MAX539BCSA ,+5V, Low-Power, Voltage-Output, Serial 12-Bit DACsMAX531/MAX538/MAX53919-0172; Rev 6; 2/97+5V, Low-Power, Voltage-Output,Serial 12-Bit DACs__________ ..
MAX539BCSA ,+5V, Low-Power, Voltage-Output, Serial 12-Bit DACsMAX531/MAX538/MAX53919-0172; Rev 6; 2/97+5V, Low-Power, Voltage-Output,Serial 12-Bit DACs__________ ..
MAX539BCSA ,+5V, Low-Power, Voltage-Output, Serial 12-Bit DACsApplications______________Ordering InformationBattery-Powered Test InstrumentsERRORPART TEMP. RANGE ..
MAX539BEPA+ ,+5V, Low-Power, Voltage-Output, Serial 12-Bit DACsFeaturesThe MAX531/MAX538/MAX539 are low-power, voltage-♦ Operate from Single +5V Supplyoutput, 12- ..
MAX539BESA ,+5V, Low-Power, Voltage-Output, Serial 12-Bit DACsELECTRICAL CHARACTERISTICS—Single +5V Supply(V = +5V ±10%, V = 0V, AGND = DGND = 0V, REFIN = 2.048V ..
MAX5400EKA+T ,256-Tap SOT-PoT, Low-Drift Digital Potentiometers in SOT23FeaturesThe MAX5400/MAX5401 digital potentiometers offer♦ Miniature 8-Pin SOT23 (3mm x 3mm)256-tap ..
MAX991ESA ,High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O ComparatorsApplicationsPortable/Battery- Threshold Detectors/IN+ 3 4 IN-Powered Systems DiscriminatorsMobile C ..
MAX991ESA ,High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O ComparatorsFeaturesThe MAX987/MAX988/MAX991/MAX992/MAX995/' 120ns Propagation DelayMAX996 single/dual/quad mic ..
MAX991ESA ,High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O ComparatorsGeneral Description ________
MAX991ESA+ ,High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O ComparatorsGeneral Description ________
MAX991EUA ,High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O ComparatorsApplicationsPortable/Battery- Threshold Detectors/IN+ 3 4 IN-Powered Systems DiscriminatorsMobile C ..
MAX991EUA ,High-Speed, Micropower, Low-Voltage, SOT23, Rail-to-Rail I/O ComparatorsApplicationsPortable/Battery- Threshold Detectors/IN+ 3 4 IN-Powered Systems DiscriminatorsMobile C ..
MAX531ACPD-MAX531AESD-MAX531BCPD-MAX531BCSD-MAX531BEPD-MAX531BESD-MAX538ACPA-MAX538ACSA-MAX538AESA-MAX538BCPA-MAX538BCSA-MAX538BESA-MAX539ACPA-MAX539ACSA-MAX539BCPA-MAX539BCSA-MAX539BESA
+5V, Low-Power, Voltage-Output, Serial 12-Bit DACs
_______________General DescriptionThe MAX531/MAX538/MAX539 are low-power, voltage-
output, 12-bit digital-to-analog converters (DACs) speci-
fied for single +5V power-supply operation. The MAX531
can also be operated with ±5V supplies. The
MAX538/MAX539 draw only 140µA, and the MAX531
(with internal reference) draws only 260µA. The
MAX538/MAX539 come in 8-pin DIP and SO packages,
while the MAX531 comes in 14-pin DIP and SO pack-
ages. All parts have been trimmed for offset voltage,
gain, and linearity, so no further adjustment is necessary.
The MAX538’s buffer is fixed at a gain of +1 and the
MAX539’s buffer at a gain of +2. The MAX531’s internal
op amp may be configured for a gain of +1 or +2, as
well as for unipolar or bipolar output voltages. The
MAX531 can also be used as a four-quadrant multiplier
without external resistors or op amps.
For parallel data inputs, see the MAX530 data sheet.
_______________________ApplicationsBattery-Powered Test Instruments
Digital Offset and Gain Adjustment
Battery-Operated/Remote Industrial Controls
Machine and Motion Control Devices
Cellular Telephones
___________________________FeaturesOperate from Single +5V SupplyBuffered Voltage OutputInternal 2.048V Reference (MAX531)140µA Supply Current (MAX538/MAX539)INL = ±1/2LSB (max)Guaranteed Monotonic over TemperatureFlexible Output Ranges:
0V to VDD(MAX531/MAX539)
VSSto VDD(MAX531)
0V to 2.6V (MAX531/MAX538)8-Pin SO/DIP (MAX538/MAX539)Power-On ResetSerial Data Output for Daisy-Chaining
______________Ordering Information
MAX531/MAX538/MAX539
+5V, Low-Power, Voltage-Output,
Serial 12-Bit DACs
_________________Pin Configurations
________________Functional Diagram19-0172; Rev 6; 2/97
Ordering Information continued at end of data sheet.*Dice are specified at TA= +25°C only.
MAX531/MAX538/MAX539
+5V, Low-Power, Voltage-Output
Serial 12-Bit DACs
ABSOLUTE MAXIMUM RATINGSVDDto DGND and VDDto AGND................................-0.3V, +6V
VSSto DGND and VSSto AGND.................................-6V, +0.3V
VDDto VSS.................................................................-0.3V, +12V
AGND to DGND........................................................-0.3V, +0.3V
Digital Input Voltage to DGND......................-0.3V, (VDD + 0.3V)
REFIN..................................................(VSS - 0.3V), (VDD + 0.3V)
REFOUT to AGND.........................................-0.3V, (VDD + 0.3V)
RFB.....................................................(VSS- 0.3V), (VDD + 0.3V)
BIPOFF................................................(VSS- 0.3V), (VDD + 0.3V)
VOUT(Note 1)................................................................VSS, VDD
Continuous Current, Any Pin................................-20mA, +20mA
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
Operating Temperature Ranges
MAX53__C__.....................................................0°C to +70°C
MAX53__E__..................................................-40°C to +85°C
Storage Temperature Range.............................-65°C to +165°C
Lead Temperature (soldering, 10sec).............................+300°C
ELECTRICAL CHARACTERISTICS—Single +5V Supply(VDD= +5V ±10%, VSS= 0V, AGND = DGND = 0V, REFIN = 2.048V (external), RFB = BIPOFF = VOUT (MAX531), CREFOUT= 33µF
(MAX531), RL= 10kΩ, CL= 100pF, TA= TMINto TMAX, unless otherwise noted.)
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.
Note 1:The output may be shorted to VDD, VSS,or AGND if the package power dissipation limit is not exceeded.
MAX531/MAX538/MAX539
+5V, Low-Power, Voltage-Output,
Serial 12-Bit DACs
ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)(VDD= +5V ±10%, VSS= 0V, AGND = DGND = 0V, REFIN = 2.048V (external), RFB = BIPOFF = VOUT (MAX531), CREFOUT= 33µF
(MAX531), RL= 10kΩ, CL= 100pF, TA= TMINto TMAX, unless otherwise noted.)
MAX531/MAX538/MAX539
+5V, Low-Power, Voltage-Output,
Serial 12-Bit DACs
ELECTRICAL CHARACTERISTICS—Dual Supplies (MAX531 Only)(VDD= +5V ±10%, VSS= -5V ±10%, AGND = DGND = 0V, REFIN = 2.048V (external), RFB = BIPOFF = VOUT, CREFOUT= 33µF, = 10kΩ, CL= 100pF, TA= TMINto TMAX, unless otherwise noted.)
MAX531/MAX538/MAX539
+5V, Low-Power, Voltage-Output,
Serial 12-Bit DACs
Note 2:In single-supply operation, INL and GE calculated from code 11 to code 4095. Tested at VDD= +5V.
Note 3:This specification applies to both gain-error power-supply rejection ratio and offset-error power-supply rejection ratio.
Note 4:Guaranteed by design.
Note 5:Tested at IOUT= 100µA. The reference can typically source up to 5mA (see Typical Operating Characteristics).
ELECTRICAL CHARACTERISTICS—Dual Supplies (MAX531 Only) (continued)(VDD= +5V ±10%, VSS= -5V ±10%, AGND = DGND = 0V, REFIN = 2.048V (external), RFB = BIPOFF = VOUT, CREFOUT= 33µF, = 10kΩ, CL= 100pF, TA= TMINto TMAX, unless otherwise noted.)
MAX531/MAX538/MAX539
+5V, Low-Power, Voltage-Output,
Serial 12-Bit DACsSUPPLY CURRENT vs.
TEMPERATURE
MAX531-7
TEMPERATURE (°C)
SUPPLY CURRENT (
-14100100k
MAX531
GAIN vs. FREQUENCYMAX531-8
FREQUENCY (Hz)
GAIN (dB)
-1010k1k100k
MAX531
AMPLIFIER SIGNAL-TO-NOISE RATIOMAX531-9
FREQUENCY (Hz)
SIGNAL-TO-NOISE RATIO (dB)20
10k100
MAX531
REFERENCE VOLTAGE vs.
TEMPERATURE
MAX531-6
TEMPERATURE (°C)
REFERENCE VOLTAGE (V)
-110101k100k
ANALOG FEEDTHROUGH vs.
FREQUENCYMAX531-5
FREQUENCY (Hz)
ANALOG FEEDTHROUGH (dB)
10010k1M
VDD-5VDD-1
OUTPUT SOURCE CAPABILITY vs.
OUTPUT PULL-UP VOLTAGEMAX531-4
OUTPUT PULL-UP VOLTAGE (V)
OUTPUT SOURCE CAPABILITY (mA)
VDD-2
VDD-4VDD-3
VDD-0
INTEGRAL NONLINEARITY vs. DIGITAL
INPUT CODE (FIRST 12 CODES)
MAX531-1
DIGITAL INPUT CODE (DECIMAL)
INTEGRAL NONLINEARITY (LSB)
OUTPUT SINK CAPABILITY vs.
OUTPUT PULL-DOWN VOLTAGE
MAX531-3
OUTPUT PULL-DOWN VOLTAGE (V)
OUTPUT SINK CAPABILITY (mA)
__________________________________________Typical Operating Characteristics
(VDD= +5V, VREFIN= 2.048V, TA= +25°C, unless otherwise noted.)
MAX531/MAX538/MAX539
+5V, Low-Power, Voltage-Output,
Serial 12-Bit DACs
____________________________Typical Operating Characteristics (continued)(VDD= +5V, VREFIN= 2.048V, TA= +25°C, unless otherwise noted.)
MAX531
GAIN AND PHASE vs. FREQUENCY
MAX531-10
FREQUENCY (kHz)
GAIN (dB)100
PHASE (degrees)
MAX531 REFERENCE OUTPUT VOLTAGE
vs. REFERENCE LOAD CURRENT
MAX531-14
REFERENCE OUTPUT (V)
0.51.52.53.54.5
MAX531/MAX538/MAX539
+5V, Low-Power, Voltage-Output
Serial 12-Bit DACs
____________________Pin Description_______________Detailed Description
General DAC DiscussionThe MAX531/MAX538/MAX539 use an “inverted” R-2R
ladder network with a single-supply CMOS op amp to con-
vert 12-bit digital data to analog voltage levels (see
Functional Diagram). The term “inverted” describes the
ladder network because the REFIN pin in current-output
DACs is the summing junction, or virtual ground, of an op
amp. However, such use would result in the output voltage
being the inverse of the reference voltage. The
MAX531/MAX538/MAX539’s topology makes the output
the same polarity as the reference input.
An internal reset circuit forces the DAC register to reset to
000 hex on power-up. Additionally, a clear CLRpin, when
held low, sets the DAC register to 000 hex. CLRoperates
asynchronously and independently from the chip-select
(CS)pin.
Buffer AmplifierThe output buffer is a unity-gain stable, rail-to-rail output,
BiCMOS op amp. Input offset voltage and CMRR are
trimmed to achieve better than 12-bit performance.
Settling time is 25µs to 0.01% of final value. The settling
time is considerably longer when the DAC code is initially
set to 000 hex, because at this code the op amp is com-
pletely debiased. Start from code 001 hex if necessary.
The output is short-circuit protected and can drive a 2kΩ
load with more than 100pF load capacitance.
Figure 1. Timing Diagram
