Rainbow-electronics MAX5159 User Manual

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_______________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.
________________________Applications
Digital Offset and Gain Adjustment
µP-Controlled Systems
Motion Control
Remote Industrial Controls
____________________________Features
10-Bit Dual DAC with Internal Gain of +2V/V
Rail-to-Rail Output Swing
8µs Settling Time
Single-Supply Operation: +5V (MAX5158)
+3V (MAX5159)
Low Quiescent Current: 500µA (normal operation)
2µA (shutdown mode)
SPI/QSPI and Microwire Compatible
Available in Space-Saving 16-Pin QSOP Package
Power-On Reset Clears Registers and DACs to Zero
Adjustable Output Offset
______________Ordering Information
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.
Ordering Information continued at end of data sheet.
*
Contact factory for availability.
REFA
V
DD
AGND
DGNDPDLCL
DOUT
16-BIT
SHIFT
REGISTER
SR
CONTROL
INPUT
REG A
INPUT
REG B
SCLK
UPO REFB
DINCS
DAC B
DAC A
DAC
REG A
LOGIC
OUTPUT
DECODE
CONTROL
DAC
REG B
MAX5158
MAX5159
OUTB
R
R
R
R
OSB
OUTA
OSA
_________________________________________________________Functional Diagram
MAX5158/MAX5159
Low-Power, Dual, 10-Bit, Voltage-Output DACs
with Serial Interface
________________________________________________________________
Maxim Integrated Products
1
19-1315; Rev 1; 12/97
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.
PIN-PACKAGETEMP. RANGEPART
16 QSOP-40°C to +85°CMAX5158EEE
16 Plastic DIP
16 QSOP
16 Plastic DIP0°C to +70°C
0°C to +70°C
-40°C to +85°CMAX5158EPE
MAX5158CEE
MAX5158CPE
16 CERDIP*-55°C to +125°CMAX5158MJE
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Summary of Contents

Page 1 - MAX5158/MAX5159

_______________General DescriptionThe MAX5158/MAX5159 low-power, serial, voltage-output, dual, 10-bit digital-to-analog converters (DACs)consume only

Page 2

MAX5158/MAX5159remains active. Data in the input registers is saved,allowing the MAX5158/MAX5159 to recall the outputstate prior to entering shutdown

Page 3

The MAX5158/MAX5159’s digital inputs are doublebuffered, which allows any of the following: loading theinput register(s) without updating the DAC regi

Page 4

MAX5158/MAX5159Low-Power, Dual, 10-Bit Voltage-Output DACswith Serial Interface12 ____________________________________________________________________

Page 5

Serial-Data OutputThe serial-data output, DOUT, is the internal shift regis-ter’s output. DOUT allows for daisy chaining of devicesand data readback.

Page 6

MAX5158/MAX5159produce a range of 0V to 2.5V with a 1.25V reference.Table 2 lists the unipolar output codes. An offset to theoutput can be achieved by

Page 7

Digital Calibration andThreshold SelectionFigure 13 shows the MAX5158/MAX5159 in a digitalcalibration application. With a bright light value appliedto

Page 8

MAX5158/MAX5159Low-Power, Dual, 13-Bit Voltage-Output DACswith Serial Interface16151413121110912345678AGND VDDOUTBOSBREFBPDLUPODOUTDGNDTOP VIEWMAX5158

Page 9

MAX5158/MAX5159Low-Power, Dual, 10-Bit Voltage-Output DACswith Serial Interface2 _____________________________________________________________________

Page 10

MAX5158/MAX5159Low-Power, Dual, 10-Bit, Voltage-Output DACswith Serial Interface______________________________________________________________________

Page 11

MAX5158/MAX5159Low-Power, Dual, 10-Bit Voltage-Output DACswith Serial Interface4 _____________________________________________________________________

Page 12

MAX5158/MAX5159Low-Power, Dual, 10-Bit, Voltage-Output DACswith Serial Interface______________________________________________________________________

Page 13

MAX5158/MAX5159Low-Power, Dual, 10-Bit Voltage-Output DACswith Serial Interface6 _____________________________________________________________________

Page 14

MAX5158/MAX5159Low-Power, Dual, 10-Bit, Voltage-Output DACswith Serial Interface______________________________________________________________________

Page 15

MAX5158/MAX5159Low-Power, Dual, 10-Bit Voltage-Output DACswith Serial Interface8 _____________________________________________________________________

Page 16

_______________Detailed DescriptionThe MAX5158/MAX5159 dual, 10-bit, voltage-outputDACs are easily configured with a 3-wire serial inter-face. These d

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