19-3064; Rev 1; 12/04
Dual, Ultra-Low-Power,
10-Bit, Voltage-Output DACs
General Description
The MAX5522–MAX5525 are dual, 10-bit, ultra-low-
power, voltage-output, digital-to-analog converters
(DACs) offering rail-to-rail buffered voltage outputs. The
DACs operate from a 1.8V to 5.5V supply and consume
less than 5µA, making the devices suitable for low-
power and low-voltage applications. A shutdown mode
reduces overall current, including the reference input
current, to just 0.18µA. The MAX5522–MAX5525 use a
3-wire serial interface that is compatible with SPI™,
QSPI™, and MICROWIRE™.
Upon power-up, the MAX5522–MAX5525 outputs are
driven to zero scale, providing additional safety for
applications that drive valves or for other transducers
that need to be off during power-up. The zero-scale
outputs enable glitch-free power-up.
The MAX5522 accepts an external reference input and
provides unity-gain outputs. The MAX5523 contains a
precision internal reference and provides a buffered
external reference output with unity-gain DAC outputs.
The MAX5524 accepts an external reference input and
provides force-sense outputs. The MAX5525 contains a
precision internal reference and provides a buffered
external reference output with force-sense DAC outputs.
The MAX5524/MAX5525 are available in a 4mm x 4mm
x 0.8mm, 12-pin, thin QFN package. The MAX5522/
MAX5523 are available in an 8-pin µMAX package. All
devices are guaranteed over the extended -40°C to
+85°C temperature range.
For 12-bit compatible devices, refer to the MAX5532–
MAX5535 data sheet. For 8-bit compatible devices,
refer to the MAX5512–MAX5515 data sheet.
Features
♦
Ultra-Low 5µA Supply Current
♦
Shutdown Mode Reduces Supply Current to
0.18µA (max)
♦
Single +1.8V to +5.5V Supply
♦
Small 4mm x 4mm x 0.8mm Thin QFN Package
♦
Internal Reference Sources 8mA of Current
(MAX5523/MAX5525)
♦
Flexible Force-Sense-Configured Rail-to-Rail
Output Buffers
♦
Fast 16MHz, 3-Wire, SPI-/QSPI-/MICROWIRE-
Compatible Serial Interface
♦
TTL- and CMOS-Compatible Digital Inputs with
Hysteresis
♦
Glitch-Free Outputs During Power-Up
MAX5522–MAX5525
Ordering Information
PART
MAX5522EUA
MAX5523EUA
MAX5524ETC
MAX5525ETC
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
8 µMAX
8 µMAX
12 Thin QFN-EP*
12 Thin QFN-EP*
*EP
= Exposed paddle (internally connected to GND).
Selector Guide
PART
MAX5522EUA
MAX5523EUA
MAX5524ETC
MAX5525ETC
OUTPUTS
Unity gain
Unity gain
Force sense
Force sense
REFERENCE
External
Internal
External
Internal
TOP MARK
—
—
AACK
AACL
Applications
Portable Battery-Powered Devices
Instrumentation
Automatic Trimming and Calibration in Factory
or Field
Programmable Voltage and Current Sources
Industrial Process Control and Remote
Industrial Devices
Remote Data Conversion and Monitoring
Chemical Sensor Cell Bias for Gas Monitors
Programmable LCD Bias
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
Pin Configurations
TOP VIEW
CS 1
SCLK 2
DIN 3
REFIN(MAX5522) 4
REFOUT(MAX5523)
8 OUTA
MAX5522
MAX5523
7 GND
6 V
DD
5 OUTB
µMAX
Pin Configurations continued at end of data sheet.
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.
Dual, Ultra-Low-Power,
10-Bit, Voltage-Output DACs
MAX5522–MAX5525
ABSOLUTE MAXIMUM RATINGS
V
DD
to GND ..............................................................-0.3V to +6V
OUTA, OUTB to GND .................................-0.3V to (V
DD
+ 0.3V)
FBA, FBB to GND .......................................-0.3V to (V
DD
+ 0.3V)
SCLK, DIN,
CS
to GND ..............................-0.3V to (V
DD
+ 0.3V)
REFIN, REFOUT to GND ............................-0.3V to (V
DD
+ 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
12-Pin Thin QFN (derate 16.9mW/°C above +70°C).....1349mW
8-Pin µMAX (derate 5.9mW/°C above +70°C) .............471mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
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
(V
DD
= +1.8V to +5.5V, OUT_ unloaded, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
Resolution
Integral Nonlinearity (Note 1)
SYMBOL
N
INL
V
DD
= 5V, V
REF
= 4.096V
V
DD
= 1.8V, V
REF
= 1.024V
Guaranteed monotonic, V
DD
= 5V,
V
REF
= 4.096V
Guaranteed monotonic, V
DD
= 1.8V,
V
REF
= 1.024V
Offset Error (Note 2)
Offset-Error Temperature Drift
Gain Error (Note 3)
Gain-Error Temperature
Coefficient
Power-Supply Rejection Ratio
Resolution
Integral Nonlinearity (Note 1)
PSRR
N
INL
V
DD
= 5V, V
REF
= 3.9V
V
DD
= 1.8V, V
REF
= 1.2V
Guaranteed monotonic, V
DD
= 5V,
V
REF
= 3.9V
Guaranteed monotonic, V
DD
= 1.8V,
V
REF
= 1.2V
V
DD
= 5V, V
REF
= 3.9V
V
DD
= 1.8V, V
REF
= 1.2V
V
DD
= 5V, V
REF
= 3.9V
V
DD
= 1.8V, V
REF
= 1.2V
1.8V
≤
V
DD
≤
5.5V
10
±1
±1
±0.2
±0.2
±1
±1
±2
GE
±0.5
±0.5
±4
±2
±2
±4
±4
±1
LSB
±1
±20
±20
mV
µV/°C
LSB
ppm/°C
STATIC ACCURACY (MAX5523/MAX5525 INTERNAL REFERENCE)
Bits
LSB
GE
V
DD
= 5V, V
REF
= 4.096V
V
DD
= 1.8V, V
REF
= 1.024V
V
OS
V
DD
= 5V, V
REF
= 4.096V
V
DD
= 1.8V, V
REF
= 1.024V
CONDITIONS
MIN
10
±1
±1
±0.2
±0.2
±1
±1
±2
±0.5
±0.5
±4
85
±2
±2
±4
±4
±1
LSB
±1
±20
±20
mV
µV/°C
LSB
ppm/°C
dB
TYP
MAX
UNITS
Bits
LSB
STATIC ACCURACY (MAX5522/MAX5524 EXTERNAL REFERENCE)
Differential Nonlinearity (Note 1)
DNL
Differential Nonlinearity (Note 1)
DNL
Offset Error (Note 2)
Offset-Error Temperature Drift
Gain Error (Note 3)
Gain-Error Temperature
Coefficient
V
OS
2
_______________________________________________________________________________________
Dual, Ultra-Low-Power,
10-Bit, Voltage-Output DACs
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +1.8V to +5.5V, OUT_ unloaded, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
Power-Supply Rejection Ratio
Reference-Input Voltage Range
Reference-Input Impedance
SYMBOL
PSRR
V
REFIN
R
REFIN
Normal operation
In shutdown
No external load, V
DD
= 1.8V
Initial Accuracy
V
REFOUT
No external load, V
DD
= 2.5V
No external load, V
DD
= 3V
No external load, V
DD
= 5V
Output-Voltage Temperature
Coefficient
Line Regulation
V
TEMPCO
T
A
= -40°C to +85°C (Note 4)
V
REFOUT
< V
DD
- 200mV (Note 5)
0
≤
I
REFOUT
≤
1mA, sourcing, V
DD
= 1.8V,
V
REF
= 1.2V
Load Regulation
0
≤
I
REFOUT
≤
8mA, sourcing, V
DD
= 5V,
V
REF
= 3.9V
-150µA
≤
I
REFOUT
≤
0, sinking
0.1Hz to 10Hz, V
REF
= 3.9V
Output Noise Voltage
10Hz to 10kHz, V
REF
= 3.9V
0.1Hz to 10Hz, V
REF
= 1.2V
10Hz to 10kHz, V
REF
= 1.2V
Short-Circuit Current (Note 6)
Capacitive Load Stability Range
Thermal Hysteresis
Reference Power-Up Time
(from Shutdown)
Long-Term Stability
DAC OUTPUTS (OUTA, OUTB)
Capacitive Driving Capability
V
DD
= 5V
V
DD
= 1.8V
(Note 7)
(Note 8)
REFOUT unloaded, V
DD
= 5V
REFOUT unloaded, V
DD
= 1.8V
1.197
1.913
2.391
3.828
CONDITIONS
1.8V
≤
V
DD
≤
5.5V
0
4.1
2.5
1.214
1.940
2.425
3.885
12
2
0.3
0.3
0.2
150
600
50
450
30
14
0 to 10
200
5.4
4.4
200
mA
nF
ppm
ms
ppm/
1khrs
pF
65
65
mA
14
14
µV
P-P
1.231
1.967
2.459
3.941
30
200
2
2
µV/µA
ppm/°C
µV/V
V
MIN
TYP
85
V
DD
MAX
UNITS
dB
V
MΩ
GΩ
MAX5522–MAX5525
REFERENCE INPUT (MAX5522/MAX5524)
REFERENCE OUTPUT (MAX5523/MAX5525)
C
L
V
DD
= 5V, V
OUT
set to full scale, OUT
shorted to GND, source current
V
DD
= 5V V
OUT
set to 0V, OUT shorted to
V
DD
, sink current
V
DD
= 1.8V, V
OUT
set to full scale OUT
shorted to GND, source current
V
DD
= 1.8V, V
OUT
set to 0V, OUT shorted to
V
DD
, sink current
1000
Short-Circuit Current (Note 6)
_______________________________________________________________________________________
3
Dual, Ultra-Low-Power,
10-Bit, Voltage-Output DACs
MAX5522–MAX5525
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +1.8V to +5.5V, OUT_ unloaded, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
SYMBOL
CONDITIONS
Coming out of shutdown
(MAX5522/MAX5524)
DAC Power-Up Time
Coming out of standby
(MAX5523/MAX5525)
Output Power-Up Glitch
FB_ Input Current
DIGITAL INPUTS (SCLK, DIN,
CS)
4.5V
≤
V
DD
≤
5.5V
Input High Voltage
V
IH
2.7V
<
V
DD
≤
3.6V
1.8V
≤
V
DD
≤
2.7V
4.5V
≤
V
DD
≤
5.5V
Input Low Voltage
Input Leakage Current
Input Capacitance
DYNAMIC PERFORMANCE
Voltage-Output Slew Rate
Voltage-Output Settling Time
SR
Positive and negative (Note 10)
0.1 to 0.9 of full scale to within 0.5 LSB
(Note 10)
0.1Hz to 10Hz
Output Noise Voltage
10Hz to 10kHz
POWER REQUIREMENTS
Supply Voltage Range
V
DD
V
DD
= 5V
MAX5523/MAX5525
Supply Current (Note 9)
I
DD
MAX5522/MAX5524
V
DD
= 3V
V
DD
= 1.8V
V
DD
= 5V
V
DD
= 3V
V
DD
= 1.8V
Standby Supply Current
Shutdown Supply Current
I
DDSD
I
DDPD
MAX5523/MAX5525
(Note 9)
(Note 9)
V
DD
= 5V
V
DD
= 3V
V
DD
= 1.8V
1.8
7.0
6.4
7.0
3.8
3.8
4.7
3.3
2.8
2.4
0.05
5.5
8.0
8.0
8.0
5.0
5.0
6.0
4.5
4.0
3.5
0.25
µA
µA
µA
V
V
DD
= 5V
V
DD
= 1.8V
V
DD
= 5V
V
DD
= 1.8V
10
660
80
55
620
476
µV
P-P
V/ms
µs
V
IL
I
IN
C
IN
2.7V
<
V
DD
≤
3.6V
1.8V
≤
V
DD
≤
2.7V
(Note 9)
±0.05
10
2.4
2.0
0.7 x V
DD
0.8
0.6
0.3 x V
DD
±0.5
µA
pF
V
V
C
L
= 100pF
V
DD
= 5V
V
DD
= 1.8V
V
DD
= 1.8V to
5.5V
MIN
TYP
3
3.8
0.4
10
10
mV
pA
µs
MAX
UNITS
4
_______________________________________________________________________________________
Dual, Ultra-Low-Power,
10-Bit, Voltage-Output DACs
TIMING CHARACTERISTICS
(V
DD
= +4.5V to +5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
Serial Clock Frequency
DIN to SCLK Rise Setup Time
DIN to SCLK Rise Hold Time
SCLK Pulse-Width High
SCLK Pulse-Width Low
CS
Pulse-Width High
SCLK Rise to
CS
Rise Hold Time
CS
Fall to SCLK Rise Setup Time
SCLK Fall to
CS
Fall Setup
CS
Rise to SCK Rise Hold Time
SYMBOL
f
SCLK
t
DS
t
DH
t
CH
t
CL
t
CSW
t
CSH
t
CSS
t
CSO
t
CS1
CONDITIONS
MIN
0
15
0
24
24
100
0
20
0
20
TYP
MAX
16.7
UNITS
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
MAX5522–MAX5525
TIMING CHARACTERISTICS (V
DD
= 4.5V to 5.5V )
TIMING CHARACTERISTICS
(VDD = +1.8V to +5.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
Serial Clock Frequency
DIN to SCLK Rise Setup Time
DIN to SCLK Rise Hold Time
SCLK Pulse-Width High
SCLK Pulse-Width Low
CS
Pulse-Width High
SCLK Rise to
CS
Rise Hold Time
CS
Fall to SCLK Rise Setup Time
SCLK Fall to
CS
Fall Setup
CS
Rise to SCK Rise Hold Time
SYMBOL
f
SCLK
t
DS
t
DH
t
CH
t
CL
t
CSW
t
CSH
t
CSS
t
CSO
t
CS1
CONDITIONS
MIN
0
24
0
40
40
150
0
30
0
30
TYP
MAX
10
UNITS
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
TIMING CHARACTERISTICS (V
DD
= 1.8V to 5.5V )
Note 1:
Linearity is tested within codes 24 to 1020.
Note 2:
Offset is tested at code 24.
Note 3:
Gain is tested at code 1023. For the MAX5524/MAX5525, FB_ is connected to its respective OUT_.
Note 4:
Guaranteed by design. Not production testsed
Note 5:
V
DD
must be a minimum of 1.8V.
Note 6:
Outputs can be shorted to V
DD
or GND indefinitely, provided that package power dissipation is not exceeded.
Note 7:
Optimal noise performance is at 2nF load capacitance.
Note 8:
Thermal hysteresis is defined as the change in the initial +25°C output voltage after cycling the device from T
MAX
to T
MIN
.
Note 9:
All digital inputs at V
DD
or GND.
Note 10:
Load = 10kΩ in parallel with 100pF, V
DD
= 5V, VREF = 4.096V (MAX5522/MAX5524) or V
REF
= 3.9V (MAX5523/MAX5525).
_______________________________________________________________________________________
5
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