MAX534 Datasheet, PDF (1/16 Pages) Maxim Integrated Products – +5V, Low-Power, 8-Bit Quad DAC with Rail-to-Rail Output Buffers

19-1105; Rev 0; 8/96
+5V, Low-Power, 8-Bit Quad DAC
with Rail-to-Rail Output Buffers
_______________General Description
The MAX534 serial-input, voltage-output, 8-bit quad dig-
ital-to-analog converter (DAC) operates from a single
+4.5V to +5.5V supply. Internal precision buffers swing
rail to rail, and the reference input range includes both
ground and the positive rail. The MAX534 features a
2.5µA 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 independently or
simultaneously with a single software command. 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
MAX534 is available in a 16-pin QSOP that occupies the
same area as an 8-pin SO.
For operation guaranteed to 2.7V, see the MAX533
data sheet.
________________________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
MAX534
16 OUTC
15 OUTD
14 AGND
13 V_DD
12 DGND
11 DIN
10 SCLK
9 CS
____________________________Features
o +4.5V to +5.5V Single-Supply Operation
o Ultra-Low Supply Current:
0.8mA while Operating
2.5µA 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 (µC I/O
Extender)
o Asynchronous Hardware Clear Resets All Internal
Registers to Zero
______________Ordering Information
PART
TEMP. RANGE
PIN-PACKAGE
INL
(LSB)
MAX534ACPE
0°C to +70°C 16 Plastic DIP
±1
MAX534BCPE
0°C to +70°C 16 Plastic DIP
±2
MAX534ACEE
0°C to +70°C 16 QSOP
±1
MAX534BCEE
0°C to +70°C 16 QSOP
±2
MAX534BC/D
0°C to +70°C Dice*
±2
MAX534AEPE -40°C to +85°C 16 Plastic DIP
±1
MAX534BEPE -40°C to +85°C 16 Plastic DIP
±2
MAX534AEEE -40°C to +85°C 16 QSOP
±1
MAX534BEEE -40°C to +85°C 16 QSOP
±2
MAX534AMJE -55°C to +125°C 16 CERDIP**
±1
MAX534BMJE -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.
DIP/QSOP
SPI and QSPI are trademarks of Motorola, Inc. Microwire is a trademark of National Semiconductor Corp.
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