19-1123; Rev 0; 9/96
+3V, Quad, 12-Bit Voltage-Output DAC
with Serial Interface
__________________General Description
The MAX5253 combines four low-power, voltage-output,
12-bit digital-to-analog converters (DACs) and four pre-
cision output amplifiers in a space-saving, 20-pin pack-
age. In addition to the four voltage outputs, each
amplifier’s negative input is also available to the user.
This facilitates specific gain configurations, remote
sensing, and high output drive capacity, making the
MAX5253 ideal for industrial-process-control applica-
tions. Other features include software shutdown, hard-
ware shutdown lockout, an active-low reset which clears
all registers and DACs to zero, a user-programmable
logic output, and a serial-data output.
Each DAC has a double-buffered input organized as an
input register followed by a DAC register. A 16-bit serial
word loads data into each input/DAC register. The serial
interface is compatible with SPI™/QSPI™ and
Microwire™. It allows the input and DAC registers to be
updated independently or simultaneously with a single
software command. The DAC registers can be simulta-
neously updated via the 3-wire serial interface. All logic
inputs are TTL/CMOS-logic compatible.
______________________________Features
o
Four 12-Bit DACs with Configurable
Output Amplifiers
o
+3.0V to +3.6V Single-Supply Operation
o
Low Supply Current: 0.82mA Normal Operation
3µA Shutdown Mode
o
Reference Inputs are High Impedance in Shutdown
o
Available in 20-Pin SSOP
o
Power-On Reset Clears all Registers and
DACs to Zero
o
SPI/QSPI and Microwire Compatible
o
Simultaneous or Independent Control of DACs
via 3-Wire Serial Interface
o
User-Programmable Digital Output
MAX5253
_________________Ordering Information
PART
MAX5253ACPP
MAX5253BCPP
MAX5253ACAP
MAX5253BCAP
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
20 Plastic DIP
20 Plastic DIP
20 SSOP
20 SSOP
INL
(LSB)
±1/2
±1
±1/2
±1
________________________Applications
Industrial Process Controls
Automatic Test Equipment
Digital Offset and Gain Adjustment
Motion Control
Remote Industrial Controls
Microprocessor-Controlled Systems
Ordering Information continued on last page.
Pin Configuration appears at end of data sheet.
_________________________________________________________________________Functional Diagram
DOUT CL
PDL
DECODE
CONTROL
INPUT
REGISTER A
DGND
AGND
V
DD
REFAB
FBA
MAX5253
DAC A
REGISTER A
OUTA
DAC A
FBB
OUTB
DAC B
FBC
OUTC
DAC C
FBD
OUTD
DAC D
16-BIT
SHIFT
REGISTER
INPUT
REGISTER B
DAC B
REGISTER B
INPUT
REGISTER C
DAC C
REGISTER C
SR
CONTROL
CS DIN SCLK
LOGIC
OUTPUT
UPO
INPUT
REGISTER D
DAC D
REGISTER D
REFCD
SPI and QSPI are trademarks of Motorola, Inc. Microwire is a trademark of National Semiconductor Corp.
________________________________________________________________
Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
