19-3005; Rev 0; 11/03
Buffered, Fast-Settling, Dual, 12-/10-/8-Bit,
Voltage-Output DACs
General Description
The MAX5290–MAX5295 dual, 12-/10-/8-bit, voltage-
output digital-to-analog converters (DACs) offer
buffered outputs and a 3µs maximum settling time at
the 12-bit level. The DACs operate from a 2.7V to 3.6V
analog supply and a separate 1.8V to 3.6V digital sup-
ply. The 20MHz 3-wire serial interface is compatible
with SPI™, QSPI™, MICROWIRE™, and digital signal
processor (DSP) protocol applications. Multiple devices
can share a common serial interface in direct access or
daisy-chained configuration. The MAX5290–MAX5295
provide two multifunctional, user-programmable, digital
I/O ports. The externally selectable power-up states of
the DAC outputs are either zero scale, midscale, or full
scale. Software-selectable FAST and SLOW settling
modes decrease settling time in FAST mode, or reduce
supply current in SLOW mode.
The MAX5290/MAX5291 are 12-bit DACs, the MAX5292/
MAX5293 are 10-bit DACs, and the MAX5294/MAX5295
are 8-bit DACs. The MAX5290/ MAX5292/MAX5294 pro-
vide unity-gain-configured output buffers, while the
MAX5291/MAX5293/MAX5295 provide force-sense-con-
figured output buffers. The MAX5290– MAX5295 are
specified over the extended -40°C to +85°C temperature
range, and are available in space-saving 4mm x 4mm,
16-pin thin QFN and 6.5mm x 5mm, 14-pin and 16-pin
TSSOP packages.
Features
o
Dual, 12-/10-/8-Bit Serial DACs in 4mm x 4mm
Thin QFN and TSSOP Packages
o
3µs (max) 12-Bit Settling Time to 1/2 LSB
o
Integral Nonlinearity
1 LSB (max) MAX5290/MAX5291 A-Grade (12-Bit)
1 LSB (max) MAX5292/MAX5293 (10-Bit)
1/2 LSB (max) MAX5294/MAX5295 (8-Bit)
o
Guaranteed Monotonic, ±1 LSB (max) DNL
o
Two User-Programmable Digital I/O Ports
o
Single +2.7V to +3.6V Analog Supply
o
+1.8V to AV
DD
Digital Supply
o
20MHz 3-Wire SPI-/QSPI-/MICROWIRE- and
DSP-Compatible Serial Interface
o
Glitch-Free Outputs Power Up to Zero Scale,
Midscale or Full Scale
o
Unity-Gain- or Force-Sense-Configured Output
Buffers
MAX5290–MAX5295
Ordering Information
PART
MAX5290AEUD*
MAX5290BEUD
MAX5290AETE*
MAX5290BETE*
MAX5291AEUE*
MAX5291BEUE
MAX5291AETE*
MAX5291BETE*
MAX5292EUD
MAX5292ETE*
MAX5293EUE
MAX5293ETE*
MAX5294EUD
MAX5294ETE*
MAX5295EUE
MAX5295ETE*
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
14 TSSOP
14 TSSOP
16 Thin QFN-EP**
16 Thin QFN-EP**
16 TSSOP
16 TSSOP
16 Thin QFN-EP**
16 Thin QFN-EP**
14 TSSOP
16 Thin QFN-EP**
16 TSSOP
16 Thin QFN-EP**
14 TSSOP
16 Thin QFN-EP**
16 TSSOP
16 Thin QFN-EP**
Applications
Portable Instrumentation
Automatic Test Equipment (ATE)
Digital Offset and Gain Adjustment
Automatic Tuning
Programmable Voltage and Current Sources
Programmable Attenuators
Industrial Process Controls
Motion Control
Microprocessor (µP)-Controlled Systems
Power Amplifier Control
Fast Parallel-DAC to Serial-DAC Upgrades
Selector Guide and Pin Configurations appear at end of data
sheet.
SPI/QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
*Future
product—contact factory for availability. Specifications
are preliminary.
**EP
= Exposed paddle.
1
________________________________________________________________
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.
Buffered, Fast-Settling, Dual, 12-/10-/8-Bit,
Voltage-Output DACs
MAX5290–MAX5295
ABSOLUTE MAXIMUM RATINGS
AV
DD
to DV
DD
........................................................................±6V
AGND to DGND ..................................................................±0.3V
AV
DD
to AGND, DGND.............................................-0.3V to +6V
DV
DD
to AGND, DGND ............................................-0.3V to +6V
FB_, OUT_,
REF to AGND ........-0.3V to the lower of (AV
DD
+ 0.3V) or +6V
SCLK, DIN,
CS,
PU,
DSP
to DGND .......-0.3V to the lower of (DV
DD
+ 0.3V) or +6V
UPIO1, UPIO2
to DGND ...............-0.3V to the lower of (DV
DD
+ 0.3V) or +6V
Maximum Current into Any Pin .........................................±50mA
Continuous Power Dissipation (T
A
= +70°C)
14-Pin TSSOP (derate 9.1mW/°C above +70°C) .........727mW
16-Pin TSSOP (derate 9.4mW/°C above +70°C) .........755mW
16-Pin Thin QFN (derate 16.9mW/°C above +70°C) .1349mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Maximum Junction Temperature .....................................+150°C
Lead Temperature (soldering, 10s) .................................+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
(AV
DD
= 2.7V to 3.6V, DV
DD
= 1.8V to AV
DD
, AGND = 0, DGND = 0, V
REF
= 2.5V, R
L
= 10kΩ, C
L
= 100pF, T
A
= T
MIN
to T
MAX
, unless
otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
STATIC ACCURACY
MAX5290/MAX5291
Resolution
N
MAX5292/MAX5293
MAX5294/MAX5295
MAX5290A/MAX5291A (12-bit)
Integral Nonlinearity
INL
V
REF
= 2.5V at
AV
DD
= 2.7V
(Note 2)
MAX5290B/MAX5291B (12-bit)
MAX5292/MAX5293 (10-bit)
MAX5294/MAX5295 (8-bit)
Differential Nonlinearity
DNL
Guaranteed monotonic (Note 2)
MAX5290A/MAX5291A (12-bit), decimal code = 40
Offset Error
V
OS
MAX5290B/MAX5291B (12-bit), decimal code = 82
MAX5292/MAX5293 (10-bit), decimal code = 21
MAX5294/MAX5295 (8-bit), decimal code = 5
Offset-Error Drift
MAX5290A/MAX5291A (12-bit)
Gain Error
GE
Full-scale output
MAX5290B/MAX5291B (12-bit)
MAX5292/MAX5293 (10-bit)
MAX5294/MAX5295 (8-bit)
Gain-Error Drift
±10
±3
±0.5
1
±5
±5
±5
5
±4
±20
±5
±2
ppm of
FS/°C
LSB
±2
±0.5
±0.125
12
10
8
±1
±4
LSB
±1
±0.5
±1
±5
±25
±25
±25
ppm of
FS/°C
mV
LSB
Bits
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
2
_______________________________________________________________________________________
Buffered, Fast-Settling, Dual, 12-/10-/8-Bit,
Voltage-Output DACs
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= 2.7V to 3.6V, DV
DD
= 1.8V to AV
DD
, AGND = 0, DGND = 0, V
REF
= 2.5V, R
L
= 10kΩ, C
L
= 100pF, T
A
= T
MIN
to T
MAX
, unless
otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
Power-Supply Rejection
Ratio
REFERENCE INPUT
Reference Input Range
Reference Input
Resistance
Reference Leakage
Current
V
REF
R
REF
I
REF
Normal operation (no code dependence)
Shutdown mode
0.25
145
200
0.5
1
AV
DD
V
kΩ
µA
SYMBOL
PSRR
CONDITIONS
Full-scale output, AV
DD
= 2.7V to 3.6V
MIN
TYP
200
MAX
UNITS
µV/V
MAX5290–MAX5295
DAC OUTPUT CHARACTERISTICS
SLOW mode,
full scale
Output Voltage Noise
FAST mode,
full scale
Output Voltage Range
(Note 4)
DC Output Impedance
Short-Circuit Current
Power-Up Time
Wake-Up Time
Output OUT_ and FB_
Open-Circuit Leakage
Current
DIGITAL OUTPUTS (UPIO_)
Output High Voltage
Output Low Voltage
V
OH
V
OL
I
SOURCE
= 2mA
I
SINK
= 2mA
2.7V
≤
DV
DD
≤
3.6V
Input High Voltage
V
IH
DV
DD
< 2.7V
2.7V
≤
DV
DD
≤
3.6V
DV
DD
< 2.7V
±0.1
10
2.4
0.7 x
DV
DD
0.6
0.2
±1
V
DV
DD
-
0.5
0.4
V
V
AV
DD
= 3V, OUT_ to AGND, full scale, FAST mode
From DV
DD
applied, interface is functional
Coming out of shutdown, outputs settled
Programmed in shutdown mode, force-sense
outputs only
Unity-gain output
Force-sense output
Unity gain
Force sense
Unity gain
Force sense
0
0
38
45
30
40
0.01
60
85
67
140
110
AV
DD
AV
DD
/ 2
V
Ω
mA
µs
µs
µA
µV
RMS
DIGITAL INPUTS (SCLK,
CS,
DIN,
DSP,
UPIO_)
Input Low Voltage
Input Leakage Current
Input Capacitance
V
IL
I
IN
C
IN
V
µA
pF
_______________________________________________________________________________________
3
Buffered, Fast-Settling, Dual, 12-/10-/8-Bit,
Voltage-Output DACs
MAX5290–MAX5295
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= 2.7V to 3.6V, DV
DD
= 1.8V to AV
DD
, AGND = 0, DGND = 0, V
REF
= 2.5V, R
L
= 10kΩ, C
L
= 100pF, T
A
= T
MIN
to T
MAX
, unless
otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
PU INPUT
Input High Voltage
Input Low Voltage
Input Leakage Current
DYNAMIC PERFORMANCE
Voltage-Output Slew
Rate
SR
Fast mode
Slow mode
MAX5290/MAX5291 from code 322 to
code 4095 to 1/2 LSB
FAST mode
MAX5292/MAX5293 from code 82 to
code 1023 to 1/2 LSB
MAX5294/MAX5295 from code 21 to
code 255 to 1/2 LSB
MAX5290/MAX5291 from code 322 to
code 4095 to 1/2 LSB
SLOW mode
MAX5292/MAX5293 from code 82 to
code 1023 to 1/2 LSB
MAX5294/MAX5295 from code 21 to
code 255 to 1/2 LSB
FB_ Input Voltage
FB_ Input Current
Reference -3dB
Bandwidth (Note 6)
Digital Feedthrough
Digital-to-Analog Glitch
Impulse
DAC-to-DAC Crosstalk
Unity gain
Force sense
CS
= DV
DD
, code = zero scale, any digital input
from 0 to DV
DD
and DV
DD
to 0, f = 100kHz
Major carry transition
(Note 3)
200
150
0.1
2
15
0
3.6
1.6
2
1.5
1
3
2.5
2
3
3
2
µs
6
6
4
V
REF
/ 2
0.1
V
µA
kHz
nV-s
nV-s
nV-s
V/µs
V
IH-PU
V
IL-PU
I
IN-PU
PU still considered floating when connected to a
tri-state bus
DV
DD
-
200mV
200
±200
V
mV
nA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Voltage-Output Settling
Time (Note 5)
4
_______________________________________________________________________________________
Buffered, Fast-Settling, Dual, 12-/10-/8-Bit,
Voltage-Output DACs
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= 2.7V to 3.6V, DV
DD
= 1.8V to AV
DD
, AGND = 0, DGND = 0, V
REF
= 2.5V, R
L
= 10kΩ, C
L
= 100pF, T
A
= T
MIN
to T
MAX
, unless
otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
POWER REQUIREMENTS
Analog Supply Voltage
Range
Digital Supply Voltage
Range
AV
DD
DV
DD
SLOW mode, all digital inputs Unity gain
at DGND or DV
DD
, no load,
V
REF
= 2.5V
Force sense
Operating Supply
Current
I
AVDD
+
I
DVDD
FAST mode, all digital inputs
at DGND or DV
DD
, no load,
V
REF
= 2.5V
Unity gain
Force sense
2.7
1.8
0.55
0.9
0.85
1.2
3.6
AV
DD
0.8
1.2
2
mA
2
V
V
µA
mA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX5290–MAX5295
Shutdown Supply
Current
I
AVDD(SHDN)
No clocks, all digital inputs at DGND or DV
DD
, all
+
DACs in shutdown mode
I
DVDD(SHDN)
2.5
µA
TIMING CHARACTERISTICS—DSP Mode Disabled (3V, 3.3V Logic) (Figure 1)
(DVDD = 2.7V to 3.6V, DGND = 0, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
SCLK Frequency
SCLK Pulse-Width High
SCLK Pulse-Width Low
CS
Fall to SCLK Rise Setup Time
SCLK Rise to
CS
Rise Hold Time
SCLK Rise to
CS
Fall Setup Time
DIN to SCLK Rise Setup Time
DIN to SCLK Rise Hold Time
SCLK Rise to DOUTDC1 Valid
Propagation Delay
SCLK Fall to DOUT_ Valid
Propagation Delay
CS
Rise to SCLK Rise Hold Time
CS
Pulse-Width High
SYMBOL
f
SCLK
t
CH
t
CL
t
CSS
t
CSH
t
CS0
t
DS
t
DH
t
DO1
t
DO2
t
CS1
t
CSW
C
L
= 20pF, UPIO_ = DOUTDC1 mode
C
L
= 20pF, UPIO_ = DOUTDC0 or DOUTRB
mode
MICROWIRE and SPI modes 0 and 3
10
45
(Note 7)
(Note 7)
CONDITIONS
2.7V < DV
DD
< 3.6V
20
20
10
5
10
12
5
30
30
MIN
TYP
MAX
20
UNITS
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
_______________________________________________________________________________________
5
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