MAX5800 Datasheet, PDF (1/31 Pages) Maxim Integrated Products – Ultra-Small, Dual-Channel, 8-/10-/12-Bit Buffered Output DACs with Internal Reference and I2C Interface

EVALUATION KIT AVAILABLE
MAX5800/MAX5801/MAX5802
Ultra-Small, Dual-Channel, 8-/10-/12-Bit Buffered Output
DACs with Internal Reference and I²C Interface
General Description
The MAX5800/MAX5801/MAX5802 2-channel, low-power,
8-/10-/12-bit, voltage-output 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
MAX5800/MAX5801/MAX5802 accept a wide supply
voltage range of 2.7V to 5.5V with extremely low power
(1.5mW) 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 MAX5800/MAX5801/MAX5802 have an I²C-compatible,
2-wire interface that operates at clock rates up to
400kHz. The DAC output is buffered and has a low sup-
ply current of less than 250FA per channel and a low
offset error of Q0.5mV (typ). On power-up, the MAX5800/
MAX5801/MAX5802 reset the DAC outputs to zero, pro-
viding additional safety for applications that drive valves
or other transducers which need to be off on power-up.
The internal reference is initially powered down to allow
use of an external reference. The MAX5800/MAX5801/
MAX5802 allow simultaneous output updates using soft-
ware LOAD commands.
A clear logic input (CLR) allows the contents of the CODE
and the DAC registers to be cleared asynchronously and
sets the DAC outputs to zero. The MAX5800/MAX5801/
MAX5802 are available in a small 10-pin µMAXM and an
ultra-small, 10-pin TDFN 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
Portable Instrumentation
Data Acquisition
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Ordering Information appears at end of data sheet.
Benefits and Features
S Two High-Accuracy DAC Channels
 12-Bit Accuracy Without Adjustment
 ±1 LSB INL Buffered Voltage Output
 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 5mm x 3mm 10-Pin µMAX or Ultra-Small
3mm x 3mm 10-Pin TDFN Package
S Wide 2.7V to 5.5V Supply Range
S Separate 1.8V to 5.5V V_DDIO Power-Supply Input
S Fast 400kHz I²C-Compatible, 2-Wire Serial
Interface
S Power-On-Reset to Zero-Scale DAC Output
S CLR For Asynchronous Control
S Three Software-Selectable Power-Down Output
Impedances
 1kI, 100kI, or High Impedance
S Low 350µA Supply Current at 3V V_DD
Functional Diagram
VDDIO
VDD
REF
SCL
SDA
ADDR
CLR
I²C SERIAL
INTERFACE
POR
INTERNAL REFERENCE/
EXTERNAL BUFFER
CODE
REGISTER
DAC
LATCH
8 -/10-/12-BIT
DAC
CODE
CLEAR /
RESET
LOAD
CLEAR /
RESET
DAC CONTROL LOGIC
POWER-DOWN
GND
MAX5800
MAX5801
MAX5802
1 OF 2 DAC CHANNELS
BUFFER
OUTA
OUTB
100kI 1kI
For related parts and recommended products to use with this part, refer to: www.maximintegrated.com/MAX5800.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.
19-6461; Rev 0; 9/12