Rainbow Electronics MAX5155 User Manual

_______________General Description

The MAX5154/MAX5155 low-power, serial, voltage-out­put, dual 12-bit digital-to-analog converters (DACs)
consume only 500µA from a single +5V (MAX5154) or
+3V (MAX5155) supply. These devices feature Rail-to­Rail®output swing and are available in a space-saving
16-pin QSOP package. To maximize the dynamic
range, the DAC output amplifiers are configured with an
internal gain of +2V/V.

The 3-wire serial interface is SPI™/QSPI™ and
Microwire™ compatible. Each DAC has a double­buffered input organized as an input register followed
by a DAC register, which allows the input and DAC reg­isters to be updated independently or simultaneously
with a 16-bit serial word. Additional features include
programmable shutdown (2µA), hardware-shutdown
lockout (PDL), a separate reference voltage input for
each DAC that accepts AC and DC signals, and an
active-low clear input (CL) that resets all registers and
DACs to zero. These devices provide a programmable
logic pin for added functionality, and a serial-data out­put pin for daisy chaining.

________________________Applications

Industrial Process Control Remote Industrial Controls
Digital Offset and Gain Microprocessor-

Adjustment Controlled Systems
Motion Control Automatic Test

Equipment (ATE)

____________________________Features

♦ 12-Bit Dual DAC with Internal Gain of +2V/V
♦ Rail-to-Rail Output Swing
♦ 12µs Settling Time
♦ Single-Supply Operation: +5V (MAX5154)

+3V (MAX5155)

♦ Low Quiescent Current: 500µA (normal operation)

2µA (shutdown mode)

♦ SPI/QSPI and Microwire Compatible
♦ Available in Space-Saving 16-Pin QSOP Package
♦ Power-On Reset Clears Registers and DACs

to Zero

♦ Adjustable Output Offset

MAX5154/MAX5155

Low-Power, Dual, 12-Bit Voltage-Output DACs

with Serial Interface

________________________________________________________________

Maxim Integrated Products

1

19-1316; Rev 1; 12/97

______________Ordering Information

Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.

SPI and QSPI are trademarks of Motorola, Inc.
Microwire is a trademark of National Semiconductor Corp.

For free samples & the latest literature: http://www.maxim-ic.com, or phone [phone]
For small orders, phone [phone] ext. 3468.

REFA

V

DD

AGND

DGNDPDLCL

DOUT

16-BIT

SHIFT

REGISTER

SR

CONTROL

INPUT
REG A

INPUT
REG B

SCLK

UPO REFB

DINCS

DAC B

DAC A

DAC

REG A

LOGIC

OUTPUT

DECODE

CONTROL

DAC

REG B

MAX5154
MAX5155

OUTB

R

R

R

R

OSB

OUTA

OSA

_________________________________________________________Functional Diagram

Ordering Information continued at end of data sheet.
Pin Configuration appears at end of data sheet.

INL

(LSB)

PIN-PACKAGETEMP. RANGEPART

±1/2

±1

±1/2

16 QSOP

16 Plastic DIP

16 Plastic DIP0°C to +70°C
0°C to +70°C
0°C to +70°CMAX5154ACEE

MAX5154BCPE

MAX5154ACPE

±116 QSOP0°C to +70°CMAX5154BCEE

MAX5154/MAX5155

Low-Power, Dual, 12-Bit Voltage-Output DACs
with Serial Interface

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS—MAX5154

(VDD= +5V ±10%, V

REFA

= V

REFB

= 2.048V, RL= 10kΩ, CL= 100pF, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are

at T

A

= +25°C (OS_ tied to AGND for a gain of +2V/V).)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

VDDto AGND............................................................-0.3V to +6V

V

DD

to DGND ...........................................................-0.3V to +6V

AGND to DGND..................................................................±0.3V

OSA, OSB to AGND........................(AGND - 4V) to (V

DD

+ 0.3V)

REF_, OUT_ to AGND.................................-0.3V to (V

DD

+ 0.3V)

Digital Inputs (SCLK, DIN, CS, CL, PDL)

to DGND............................................................(-0.3V to +6V)

Digital Outputs (DOUT, UPO)

to DGND................................................-0.3V to (V

DD

+ 0.3V)

Maximum Current into Any Pin.........................................±20mA

Continuous Power Dissipation (T

A

= +70°C)

Plastic DIP (derate 10.5mW/°C above +70°C) ...........842mW

QSOP (derate 8.30mW/°C above +70°C)...................667mW

CERDIP (derate 10.00mW/°C above +70°C)..............800mW

Operating Temperature Ranges

MAX515_ _C_ E .................................................0°C to +70°C

MAX515_ _E_ E ..............................................-40C° to +85°C

MAX515_ _MJE.............................................-55°C to +125°C

Storage Temperature Range.............................-65°C to +150°C

Lead Temperature (soldering, 10sec).............................+300°C

(Note 1)

Input code = 0000 hex,
V

REF_

= (VDD- 1.4Vp-p) at 1kHz

Input code = 1FFE hex,
V

REF_

= 0.67Vp-p at 2.5V

DC

4.5V ≤ VDD≤ 5.5V

Minimum with code 1554 hex

Normalized to 2.048V

Guaranteed monotonic
Code = 6
Normalized to 2.048V

dB-82Reference Feedthrough

kHz300Reference 3dB Bandwidth

kΩ14 20R

REF

Reference Input Resistance

REFReference Input Range V0 VDD- 1.4

±1

LSB

±1/2

INL

Bits12Resolution

Integral Nonlinearity

PSRR

VDDPower-Supply
Rejection Ratio

µV/V20 260

ppm/°C4Gain-Error Tempco

LSB±1DNLDifferential Nonlinearity

mV±6V

os

Offset Error

ppm/°C4TCV

os

Offset Tempco

LSB-0.2 ±3Gain Error

MAX5154A
MAX5154B

CONDITIONS UNITSMIN TYP MAXSYMBOLPARAMETER

Input code = 1FFE hex,
V

REF_

= 1Vp-p at 1.25VDC, f = 25kHz

dB75SINAD

Signal-to-Noise plus
Distortion Ratio

CL, PDL, CS, DIN, SCLK

V0.8V

IL

Input Low Voltage

VIN= 0V to V

DD

µA0.001 ±1I

IN

Input Leakage Current

pF8C

IN

Input Capacitance

mV200V

HYS

Input Hysteresis

CL, PDL, CS, DIN, SCLK

V3V

IH

Input High Voltage

STATIC PERFORMANCE

REFERENCE INPUT

MULTIPLYING-MODE PERFORMANCE

DIGITAL INPUTS

MAX5154/MAX5155

Low-Power, Dual, 12-Bit Voltage-Output DACs

with Serial Interface

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS—MAX5154 (continued)

(VDD= +5V ±10%, V

REFA

= V

REFB

= 2.048V, RL= 10kΩ, CL= 100pF, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are

at T

A

= +25°C (OS_ tied to AGND for a gain of +2V/V).)

Note 1: Accuracy is specified from code 6 to code 4095.
Note 2: Accuracy is better than 1LSB for V

OUT

_ greater than 6mV and less than VDD- 50mV. Guaranteed by PSRR test at the end

points.

Note 3: Digital inputs are set to either V

DD

or DGND, code = 0000 hex, RL= ∞.

Note 4: SCLK minimum clock period includes the rise and fall times.

CS = VDD, f

DIN

= 100kHz, V

SCLK

= 5Vp-p

I

SOURCE

= 2mA

(Note 4)

(Note 3)

(Note 3)

ns

Rail-to-rail (Note 2)

To 1/2LSB of full-scale, V

STEP

= 4V

40

I

SINK

= 2mA

t

CL

SCLK Pulse Width Low

CONDITIONS

ns40t

CH

SCLK Pulse Width High

nV-s5Digital Crosstalk

nV-s5Digital Feedthrough

µs25Time Required to Exit Shutdown

kΩ24 34R

OS_

OSA or OSB Input Resistance

ns100t

CP

SCLK Clock Period

µA0 ±1Reference Current in Shutdown

µA2 10I

DD(SHDN)

Power-Supply Current
in Shutdown

mA0.5 0.65I

DD

Power-Supply Current

V4.5 5.5V

DD

Positive Supply Voltage

ns40t

DS

SDI Setup Time

ns

VVDD- 0.5V

OH

Output High Voltage

0t

CSH

SCLK Rise to CS Rise
Hold Time

ns40t

CSS

CS Fall to SCLK Rise
Setup Time

C

LOAD

= 200pF

V0 to V

DD

Output Voltage Swing

µs15Output Settling Time

C

LOAD

= 200pF

ns80

V0.13 0.40V

OL

Output Low Voltage

V/µs0.75SRVoltage Output Slew Rate

UNITSMIN TYP MAXSYMBOLPARAMETER

t

DO2

SCLK Fall to DOUT
Valid Propagation Delay

ns80t

DO1

SCLK Rise to DOUT
Valid Propagation Delay

ns0t

DH

SDI Hold Time

ns100t

CSW

CS Pulse Width High

ns40t

CS1

CS Rise to SCLK Rise Hold

ns10t

CS0

SCLK Rise to CS Fall Delay

DIGITAL OUTPUTS (DOUT, UPO)

DYNAMIC PERFORMANCE

POWER SUPPLIES

TIMING CHARACTERISTICS

Resolution

MAX5154/MAX5155

Low-Power, Dual, 12-Bit Voltage-Output DACs
with Serial Interface

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS—MAX5155

(VDD= +2.7V to +3.6V, V

REFA

= V

REFB

= 1.25V, RL= 10kΩ, CL= 100pF, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values

are at T

A

= +25°C (OS_ pins tied to AGND for a gain of +2V/V).)

nV-s5Digital Crosstalk

CS = VDD, f

DIN

= 100kHz, V

SCLK

= 3Vp-p

nV-s5Digital Feedthrough

µs25

Time Required for Valid
Operation after Shutdown

Input code = 1FFE hex,
V

REF_

= 1Vp-p at 1VDC, f = 15kHz

dB73SINAD

Signal-to-Noise plus
Distortion Ratio

(Note 5)

Input code = 0000 hex,
V

REF_

= (VDD- 1.4)Vp-p at 1kHz

Input code = 1FFE hex,
V

REF_

= 0.67Vp-p at 0.75V

DC

CL, PDL, CS, DIN, SCLK

2.7V ≤ VDD≤ 3.6V

Minimum with code 1554 hex

Normalized to 1.25V

Guaranteed monotonic
Code = 10
Normalized to 1.25V

V0.8V

IL

Input Low Voltage

VIN= 0V to V

DD

µA0 ±1I

IN

Input Leakage Current

pF8

C

IN

Input Capacitance

mV200V

HYS

Input Hysteresis

CL, PDL, CS, DIN, SCLK

V

dB-82Reference Feedthrough

kHz300Reference 3dB Bandwidth

2.2V

IH

Input High Voltage

kΩ14 20R

REF

Reference Input Resistance

±2

MAX5155A
MAX5155B

LSB

±1

INL

Bits12

Integral Nonlinearity

PSRR

VDDPower-Supply
Rejection Ratio

µV/V40 320

ppm/°C6.5Gain-Error Tempco

LSB±1DNLDifferential Nonlinearity

mV±6V

os

Offset Error

ppm/°C6.5TCV

os

Offset Tempco

LSB-0.2 ±4Gain Error

Rail-to-rail (Note 6)

I

SOURCE

= 2mA

kΩ24 34R

OS_

OSA or OSB Input Resistance

V0 to V

DD

Output Voltage Swing

VVDD- 0.5V

OH

Output High Voltage

CONDITIONS UNITSMIN TYP MAXSYMBOLPARAMETER

REFReference Input Range V0 VDD- 1.4

DIGITAL OUTPUTS (DOUT, UPO)

I

SINK

= 2mA V0.13 0.4V

OL

Output Low Voltage

To 1/2LSB of full-scale, V

STEP

= 2.5V µs15Output Settling Time

V/µs0.75SRVoltage Output Slew Rate

REFERENCE INPUT (VREF)

MULTIPLYING-MODE PERFORMANCE

DIGITAL INPUTS

STATIC PERFORMANCE

DYNAMIC PERFORMANCE

MAX5154/MAX5155

Low-Power, Dual, 12-Bit Voltage-Output DACs

with Serial Interface

_______________________________________________________________________________________ 5

Note 5: Accuracy is specified from code 10 to code 4095.
Note 6: Accuracy is better than 1LSB for V

OUT

greater than 6mV and less than VDD- 80mV. Guaranteed by PSRR test at the end

points.

Note 7: Digital inputs are set to either V

DD

or DGND, code = 0000 hex, RL= ∞.

ELECTRICAL CHARACTERISTICS—MAX5155 (continued)

(VDD= +2.7V to +3.6V, V

REFA

= V

REFB

= 1.25V, RL= 10kΩ, CL= 100pF, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values

are at T

A

= +25°C (OS_ pins tied to AGND for a gain of +2V/V).)

C

LOAD

= 200pF ns120t

DO2

SCLK Fall to DOUT Valid
Propagation Delay

ns100t

CSW

CS Pulse Width High

ns40t

CS1

CS Rise to SCLK Rise Hold

ns10t

CS0

SCLK Rise to CS Fall Delay

CONDITIONS UNITS

(Note 7) mA0.45 0.6I

DD

Power-Supply Current

(Note 7) µA1 8I

DD (SHDN)

Power-Supply Current
in Shutdown

µA

MIN TYP MAX

0 ±1Reference Current in Shutdown

(Note 4) ns100

SYMBOLPARAMETER

t

CP

SCLK Clock Period

ns40t

CH

SCLK Pulse Width High

ns40t

CL

SCLK Pulse Width Low

ns40t

CSS

CS Fall to SCLK Rise
Setup Time

ns0t

CSH

SCLK Rise to CS Rise Hold Time

ns50t

DS

SDI Setup Time

ns0t

DH

SDI Hold Time

C

LOAD

= 200pF ns120t

DO1

SCLK Rise to DOUT Valid
Propagation Delay

V2.7 3.6V

DD

Positive Supply Voltage

POWER SUPPLIES

TIMING CHARACTERISTICS