513CS Datasheet PDF - Maxim Integrated Products
| Part Number | 513CS | |
| Description | MAX513 | |
| Manufacturers | Maxim Integrated Products | |
| Logo |  |
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There is a preview and 513CS download ( pdf file ) link at the bottom of this page. Total 16 Pages | ||
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19-0252; Rev 2; 5/96
Low-Cost, Triple, 8-Bit Voltage-Output DACs
with Serial Interface
_______________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 component count. The
output buffer for DAC A can source or sink 5mA to within
0.5V of VDD or VSS. The buffer for DAC B can source or
sink 0.5mA to within 0.5V of VDD or VSS. DAC C is
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
loofaC–d—Se–.d
independently or in parallel at the positive
A latched logic output is also available for
edge
auxil-
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
www.DataSheet4U.com
Digital Gain and Offset Adjustment
Programmable Attenuators
Programmable Current Sources
Programmable Voltage Sources
RF Digitally Adjustable Bias Circuits
VCO Tuning
__________________Pin Configuration
TOP VIEW
____________________________Features
o Operate from a Single +5V (MAX512) or
+3V (MAX513) Supply, or from Bipolar Supplies
o Low Power Consumption
1mA Operating Current
<1µA Shutdown Current
o Unipolar or Bipolar Outputs
o 5MHz, 3-Wire Serial Interface
o SPI, QSPI, and Microwire Compatible
o Two Buffered, Bipolar-Output DACs (DACs A/B)
o Independently Programmable Shutdown Mode
o Space-Saving 14-Pin SO/DIP Packages
o Pin and Software Reset
______________Ordering Information
PART
TEMP. RANGE
PIN-PACKAGE
MAX512CPD
0°C to +70°C
14 Plastic DIP
MAX512CSD
0°C to +70°C
14 SO
MAX512C/D
0°C to +70°C
Dice*
Ordering Information continued at end of data sheet.
* Contact factory for dice specifications.
________________Functional Diagram
SCLK
3
DIN
1
CS REFAB REFC
2 12 11
DAC
LATCH
A
DAC A
DAC
LATCH
B
DAC B
OUTA
8
OUTB
9
DIN 1
CS 2
SCLK 3
RESET 4
VDD 5
GND 6
VSS 7
MAX512
MAX513
14 LOUT
13 I.C.
12 REFAB
11 REFC
10 OUTC
9 OUTB
8 OUTA
DIP/SO
DAC
LATCH
C
LATCH
4
RESET
DAC C
OUTC
10
MAX512
MAX513
LOUT
14
57
VDD VSS
6
GND
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
|
| |
 
Low-Cost, Triple, 8-Bit Voltage Output DACs
with Serial Interface
____________________________Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. REFERENCE VOLTAGE
1.5
1.0 IDD, VDD = 5V, VSS = -5V
0.5 IDD, VDD = 3V, VSS = -3V
REFC GROUNDED FOR REF_ < 0
0 CODE = ALL 1s
-0.5 ISS, VDD = 3V, VSS = -3V
-1.0
ISS, VDD = 5V, VSS = -5V
-1.5
-5 -4
-3 -2 -1 0 1 2
REFAB = REFC (V)
3
REFERENCE FEEDTHROUGH
vs. FREQUENCY
0 VDD = 3V, VSS = GND = 0V
REF_ FROM 0V TO 2.9V
-20 NO LOAD
CODE = ALL 0s
4
-40
DAC C
-60
1.370
POSITIVE SUPPLY CURRENT
vs. TEMPERATURE
1.365
1.360
1.355
1.350
1.345
1.340
-60 -40 -20
VDD = +5V, VSS = GND = 0V
REFAB = REFC = VDD
ALL LOGIC INPUTS = +5V
ALL DACs SET TO ALL 1s
0 20 40 60 80 100 120 140
TEMPERATURE (°C)
REFERENCE LARGE-SIGNAL
FREQUENCY RESPONSE
5
0
-5
-10
-80
-100
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-120
0.01
DAC A, B
0.1 1 10 100
FREQUENCY (kHz)
1000
-15
-20 VDD = 3V, VSS = GND = 0V
REFAB, REFC
-25 SINE WAVE 0V TO VDD
0.001 0.01 0.1 1 10 100 1000
FREQUENCY (kHz)
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
4.5
VDD = +5V, VSS = GND = 0V
4.0 REFAB = REFC = VDD
ALL LOGIC INPUTS = +5V
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
REFERENCE SMALL-SIGNAL
FREQUENCY RESPONSE
0
DAC A
-20 DAC C
DAC B
-40
-60
VDD = 3V, VSS = GND = 0V
REFAB, REFC
-80 SINE WAVE ±40mV
0.1k 1k
10k 100k
FREQUENCY (Hz)
1M
10M
_______________________________________________________________________________________ 5
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