Rainbow Electronics MAX5251 - Manual

__________________General Description
The +3V MAX5251 combines four low-power, voltage-
output, 10-bit digital-to-analog converters (DACs) and
four precision output amplifiers in a space-saving, 20-
pin package. 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
MAX5251 ideal for industrial-process-control applica-
tions. Other features include software shutdown, hard-
ware shutdown lockout, an active-low reset that 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
3-wire serial interface is compatible with SPI™/QSPI™
and Microwire™. It allows the input and DAC registers to
be updated independently or simultaneously with a sin-
gle software command. All logic inputs are TTL/CMOS-
logic compatible.
________________________Applications
Digital Offset and Gain Adjustment
Microprocessor-Controlled Systems
Industrial Process Controls
Automatic Test Equipment
Remote Industrial Controls
Motion Control
______________________________Features
♦ Four 10-Bit DACs with Configurable
Output Amplifiers
♦ +3.0V to +3.6V Single-Supply Operation
♦ Low Supply Current: 0.8mA Normal Operation
3µA Shutdown Mode
♦ 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
♦ Schmitt-Trigger Digital Inputs for Direct
Optocoupler Interface
♦ 12-Bit Upgrade Available: MAX5253
MAX5251
+3V, Quad, 10-Bit Voltage-Output DAC
with Serial Interface
________________________________________________________________ Maxim Integrated Products 1
MAX5251
OUTA
FBA
FBB
FBC
FBD
DAC A
DAC B
DAC C
DAC D
REFAB
DAC
REGISTER A
DECODE
CONTROL
INPUT
REGISTER A
DAC
REGISTER B
INPUT
REGISTER B
DAC
REGISTER C
INPUT
REGISTER C
DAC
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
19-1172; Rev 0; 12/96
PART
MAX5251ACPP
MAX5251BCPP 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.
MAX5251ACAP
MAX5251BCAP 0°C to +70°C
0°C to +70°C 20 SSOP
20 SSOP
±1/2
±1