(DACs) include output buffers and an internal 3ppm/°C
reference that is selectable to be 2.048V, 2.500V, or
4.096V. The MAX5723/MAX5724/MAX5725 accept a
wide supply voltage range of 2.7V to 5.5V with extremely
low power (6mW) consumption to accommodate most
low-voltage applications. A precision external reference
input allows rail-to-rail operation and presents a 100kI
(typ) load to an external reference.
The MAX5723/MAX5724/MAX5725 have a fast 50MHz,
4-wire SPI/QSPI™/MICROWIRE/DSP-compatible serial
interface that operates at clock rates up to 50MHz. The
DAC output is buffered and has a low supply current
of less than 250FA per channel and a low offset error
of
Q0.5mV
(typ). On power-up, the MAX5723/MAX5724/
MAX5725 reset the DAC outputs to zero or midscale
based on the status of M/Z logic input, providing flex-
ibility for a variety of control applications. The internal
reference is initially powered down to allow use of an
external reference. The MAX5723/MAX5724/MAX5725
allow simultaneous output updates using software LOAD
commands or the hardware load DAC logic input (LDAC).
The MAX5723/MAX5724/MAX5725 feature a program-
mable watchdog function which can be enabled to moni-
tor the I/O interface for activity and integrity.
A clear logic input (CLR) allows the contents of the CODE
and the DAC registers to be cleared asynchronously and
simultaneously sets the DAC outputs to the program-
mable default value. The MAX5723/MAX5724/MAX5725
are available in a 20-pin TSSOP and an ultra-small,
20-bump WLP package and are specified over the -40NC
to +125NC temperature range.
Functional Diagram
V
DDIO
V
DD
REF
INTERNAL REFERENCE/
EXTERNAL BUFFER
CSB
SCLK
DIN
DOUT
CLR
LDAC
CODE
IRQ
WATCHDOG
TIMER
CLEAR/
RESET
(GATE/
CLEAR/
RESET)
SPI
SERIAL
INTERFACE
CODE
REGISTER
DAC
LATCH
8 -/10-/12-BIT
DAC
MAX5723
MAX5724
MAX5725
Applications
1 OF 8 DAC CHANNELS
Programmable Voltage and Current Sources
Gain and Offset Adjustment
Automatic Tuning and Optical Control
Power Amplifier Control and Biasing
Process Control and Servo Loops
Portable Instrumentation
BUFFER
OUT0
OUT1
OUT2
OUT3
OUT4
LOAD
100kI
DAC CONTROL LOGIC
POWER-DOWN
1kI
OUT5
OUT6
OUT7
M/Z
POR
GND
QSPI is a trademark of Motorola, Inc.
µMAX is a registered trademark of Maxim Integrated Products,
Inc.
Ordering Information
appears at end of data sheet.
19-6243; Rev 2; 2/13
MAX5723/MAX5724/
MAX5725
Absolute Maximum Ratings
V
DD
, V
DDIO
to GND ................................................-0.3V to +6V
OUT_, REF to GND ......................................0.3V to the lower of
(V
DD
+ 0.3V) and +6V
SCLK, CSB,
IRQ,
M/Z,
LDAC, CLR
to GND ...........-0.3V to +6V
DIN, DOUT to GND .....................................-0.3V to the lower of
(V
DDIO
+ 0.3V) and +6V
Continuous Power Dissipation (T
A
= +70NC)
TSSOP (derate at 13.6mW/NC above 70NC) ..............1084mW
WLP (derate at 21.3mW/NC above 70NC) ..................1700mW
Ultra-Small, Octal-Channel, 8-/10-/12-Bit
Buffered Output DACs with Internal
Reference and SPI Interface
Maximum Continuous Current into Any Pin ....................
Q50mA
Operating Temperature .................................... -40NC to +125NC
Storage Temperature ....................................... -65NC to +150NC
Lead Temperature (TSSOP only) (soldering, 10s) ..........+300NC
Soldering Temperature (reflow) .................................... +260NC
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-
tion 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.
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