Rainbow-electronics MAX5151 User Manual

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_______________General Description
The MAX5150/MAX5151 low-power, serial, voltage-out-
put, dual 13-bit digital-to-analog converters (DACs)
consume only 500µA from a single +5V (MAX5150) or
+3V (MAX5151) supply. These devices feature Rail-to-
Rail
®
output swing and are available in a space-saving
16-pin QSOP package. To maximize the dynamic
range, the DAC output amplifiers are configured with an
internal gain of +2.
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 reg-
isters to be updated independently or simultaneously
with a 16-bit serial word. Additional features include
programmable shutdown (2µA), 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. These devices provide a programmable logic
pin for added functionality, and a serial-data output pin
for daisy-chaining.
________________________Applications
Industrial Process Control Remote Industrial Controls
Digital Offset and Gain Microprocessor-
Adjustment Controlled Systems
Motion Control Automatic Test
Equipment (ATE)
____________________________Features
13-Bit Dual DAC with Internal Gain of +2
Rail-to-Rail Output Swing
16µs Settling Time
Single-Supply Operation: +5V (MAX5150)
+3V (MAX5151)
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
MAX5150/MAX5151
Low-Power, Dual, 13-Bit Voltage-Output DACs
with Serial Interface
________________________________________________________________
Maxim Integrated Products
1
19-1255; Rev 0; 8/97
______________Ordering Information
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.
SPI and QSPI are trademarks of Motorola, Inc.
Microwire is a trademark of National Semiconductor Corp.
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.
REFA
V
DD
AGND
DGNDPDLCL
DOUT
16-BIT
SHIFT
REGISTER
SERIAL
CONTROL
INPUT
REG A
SCLK
UPO
REFB
DINCS
DAC A
DAC B
OUTB
R
R
FBB
OUTA
R
R
FBA
DAC
REG A
INPUT
REG B
LOGIC
OUTPUT
DECODE
CONTROL
DAC
REG B
MAX5150
MAX5151
_________________________________________________________Functional Diagram
Ordering Information continued at end of data sheet.
*
Dice are tested at T
A
= +25°C, DC parameters only.
INL
(LSB)
PIN-PACKAGETEMP. RANGEPART
±1
±1/2
±1
±1/2
16 QSOP
16 QSOP
16 Plastic DIP
16 Plastic DIP0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°CMAX5150BCEE
MAX5150ACEE
MAX5150BCPE
MAX5150ACPE
Pin Configuration appears at end of data sheet.
±1Dice*0°C to +70°CMAX5150BC/D
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Summary of Contents

Page 1 - MAX5150/MAX5151

_______________General DescriptionThe MAX5150/MAX5151 low-power, serial, voltage-out-put, dual 13-bit digital-to-analog converters (DACs)consume only

Page 2

MSB LSBMAX5150/MAX5151puts become high impedance, and the serial inter-face remains active. Data in the input registers issaved, allowing the MAX5150/

Page 3

The address and control bits determine the MAX5150/MAX5151's response, as outlined in Table 1.The MAX5150/MAX5151's digital inputs are doubl

Page 4

MAX5150/MAX5151Low-Power, Dual, 13-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

MAX5150/MAX5151Bipolar Output The MAX5150/MAX5151 can be configured for a bipo-lar output, as shown in Figure 11. The output voltage isgiven by the eq

Page 7

The microprocessor then programs the DAC to set anoutput voltage at the midpoint of the two calibrated val-ues. Applications include tachometers, moti

Page 8

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses arei

Page 9

MAX5150/MAX5151Low-Power, Dual, 13-Bit Voltage-Output DACswith Serial Interface2 _____________________________________________________________________

Page 10

MAX5150/MAX5151Low-Power, Dual, 13-Bit Voltage-Output DACswith Serial Interface_______________________________________________________________________

Page 11

ResolutionMAX5150/MAX5151Low-Power, Dual, 13-Bit Voltage-Output DACswith Serial Interface4 ___________________________________________________________

Page 12

MAX5150/MAX5151Low-Power, Dual, 13-Bit Voltage-Output DACswith Serial Interface_______________________________________________________________________

Page 13

MAX5150/MAX5151Low-Power, Dual, 13-Bit Voltage-Output DACswith Serial Interface6 _____________________________________________________________________

Page 14

MAX5150/MAX5151Low-Power, Dual, 13-Bit Voltage-Output DACswith Serial Interface_______________________________________________________________________

Page 15

MAX5150/MAX5151Low-Power, Dual, 13-Bit Voltage-Output DACswith Serial Interface8 _____________________________________________________________________

Page 16

_______________Detailed DescriptionThe MAX5150/MAX5151 dual, 13-bit, voltage-outputDACs are easily configured with a 3-wire serial inter-face. These d

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