Rainbow Electronics MAX534 - Manual

_______________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
____________________________Features
♦ +4.5V to +5.5V Single-Supply Operation
♦ Ultra-Low Supply Current:
0.8mA while Operating
2.5µA in Shutdown Mode
♦ Ultra-Small 16-Pin QSOP Package
♦ Ground to V DD Reference Input Range
♦ 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
♦ Power-On Reset Clears Serial Interface and Sets
All Registers to Zero
♦ Software Shutdown
♦ Software-Programmable Logic Output (µC I/O
Extender)
♦ Asynchronous Hardware Clear Resets All Internal
Registers to Zero
MAX534
+5V, Low-Power, 8-Bit Quad DAC
with Rail-to-Rail Output Buffers
________________________________________________________________ Maxim Integrated Products 1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
OUTC
OUTD
AGND
V DD
DGND
DIN
SCLK
CS
OUTB
OUTA
REF
UPO
PDE
LDAC
CLR
DOUT
TOP VIEW
MAX534
DIP/QSOP
__________________Pin Configuration
19-1105; Rev 0; 8/96
PART
MAX534ACPE
MAX534BCPE
MAX534ACEE 0°C to +70°C
0°C to +70°C
0°C to +70°C
TEMP. RANGE PIN-PACKAGE
16 Plastic DIP
16 Plastic DIP
16 QSOP
______________Ordering Information
*Dice are tested at T A = +25°C.
**Contact factory for availability and processing to MIL-STD-883.
SPI and QSPI are trademarks of Motorola, Inc. Microwire is a trademark of National Semiconductor Corp.
Functional Diagram appears at end of data sheet.
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
MAX534BCEE 0°C to +70°C 16 QSOP
MAX534BC/D 0°C to +70°C Dice*
MAX534AEPE -40°C to +85°C 16 Plastic DIP
MAX534BEPE -40°C to +85°C 16 Plastic DIP
MAX534AEEE -40°C to +85°C 16 QSOP
MAX534BEEE -40°C to +85°C 16 QSOP
MAX534AMJE -55°C to +125°C 16 CERDIP**
MAX534BMJE -55°C to +125°C 16 CERDIP**
INL
(LSB)
±1
±2
±1
±2
±2
±1
±2
±1
±2
±1
±2