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MAX5544CSAMAXIMN/a100avaiLow-Cost / +5V / Serial-Input / Voltage-Output / 14-Bit DAC
MAX5544ESAMAXIMN/a5avaiLow-Cost / +5V / Serial-Input / Voltage-Output / 14-Bit DAC


MAX5544CSA ,Low-Cost / +5V / Serial-Input / Voltage-Output / 14-Bit DACApplicationsOrdering InformationHigh-Resolution Offset and Gain AdjustmentPART TEMP. RANGE PIN-PACK ..
MAX5544ESA ,Low-Cost / +5V / Serial-Input / Voltage-Output / 14-Bit DACELECTRICAL CHARACTERISTICS(V = +5V ±5%, V = +2.5V, V = V = 0, T = T to T , unless otherwise noted. ..
MAX5550ETE ,Dual, 10-Bit, Programmable, 30mA High-Output-Current DACApplicationsM AX5550E TE 16 Thin Q FN- E P * T1633F-3 ACZPIN Diode Biasing *EP = Exposed paddle. ..
MAX5550ETE+ ,Dual, 10-Bit, Programmable, 30mA High-Output-Current DACELECTRICAL CHARACTERISTICS(V = +2.7V to +5.25V, GND = 0, V = +1.25V, internal reference, R = 20kΩ ; ..
MAX5556ESA ,Low-Cost Stereo Audio DACApplications● Digital Video Recorders and Media Servers● Set-Top Boxes● Video-Game HardwareTypical ..
MAX5556ESA+ ,Low-Cost Stereo Audio DACElectrical Characteristics(V = +4.75V to +5.5V, V = 0V, R _ = 10kΩ, C _ = 10pF, 0dBFS sine-wave sig ..
MAZ3200 ,Small-signal deviceElectrical characteristics within part numbers T = 25°Ca• V = 2.0 V to 8.2 V (I = 5 mA)Z ZTemperat ..
MAZ3200-M ,Silicon planar typeZener DiodesMAZ3000 SeriesSilicon planar typeUnit : mm+ 0.22.8 − 0.3For stabilization of power supp ..
MAZ8024 ,Small-signal deviceelectrical characteristicswithin part numbersReverse current I V Specified value µ AR R*3Temperatur ..
MAZ8027-H ,Silicon planar typeElectrical characteristics within part numbers T = 25°CaTemperaturecoefficient ofZener voltage Rev ..
MAZ8027-L ,Silicon planar typeElectrical Characteristics T = 25°CaParameter Symbol Conditions Min Typ Max UnitForward voltage V ..
MAZ8030-H ,Silicon planar typeelectrical characteristicsZ Zwithin part numbersReverse current I V ··············· Specified value ..


MAX5544CSA-MAX5544ESA
Low-Cost / +5V / Serial-Input / Voltage-Output / 14-Bit DAC
General Description
The MAX5544 serial-input, voltage-output, 14-bit
monotonic digital-to-analog converter (DAC) operates
from a single +5V supply. The DAC output is
unbuffered, resulting in low 0.3mA supply current and
low 1LSB offset error. The DAC output range is 0V to
VREF. The DAC latch accepts a 16-bit serial word. A
power-on reset circuit clears the DAC output to 0V
(unipolar mode) when power is initially applied.
The 10MHz 3-wire serial interface is SPI™/QSPI™/
MICROWIRE™compatible and interfaces directly with
optocouplers for applications requiring isolation. The
MAX5544 is available in an 8-pin SO package.
Applications

High-Resolution Offset and Gain Adjustment
Industrial Process Control
Automated Test Equipment
Data Acquisition Systems
Features
Full 14-Bit Performance Without Adjustments+5V Single-Supply OperationLow Power: 1.5mW1µs Settling Time Unbuffered Voltage Output Directly Drives 60kΩ
Loads
SPI/QSPI/MICROWIRE-Compatible Serial InterfacePower-On Reset Circuit Clears DAC Output to 0V
(unipolar mode)
Schmitt Trigger Inputs for Direct Optocoupler
Interface
MAX5544
Low-Cost, +5V, Serial-Input,
Voltage-Output, 14-Bit DAC
Pin Configuration
Functional Diagram

19-1571; Rev 0; 12/99
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIREis a trademark of National Semiconductor Corp.
MAX5544
Low-Cost, +5V, Serial-Input,
Voltage-Output, 14-Bit DAC
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS

(VDD= +5V ±5%, VREF= +2.5V, VAGND= VDGND= 0, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°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.
VDDto DGND............................................................-0.3V to +6VCS, SCLK, DIN to DGND..........................................-0.3V to +6V
REF to AGND...............................................-0.3V to (VDD+0.3V)
AGND to DGND.....................................................-0.3V to +0.3V
OUT to AGND, DGND..............................................-0.3V to VDD
Maximum Current into Any Pin............................................50mA
Continuous Power Dissipation (TA= +70°C)
8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
Operating Temperature Ranges
MAX5544CSA.....................................................0°C to +70°C
MAX5544ESA..................................................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s)................................+300°C
MAX5544
Low-Cost, +5V, Serial-Input,
Voltage-Output, 14-Bit DAC
ELECTRICAL CHARACTERISTICS (continued)

(VDD= +5V ±5%, VREF= +2.5V, VAGND= VDGND= 0, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
TIMING CHARACTERISTICS

(VDD= +5V ±5%, VREF= +2.5V, VAGND= VDGND= 0, CMOS inputs, TA= TMINto TMAX, unless otherwise noted.)
Note 1:
Gain error tested at VREF= +2.0V, +2.5V, and +3.0V.
Note 2:
ROUTtolerance is typically ±20%.
Note 3:
Min/max ranges guaranteed by gain-error test. Operation outside min/max limits will result in degraded performance.
Note 4:
Reference input resistance is code dependent, minimum at 8554 hex.
Note 5:
Slew-rate value is measured from 0% to 63%.
Note 6:
Guaranteed by design. Not production tested.
MAX5544
Low-Cost, +5V, Serial-Input,
Voltage-Output, 14-Bit DAC
Typical Operating Characteristics

(VDD= +5V, VREF= +2.5V, TA = +25°C, unless otherwise noted.)
MAX5544
Low-Cost, +5V, Serial-Input,
Voltage-Output, 14-Bit DAC

MAX5544-12
MAJOR-CARRY OUTPUT GLITCH

2µs/div
OUT
AC-COUPLED
100mV/div
5V/div
MAX5544-13
DIGITAL FEEDTHROUGH

2µs/div
SCLK
5V/div
OUT
AC-COUPLED
50mV/div
CODE = 0000 hex
Typical Operating Characteristics (continued)

(VDD= +5V, VREF= +2.5V, TA = +25°C, unless otherwise noted.)
______________________________________________________________Pin Description
MAX5544
Low-Cost, +5V, Serial-Input,
Voltage-Output, 14-Bit DAC
--
Detailed Description

The MAX5544 voltage-output, 14-bit digital-to-analog
converter (DAC) offers 14-bit monotonicity with less
than 1LSB differential linearity error. Serial-data transfer
minimizes the number of package pins required.
The MAX5544 is composed of two matched DAC sec-
tions, with a 12-bit inverted R-2R DAC forming the
12LSBs and the 4MSBs derived from 15 identically
matched resistors. This architecture allows the lowest
glitch energy to be transferred to the DAC output on
major-carry transitions. It also decreases the DAC out-
put impedance by a factor of eight compared to a stan-
dard R-2R ladder, allowing unbuffered operation in
medium-load applications. Figure 1 is the timing dia-
gram.
Digital Interface

The MAX5544 digital interface is a standard 3-wire con-
nection compatible with SPI/QSPI/MICROWIRE inter-
faces. The chip-select input (CS) frames the serial data
loading at the data input pin (DIN). Immediately follow-
ing CS’s high-to-low transition, the data is shifted
synchronously and latched into the input register on the
rising edge of the serial-clock input (SCLK). After 16
data bits (14 data bits, plus two sub-bits set to zero)
have been loaded into the serial input register, it trans-
fers its contents to the DAC latch on CS’s low-to-high
transition (Figure 2). Note that if CSdoes not remain
low during the entire 16 SCLK cycles, data will be cor-
rupted. In this case, reload the DAC latch with a new
16-bit word.
External Reference

The MAX5544 operates with external voltage refer-
ences from 2V to 3V. The reference voltage determines
the DAC’s full-scale output voltage.
Power-On Reset

The MAX5544 has a power-on reset circuit to set the
DAC’s output to 0V in unipolar mode when VDDis first
applied. This ensures that unwanted DAC output volt-
ages will not occur immediately following a system
power-up, such as after power loss. In bipolar mode,
the DAC output is set to -VREF.
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