MAX5842 Maxim, MAX5842 Datasheet
MAX5842
Manufacturer Part Number
MAX5842
Description
Quad / 12-Bit / Low-Power / 2-Wire / Serial Voltage-Output DAC
Manufacturer
Maxim
Datasheet
1.MAX5842.pdf
(15 pages)
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The MAX5842 is a quad, 12-bit voltage-output, digital-
to-analog converter (DAC) with an I
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
down mode decreases current consumption to less
than 1µA. The MAX5842 features three software-selec-
table power-down output impedances: 100kΩ, 1kΩ,
and high impedance. Other features include internal
precision Rail-to-Rail
reset (POR) circuit that powers up the DAC in the
100kΩ power-down mode.
The MAX5842 features a double-buffered I
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 MAX5842 minimizes digital noise
feedthrough by disconnecting the clock (SCL) signal
from the rest of the device when an address mismatch
is detected.
The MAX5842 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 MAX5841
data sheet for the 10-bit version.
19-2317; Rev 0; 1/02
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
I
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.
2
C is a trademark of Philips Corp.
Digital Gain and Offset Adjustments
Programmable Voltage and Current Sources
Programmable Attenuation
VCO/Varactor Diode Control
Low-Cost Instrumentation
Battery-Powered Equipment
ATE
TOP VIEW
ADD
GND
SDA
SCL
V
DD
________________________________________________________________ Maxim Integrated Products
1
2
3
4
5
®
Quad, 12-Bit, Low-Power, 2-Wire, Serial
General Description
output buffers and a power-on
MAX5842
µMAX
Pin Configuration
DD
10
Applications
9
8
7
6
2
= 3.6V. A power-
OUTD
OUTC
OUTB
OUTA
REF
C
™
-compatible,
2
C-compati-
o Ultra-Low Supply Current
o 300nA Low-Power Power-Down Mode
o Single 2.7V to 5.5V Supply Voltage
o Fast 400kHz I
o Schmitt-Trigger Inputs for Direct Interfacing to
o Rail-to-Rail Output Buffer Amplifiers
o Three Software-Selectable Power-Down Output
o Read-Back Mode for Bus and Data Checking
o Power-On Reset to Zero
o 10-Pin µMAX Package
MAX5842LEUB
MAX5842MEUB -40
Interface
Optocouplers
Impedances
230µA at V
280µA at V
100kΩ, 1kΩ, and High Impedance
PART
Voltage-Output DAC
SDA
µC
SCL
V
Typical Operating Circuit
DD
DD
DD
2
-40
C-Compatible 2-Wire Serial
= 3.6V
= 5.5V
o
o
RANGE
C to +85
C to +85
TEMP
R
R
R
R
Ordering Information
S
S
S
S
R
P
REF
o
o
C 10 µMAX
C 10 µMAX
R
SCL
SDA
REF
SCL
SDA
REF
P
PIN-
PACKAGE
MAX5842
MAX5842
OUTC
OUTD
OUTA
OUTB
OUTC
OUTD
OUTA
OUTB
V
V
DD
DD
Features
V
DD
ADDRESS
0111 10X
1011 10X
1
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