MAX5841 Datasheet, PDF (1/15 Pages) Maxim Integrated Products – Quad, 10-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC

19-1777; Rev 0; 1/02
Quad, 10-Bit, Low-Power, 2-Wire, Serial
Voltage-Output DAC
General Description
The MAX5841 is a quad, 10-bit voltage output, digital-
to-analog converter (DAC) with an I²C™-compatible,
2-wire interface that operates at clock rates up to
400kHz. The device operates from a single 2.7V to 5.5V
supply and draws only 230µA at V_DD = 3.6V. A power-
down mode decreases current consumption to less
than 1µA. The MAX5841 features three software-selec-
table power-down output impedances: 100kΩ, 1kΩ,
and high impedance. Other features include internal
precision Rail-to-Rail^® output buffers and a power-on
reset (POR) circuit that powers up the DAC in the
100kΩ power-down mode.
The MAX5841 features a double-buffered I²C-compati-
ble serial interface that allows multiple devices to share
a single bus. All logic inputs are CMOS-logic compati-
ble and buffered with Schmitt triggers, allowing direct
interfacing to optocoupled and transformer-isolated
interfaces. The MAX5841 minimizes digital noise
feedthrough by disconnecting the clock (SCL) signal
from the rest of the device when an address mismatch
is detected.
The MAX5841 is specified over the extended tempera-
ture range of -40°C to +85°C and is available in a
miniature 10-pin µMAX package. Refer to the MAX5842
data sheet for the 12-bit version.
Applications
Digital Gain and Offset Adjustments
Programmable Voltage and Current Sources
Programmable Attenuation
VCO/Varactor Diode Control
Low-Cost Instrumentation
Battery-Powered Equipment
ATE
Pin Configuration
TOP VIEW
ADD 1
SCL 2
V_DD 3
GND 4
SDA 5
MAX5841
µMAX
10 OUTD
9 OUTC
8 OUTB
7 OUTA
6 REF
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
I²C is a trademark of Philips Corp.
Features
o Ultra-Low Supply Current
230µA at V_DD = 3.6V
280µA at V_DD = 5.5V
o 300nA Low-Power Power-Down Mode
o Single 2.7V to 5.5V Supply Voltage
o Fast 400kHz I²C-Compatible 2-Wire Serial
Interface
o Schmitt-Trigger Inputs for Direct Interfacing to
Optocouplers
o Rail-to-Rail Output Buffer Amplifiers
o Three Software-Selectable Power-Down Output
Impedances
100kΩ, 1kΩ, and High Impedance
o Read-Back Mode for Bus and Data Checking
o Power-On Reset to Zero
o 10-Pin µMAX Package
Ordering Information
PART
TEMP
RANGE
MAX5841LEUB -40^oC to +85^oC
MAX5841MEUB -40^oC to +85^oC
PIN-
PACKAGE
10 µMAX
10 µMAX
ADDRESS
0111 10X
1011 10X
Typical Operating Circuit
V_DD
V_DD
µC
SDA
SCL
R_P
R_P
R_S
V_DD
SCL
OUTA
R_S
SDA ^{MAX5841 OUTB}
OUTC
REF
OUTD
R_S
SCL
V_DD
R_S
SDA ^{MAX5841 OUTA}
OUTB
REF
OUTC
OUTD
REF
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.