max513esdt Maxim Integrated Products, Inc., max513esdt Datasheet

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max513esdt

Manufacturer Part Number
max513esdt
Description
Low-cost, Triple, 8-bit Voltage-output Dacs With Serial Interface
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
The MAX512/MAX513 contain three 8-bit, voltage-output
digital-to-analog converters (DAC A, DAC B, and DAC C).
Output buffer amplifiers for DACs A and B provide voltage
outputs while reducing external component count. The
output buffer for DAC A can source or sink 5mA to within
0.5V of V
sink 0.5mA to within 0.5V of V
unbuffered, providing a third voltage output with increased
accuracy. The MAX512 operates with a single
+5V ±10% supply, and the MAX513 operates with a
+2.7V to +3.6V supply. Both devices can also operate
with split supplies.
The 3-wire serial interface has a maximum operating fre-
quency of 5MHz and is compatible with SPI™, QSPI™,
and Microwire™. The serial input shift register is 16 bits
long and consists of 8 bits of DAC input data and 8 bits
for DAC selection and shutdown. DAC registers can be
loaded independently or in parallel at the positive edge
of
iary control.
Ultra-low power consumption and small packages
(14-pin DIP/SO) make the MAX512/MAX513 ideal for
portable and battery-powered applications. Supply cur-
rent is only 1mA, dropping to less than 1µA in shutdown.
Any of the three DACs can be independently shut down.
In shutdown mode, the DAC's R-2R ladder network is
disconnected from the reference input, minimizing sys-
tem power consumption.
________________________Applications
19-0252; Rev 2; 5/96
Microwire is a trademark of National Semiconductor Corp. SPI and QSPI are trademarks of Motorola Inc.
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
_______________General Description
__________________Pin Configuration
C
S
TOP VIEW
. A latched logic output is also available for auxil-
Digital Gain and Offset Adjustment
Programmable Attenuators
Programmable Current Sources
Programmable Voltage Sources
RF Digitally Adjustable Bias Circuits
VCO Tuning
DD
Low-Cost, Triple, 8-Bit Voltage-Output DACs
or V
RESET
SCLK
GND
V
DIN
V
CS
DD
SS
SS
________________________________________________________________ Maxim Integrated Products
. The buffer for DAC B can source or
1
2
3
4
5
6
7
MAX512
MAX513
DIP/SO
DD
14
13
12
11
10
9
8
or V
LOUT
I.C.
REFAB
OUTC
OUTB
OUTA
REFC
SS
. DAC C is
____________________________Features
Ordering Information continued at end of data sheet.
* Contact factory for dice specifications.
________________Functional Diagram
______________Ordering Information
MAX512CPD
MAX512CSD
MAX512C/D
Operate from a Single +5V (MAX512) or
+3V (MAX513) Supply, or from Bipolar Supplies
Low Power Consumption
Unipolar or Bipolar Outputs
5MHz, 3-Wire Serial Interface
SPI, QSPI, and Microwire Compatible
Two Buffered, Bipolar-Output DACs (DACs A/B)
Independently Programmable Shutdown Mode
Space-Saving 14-Pin SO/DIP Packages
Pin and Software Reset
SCLK
3
with Serial Interface
PART
1mA Operating Current
<1µA Shutdown Current
1
DIN
RESET
4
2
CS
TEMP. RANGE
LATCH
LATCH
LATCH
LATCH
0°C to +70°C
0°C to +70°C
0°C to +70°C
DAC
DAC
DAC
A
B
C
REFAB
12
11
REFC
DAC C
DAC A
DAC B
5
V
DD
7
V
SS
MAX512
MAX513
14 Plastic DIP
14 SO
Dice*
PIN-PACKAGE
6
GND
14
OUTA
8
OUTB
9
OUTC
10
LOUT
1

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max513esdt Summary of contents

Page 1

Rev 2; 5/96 Low-Cost, Triple, 8-Bit Voltage-Output DACs _______________General Description The MAX512/MAX513 contain three 8-bit, voltage-output digital-to-analog converters (DAC A, DAC B, and DAC C). Output buffer amplifiers for DACs A and B provide voltage outputs while reducing external ...

Page 2

Low-Cost, Triple, 8-Bit Voltage-Output DACs with Serial Interface ABSOLUTE MAXIMUM RATINGS V to GND ................................................................ -0.3V, + GND................................................................. -6V, +0. ................................................................ -0.3V, +12V DD SS Digital Inputs and Outputs to GND............... -0.3V, (V ...

Page 3

Low-Cost, Triple, 8-Bit Voltage-Output DACs ELECTRICAL CHARACTERISTICS (continued +4.5V to +5.5V for MAX512 unless otherwise noted. Typical values are MIN MAX PARAMETER SYMBOL DAC OUTPUTS Output Voltage ...

Page 4

Low-Cost, Triple, 8-Bit Voltage Output DACs with Serial Interface TIMING CHARACTERISTICS (Note +4.5V to +5.5V for MAX512 +2.7V to +3.6V for MAX513 PARAMETER SYMBOL SERIAL INTERFACE TIMING – — – ...

Page 5

Low-Cost, Triple, 8-Bit Voltage Output DACs ____________________________Typical Operating Characteristics (continued +25°C, unless otherwise noted.) A SUPPLY CURRENT vs. REFERENCE VOLTAGE 1.0 0 ...

Page 6

Low-Cost, Triple, 8-Bit Voltage Output DACs with Serial Interface ____________________________Typical Operating Characteristics (continued +25°C, unless otherwise noted.) A LINE-TRANSIENT RESPONSE (OUTA) 20 s/div REFAB = 2.56V, NO LOAD, CODE = ALL 100mV/div DD, B ...

Page 7

Low-Cost, Triple, 8-Bit Voltage Output DACs ____________________________Typical Operating Characteristics (continued +25°C, unless otherwise noted.) A POSITIVE SETTLING TIME (DAC A) 20 s/div 0V, REFAB = ...

Page 8

Low-Cost, Triple, 8-Bit Voltage-Output DACs with Serial Interface _____________________________Typical Operating Characteristics (continued +25°C, unless otherwise noted.) A TIME EXITING SHUTDOWN MODE 20 s/div 0V, REFAB = ...

Page 9

Low-Cost, Triple, 8-Bit Voltage-Output DACs _______________Detailed Description Analog Section The MAX512/MAX513 contain three 8-bit, voltage-out- put, digital-to-analog converters (DACs). The DACs are “inverted” R-2R ladder networks using complementary switches that convert 8-bit digital inputs into equivalent analog output voltages in ...

Page 10

Low-Cost, Triple, 8-Bit Voltage-Output DACs with Serial Interface When programmed to shutdown mode, the outputs of DAC A and B go into a high-impedance state. Virtually no current flows into or out of the buffer amplifiers in that state. The ...

Page 11

Low-Cost, Triple, 8-Bit Voltage-Output DACs Table 2. Serial-Interface Programming Commands CONTROL ...

Page 12

Low-Cost, Triple, 8-Bit Voltage-Output DACs with Serial Interface CS t CSS t CH SCLK DIN LOUT Figure 3. MAX512/MAX513 Detailed Serial-Interface Timing Diagram Applications Information _____________ Power-Supply and Reference Operating Ranges The MAX512 is fully specified ...

Page 13

Low-Cost, Triple, 8-Bit Voltage-Output DACs Table 3. Unipolar Code Table DAC CONTENTS REF_ REF_ REF_ 1 ...

Page 14

Low-Cost, Triple, 8-Bit Voltage-Output DACs with Serial Interface REFAB DIN SCLK 3 DAC LATCH A DAC LATCH B DAC LATCH C LATCH RESET 4 0.22 F Figure 4. Bipolar Output Circuit V DD1 RF IN REFAB ...

Page 15

Low-Cost, Triple, 8-Bit Voltage-Output DACs _Ordering Information (continued) PART TEMP. RANGE MAX512EPD -40°C to +85°C MAX512ESD -40°C to +85°C MAX512MJD -55°C to +125°C MAX513CPD 0°C to +70°C MAX513CSD 0°C to +70°C MAX513C/D 0°C to +70°C MAX513EPD -40°C to +85°C MAX513ESD ...

Page 16

Low-Cost, Triple, 8-Bit Voltage-Output DACs with Serial Interface ________________________________________________________Package Information Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in ...

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