19-1316; Rev 1; 12/97
Low-Power, Dual, 12-Bit Voltage-Output DACs
with Serial Interface
_______________General Description
The MAX5154/MAX5155 low-power, serial, voltage-out-
put, dual 12-bit digital-to-analog converters (DACs)
consume only 500µA from a single +5V (MAX5154) or
+3V (MAX5155) supply. These devices feature Rail-to-
Rail
®
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 double-
buffered input organized as an input register followed
by a DAC register, which allows the input and DAC reg-
isters 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 out-
put pin for daisy chaining.
____________________________Features
o
o
o
o
o
o
o
o
o
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
______________Ordering Information
PART
MAX5154ACPE
MAX5154BCPE
MAX5154ACEE
MAX5154BCEE
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
16 Plastic DIP
16 Plastic DIP
16 QSOP
16 QSOP
INL
(LSB)
±1/2
±1
±1/2
±1
________________________Applications
Industrial Process Control
Digital Offset and Gain
Adjustment
Motion Control
Remote Industrial Controls
Microprocessor-
Controlled Systems
Automatic Test
Equipment (ATE)
Ordering Information continued at end of data sheet.
Pin Configuration appears at end of data sheet.
_________________________________________________________Functional Diagram
DOUT
CL
PDL
DGND
AGND
V
DD
REFA
OSA
DECODE
CONTROL
R
R
INPUT
REG A
DAC
REG A
DAC A
R
OUTA
OSB
16-BIT
SHIFT
REGISTER
SR
CONTROL
MAX5154
MAX5155
LOGIC
OUTPUT
SCLK
UPO
INPUT
REG B
DAC
REG B
DAC B
R
OUTB
CS
DIN
REFB
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.
1
________________________________________________________________
Maxim Integrated Products
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
For small orders, phone 408-737-7600 ext. 3468.
Low-Power, Dual, 12-Bit Voltage-Output DACs
with Serial Interface
MAX5154/MAX5155
ABSOLUTE MAXIMUM RATINGS
V
DD
to 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
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.
ELECTRICAL CHARACTERISTICS—MAX5154
(V
DD
= +5V ±10%, V
REFA
= V
REFB
= 2.048V, R
L
= 10kΩ, C
L
= 100pF, T
A
= 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).)
PARAMETER
STATIC PERFORMANCE
Resolution
Integral Nonlinearity
Differential Nonlinearity
Offset Error
Offset Tempco
Gain Error
Gain-Error Tempco
V
DD
Power-Supply
Rejection Ratio
REFERENCE INPUT
Reference Input Range
Reference Input Resistance
REF
R
REF
Minimum with code 1554 hex
Input code = 1FFE hex,
V
REF_
= 0.67Vp-p at 2.5V
DC
Input code = 0000 hex,
V
REF_
= (V
DD
- 1.4Vp-p) at 1kHz
SINAD
Input code = 1FFE hex,
V
REF_
= 1Vp-p at 1.25V
DC
, f = 25kHz
CL, PDL, CS,
DIN, SCLK
CL, PDL, CS,
DIN, SCLK
200
V
IN
= 0V to V
DD
0.001
8
±1
3
0.8
0
14
20
V
DD
- 1.4
V
kΩ
PSRR
Normalized to 2.048V
4.5V
≤
V
DD
≤
5.5V
INL
DNL
Vos
TCVos
(Note 1)
Guaranteed monotonic
Code = 6
Normalized to 2.048V
4
-0.2
4
20
260
±3
MAX5154A
MAX5154B
12
±1/2
±1
±1
±6
Bits
LSB
LSB
mV
ppm/°C
LSB
ppm/°C
µV/V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MULTIPLYING-MODE PERFORMANCE
Reference 3dB Bandwidth
Reference Feedthrough
Signal-to-Noise plus
Distortion Ratio
DIGITAL INPUTS
Input High Voltage
Input Low Voltage
Input Hysteresis
Input Leakage Current
Input Capacitance
V
IH
V
IL
V
HYS
I
IN
C
IN
V
V
mV
µA
pF
300
-82
75
kHz
dB
dB
2
_______________________________________________________________________________________
Low-Power, Dual, 12-Bit Voltage-Output DACs
with Serial Interface
ELECTRICAL CHARACTERISTICS—MAX5154 (continued)
(V
DD
= +5V ±10%, V
REFA
= V
REFB
= 2.048V, R
L
= 10kΩ, C
L
= 100pF, T
A
= 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).)
PARAMETER
Output High Voltage
Output Low Voltage
DYNAMIC PERFORMANCE
Voltage Output Slew Rate
Output Settling Time
Output Voltage Swing
OSA or OSB Input Resistance
Time Required to Exit Shutdown
Digital Feedthrough
Digital Crosstalk
POWER SUPPLIES
Positive Supply Voltage
Power-Supply Current
Power-Supply Current
in Shutdown
Reference Current in Shutdown
TIMING CHARACTERISTICS
SCLK Clock Period
SCLK Pulse Width High
SCLK Pulse Width Low
CS
Fall to SCLK Rise
Setup Time
SCLK Rise to
CS
Rise
Hold Time
SDI Setup Time
SDI Hold Time
SCLK Rise to DOUT
Valid Propagation Delay
SCLK Fall to DOUT
Valid Propagation Delay
SCLK Rise to
CS
Fall Delay
CS
Rise to SCLK Rise Hold
CS
Pulse Width High
t
CP
t
CH
t
CL
t
CSS
t
CSH
t
DS
t
DH
t
DO1
t
DO2
t
CS0
t
CS1
t
CSW
C
LOAD
= 200pF
C
LOAD
= 200pF
10
40
100
(Note 4)
100
40
40
40
0
40
0
80
80
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
V
DD
I
DD
(Note 3)
4.5
0.5
2
0
5.5
0.65
10
±1
V
mA
µA
µA
CS
= V
DD
, f
DIN
= 100kHz, V
SCLK
= 5Vp-p
R
OS_
SR
To 1/2LSB of full-scale, V
STEP
= 4V
Rail-to-rail (Note 2)
24
0.75
15
0 to V
DD
34
25
5
5
V/µs
µs
V
kΩ
µs
nV-s
nV-s
SYMBOL
V
OH
V
OL
I
SOURCE
= 2mA
I
SINK
= 2mA
CONDITIONS
MIN
V
DD
- 0.5
0.13
0.40
TYP
MAX
UNITS
V
V
DIGITAL OUTPUTS (DOUT, UPO)
MAX5154/MAX5155
I
DD(SHDN)
(Note 3)
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 V
DD
- 50mV. Guaranteed by PSRR test at the end
points.
Note 3:
Digital inputs are set to either V
DD
or DGND, code = 0000 hex, R
L
=
∞.
Note 4:
SCLK minimum clock period includes the rise and fall times.
_______________________________________________________________________________________
3
Low-Power, Dual, 12-Bit Voltage-Output DACs
with Serial Interface
MAX5154/MAX5155
ELECTRICAL CHARACTERISTICS—MAX5155
(V
DD
= +2.7V to +3.6V, V
REFA
= V
REFB
= 1.25V, R
L
= 10kΩ, C
L
= 100pF, T
A
= 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).)
PARAMETER
STATIC PERFORMANCE
Resolution
Integral Nonlinearity
Differential Nonlinearity
Offset Error
Offset Tempco
Gain Error
Gain-Error Tempco
V
DD
Power-Supply
Rejection Ratio
REFERENCE INPUT (VREF)
Reference Input Range
Reference Input Resistance
REF
R
REF
Minimum with code 1554 hex
Input code = 1FFE hex,
V
REF_
= 0.67Vp-p at 0.75V
DC
Input code = 0000 hex,
V
REF_
= (V
DD
- 1.4)Vp-p at 1kHz
SINAD
Input code = 1FFE hex,
V
REF_
= 1Vp-p at 1V
DC
, f = 15kHz
CL, PDL, CS,
DIN, SCLK
CL, PDL, CS,
DIN, SCLK
200
V
IN
= 0V to V
DD
0
8
I
SOURCE
= 2mA
I
SINK
= 2mA
V
DD
- 0.5
0.13
0.75
To 1/2LSB of full-scale, V
STEP
= 2.5V
Rail-to-rail (Note 6)
R
OS_
24
15
0 to V
DD
34
25
CS
= V
DD
, f
DIN
= 100kHz, V
SCLK
= 3Vp-p
5
5
0.4
±1
2.2
0.8
0
14
20
V
DD
- 1.4
V
kΩ
PSRR
Normalized to 1.25V
2.7V
≤
V
DD
≤
3.6V
INL
DNL
Vos
TCVos
(Note 5)
Guaranteed monotonic
Code = 10
Normalized to 1.25V
6.5
-0.2
6.5
40
320
±4
MAX5155A
MAX5155B
12
±1
±2
±1
±6
Bits
LSB
LSB
mV
ppm/°C
LSB
ppm/°C
µV/V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MULTIPLYING-MODE PERFORMANCE
Reference 3dB Bandwidth
Reference Feedthrough
Signal-to-Noise plus
Distortion Ratio
DIGITAL INPUTS
Input High Voltage
Input Low Voltage
Input Hysteresis
Input Leakage Current
Input Capacitance
DIGITAL OUTPUTS (DOUT, UPO)
Output High Voltage
Output Low Voltage
DYNAMIC PERFORMANCE
Voltage Output Slew Rate
Output Settling Time
Output Voltage Swing
OSA or OSB Input Resistance
Time Required for Valid
Operation after Shutdown
Digital Feedthrough
Digital Crosstalk
4
SR
V/µs
µs
V
kΩ
µs
nV-s
nV-s
VOH
VOL
V
V
VIH
VIL
VHYS
IIN
V
V
mV
µA
pF
300
-82
73
kHz
dB
dB
C
IN
_______________________________________________________________________________________
Low-Power, Dual, 12-Bit Voltage-Output DACs
with Serial Interface
ELECTRICAL CHARACTERISTICS—MAX5155 (continued)
(V
DD
= +2.7V to +3.6V, V
REFA
= V
REFB
= 1.25V, R
L
= 10kΩ, C
L
= 100pF, T
A
= 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).)
PARAMETER
POWER SUPPLIES
Positive Supply Voltage
Power-Supply Current
Power-Supply Current
in Shutdown
Reference Current in Shutdown
TIMING CHARACTERISTICS
SCLK Clock Period
SCLK Pulse Width High
SCLK Pulse Width Low
CS
Fall to SCLK Rise
Setup Time
SCLK Rise to
CS
Rise Hold Time
SDI Setup Time
SDI Hold Time
SCLK Rise to DOUT Valid
Propagation Delay
SCLK Fall to DOUT Valid
Propagation Delay
SCLK Rise to
CS
Fall Delay
CS
Rise to SCLK Rise Hold
CS
Pulse Width High
t
CP
t
CH
t
CL
t
CSS
t
CSH
t
DS
t
DH
t
DO1
t
DO2
t
CS0
t
CS1
t
CSW
C
LOAD
= 200pF
C
LOAD
= 200pF
10
40
100
(Note 4)
100
40
40
40
0
50
0
120
120
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
V
DD
I
DD
(Note 7)
2.7
0.45
1
0
3.6
0.6
8
±1
V
mA
µA
µA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX5154/MAX5155
I
DD (SHDN)
(Note 7)
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 V
DD
- 80mV. Guaranteed by PSRR test at the end
points.
Note 7:
Digital inputs are set to either V
DD
or DGND, code = 0000 hex, R
L
=
∞.
_______________________________________________________________________________________
5
