MAX522 Maxim, MAX522 Datasheet
MAX522
Manufacturer Part Number
MAX522
Description
Dual / 8-Bit / Voltage-Output Serial DAC in 8-Pin SO Package
Manufacturer
Maxim
Datasheet
1.MAX522.pdf
(12 pages)
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The MAX522 contains two 8-bit, buffered, voltage-output
digital-to-analog converters (DAC A and DAC B) in small
8-pin SO and DIP packages. DAC A’s buffer can source
and sink 5mA, and DAC B’s output can source and sink
500µA, both to within 0.5V of ground and V
MAX522 operates with a single +2.7V to +5.5V supply.
The device utilizes a 3-wire serial interface, which oper-
ates at clock rates up to 5MHz and is compatible with
SPI™, QSPI™, and Microwire™ interface standards.
The serial input shift register is 16 bits long and con-
sists of eight bits of DAC input data and eight bits for
DAC selection and shutdown control. DAC registers
can be loaded independently or in parallel at the posi-
tive edge of CS.
The MAX522’s ultra-low power consumption and small
8-pin SO package make it ideal for portable and bat-
tery-powered applications. Supply current is less than
1mA and drops below 1µA in shutdown mode. In addi-
tion, the reference input is disconnected from the REF
pin during shutdown, further reducing the system’s total
power consumption. The software format is compatible
with the MAX512/MAX513 triple 8-bit DACs.
________________________Applications
19-0403; Rev 0; 6/95
SPI and QSPI are trademarks of Motorola Inc.
Microwire is a trademark of National Semiconductor Corp.
Call toll free 1-800-998-8800 for free samples or literature.
__________________Pin Configuration
_______________General Description
TOP VIEW
Digital Gain and Offset Adjustment
Programmable Current Source
Programmable Voltage Source
Power-Amp Bias Control
VCO Tuning
SCLK
GND
V
CS
DD
________________________________________________________________ Maxim Integrated Products
1
2
3
4
DIP/SO
MAX522
7
6
5
8
DIN
REF
OUTB
OUTA
Serial DAC in 8-Pin SO Package
DD
. The
Dual, 8-Bit, Voltage-Output
____________________________Features
________________Functional Diagram
SCLK
______________Ordering Information
MAX522CPA
MAX522CSA
MAX522EPA
MAX522ESA
CS
Operates from a Single +2.7V to +5.5V Supply
Dual Buffered Voltage Output
Low Power Consumption:
Independently Programmable Shutdown Mode
5MHz, 3-Wire Serial Interface
SPI™, QSPI™, and Microwire™ Compatible
Space-Saving 8-Pin SO Package
1
2
1mA Operating Current
<1µA Shutdown Current
PART
8
DIN
0.22 F
LATCH
LATCH
-40°C to +85°C
-40°C to +85°C
DAC
DAC
TEMP. RANGE
A
B
0°C to +70°C
0°C to +70°C
3
4
V
DD
GND
7
DAC A
DAC B
REF
MAX522
0.1 F
(OPTIONAL)
8 Plastic DIP
8 SO
8 Plastic DIP
8 SO
PIN-PACKAGE
OUTA
OUTB
5
6
V
0.1 F
V
0.01 F
OUTA
OUTB
1
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