MAX5723 Datasheet, PDF (1/35 Pages) Maxim Integrated Products – Ultra-Small, Octal-Channel, 8-/10-/12-Bit Buffered Output DACs with Internal Reference and SPI Interface

19-6243; Rev 0; 3/12
EVALUATION KIT AVAILABLE
MAX5723/MAX5724/MAX5725
Ultra-Small, Octal-Channel, 8-/10-/12-Bit Buffered
Output DACs with Internal Reference and SPI Interface
General Description
Benefits and Features
The MAX5723/MAX5724/MAX5725 8-channel, low-power,
8-/10-/12-bit, voltage-output digital-to-analog converters
(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.
S Eight High-Accuracy DAC Channels
 12-Bit Accuracy Without Adjustment
 ±1 LSB INL Buffered Voltage Output
 Guaranteed Monotonic Over All Operating
Conditions
 Independent Mode Settings for Each DAC
S Three Precision Selectable Internal References
 2.048V, 2.500V, or 4.096V
S Internal Output Buffer
 Rail-to-Rail Operation with External Reference
 4.5µs Settling Time
 Outputs Directly Drive 2kI Loads
S Small 6.5mm x 4.4mm 20-Pin TSSOP or Ultra-
Small 2.5mm x 2.3mm 20-Bump WLP Package
S Wide 2.7V to 5.5V Supply Range
S Separate 1.8V to 5.5V V_DDIO Power-Supply Input
S Fast 50MHz 4-Wire SPI/QSPI/MICROWIRE/DSP-
Compatible Serial Interface
S Programmable Interface Watchdog Timer
S Pin-Selectable Power-On-Reset to Zero-Scale or
Midscale DAC Output
S LDAC and CLR For Asynchronous DAC Control
S Three Selectable Power-Down Output Impedances
 1kI, 100kI, or High Impedance
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.
Applications
Programmable Voltage and Current Sources
Gain and Offset Adjustment
Automatic Tuning and Optical Control
Power Amplifier Control and Biasing
Process Control and Servo Loops
Functional Diagram
VDDIO
VDD
REF
CSB
SCLK
DIN
DOUT
CLR
LDAC
IRQ
M/Z
SPI
SERIAL
INTERFACE
WATCHDOG
TIMER
POR
INTERNAL REFERENCE/
EXTERNAL BUFFER
CODE
REGISTER
DAC
LATCH
8 -/10-/12-BIT
DAC
CODE
CLEAR /
RESET
LOAD
(GATE/
CLEAR /
RESET)
DAC CONTROL LOGIC
POWER-DOWN
MAX5723
MAX5724
MAX5725
1 OF 8 DAC CHANNELS
BUFFER
100kI 1kI
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
Portable Instrumentation
GND
QSPI is a trademark of Motorola, Inc.
MICROWIRE is a registered trademark of National Semiconductor
Corporation.
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part, refer to: www.maxim-ic.com/MAX5723.related
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For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
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