MAX5803 Datasheet, PDF (1/31 Pages) Maxim Integrated Products – Ultra-Small, Single-Channel, 8-/10-/12-Bit Buffered Output Voltage DACs with Internal Reference and I2C Interface

MAX5803/MAX5804/MAX5805
Ultra-Small, Single-Channel, 8-/10-/12-Bit Buffered Output
Voltage DACs with Internal Reference and I²C Interface
General Description
The MAX5803/MAX5804 single-channel, low-power,
8-/10-/12-bit, voltage-output this is an addition to content
digital-to-analog converters (DACs) include output
buffers and an internal reference that is selectable to
be 2.048V, 2.500V, or 4.096V. The MAX5803/MAX5804/
MAX5805 accept a wide supply voltage range of 2.7V to
5.5V with extremely low power (< 1mW) 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 MAX5803/MAX5804/MAX5805 have an I²C-
compatible, 2-wire interface that operates at clock rates
up to 450kHz. The DAC output is buffered and has
a low supply current of 155FA (typical at 3.5V) and a
low offset error of Q0.5mV (typical). On power-up, the
MAX5803/MAX5804/MAX5805 reset the DAC outputs
to zero, providing additional safety for applications that
drive valves or other transducers which need to be off on
power-up.
The MAX5803/MAX5804/MAX5805 include a user-
configurable active-low asynchronous input, AUX for
additional flexibility. This input can be programmed to
asynchronously clear (CLR) or temporarily gate (GATE) the
DAC output to a user-programmable value. A dedicated
active-low asynchronous LDAC input is also included. This
allows simultaneous output updates of multiple devices.
The MAX5803/MAX5804/MAX5805 are available in 10-pin
TDFN/µMAXM packages 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
Portable Instrumentation
Data Acquisition
Benefits and Features
S Single High-Accuracy DAC Channel
 12-Bit Accuracy Without Adjustments
 ±1 LSB INL Buffered Voltage Output
 Guaranteed Monotonic Over All Operating
Conditions
S Three Precision Selectable Internal References
 2.048V, 2.500V, or 4.096V
S Internal Output Buffer
 Rail-to-Rail Operation with External Reference
 6.3µs Settling Time
 Output Directly Drives 2kI Loads
S Small, 10-Pin, 2mm x 3mm TDFN and 3mm x 5mm
µMAX Packages
S Wide 2.7V to 5.5V Supply Range
S Fast 400kHz I²C-Compatible, 2-Wire Serial Interface
with Readback Capability
S Power-On-Reset to Zero-Scale DAC Output
S User-Configurable Asynchronous I/O Functions:
CLR, LDAC, GATE
S Three Software-Selectable Power-Down Output
Impedances: 1kI, 100kI, or High Impedance
S Low 155µA DAC Supply Current at 3V
Functional Diagram
VDDIO
VDD
REF
INTERNAL REFERENCE /
EXTERNAL BUFFER
MAX5803
MAX5804
MAX5805
SCL
CODE
DAC
8 -/ 10 -/
SDA
REGISTER
LATCH
12-BIT
ADDR
I²C
DAC
BUFFER
OUT
SERIAL
INTERFACE
AUX
LDAC
CODE
CLEAR /
RESET
LOAD
GATE
CLEAR /
RESET
PPOORR
DAC CONTROL LOGIC
POWER
DOWN
100kI 1kI
GND
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part, refer to: www.maximintegrated.com/MAX5803.related
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-6464; Rev 2; 6/13