General Description
The MAX5290MAX5295 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 SPITM, QSPITM, MICROWIRETM, and digital signal
processor (DSP) protocol applications. Multiple devices
can share a common serial interface in direct access or
daisy-chained configuration. The MAX5290MAX5295
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.
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
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
MAX5290MAX5295
Buffered, Fast-Settling, Dual, 12-/10-/8-Bit,
Voltage-Output DACs
________________________________________________________________ Maxim Integrated Products
1
Ordering Information
19-3005; Rev 0; 11/03
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.
*Future product--contact factory for availability. Specifications
are preliminary.
**EP = Exposed paddle.
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.
PART
TEMP RANGE
PIN-PACKAGE
MAX5290AEUD*
-40
°C to +85°C
14 TSSOP
MAX5290BEUD
-40
°C to +85°C
14 TSSOP
MAX5290AETE*
-40
°C to +85°C
16 Thin QFN-EP**
MAX5290BETE*
-40
°C to +85°C
16 Thin QFN-EP**
MAX5291AEUE*
-40
°C to +85°C
16 TSSOP
MAX5291BEUE
-40
°C to +85°C
16 TSSOP
MAX5291AETE*
-40
°C to +85°C
16 Thin QFN-EP**
MAX5291BETE*
-40
°C to +85°C
16 Thin QFN-EP**
MAX5292EUD
-40
°C to +85°C
14 TSSOP
MAX5292ETE*
-40
°C to +85°C
16 Thin QFN-EP**
MAX5293EUE
-40
°C to +85°C
16 TSSOP
MAX5293ETE*
-40
°C to +85°C
16 Thin QFN-EP**
MAX5294EUD
-40
°C to +85°C
14 TSSOP
MAX5294ETE*
-40
°C to +85°C
16 Thin QFN-EP**
MAX5295EUE
-40
°C to +85°C
16 TSSOP
MAX5295ETE*
-40
°C to +85°C
16 Thin QFN-EP**
MAX5290MAX5295
Buffered, Fast-Settling, Dual, 12-/10-/8-Bit,
Voltage-Output DACs
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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
= 10k
, C
L
= 100pF, T
A
= T
MIN
to T
MAX
, unless
otherwise noted. Typical values are at T
A
= +25
°C.) (Note 1)
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.
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
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
STATIC ACCURACY
MAX5290/MAX5291
12
MAX5292/MAX5293
10
Resolution
N
MAX5294/MAX5295
8
Bits
MAX5290A/MAX5291A (12-bit)
±1
MAX5290B/MAX5291B (12-bit)
±2
±4
MAX5292/MAX5293 (10-bit)
±0.5
±1
Integral Nonlinearity
INL
V
REF
= 2.5V at
AV
DD
= 2.7V
(Note 2)
MAX5294/MAX5295 (8-bit)
±0.125
±0.5
LSB
Differential Nonlinearity
DNL
Guaranteed monotonic (Note 2)
±1
LSB
MAX5290A/MAX5291A (12-bit), decimal code = 40
±5
MAX5290B/MAX5291B (12-bit), decimal code = 82
±5
±25
MAX5292/MAX5293 (10-bit), decimal code = 21
±5
±25
Offset Error
V
OS
MAX5294/MAX5295 (8-bit), decimal code = 5
±5
±25
mV
Offset-Error Drift
5
ppm of
FS/
°C
MAX5290A/MAX5291A (12-bit)
±4
MAX5290B/MAX5291B (12-bit)
±10
±20
MAX5292/MAX5293 (10-bit)
±3
±5
Gain Error
GE
Full-scale output
MAX5294/MAX5295 (8-bit)
±0.5
±2
LSB
Gain-Error Drift
1
ppm of
FS/
°C
MAX5290MAX5295
Buffered, Fast-Settling, Dual, 12-/10-/8-Bit,
Voltage-Output DACs
_______________________________________________________________________________________
3
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
= 10k
, C
L
= 100pF, T
A
= T
MIN
to T
MAX
, unless
otherwise noted. Typical values are at T
A
= +25
°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Power-Supply Rejection
Ratio
PSRR
Full-scale output, AV
DD
= 2.7V to 3.6V
200
µV/V
REFERENCE INPUT
Reference Input Range
V
REF
0.25
AV
DD
V
Reference Input
Resistance
R
REF
Normal operation (no code dependence)
145
200
k
Reference Leakage
Current
I
REF
Shutdown mode
0.5
1
µA
DAC OUTPUT CHARACTERISTICS
Unity gain
85
SLOW mode,
full scale
Force sense
67
Unity gain
140
Output Voltage Noise
FAST mode,
full scale
Force sense
110
µV
RMS
Unity-gain output
0
AV
DD
Output Voltage Range
(Note 4)
Force-sense output
0
AV
DD
/ 2
V
DC Output Impedance
38
Short-Circuit Current
AV
DD
= 3V, OUT_ to AGND, full scale, FAST mode
45
mA
Power-Up Time
From DV
DD
applied, interface is functional
30
60
µs
Wake-Up Time
Coming out of shutdown, outputs settled
40
µs
Output OUT_ and FB_
Open-Circuit Leakage
Current
Programmed in shutdown mode, force-sense
outputs only
0.01
µA
DIGITAL OUTPUTS (UPIO_)
Output High Voltage
V
OH
I
SOURCE
= 2mA
DV
DD
-
0.5
V
Output Low Voltage
V
OL
I
SINK
= 2mA
0.4
V
DIGITAL INPUTS (SCLK, CS, DIN, DSP, UPIO_)
2.7V
DV
DD
3.6V
2.4
Input High Voltage
V
IH
DV
DD
< 2.7V
0.7 x
DV
DD
V
2.7V
DV
DD
3.6V
0.6
Input Low Voltage
V
IL
DV
DD
< 2.7V
0.2
V
Input Leakage Current
I
IN
±0.1
±1
µA
Input Capacitance
C
IN
10
pF
MAX5290MAX5295
Buffered, Fast-Settling, Dual, 12-/10-/8-Bit,
Voltage-Output DACs
4
_______________________________________________________________________________________
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
= 10k
, C
L
= 100pF, T
A
= T
MIN
to T
MAX
, unless
otherwise noted. Typical values are at T
A
= +25
°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
PU INPUT
Input High Voltage
V
IH-PU
DV
DD
-
200mV
V
Input Low Voltage
V
IL-PU
200
mV
Input Leakage Current
I
IN-PU
PU still considered floating when connected to a
tri-state bus
±200
nA
DYNAMIC PERFORMANCE
Fast mode
3.6
Voltage-Output Slew
Rate
SR
Slow mode
1.6
V/µs
M AX 5290/M AX 5291 fr om cod e 322 to
cod e 4095 to 1/2 LS B
2
3
M AX 5292/M AX 5293 fr om cod e 82 to
cod e 1023 to 1/2 LS B
1.5
3
FAST mode
MAX5294/MAX5295 from code 21 to
code 255 to 1/2 LSB
1
2
M AX 5290/M AX 5291 fr om cod e 322 to
cod e 4095 to 1/2 LS B
3
6
MAX5292/MAX5293 from code 82 to
code 1023 to 1/2 LSB
2.5
6
Voltage-Output Settling
Time (Note 5)
SLOW mode
MAX5294/MAX5295 from code 21 to
code 255 to 1/2 LSB
2
4
µs
FB_ Input Voltage
0
V
REF
/ 2
V
FB_ Input Current
0.1
µA
Unity gain
200
Reference -3dB
Bandwidth (Note 6)
Force sense
150
kHz
Digital Feedthrough
CS = DV
DD
, code = zero scale, any digital input
from 0 to DV
DD
and DV
DD
to 0, f = 100kHz
0.1
nV-s
Digital-to-Analog Glitch
Impulse
Major carry transition
2
nV-s
DAC-to-DAC Crosstalk
(Note 3)
15
nV-s
MAX5290MAX5295
Buffered, Fast-Settling, Dual, 12-/10-/8-Bit,
Voltage-Output DACs
_______________________________________________________________________________________
5
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
= 10k
, C
L
= 100pF, T
A
= T
MIN
to T
MAX
, unless
otherwise noted. Typical values are at T
A
= +25
°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
POWER REQUIREMENTS
Analog Supply Voltage
Range
AV
DD
2.7
3.6
V
Digital Supply Voltage
Range
DV
DD
1.8
AV
DD
V
Unity gain
0.55
0.8
µA
SLOW mode, all digital inputs
at DGND or DV
DD
, no load,
V
REF
= 2.5V
Force sense
0.9
1.2
mA
Unity gain
0.85
2
Operating Supply
Current
I
AVDD
+
I
DVDD
FAST mode, all digital inputs
at DGND or DV
DD
, no load,
V
REF
= 2.5V
Force sense
1.2
2
mA
Shutdown Supply
Current
I
AV D D ( S H D N )
+
I
D V D D ( S H D N )
No clocks, all digital inputs at DGND or DV
DD
, all
DACs in shutdown mode
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
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SCLK Frequency
f
SCLK
2.7V < DV
DD
< 3.6V
20
MHz
SCLK Pulse-Width High
t
CH
(Note 7)
20
ns
SCLK Pulse-Width Low
t
CL
(Note 7)
20
ns
CS Fall to SCLK Rise Setup Time
t
CSS
10
ns
SCLK Rise to CS Rise Hold Time
t
CSH
5
ns
SCLK Rise to CS Fall Setup Time
t
CS0
10
ns
DIN to SCLK Rise Setup Time
t
DS
12
ns
DIN to SCLK Rise Hold Time
t
DH
5
ns
SCLK Rise to DOUTDC1 Valid
Propagation Delay
t
DO1
C
L
= 20pF, UPIO_ = DOUTDC1 mode
30
ns
SCLK Fall to DOUT_ Valid
Propagation Delay
t
DO2
C
L
= 20pF, UPIO_ = DOUTDC0 or DOUTRB
mode
30
ns
CS Rise to SCLK Rise Hold Time
t
CS1
MICROWIRE and SPI modes 0 and 3
10
ns
CS Pulse-Width High
t
CSW
45
ns
PDF 
ZIP