR latch will be

loaded with the last eight bits of the data word when the CS

strobe is returned to logic high. A serial data output pin at

the opposite end of the serial register (AD5204 only) allows

simple daisy-chaining in multiple VR applications without

additional external decoding logic.

REV. 0

FEATURES

256 Position

Multiple Independently Programmable Channels

Potentiometer Replacement

10 k , 50 k , 100 k

3-Wire SPI-Compatible Serial Data Input

+2.7 V to +5.5 V Single Supply;

Power ON Midscale Preset

APPLICATIONS

Mechanical Potentiometer Replacement

Instrumentation: Gain, Offset Adjustment

Programmable Voltage-to-Current Conversion

Programmable Filters, Delays, Time Constants

Line Impedance Matching

Operation

AD5204—4-Channel

AD5206—6-Channel

2.7 V Dual Supply

An optional reset (PR) pin forces all the AD5204 wipers to the

midscale position by loading 80

The AD5204/AD5206 is available in both surface mount

(SOL-24), TSSOP-24 and the 24-lead plastic DIP package. All

parts are guaranteed to operate over the extended industrial

temperature range of –40 C to +85 C. For additional single,

dual, and quad channel devices, see the AD8400/AD8402/

AD8403 products.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

SDO

GND

CLK

SDI

GND

CLK

SDI

FUNCTIONAL BLOCK DIAGRAMS

POWER-

PRESET

POWER-

PRESET

SER

REG

SER

Digital Potentiometers

World Wide Web Site: http://www.analog.com

ADDR

DEC

ADDR

DEC

AD5204/AD5206

into the VR latch.

LATCH

RDAC

AD5204

4-/6-Channel

LATCH

RDAC

AD5206

SHDN

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AD5204BRZ100 Summary of contents

Page 1

FEATURES 256 Position Multiple Independently Programmable Channels AD5204—4-Channel AD5206—6-Channel Potentiometer Replacement 100 k 3-Wire SPI-Compatible Serial Data Input +2 +5.5 V Single Supply; Operation Power ON Midscale Preset APPLICATIONS Mechanical Potentiometer ...

Page 2

AD5204/AD5206–SPECIFICATIONS ELECTRICAL CHARACTERISTICS Parameter DC CHARACTERISTICS RHEOSTAT MODE Specifications Apply to All VRs 2 Resistor Differential NL 2 Resistor Nonlinearity Error 3 Nominal Resistor Tolerance Resistance Temperature Coefficient Nominal Resistance Match Wiper Resistance DC CHARACTERISTICS POTENTIOMETER DIVIDER MODE Specifications Apply ...

Page 3

Resistor Terminals have no limitations on polarity with respect to each other. 6 Guaranteed by design and not subject to production test. 7 Measured at the Ax terminals. All Ax terminals are open-circuited in shutdown mode. ...

Page 4

AD5204/AD5206 1 SDI CLK 0 RDAC LATCH LOAD OUT 0V Figure 1. Timing Diagram 1 SDI ...

Page 5

AD5204 PIN CONFIGURATION GND AD5204 (NOT TO SHDN 7 18 SCALE) SDI 8 17 CLK 9 16 SDO ...

Page 6

Performance Characteristics AD5204/AD5206 120 110 2.7V/ 100 2. –3.0 –2.0 –1.0 0 1.0 2.0 COMMON MODE – V Figure 4. Incremental Wiper ...

Page 7

DATA = 80 H –6 DATA = 40 H –12 DATA = 20 H –18 DATA = 10 H –24 DATA = 08 H –30 DATA = 04 H –36 DATA = 02 H –42 DATA = 01 H ...

Page 8

AD5204/AD5206 OPERATION The AD5204/AD5206 provides a four-/six-channel, 256-position digitally-controlled variable resistor (VR) device. Changing the programmed VR settings is accomplished by clocking in a 11- bit serial data word into the SDI (Serial Data Input) pin. The format of this ...

Page 9

The typical distribution of R from channel-to-channel matches BA within 1%. However, device-to-device matching is process lot dependent, having a 30% variation. The change in R temperature has a 700 ppm/ C temperature coefficient. PROGRAMMING THE POTENTIOMETER DIVIDER Voltage Output ...

Page 10

AD5204/AD5206 AD5204/AD5206 CS ADDR DECODE CLK SERIAL REGISTER SDI Figure 18. Equivalent Input Control Logic The target RDAC latch is loaded with the last eight bits of the serial data word completing one DAC update. Four separate 8- bit data ...

Page 11

MAX 0.200 (5.05) 0.125 (3.18) PIN 1 0.0118 (0.30) 0.0040 (0.10) PIN 1 0.006 (0.15) 0.002 (0.05) SEATING PLANE REV. 0 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 24-Lead Narrow Body PDIP (N-24) 1.275 (32.30) 1.125 (28.60) ...

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