MAX533 Datasheet, PDF (1/16 Pages) Maxim Integrated Products – 2.7V, Low-Power, 8-Bit Quad DAC with Rail-to-Rail Output Buffers

19-1080; Rev 0; 6/96
2.7V, Low-Power, 8-Bit Quad DAC
with Rail-to-Rail Output Buffers
_______________General Description
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.
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.
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.
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.
________________________Applications
Digital Gain and Offset Adjustments
Programmable Attenuators
Programmable Current Sources
Portable Instruments
__________________Pin Configuration
TOP VIEW
OUTB 1
OUTA 2
REF 3
UPO 4
PDE 5
LDAC 6
CLR 7
DOUT 8
MAX533
16 OUTC
15 OUTD
14 AGND
13 V_DD
12 DGND
11 DIN
10 SCLK
9 CS
DIP/QSOP
____________________________Features
o +2.7V to +3.6V Single-Supply Operation
o Ultra-Low Supply Current:
0.7mA while Operating
1µA in Shutdown Mode
o Ultra-Small 16-Pin QSOP Package
o Ground to VDD Reference Input Range
o Output Buffer Amplifiers Swing Rail to Rail
o 10MHz Serial Interface, Compatible with SPI, QSPI
(CPOL = CPHA = 0 or CPOL = CPHA = 1), and
Microwire
o Double-Buffered Registers for Synchronous
Updating
o Serial Data Output for Daisy Chaining
o Power-On Reset Clears Serial Interface and Sets
All Registers to Zero
o Software Shutdown
o Software-Programmable Logic Output
o Asynchronous Hardware Clear Resets All Internal
Registers to Zero
______________Ordering Information
PART
TEMP. RANGE
PIN-PACKAGE
INL
(LSB)
MAX533ACPE 0°C to +70°C 16 Plastic DIP
±1
MAX533BCPE 0°C to +70°C 16 Plastic DIP
±2
MAX533ACEE 0°C to +70°C 16 QSOP
±1
MAX533BCEE 0°C to +70°C 16 QSOP
±2
MAX533BC/D
0°C to +70°C Dice*
±2
MAX533AEPE -40°C to +85°C 16 Plastic DIP
±1
MAX533BEPE -40°C to +85°C 16 Plastic DIP
±2
MAX533AEEE -40°C to +85°C 16 QSOP
±1
MAX533BEEE -40°C to +85°C 16 QSOP
±2
MAX533AMJE -55°C to +125°C 16 CERDIP**
±1
MAX533BMJE -55°C to +125°C 16 CERDIP**
±2
*Dice are tested at TA = +25°C.
**Contact factory for availability and processing to MIL-STD-883.
Functional Diagram appears at end of data sheet.
SPI and QSPI are trademarks of Motorola, Inc. Microwire is a trademark of National Semiconductor Corp.
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