DS1855B-010+ datasheet, PDF - EEWORLD Datasheet

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DS1855B-010+: DescriptionIC POT/MEM DIG NV 10/10K 16BGA; CategoryAnalog mixed-signal IC converter; File Size549KB，21 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html; Environmental Compliance

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DS1855B-010+ Overview

IC POT/MEM DIG NV 10/10K 16BGA

DS1855B-010+ Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Maker	Maxim
Parts packaging code	BGA
package instruction	LBGA, BGA16,4X4,20
Contacts	16
Reach Compliance Code	compliant
ECCN code	EAR99
Other features	NONVOLATILE MEMORY; OTHER RESISTOR VALUE IS 10000 OHM WITH 100 TAP POSITION
Nominal bandwidth	1 kHz
control interface	2-WIRE SERIAL
Converter type	DIGITAL POTENTIOMETER
JESD-30 code	S-PBGA-B16
JESD-609 code	e3
length	4 mm
Humidity sensitivity level	3
Number of functions	2
Number of positions	256
Number of terminals	16
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	LBGA
Encapsulate equivalent code	BGA16,4X4,20
Package shape	SQUARE
Package form	GRID ARRAY, LOW PROFILE
Peak Reflow Temperature (Celsius)	260
power supply	3/5 V
Certification status	Not Qualified
resistance law	LINEAR
Maximum resistor tolerance	20%
Maximum resistor terminal voltage	3.3 V
Minimum resistor terminal voltage	-0.3 V
Maximum seat height	1.5 mm
Nominal supply voltage	3 V
surface mount	YES
Nominal temperature coefficient	750 ppm/°C
Temperature level	INDUSTRIAL
Terminal surface	NOT SPECIFIED
Terminal form	BALL
Terminal pitch	1 mm
Terminal location	BOTTOM
Maximum time at peak reflow temperature	30
Nominal total resistance	10000 Ω
width	4 mm

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DS1855

Dual Nonvolatile Digital Potentiometer

and Secure Memory

FEATURES



Two Linear Taper Potentiometers

−

DS1855-010 (One 10kΩ, 100 Position

and One 10kΩ, 256 Position)

−

DS1855-020 (One 10kΩ, 100 Position

and One 20kΩ, 256 Position)

−

DS1855-050 (One 10kΩ, 100 Position

and One 50kΩ, 256 Position)

−

DS1855-100 (One 10kΩ, 100 Position

and One 100kΩ, 256 Position)

256 Bytes of EEPROM Memory

Access to Data and Potentiometer Control

via a 2-Wire Interface

External Write-Protect Pin to Protect Data

and Potentiometer Settings

Data and Potentiometer Settings Also Can

Be Write Protected Through Software

Control

Nonvolatile Wiper Storage

Operates from 3V or 5V Supplies

14-Pin TSSOP, 16-Ball CSBGA, and

14-Pin Flip-Chip Packages

Industrial Operating Temperature:

-40ºC to +85ºC

PIN CONFIGURATIONS

SDA

SCL

GND

Vcc



TSSOP (173 mils)

Top View

CSBGA (4mm x 4mm)

Flip Chip (100 mils x 100 mils) (Not

Shown)

DESCRIPTION

The DS1855 dual nonvolatile (NV) digital potentiometer and secure memory consists of one 100-position

linear taper potentiometer, one 256-position linear taper potentiometer, 256 bytes of EEPROM memory,

and a 2-wire interface. The DS1855, which features a new software write protect, is an upgrade of the

DS1845. The DS1855 provides an ideal method for setting bias voltages and currents in control

applications using a minimum of circuitry. The EEPROM memory allows a user to store configuration or

calibration data for a specific system or device as well as provide control of the potentiometer wiper

settings. Any type of user information may reside in the first 248 bytes of this memory. The next two

addresses of EEPROM memory are for potentiometer settings and the remaining 6 bytes of memory are

reserved. These reserved and potentiometer registers should not be used for data storage. Access to this

EEPROM is via an industry-standard 2-wire bus. The interface I/O pins consist of SDA and SCL. The

wiper position of the DS1855, as well as EEPROM data, can be write protected through hardware using

the write-protect input pin (WP) or software using the 2-wire interface.

1 of 21

19-6586; Rev 2; 1/13

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