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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX545 Datasheet

+5V / Serial-Input / Voltage-Output / 14-Bit DACs

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MAX545 pdf
19-1088; Rev 3; 12/99
+5V, Serial-Input, Voltage-Output, 14-Bit DACs
General Description
The MAX544/MAX545 are serial-input, voltage-output,
14-bit digital-to-analog converters (DACs) that operate
from a single +5V supply. They provide 14-bit perfor-
mance (±0.5LSB INL and ±0.9LSB DNL) over tempera-
ture without any adjustments. The DAC output is
unbuffered, resulting in a low supply current of 0.3mA
and a low offset error of 0.6mV.
The DAC output range is 0V to VREF. For bipolar opera-
tion, matched scaling resistors are provided in the
MAX545 for use with an external precision op amp
(such as the MAX400), generating a ±VREF output
swing. The MAX545 also includes Kelvin-sense con-
nections for the reference and analog ground pins to
reduce layout sensitivity.
A 16-bit serial word is used to load data into the DAC
latch. The 10MHz, 3-wire serial interface is compatible
with SPI™/QSPI™/MICROWIRE™, and it also interfaces
directly with optocouplers for applications requiring isola-
tion. A power-on reset circuit clears the DAC output to 0V
(unipolar mode) when power is initially applied.
The MAX544 is available in 8-pin plastic DIP and SO
packages. The MAX545 is available in 14-pin plastic
DIP and SO packages.
Applications
Digital Offset and Gain Adjustment
Instrumentation
Industrial Process Control
Automated Test Equipment
Data-Acquisition Systems
Features
o Full 14-Bit Performance Without Adjustments
o +5V Single-Supply Operation
o Low Power: 1.5mW
o 1µs Settling Time
o Unbuffered Voltage Output Directly Drives 60k
Loads
o SPI/QSPI/MICROWIRE-Compatible Serial Interface
o Power-On Reset Circuit Clears DAC Output to 0V
(unipolar mode)
o Schmitt-Trigger Inputs for Direct Optocoupler
Interface
o Pin-Compatible 16-Bit Upgrades
(MAX541/MAX542)
Ordering Information
PART
MAX544ACPA
MAX544BCPA
MAX544ACSA
MAX544BCSA
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
8 Plastic DIP
8 Plastic DIP
8 SO
8 SO
INL
(LSB)
±1/2
±1
±1/2
±1
Ordering Information continued at end of data sheet.
Functional Diagrams
TOP VIEW
Pin Configurations
OUT 1
AGND 2
REF 3
CS 4
MAX544
RFB 1
OUT 2
8 VDD AGNDF 3
AGNDS 4
7 DGND
REFS 5
6 DIN
REFF 6
5 SCLK
CS 7
MAX545
14 VDD
13 INV
12 DGND
11 LDAC
10 DIN
9 N.C.
8 SCLK
DIP/SO
DIP/SO
REFF
REFS
CS
LDAC
SCLK
DIN
MAX545
RINV
VDD
RFB
14-BIT DAC
CONTROL
LOGIC
DATA LATCH
SERIAL INPUT REGISTER
RFB
INV
OUT
AGNDF
AGNDS
DGND
Functional Diagrams continued at end of data sheet.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
________________________________________________________________ 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 1-800-835-8769.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX545 Datasheet

+5V / Serial-Input / Voltage-Output / 14-Bit DACs

No Preview Available !

MAX545 pdf
+5V, Serial-Input, Voltage-Output, 14-Bit DACs
ABSOLUTE MAXIMUM RATINGS
VDD to DGND ...........................................................-0.3V to +6V
CS, SCLK, DIN, LDAC to DGND ..............................-0.3V to +6V
REF, REFF, REFS to AGND ........................-0.3V to (VDD + 0.3V)
AGND, AGNDF, AGNDS to DGND .......................-0.3V to +0.3V
OUT, INV to AGND DGND .......................................-0.3V to VDD
RFB to AGND DGND...................................................-6V to +6V
Maximum Current into Any Pin............................................50mA
Continuous Power Dissipation (TA = +70°C)
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) .....727mW
8-Pin SO (derate 5.88mW/°C above +70°C) .................471mW
14-Pin Plastic DIP (derate 10.00mW/°C above +70°C) ...800mW
14-Pin SO (derate 8.33mW/°C above +70°C) ...............667mW
14-Pin Ceramic SB (derate 10.00mW/°C above +70°C...800mW
Operating Temperature Ranges
MAX544 _C_ A/MAX545_C_D ..............................0°C to +70°C
MAX544 _E_ A/MAX545_E_D............................-40°C to +85°C
MAX545BMJD .................................................-55°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VDD = +5V ± 5%, VREF = +2.5V, AGND = DGND = 0, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
STATIC PERFORMANCE—ANALOG SECTION (RL = )
Resolution
N
14
Integral Nonlinearity
INL VDD = 5V
MAX54_A
MAX54_B
Differential Nonlinearity
DNL Guaranteed monotonic
Zero-Code Offset Error
ZSE
Zero-Code Tempco
Gain Error (Note 1)
ZSTC
Gain-Error Tempco
DAC Output Resistance
Bipolar Resistor Matching
ROUT
(Note 2)
MAX545
RFB/RINV
Ratio error
Bipolar Zero Offset Error
MAX545
Bipolar Zero Tempco
Power-Supply Rejection
BZSTC
PSR
MAX545
4.75V VDD 5.25V
REFERENCE INPUT
Reference Input Range
Reference Input Resistance
(Note 4)
VREF
RREF
(Note 3)
Unipolar mode
MAX545, bipolar mode
2.0
11.5
9.0
DYNAMIC PERFORMANCE—ANALOG SECTION (RL = , unipolar mode)
Voltage-Output Slew Rate
SR CL = 10pF (Note 5)
Output Settling Time
To ±1/2LSB of FS, CL = 10pF
DAC Glitch Impulse
Major-carry transition
Digital Feedthrough
Code = 0000 hex; CS = VDD; LDAC = 0V;
SCLK, DIN = 0V to VDD levels
TYP MAX UNITS
±0.15
±0.15
±0.15
±0.05
±0.1
6.25
1.0
±0.5
±0.5
±1
±0.9
±0.6
±5
Bits
LSB
LSB
mV
ppm/°C
LSB
ppm/°C
k
±0.03
±10
±1.0
%
LSB
ppm/°C
LSB
3.0 V
k
25 V/µs
1 µs
10 nVs
10 nVs
2 _______________________________________________________________________________________


Part Number MAX545
Description +5V / Serial-Input / Voltage-Output / 14-Bit DACs
Maker Maxim
Total Page 12 Pages
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