19-1315; Rev 1; 12/97
Low-Power, Dual, 10-Bit, Voltage-Output DACs
with Serial Interface
MAX5158/MAX5159
_______________General Description
The MAX5158/MAX5159 low-power, serial, voltage-
output, dual, 10-bit digital-to-analog converters (DACs)
consume only 500µA from a single +5V (MAX5158) or
+3V (MAX5159) supply. These devices feature Rail-to-
Rail
®
output swing and are available in a space-saving
16-pin QSOP package. To maximize dynamic range, the
DAC output amplifiers are configured with an internal gain
of +2V/V.
The 3-wire serial interface is SPI™/QSPI™ and
Microwire™ compatible. Each DAC has a double-
buffered input organized as an input register followed by
a DAC register, which allows the input and DAC registers
to be updated independently or simultaneously with a
16-bit serial word. Additional features include a 2µA pro-
grammable shutdown, hardware-shutdown lockout, a
separate reference-voltage input for each DAC that
accepts AC and DC signals, and an active-low clear input
(CL) that resets all registers and DACs to zero. The
MAX5158/MAX5159 provide a programmable logic pin
for added functionality and a serial-data output pin for
daisy chaining.
____________________________Features
o
10-Bit Dual DAC with Internal Gain of +2V/V
o
Rail-to-Rail Output Swing
o
8µs Settling Time
o
Single-Supply Operation: +5V (MAX5158)
+3V (MAX5159)
o
Low Quiescent Current: 500µA (normal operation)
2µA (shutdown mode)
o
SPI/QSPI and Microwire Compatible
o
Available in Space-Saving 16-Pin QSOP Package
o
Power-On Reset Clears Registers and DACs to Zero
o
Adjustable Output Offset
______________Ordering Information
PART
MAX5158CPE
MAX5158CEE
MAX5158EPE
MAX5158EEE
MAX5158MJE
TEMP. RANGE
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
PIN-PACKAGE
16 Plastic DIP
16 QSOP
16 Plastic DIP
16 QSOP
16 CERDIP*
________________________Applications
Digital Offset and Gain Adjustment
µP-Controlled Systems
Motion Control
Remote Industrial Controls
Ordering Information continued at end of data sheet.
*Contact
factory for availability.
_________________________________________________________Functional Diagram
DOUT
CL
PDL
DGND
AGND
V
DD
REFA
OSA
DECODE
CONTROL
R
R
INPUT
REG A
DAC
REG A
DAC A
R
OUTA
OSB
16-BIT
SHIFT
REGISTER
SR
CONTROL
MAX5158
MAX5159
LOGIC
OUTPUT
SCLK
UPO
INPUT
REG B
DAC
REG B
DAC B
R
OUTB
CS
DIN
REFB
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd. Microwire is a trademark of National Semiconductor Corp.
SPI and QSPI are trademarks of Motorola, Inc.
________________________________________________________________
Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
For small orders, phone 408-737-7600 ext. 3468.
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
