Rainbow Electronics MAX5253 - Manual

__________________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.
________________________Applications
Industrial Process Controls
Automatic Test Equipment
Digital Offset and Gain Adjustment
Motion Control
Remote Industrial Controls
Microprocessor-Controlled Systems
______________________________Features
♦ Four 12-Bit DACs with Configurable
Output Amplifiers
♦ +3.0V to +3.6V Single-Supply Operation
♦ Low Supply Current: 0.82mA Normal Operation
3µA Shutdown Mode
♦ Reference Inputs are High Impedance in Shutdown
♦ Available in 20-Pin SSOP
♦ Power-On Reset Clears all Registers and
DACs to Zero
♦ SPI/QSPI and Microwire Compatible
♦ Simultaneous or Independent Control of DACs
via 3-Wire Serial Interface
♦ User-Programmable Digital Output
MAX5253
+3V, Quad, 12-Bit Voltage-Output DAC
with Serial Interface
________________________________________________________________ Maxim Integrated Products 1
MAX5253
OUTA
FBA
FBB
FBC
FBD
DAC A
DAC B
DAC C
DAC D
REFAB
DAC A
REGISTER A
DECODE
CONTROL
INPUT
REGISTER A
DAC B
REGISTER B
INPUT
REGISTER B
DAC C
REGISTER C
INPUT
REGISTER C
DAC D
REGISTER D
INPUT
REGISTER D
16-BIT
SHIFT
REGISTER
SR
CONTROL
LOGIC
OUTPUT
CS DIN SCLK
OUTB
OUTC
OUTD
DOUT PDL CL V DD AGND DGND
UPO REFCD
_________________________________________________________________________Functional Diagram
19-1123; Rev 0; 9/96
PART
MAX5253ACPP
MAX5253BCPP 0°C to +70°C
0°C to +70°C
TEMP. RANGE PIN-PACKAGE
20 Plastic DIP
20 Plastic DIP
_________________Ordering Information
Ordering Information continued on last page.
Pin Configuration appears at end of data sheet.
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
INL
(LSB)
±1/2
±1
SPI and QSPI are trademarks of Motorola, Inc. Microwire is a trademark of National Semiconductor Corp.
MAX5253ACAP
MAX5253BCAP 0°C to +70°C
0°C to +70°C 20 SSOP
20 SSOP
±1/2
±1