MAX5803/MAX5804/MAX5805
Ultra-Small, Single-Channel, 8-/10-/12-Bit Buffered Output
2
Voltage DACs with Internal Reference and I C Interface
General Description
Benefits and Features
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.
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
2
The MAX5803/MAX5804/MAX5805 have an I C-
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.
S Small, 10-Pin, 2mm x 3mm TDFN and 3mm x 5mm
µMAX Packages
S Wide 2.7V to 5.5V Supply Range
2
S Fast 400kHz I C-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
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.
S Three Software-Selectable Power-Down Output
Impedances: 1kI, 100kI, or High Impedance
S Low 155µA DAC Supply Current at 3V
The MAX5803/MAX5804/MAX5805 are available in 10-pin
TDFN/µMAX packages and are specified over the -40NC
Functional Diagram
M
to +125NC temperature range
.
V
DDIO
V
DD
REF
Applications
MAX5803
MAX5804
MAX5805
INTERNAL REFERENCE /
EXTERNAL BUFFER
Programmable Voltage and Current Sources
Gain and Offset Adjustment
SCL
SDA
8-/10-/
12-BIT
DAC
CODE
DAC
REGISTER
LATCH
Automatic Tuning and Optical Control
Power Amplifier Control and Biasing
Process Control and Servo Loops
Portable Instrumentation
OUT
BUFFER
2
I C
ADDR
SERIAL
INTERFACE
AUX
CLEAR/
RESET
CLEAR /
RESET
CODE
LOAD GATE
LDAC
100kI 1kI
POWER
DOWN
Data Acquisition
DAC CONTROL LOGIC
POR
POR
GND
Ordering Information appears at end of data sheet.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
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