DS1856B-025+T&R datasheet, PDF

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DS1856B-025+T&R: DescriptionDigital Potentiometer, 2 Func, 2500ohm, 2-wire Serial Control Interface, 256 Positions, PBGA16, 4 X 4 MM, 1 MM PITCH, LEAD FREE, CSBGA-16; CategoryAnalog mixed-signal IC converter; File Size603KB，31 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html; Environmental Compliance

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DS1856B-025+T&R Overview

Digital Potentiometer, 2 Func, 2500ohm, 2-wire Serial Control Interface, 256 Positions, PBGA16, 4 X 4 MM, 1 MM PITCH, LEAD FREE, CSBGA-16

DS1856B-025+T&R 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,
Contacts	16
Reach Compliance Code	compliant
ECCN code	EAR99
Other features	NONVOLATILE MEMORY; OTHER RESISTOR VALUE IS 2500 OHM; IT CAN ALSO OPERATE FROM A 5V SUPPLY
control interface	2-WIRE SERIAL
Converter type	DIGITAL POTENTIOMETER
JESD-30 code	S-PBGA-B16
JESD-609 code	e1
length	4 mm
Number of functions	2
Number of positions	256
Number of terminals	16
Maximum operating temperature	95 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	LBGA
Package shape	SQUARE
Package form	GRID ARRAY, LOW PROFILE
Peak Reflow Temperature (Celsius)	250
Certification status	Not Qualified
resistance law	LINEAR
Maximum resistor terminal voltage	3.6 V
Minimum resistor terminal voltage	-0.3 V
Maximum seat height	1.5 mm
Nominal supply voltage	3.3 V
surface mount	YES
Nominal temperature coefficient	50 ppm/°C
Temperature level	INDUSTRIAL
Terminal surface	TIN SILVER COPPER
Terminal form	BALL
Terminal pitch	1 mm
Terminal location	BOTTOM
Maximum time at peak reflow temperature	NOT SPECIFIED
Nominal total resistance	2500 Ω
width	4 mm
Base Number Matches	1

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Rev 1; 4/05

Dual, Temperature-Controlled Resistors with Inter-

nally Calibrated Monitors and Password Protection

General Description

The DS1856 dual, temperature-controlled, nonvolatile

(NV) variable resistors with three monitors consists of

two 256-position, linear, variable resistors; three analog

monitor inputs (MON1, MON2, MON3); and a direct-to-

digital temperature sensor. The device provides an

ideal method for setting and temperature-compensating

bias voltages and currents in control applications using

minimal circuitry. The variable resistor settings are

stored in EEPROM memory and can be accessed over

the 2-wire serial bus.

Relative to other members of the family, the DS1856 is

essentially a DS1859 with a DS1852-friendly memory

map. In particular, the DS1856 can be configured so

the 128 bytes of internal Auxiliary EEPROM memory is

mapped into Main Device Table 00h and Table 01h,

maintaining compatibility between both the

DS1858/DS1859 and the DS1852. The DS1856 also

features password protection equivalent to the DS1852,

further enhancing compatibility between the two.

Features

♦

SFF-8472 Compatible

♦

Five Monitored Channels (Temperature, V

MON1, MON2, MON3)

♦

Three External Analog Inputs (MON1, MON2, MON3)

That Support Internal and External Calibration

♦

Scalable Dynamic Range for External Analog Inputs

♦

Internal Direct-to-Digital Temperature Sensor

♦

Alarm and Warning Flags for All Monitored

Channels

♦

Two Linear, 256-Position, Nonvolatile Temperature-

Controlled Variable Resistors

♦

Resistor Settings Changeable Every 2°C

♦

Three Levels of Security

♦

Access to Monitoring and ID Information

Configurable with Separate Device Addresses

♦

2-Wire Serial Interface

♦

Two Buffers with TTL/CMOS-Compatible Inputs and

Open-Drain Outputs

♦

Operates from a 3.3V or 5V Supply

♦

-40°C to +95°C Operating Temperature Range

DS1856

Applications

Optical Transceivers

Optical Transponders

Instrumentation and Industrial Controls

RF Power Amps

Diagnostic Monitoring

Ordering Information

PART

DS1856E-050

DS1856E-050/T&R

DS1856B-050

RES0/RES1

RESISTANCE

(kΩ)

50/50

PIN-PACKAGE

16 TSSOP

16-Ball CSBGA

Typical Operating Circuit

= 3.3V

4.7kΩ

2-WIRE

INTERFACE

Tx-FAULT

4.7kΩ

LOS

IN2

N.C.

GND

MON3

MON2

MON1

SDA

SCL

OUT1

IN1

OUT2

DECOUPLING

CAPACITOR

Ordering Information continued at end of data sheet.

+Denotes lead free.

*Future

product—contact factory for availability.

T&R denotes tape-and-reel.

All parts operate at the -40°C to +95°C temperature range.

0.1µF

Pin Configurations

TOP VIEW

SDA 1

IN1

SCL

SCL 2

OUT1 3

IN1 4

16 V

15 H1

14 L1

TO LASER BIAS

CONTROL

TO LASER

MODULATION

CONTROL

DS1856

OUT2

SDA

11 Rx POWER*

10 Tx POWER*

9 Tx BIAS*

DIAGNOSTIC

INPUTS

N.C.

IN2

OUT1

MON3

DS1856

13 H0

12 L0

11 MON3

10 MON2

MON1

OUT2 5

IN2 6

GND

MON1

MON2

N.C. 7

GND 8

*SATISFIES SFF-8472 COMPATIBILITY

CSBGA (4mm x 4mm)

1.0mm PITCH

TSSOP

______________________________________________

Maxim Integrated Products

For pricing delivery, and ordering information please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

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Description	Digital Potentiometer, 2 Func, 2500ohm, 2-wire Serial Control Interface, 256 Positions, PBGA16, 4 X 4 MM, 1 MM PITCH, LEAD FREE, CSBGA-16	Digital Potentiometer, 2 Func, 2500ohm, 2-wire Serial Control Interface, 256 Positions, PDSO16, TSSOP-16	Digital Potentiometer, 2 Func, 10000ohm, 2-wire Serial Control Interface, 256 Positions, PBGA16, 4 X 4 MM, 1 MM PITCH, LEAD FREE, CSBGA-16	Digital Potentiometer, 2 Func, 2500ohm, 2-wire Serial Control Interface, 256 Positions, PBGA16, 4 X 4 MM, 1 MM PITCH, LEAD FREE, CSBGA-16	Digital Potentiometer, 2 Func, 2500ohm, 2-wire Serial Control Interface, 256 Positions, PDSO16, LEAD FREE, TSSOP-16	Digital Potentiometer, 2 Func, 2500ohm, 2-wire Serial Control Interface, 256 Positions, PBGA16, 4 X 4 MM, 1 MM PITCH, CSBGA-16	Digital Potentiometer, 2 Func, 2500ohm, 2-wire Serial Control Interface, 256 Positions, PDSO16, LEAD FREE, TSSOP-16	Digital Potentiometer, 2 Func, 10000ohm, 2-wire Serial Control Interface, 256 Positions, PDSO16, LEAD FREE, TSSOP-16
Is it lead-free?	Lead free	Contains lead	Lead free	Lead free	Lead free	Contains lead	Lead free	Lead free
Is it Rohs certified?	conform to	incompatible	conform to	conform to	conform to	incompatible	conform to	conform to
Parts packaging code	BGA	TSSOP	BGA	BGA	TSSOP	BGA	TSSOP	TSSOP
package instruction	LBGA,	TSSOP,	LBGA,	LBGA,	TSSOP,	LBGA,	TSSOP,	TSSOP,
Contacts	16	16	16	16	16	16	16	16
Reach Compliance Code	compliant	compli	compliant	compliant	compliant	compliant	compliant	compliant
ECCN code	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
Other features	NONVOLATILE MEMORY; OTHER RESISTOR VALUE IS 2500 OHM; IT CAN ALSO OPERATE FROM A 5V SUPPLY	NONVOLATILE MEMORY; OTHER RESISTOR VALUE IS 2500 OHM; IT CAN ALSO OPERATE FROM A 5V SUPPLY	NONVOLATILE MEMORY; OTHER RESISTOR VALUE IS 2500 OHM; IT CAN ALSO OPERATE FROM A 5V SUPPLY	NONVOLATILE MEMORY; OTHER RESISTOR VALUE IS 2500 OHM; IT CAN ALSO OPERATE FROM A 5V SUPPLY	NONVOLATILE MEMORY; OTHER RESISTOR VALUE IS 2500 OHM; IT CAN ALSO OPERATE FROM A 5V SUPPLY	NONVOLATILE MEMORY; OTHER RESISTOR VALUE IS 2500 OHM; IT CAN ALSO OPERATE FROM A 5V SUPPLY	NONVOLATILE MEMORY; OTHER RESISTOR VALUE IS 2500 OHM; IT CAN ALSO OPERATE FROM A 5V SUPPLY	NONVOLATILE MEMORY; OTHER RESISTOR VALUE IS 2500 OHM; IT CAN ALSO OPERATE FROM A 5V SUPPLY
control interface	2-WIRE SERIAL	2-WIRE SERIAL	2-WIRE SERIAL	2-WIRE SERIAL	2-WIRE SERIAL	2-WIRE SERIAL	2-WIRE SERIAL	2-WIRE SERIAL
Converter type	DIGITAL POTENTIOMETER	DIGITAL POTENTIOMETER	DIGITAL POTENTIOMETER	DIGITAL POTENTIOMETER	DIGITAL POTENTIOMETER	DIGITAL POTENTIOMETER	DIGITAL POTENTIOMETER	DIGITAL POTENTIOMETER
JESD-30 code	S-PBGA-B16	R-PDSO-G16	S-PBGA-B16	S-PBGA-B16	R-PDSO-G16	S-PBGA-B16	R-PDSO-G16	R-PDSO-G16
JESD-609 code	e1	e0	e1	e1	e3	e0	e3	e3
length	4 mm	5 mm	4 mm	4 mm	5 mm	4 mm	5 mm	5 mm
Number of functions	2	2	2	2	2	2	2	2
Number of positions	256	256	256	256	256	256	256	256
Number of terminals	16	16	16	16	16	16	16	16
Maximum operating temperature	95 °C	95 °C	95 °C	95 °C	95 °C	95 °C	95 °C	95 °C
Minimum operating temperature	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	LBGA	TSSOP	LBGA	LBGA	TSSOP	LBGA	TSSOP	TSSOP
Package shape	SQUARE	RECTANGULAR	SQUARE	SQUARE	RECTANGULAR	SQUARE	RECTANGULAR	RECTANGULAR
Package form	GRID ARRAY, LOW PROFILE	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	GRID ARRAY, LOW PROFILE	GRID ARRAY, LOW PROFILE	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	GRID ARRAY, LOW PROFILE	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	250	240	250	250	260	225	260	260
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
resistance law	LINEAR	LINEAR	LINEAR	LINEAR	LINEAR	LINEAR	LINEAR	LINEAR
Maximum resistor terminal voltage	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V
Minimum resistor terminal voltage	-0.3 V	-0.3 V	-0.3 V	-0.3 V	-0.3 V	-0.3 V	-0.3 V	-0.3 V
Maximum seat height	1.5 mm	1.1 mm	1.5 mm	1.5 mm	1.1 mm	1.5 mm	1.1 mm	1.1 mm
Nominal supply voltage	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V
surface mount	YES	YES	YES	YES	YES	YES	YES	YES
Nominal temperature coefficient	50 ppm/°C	50 ppm/°C	50 ppm/°C	50 ppm/°C	50 ppm/°C	50 ppm/°C	50 ppm/°C	50 ppm/°C
Temperature level	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
Terminal surface	TIN SILVER COPPER	TIN LEAD	TIN SILVER COPPER	TIN SILVER COPPER	MATTE TIN	TIN LEAD	MATTE TIN	MATTE TIN
Terminal form	BALL	GULL WING	BALL	BALL	GULL WING	BALL	GULL WING	GULL WING
Terminal pitch	1 mm	0.65 mm	1 mm	1 mm	0.65 mm	1 mm	0.65 mm	0.65 mm
Terminal location	BOTTOM	DUAL	BOTTOM	BOTTOM	DUAL	BOTTOM	DUAL	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
Nominal total resistance	2500 Ω	2500 Ω	10000 Ω	2500 Ω	2500 Ω	2500 Ω	2500 Ω	10000 Ω
width	4 mm	4.4 mm	4 mm	4 mm	4.4 mm	4 mm	4.4 mm	4.4 mm
Base Number Matches	1	1	1	1	1	1	1	1
Maker	Maxim	-	Maxim	Maxim	Maxim	Maxim	Maxim	Maxim

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