MAX525 Maxim, MAX525 Datasheet
MAX525
Manufacturer Part Number
MAX525
Description
Low-Power / Quad / 12-Bit Voltage-Output DAC with Serial Interface
Manufacturer
Maxim
Datasheet
1.MAX525.pdf
(16 pages)
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The MAX525 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
MAX525 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.
__________________General Description
________________________Applications
19-1098; Rev 1; 12/96
SPI and QSPI are trademarks of Motorola, Inc. Microwire is a trademark of National Semiconductor Corp.
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
_________________________________________________________________________Functional Diagram
Low-Power, Quad, 12-Bit Voltage-Output DAC
Industrial Process Controls
Automatic Test Equipment
Digital Offset and Gain Adjustment
Motion Control
Remote Industrial Controls
Microprocessor-Controlled Systems
________________________________________________________________ Maxim Integrated Products
DOUT
CS DIN SCLK
REGISTER
CONTROL
16-BIT
SHIFT
SR
CL
OUTPUT
CONTROL
DECODE
LOGIC
UPO
PDL
DGND
REGISTER A
REGISTER B
REGISTER C
REGISTER D
INPUT
INPUT
INPUT
INPUT
AGND
V
DD
REGISTER B
REGISTER C
REGISTER D
REGISTER A
DAC
DAC
DAC
DAC
Ordering Information continued on last page.
Pin Configuration appears at end of data sheet.
______________________________Features
_________________Ordering Information
MAX525ACPP
MAX525BCPP
MAX525ACAP
MAX525BCAP
MAX525
Four 12-Bit DACs with Configurable
Output Amplifiers
+5V Single-Supply Operation
Low Supply Current: 0.85mA Normal Operation
Available in 20-Pin SSOP
Power-On Reset Clears all Registers and
DACs to Zero
Capable of Recalling Last State Prior to Shutdown
SPI/QSPI and Microwire Compatible
Simultaneous or Independent Control of DACs
via 3-Wire Serial Interface
User-Programmable Digital Output
PART
with Serial Interface
DAC A
DAC C
DAC B
DAC D
REFCD
REFAB
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
10µA Shutdown Mode
20 Plastic DIP
20 Plastic DIP
20 SSOP
20 SSOP
PIN-PACKAGE
FBA
FBB
OUTB
FBC
FBD
OUTD
OUTC
OUTA
(LSB)
±1/2
±1
±1/2
±1
INL
1
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