MAX512 Maxim, MAX512 Datasheet

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MAX512

Manufacturer Part Number
MAX512
Description
Low-Cost / Triple / 8-Bit Voltage-Output DACs with Serial Interface
Manufacturer
Maxim
Datasheet

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The MAX512/MAX513 contain three 8-bit, voltage-output
digital-to-analog converters (DAC A, DAC B, and DAC C).
Output buffer amplifiers for DACs A and B provide voltage
outputs while reducing external component count. The
output buffer for DAC A can source or sink 5mA to within
0.5V of V
sink 0.5mA to within 0.5V of V
unbuffered, providing a third voltage output with increased
accuracy. The MAX512 operates with a single
+5V ±10% supply, and the MAX513 operates with a
+2.7V to +3.6V supply. Both devices can also operate
with split supplies.
The 3-wire serial interface has a maximum operating fre-
quency of 5MHz and is compatible with SPI™, QSPI™,
and Microwire™. The serial input shift register is 16 bits
long and consists of 8 bits of DAC input data and 8 bits
for DAC selection and shutdown. DAC registers can be
loaded independently or in parallel at the positive edge
of
iary control.
Ultra-low power consumption and small packages
(14-pin DIP/SO) make the MAX512/MAX513 ideal for
portable and battery-powered applications. Supply cur-
rent is only 1mA, dropping to less than 1µA in shutdown.
Any of the three DACs can be independently shut down.
In shutdown mode, the DAC's R-2R ladder network is
disconnected from the reference input, minimizing sys-
tem power consumption.
________________________Applications
19-0252; Rev 2; 5/96
Microwire is a trademark of National Semiconductor Corp. SPI and QSPI are trademarks of Motorola Inc.
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
_______________General Description
__________________Pin Configuration
C
S
TOP VIEW
. A latched logic output is also available for auxil-
Digital Gain and Offset Adjustment
Programmable Attenuators
Programmable Current Sources
Programmable Voltage Sources
RF Digitally Adjustable Bias Circuits
VCO Tuning
DD
Low-Cost, Triple, 8-Bit Voltage-Output DACs
or V
RESET
SCLK
GND
V
DIN
V
CS
DD
SS
SS
________________________________________________________________ Maxim Integrated Products
. The buffer for DAC B can source or
1
2
3
4
5
6
7
MAX512
MAX513
DIP/SO
DD
14
13
12
11
10
9
8
or V
LOUT
I.C.
REFAB
OUTC
OUTB
OUTA
REFC
SS
. DAC C is
____________________________Features
Ordering Information continued at end of data sheet.
* Contact factory for dice specifications.
________________Functional Diagram
______________Ordering Information
MAX512CPD
MAX512CSD
MAX512C/D
Operate from a Single +5V (MAX512) or
+3V (MAX513) Supply, or from Bipolar Supplies
Low Power Consumption
Unipolar or Bipolar Outputs
5MHz, 3-Wire Serial Interface
SPI, QSPI, and Microwire Compatible
Two Buffered, Bipolar-Output DACs (DACs A/B)
Independently Programmable Shutdown Mode
Space-Saving 14-Pin SO/DIP Packages
Pin and Software Reset
SCLK
3
with Serial Interface
PART
1mA Operating Current
<1µA Shutdown Current
1
DIN
RESET
4
2
CS
TEMP. RANGE
LATCH
LATCH
LATCH
LATCH
0°C to +70°C
0°C to +70°C
0°C to +70°C
DAC
DAC
DAC
A
B
C
REFAB
12
11
REFC
DAC C
DAC A
DAC B
5
V
DD
7
V
SS
MAX512
MAX513
14 Plastic DIP
14 SO
Dice*
PIN-PACKAGE
6
GND
14
OUTA
8
OUTB
9
OUTC
10
LOUT
1

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