19-1080; Rev 0; 6/96
2 .7 V, Lo w -P o w e r, 8 -Bit Qu a d DAC
w it h Ra il-t o -Ra il Ou t p u t Bu ffe rs
MAX53
_______________Ge n e ra l De s c rip t io n
____________________________Fe a t u re s
The MAX533 serial-input, voltage-output, 8-bit quad
digital-to-analog converter (DAC) operates from a sin-
gle +2.7V to +3.6V supply. Internal precision buffers
swing rail to rail, and the reference input range includes
both ground and the positive rail. The MAX533 features
a 1µA shutdown mode.
♦ +2.7V to +3.6V Single-Supply Operation
♦ Ultra-Low Supply Current:
0.7mA while Operating
1µA in Shutdown Mode
♦ Ultra-Small 16-Pin QSOP Package
The serial interface is double buffered: a 12-bit input
shift register is followed by four 8-bit buffer registers
and four 8-bit DAC registers. The 12-bit serial word
consists of eight data bits and four control bits (for DAC
selection and special programming commands). Both
the input and DAC registers can be updated indepen-
dently or simultaneously with a single software com-
mand. Two additional asynchronous control pins, LDAC
and CLR, provide simultaneous updating or clearing of
the input and DAC registers.
♦ Ground to V
Reference Input Range
DD
♦ Output Buffer Amplifiers Swing Rail to Rail
♦ 10MHz Serial Interface, Compatible with SPI, QSPI
(CPOL = CPHA = 0 or CPOL = CPHA = 1), and
Microwire
♦ Double-Buffered Registers for Synchronous
Updating
♦ Serial Data Output for Daisy Chaining
The interface is compatible with SPI™, QSPI™ (CPOL =
CPHA = 0 or CPOL = CPHA = 1), and Microwire™. A
buffered data output allows daisy chaining of serial
devices.
♦ Power-On Reset Clears Serial Interface and Sets
All Registers to Zero
♦ Software Shutdown
In addition to 16-pin DIP and CERDIP packages, the
MAX533 is available in a 16-pin QSOP that occupies
the same area as an 8-pin SO.
♦ Software-Programmable Logic Output
♦ Asynchronous Hardware Clear Resets All Internal
Registers to Zero
________________________Ap p lic a t io n s
Digital Gain and Offset Adjustments
Programmable Attenuators
______________Ord e rin g In fo rm a t io n
Programmable Current Sources
Portable Instruments
INL
(LSB)
PART
TEMP. RANGE PIN-PACKAGE
MAX533ACPE
MAX533BCPE
MAX533ACEE
MAX533BCEE
MAX533BC/D
MAX533AEPE
MAX533BEPE
MAX533AEEE
MAX533BEEE
MAX533AMJE
MAX533BMJE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
16 Plastic DIP
16 Plastic DIP
16 QSOP
±1
±2
±1
±2
±2
±1
±2
±1
±2
±1
±2
__________________P in Co n fig u ra t io n
16 QSOP
TOP VIEW
Dice*
OUTB
OUTA
REF
1
2
3
4
5
6
7
8
16
15
14
13
OUTC
OUTD
AGND
-40°C to +85°C 16 Plastic DIP
-40°C to +85°C 16 Plastic DIP
-40°C to +85°C 16 QSOP
-40°C to +85°C 16 QSOP
UPO
PDE
MAX533
V
DD
-55°C to +125°C 16 CERDIP**
-55°C to +125°C 16 CERDIP**
12 DGND
11 DIN
LDAC
CLR
*Dice are tested at T = +25°C.
A
10
9
SCLK
CS
**Contact factory for availability and processing to MIL-STD-883.
DOUT
Functional Diagram appears at end of data sheet.
DIP/QSOP
SPI and QSPI are trademarks of Motorola, Inc. Microwire is a trademark of National Semiconductor Corp.
________________________________________________________________ Maxim Integrated Products
1
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