MAX530BCNG ,+5V, Low-Power, Parallel-Input, Voltage-Output, 12-Bit DACFeatures' Buffered Voltage OutputThe MAX530 is a low-power, 12-bit, voltage-output digi-tal-to-anal ..
MAX530BCNG+ ,+5V, Low-Power, Parallel-Input, Voltage-Output, 12-Bit DACApplications /MAX530ACNG 0°C to +70°C 24 Narrow Plastic DIP ±2Battery-Powered Data-Conversion Produ ..
MAX530BCWG ,+5V, Low-Power, Parallel-Input, Voltage-Output, 12-Bit DACELECTRICAL CHARACTERISTICS—Single +5V Supply(V = 5V ±10%, V = 0V, AGND = DGND = REFGND = 0V, REFIN ..
MAX530BEAG ,+5V, Low-Power, Parallel-Input, Voltage-Output, 12-Bit DACfeatures but with a serial data interface, referto the MAX531/MAX538/MAX539 data sheet.ERRORPART TE ..
MAX530BENG ,+5V, Low-Power, Parallel-Input, Voltage-Output, 12-Bit DACApplications /MAX530ACNG 0°C to +70°C 24 Narrow Plastic DIP ±2Battery-Powered Data-Conversion Produ ..
MAX530BENG+ ,+5V, Low-Power, Parallel-Input, Voltage-Output, 12-Bit DACapplications. In40µA Shutdown-Mode Currentaddition, the SSOP (Shrink-Small-Outline-Package) mea-sur ..
MAX975ESA+T ,Single/Dual, +3V/+5V Dual-Speed Comparators with Auto-StandbyELECTRICAL CHARACTERISTICS(V = +2.7V to +5.25V, specifications are for high-speed mode, T = -40°C t ..
MAX975EUA ,Single/Dual / +3V/+5V Dual-Speed Comparators with Auto-Standbyapplications. The operatingHigh Speed with Auto-Standbymodes are as follows: high speed, high speed ..
MAX9761ETI ,Stereo 3W Audio Power Amplifiers with Headphone Drive and Input Muxfeatures include low♦ Low-Power Shutdown Mode: 10µA4mV V (minimizes DC current drain through theOS♦ ..
MAX9766ETJ+T ,750mW Audio Amplifiers with Headphone Amp, Microphone Preamp, and Input Muxapplications that do not require♦ Headphone Sense Inputa headphone amp and includes a stereo BTL sp ..
MAX9768ETG+ ,10W Mono Class D Speaker Amplifier with Volume ControlBlock Diagram3.3V 4.5V TO 14VMAX9768 EMI WITH FERRITE BEAD FILTERS(V = 12V, 1m CABLE, 8Ω LOAD)DD40S ..
MAX9768ETG+T ,10W Mono Class D Speaker Amplifier with Volume ControlELECTRICAL CHARACTERISTICS(V = 12V, V = 3.3V, V = V = 0, V = V , V = 0; Max volume setting; speaker ..
MAX530ACAG-MAX530ACNG-MAX530AEAG-MAX530AEWG-MAX530BCAG-MAX530BCNG-MAX530BCWG-MAX530BEAG-MAX530BENG-MAX530BENG+-MAX530BEWG
+5V, Low-Power, Parallel-Input, Voltage-Output, 12-Bit DAC
_______________General DescriptionThe MAX530 is a low-power, 12-bit, voltage-output digi-
tal-to-analog converter (DAC) that uses single +5V or
dual ±5V supplies. This device has an on-chip voltage
reference plus an output buffer amplifier. Operating cur-
rent is only 250µA from a single +5V supply, making it
ideal for portable and battery-powered applications. In
addition, the SSOP (Shrink-Small-Outline-Package) mea-
sures only 0.1 square inches, using less board area than
an 8-pin DIP. 12-bit resolution is achieved through laser
trimming of the DAC, op amp, and reference. No further
adjustments are necessary.
Internal gain-setting resistors can be used to define a
DAC output voltage range of 0V to +2.048V, 0V to
+4.096V, or ±2.048V. Four-quadrant multiplication is pos-
sible without the use of external resistors or op amps. The
parallel logic inputs are double buffered and are compati-
ble with 4-bit, 8-bit, and 16-bit microprocessors. For DACs
with similar features but with a serial data interface, refer
to the MAX531/MAX538/MAX539 data sheet.
________________________ApplicationsBattery-Powered Data-Conversion Products
Minimum Component-Count Analog Systems
Digital Offset/Gain Adjustment
Industrial Process Control
Arbitrary Function Generators
Automatic Test Equipment
Microprocessor-Controlled Calibration
____________________________FeaturesBuffered Voltage OutputInternal 2.048V Voltage ReferenceOperates from Single +5V or Dual ±5V SuppliesLow Power Consumption:
250µA Operating Current
40µA Shutdown-Mode CurrentSSOP Package Saves SpaceRelative Accuracy: ±1/2LSB Max Over
TemperatureGuaranteed Monotonic Over Temperature4-Quadrant Multiplication with No External
ComponentsPower-On ResetDouble-Buffered Parallel Logic Inputs
______________Ordering Information
Ordering Information continued on last page.* Dice are tested at TA= +25°C, DC parameters only.
MAX530
+5V, Low-Power, Parallel-Input,
Voltage-Output, 12-Bit DAC
________________________________________________________________Maxim Integrated Products1
__________________Pin Configuration
________________Functional Diagram
Call toll free 1-800-998-8800 for free samples or literature.19-0168; Rev 3; 7/95
MAX530
+5V, Low-Power, Parallel-Input,
Voltage-Output, 12-Bit DAC_______________________________________________________________________________________
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
REFGND to AGND........................................-0.3V, (VDD+ 0.3V)
Digital Input Voltage to DGND ...................-0.3V, (VDD+ 0.3V)
REFIN.................................................(VSS- 0.3V), (VDD+ 0.3V)
REFOUT.............................................(VSS- 0.3V), (VDD+ 0.3V)
REFOUT to REFGND...................................-0.3V, (VDD+ 0.3V)
RFB ...................................................(VSS- 0.3V), (VDD+ 0.3V)
ROFS .................................................(VSS- 0.3V), (VDD+ 0.3V)
VOUT to AGND (Note 1) ..............................................VSS,VDD
Continuous Current, Any Input ........................................±20mA
Continuous Power Dissipation (TA= +70°C)
Narrow Plastic DIP (derate 13.33mW/°C above +70°C)......1067mW
Wide SO (derate 11.76mW/°C above +70°C)..........941mW
SSOP (derate 8.00mW/°C above +70°C)..................640mW
Operating Temperature Ranges:
MAX530_C_ _...................................................0°C to +70°C
MAX530_E_ _................................................-40°C to +85°C
Storage Temperature Range.............................-65°C to +165°C
Lead Temperature (soldering, 10sec ) ..........................+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.
Note 1:The output may be shorted to VDD, VSS, DGND, or AGND if the continuous package power dissipation and current ratings
are not exceeded. Typical short-circuit currents are 20mA.
ELECTRICAL CHARACTERISTICS—Single +5V Supply(VDD= 5V ±10%, VSS= 0V, AGND = DGND = REFGND = 0V, REFIN = 2.048V (external), RFB = ROFS = VOUT, CREFOUT= 33µF,= 10kΩ, CL= 100pF, TA= TMINto TMAX, unless otherwise noted.)
MAX530
+5V, Low-Power, Parallel-Input,
Voltage-Output, 12-Bit DAC
_______________________________________________________________________________________3
ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)(VDD= 5V ±10%, VSS= 0V, AGND = DGND = REFGND = 0V, REFIN = 2.048V (external), RFB = ROFS = VOUT, CREFOUT= 33µF,= 10kΩ, CL= 100pF, TA= TMINto TMAX, unless otherwise noted.)
ELECTRICAL CHARACTERISTICS—Dual ±5V Supplies(VDD= 5V ±10%, VSS= -5V ±10%, AGND = DGND = REFGND = 0V, REFIN = 2.048V (external), RFB = ROFS = VOUT,
CREFOUT= 33µF, RL= 10kΩ, CL= 100pF, TA= TMINto TMAX, unless otherwise noted.)
MAX530
+5V, Low-Power, Parallel-Input,
Voltage-Output, 12-Bit DAC_______________________________________________________________________________________
MAX530
+5V, Low-Power, Parallel-Input,
Voltage-Output, 12-Bit DAC
_______________________________________________________________________________________5INTEGRAL NONLINEARITY vs.
DIGITAL INPUT CODE (0–11)
MAX530-1
DIGITAL INPUT CODE (DECIMAL)
INTEGRAL NONLINEARITY (LSB)
-110101k100k
ANALOG FEEDTHROUGH vs.
FREQUENCYMAX531-5
FREQUENCY (Hz)
ANALOG FEEDTHROUGH (dB)
10010k1M
REFERENCE VOLTAGE vs.
TEMPERATURE
MAX531-6
TEMPERATURE (°C)
REFERENCE VOLTAGE (V)
__________________________________________Typical Operating Characteristics
(TA = +25°C, single supply (+5V), unity gain, code = all 1s, unless otherwise noted).0.8
OUTPUT SINK CAPABILITY vs.
OUTPUT PULL-DOWN VOLTAGEMAX531-3
OUTPUT PULL-DOWN VOLTAGE (V)
OUTPUT SINK CAPABILITY (mA)
OUTPUT SOURCE CAPABILITY vs.
OUTPUT PULL-UP VOLTAGE
MAX531-4
OUTPUT PULL-UP VOLTAGE (V)
OUTPUT SOURCE CAPABILITY (mA)
Note 2:In single supply, INL and GE are calculated from code 11 to code 4095.
Note 3:Zero Code, Bipolar and Gain Error PSRR are input referred specifications. In Unity Gain, the specification is 500µV.
In Gain = 2 and Bipolar modes, the specification is 1mV.
Note 4:Guaranteed by design.
Note 5:REFIN = 1kHz, 2.0Vp-p.
Note 6:For specified performance, VDD= 5V ±10% is guaranteed by PSRR tests.
Note 7:For specified performance, VSS= -5V ±10% is guaranteed by PSRR tests.
Note 8:Tested at IOUT= 100µA. The reference can typically source up to 5mA (see Typical Operating Characteristics).
ELECTRICAL CHARACTERISTICS—Dual ±5V Supplies (continued)(VDD= 5V ±10%, VSS= -5V ±10%, AGND = DGND = REFGND = 0V, REFIN = 2.048V (external), RFB = ROFS = VOUT,
CREFOUT= 33µF, RL= 10kΩ, CL= 100pF, TA= TMINto TMAX, unless otherwise noted.)
MAX530
+5V, Low-Power, Parallel-Input,
Voltage-Output, 12-Bit DAC_______________________________________________________________________________________
____________________________Typical Operating Characteristics (continued)(TA = +25°C, single supply (+5V), unity gain, code = all 1s, unless otherwise noted).500
SUPPLY CURRENT vs. REFINREFIN (mV)
SUPPLY CURRENT (
MAX530-14
REFERENCE OUTPUT VOLTAGE
vs. REFERENCE LOAD CURRENT
MAX530-15
REFERENCE LOAD CURRENT (mA)
REFERENCE OUTPUT (V)
A: DIGITAL INPUTS RISING EDGE,
B: VOUT, NO LOAD, 1V/div
DUAL SUPPLY (±5V)
LDAC = LOW
BIPOLAR CONFIGURATION
VREFIN = 2V
SETTLING TIME (RISING)5μs/div
GAIN AND PHASE vs.
FREQUENCY
FREQUENCY (kHz)
GAIN (dB)100
PHASE SHIFT (Degrees)
MAX530-10
A: DIGITAL INPUTS FALLING EDGE, 5V/div
B: VOUT, NO LOAD, 1V/div
DUAL SUPPLY (±5V)
LDAC = LOW
BIPOLAR CONFIGURATION
VREFIN = 2V
SETTLING TIME (FALLING) 5µs/div
SUPPLY CURRENT vs. TEMPERATURE
TEMPERATURE (°C)
SUPPLY CURRENT (100
MAX530-7
-14100100k
GAIN vs. FREQUENCYMAX531-8
FREQUENCY (Hz)
GAIN (dB)
-1010k1k100k
AMPLIFIER SIGNAL-TO-NOISE RATIOMAX531-9
FREQUENCY (Hz)
SIGNAL-TO-NOISE RATIO (dB)20
10k100
MAX530
+5V, Low-Power, Parallel-Input,
Voltage-Output, 12-Bit DAC
_______________________________________________________________________________________7
______________________________________________________________Pin Description* This applies to 4 + 4 + 4 input loading mode. See Table 2 for 8 + 4 input loading mode.
MAX530
________________Detailed DescriptionThe MAX530 consists of a parallel-input logic interface, a
12-bit R-2R ladder, a reference, and an op amp. The
Functional Diagramshows the control lines and signal
flow through the input data latch to the DAC latch, as well
as the 2.048V reference and output op amp. Total supply
current is typically 250µA with a single +5V supply. This
circuit is ideal for battery-powered, microprocessor-con-
trolled applications where high accuracy, no adjustments,
and minimum component count are key requirements.
R-2R LadderThe MAX530 uses an “inverted” R-2R ladder network with
a BiCMOS op amp to convert 12-bit digital data to analog
voltage levels. Figure 1 shows a simplified diagram of the
R-2R DAC and op amp. Unlike a standard DAC, the
MAX530 uses an “inverted” ladder network. Normally, the
REFIN pin is the current output of a standard DAC and
would be connected to the summing junction, or virtual
ground, of an op amp. In this standard DAC configura-
+5V, Low-Power, Parallel-Input,
Voltage-Output, 12-Bit DAC_______________________________________________________________________________________Figure 1. Simplified MAX530 DAC Circuit
tion, however, the output voltage would be the inverse of
the reference voltage. The MAX530’s topology makes the
ladder output voltage the same polarity as the reference
input, which makes the device suitable for single-supply
operation. The BiCMOS op amp is then used to buffer,
invert, or amplify the ladder signal.
Ladder resistors are nominally 80kΩto conserve power
and are laser trimmed for gain and linearity. The input
impedance at REFIN is code dependent. When the DAC
register is all 0s, all rungs of the ladder are grounded
and REFIN is open or no load. Maximum loading (mini-
mum REFIN impedance) occurs at code 010101... or
555hex. Minimum reference input impedance at this
code is guaranteed to be not less than 40kΩ.
The REFIN and REFOUT pins allow the user to choose
between driving the R-2R ladder with the on-chip refer-
ence or an external reference. REFIN may be below ana-
log ground when using dual supplies. See the External
Reference andFour-Quadrant Multiplicationsections for
more information.
Internal ReferenceThe on-chip reference is laser trimmed to generate
2.048V at REFOUT. The output stage can source and
sink current so REFOUT can settle to the correct volt-
age quickly in response to code-dependent loading
changes. Typically source current is 5mA and sink cur-
rent is 100µA.
REFOUT connects the internal reference to the R-2R
DAC ladder at REFIN. The R-2R ladder draws 50µA
maximum load current. If any other connection is made
to REFOUT, ensure that the total load current is less
than 100µA to avoid gain errors.
A separate REFGND pin is provided to isolate refer-
ence currents from other analog and digital ground
currents. To achieve specified noise performance, con-
nect a 33µF capacitor from REFOUT to REFGND (see
Figure 2). Using smaller capacitance values increases
noise, and values less than 3.3µF may compromise the
reference’s stability. For applications requiring the low-
est noise, insert a buffered RC filter between REFOUT
and REFIN. When using the internal reference,
REFGND must be connected to AGND. In applications
not requiring the internal reference, connect REFGND
to VDD, which shuts down the reference and saves typ-
ically 100µA of VDDsupply current.
