MAX531BCSD+T ,+5V, Low-Power, Voltage-Output, Serial 12-Bit DACsMAX531/MAX538/MAX53919-0172; Rev 6; 2/97+5V, Low -Pow er, Voltage-Output,Serial 12-Bit DACs________ ..
MAX531BEPD ,+5V, Low-Power, Voltage-Output, Serial 12-Bit DACsFeaturesThe MAX531/MAX538/MAX539 are low-power, voltage-' Operate from Single +5V Supplyoutput, 12- ..
MAX531BESD ,+5V, Low-Power, Voltage-Output, Serial 12-Bit DACsApplications______________Ordering InformationBattery-Powered Test InstrumentsERRORPART TEMP. RANGE ..
MAX5322EAI ,+/-10 V, 12-bit, serial, voltage-output DACELECTRICAL CHARACTERISTICS (DUAL SUPPLY)(V = +15V ±5%, V = -15V ±5%, V = +5V ±10%, AGND = DGND = SG ..
MAX532ACPE ,Dual, Serial-Input, Voltage-Output, 12-Bit MDACapplications.' Operates from ±12V to ±15V SuppliesThe MAX532 is specified with ±12V to ±15V power s ..
MAX532ACPE ,Dual, Serial-Input, Voltage-Output, 12-Bit MDACApplications______________Ordering InformationAutomatic Test EquipmentArbitrary Waveform Generators ..
MAX9770ETI+ ,1.2W, Low-EMI, Filterless, Mono Class D Amplifier with Stereo DirectDrive Headphone AmplifiersELECTRICAL CHARACTERISTICS(V = PV = CPV = 3.3V, GND = PGND = CPGND = 0V, SHDN = 3.3V, C1 = C2 = 1µF ..
MAX9770ETI+T ,1.2W, Low-EMI, Filterless, Mono Class D Amplifier with Stereo DirectDrive Headphone Amplifiersfeatures THD+N as low as 0.025%, high 70dB PackagesPSRR, and SNR in excess of 90dB.The headphone am ..
MAX9776ETJ+ ,2 x 1.5W, Stereo Class D Audio Subsystem with DirectDrive Headphone AmplifierELECTRICAL CHARACTERISTICS2(V = PV = CPV = 3.3V, V = V = V = 0V, SHDN = V , I C settings (INA gain ..
MAX977EEE ,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 ..
MAX977ESD ,Single/Dual / +3V/+5V Dual-Speed Comparators with Auto-Standbyfeatures independently adjustable timeout periods foreach comparator using separate capacitors.¤ µM ..
MAX9788ETI+ ,14VP-P, Class G Ceramic Speaker Driverfeatures a mono Class G power amplifier♦ Integrated Charge-Pump Power Supply—Nowith an integrated i ..
MAX531ACSD+T-MAX531BCPD+-MAX531BCSD+T-MAX538ACPA+-MAX538BCPA+-MAX538BCSA+-MAX538BCSA+T-MAX539ACPA+-MAX539ACSA+-MAX539BCPA+-MAX539BEPA+
+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 InformationV, Low-Power, Voltage-Outputerial 12-Bit DACVDD
VOUT
REFIN
AGNDDOUT
SCLK
DIN
DIP/SOTOP VIEW
MAX538
MAX539
_________________Pin Configurations
________________Functional Diagram19-0172; Rev 6; 2/97
PARTTEMP. RANGEPIN-PACKAGE
MAX531ACPD0°C to +70°C14 Plastic DIP
MAX531BCPD0°C to +70°C14 Plastic DIP
MAX531ACSD0°C to +70°C14 SO
MAX531BCSD0°C to +70°C14 SO
ERROR
(LSB)±1/2
±1/2
DAC
DAC REGISTER
(12 BITS)
SHIFT REGISTER
(12 BITS)
BITS
CONTROL
LOGIC
POWER-UP
RESET
2.048V
REFERENCE
(MAX531 ONLY)
AGND
SCLK
DIN
(MAX531 ONLY)
REFOUTREFIN
(MAX531 ONLY)
BIPOFF
RFB
(MAX531
ONLY)
VOUT
VDD
DGND
(MAX531
ONLY)
VSS
(MAX531
ONLY)
DOUT(LSB)(MSB)
CLR
(MAX531
ONLY)
MAX531
MAX538
MAX539
MAX531BC/D0°C to +70°CDice*±1
Ordering Information continued at end of data sheet.*Dice are specified at TA= +25°C only.
Pin Configurations continued at end of data sheet.
V, Low-Power, Voltage-Outputrial 12-Bit DACsABSOLUTE 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.
PARAMETERSYMBOLMINTYPMAXUNITSUnipolar Offset Error VOS08LSB
Differential NonlinearityDNL±1LSB
Relative Accuracy (Note 2)INLLSB±1
Unipolar Offset TempcoTCVOS3ppm/°C
Gain Error (Note 2)GE±1LSB
ResolutionN12Bits
±0.5
Gain-Error Tempco1ppm/°C
Power-Supply Rejection Ratio
(Note 3)PSRR0.41LSB/VVDD- 2Output Voltage Range0VDD- 0.4V
Output Load Regulation1LSB
Short-Circuit CurrentISC12mA
Voltage Range0VDD- 2V
Input Resistance40kΩ
Input Capacitance1050pF
AC Feedthrough-80dB
CONDITIONSMAX53_ _C/E
Guaranteed monotonic
4.5V ≤VDD≤5.5V
MAX53_ _C/E
MAX531 (G = +1), MAX538
MAX531 (G = +2), MAX539
VOUT = 2V, RL= 2kΩ
Code dependent, minimum at code 555 hex
Code dependent (Note 4)
REFIN = 1kHz, 2Vp-p
Note 1:The output may be shorted to VDD, VSS,or AGND if the package power dissipation limit is not exceeded.
MAX53_AC/E
MAX53_BC/E
REFERENCE INPUT (REFIN)
VOLTAGE OUTPUT (VOUT)
STATIC PERFORMANCE
V, Low-Power, Voltage-Output,erial 12-Bit DACELECTRICAL 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.)
PARAMETERInput Current
SYMBOLMINTYPMAXIIN±1
UNITSNoise Voltageen
Input CapacitanceCIN
μVp-p
Power-Supply Rejection Ratio
PSRR300μV/V
ResistanceRREFOUT0.52
Temperature CoefficientTCREFOUT3050ppm/°C
Minimum Required External
CapacitorCMIN3.3μF
Output High
Input High
VOH
VIH2.4
VDD - 1
Input Low
VIL0.8V
Output LowVOL0.4V
Voltage-Output Slew RateSR0.150.25V/μs
Voltage-Output Settling Time25μs
Digital Feedthrough
2.0242.0482.072nV-s
Signal-to-Noise plus DistortionSINAD68dB
CONDITIONS
VIN= 0V or VDD
0.1Hz to 10kHz
4.5V ≤VDD≤5.5V
(Note 5)
MAX531AC/AE/AM/BM
ISOURCE= 2mA
ISINK= 2mA= +25°C
To ±1/2LSB, VOUT = 2V= VDD, DIN = 100kHz
REFIN = 1kHz, 2Vp-p (G = +1 or +2),
code = FFF hex
Power-Supply CurrentIDDAll inputs = 0V or VDD,
output = no load140300μASetup TimetCSS20ns
SCLK Fall to CSFall Hold TimetCSH015ns
SCLK Fall to CSRise Hold TimetCSH10ns
SCLK High WidthtCH35ns
SCLK Low WidthtCL35ns
DIN Setup TimetDS45ns
DIN Hold TimetDH0ns
DOUT Valid Propagation DelaytDOCL= 50pF80nsHigh Pulse WidthtCSW20ns
CLRPulse WidthtCLR25ns
MAX531BC/BE
MAX531
MAX538, MAX539
2.0172.079Reference Output VoltageV
VDD= 5.0V= +25°C
MAX531BC
MAX531BE
Positive Supply VoltageVDD4.55.5V
REFERENCE OUTPUT (REFOUT—MAX531 only)
DIGITAL INPUTS (DIN, SCLK, CS, CLR)
DIGITAL OUTPUT (DOUT)
DYNAMIC PERFORMANCE
POWER SUPPLY
SWITCHING CHARACTERISTICS
V, Low-Power, Voltage-Output,rial 12-Bit DACsPARAMETERSYMBOLMINTYPMAXUNITSBipolar Offset ErrorVOS±8
Gain Error (Unipolar or Bipolar)GEU
LSB
Differential Nonlinearity
DNL±1LSB
Relative AccuracyINL
LSB
LSB±1
Gain-Error Tempco
Bipolar Offset TempcoTCVOS3ppm/°Cppm/°C
Power-Supply Rejection Ratio
(Note 3)PSRR0.41LSB/V
Voltage Range
Resolution
VSS+ 2VDD- 212
Input Resistance
BitskΩ
Input Capacitance
±0.550pF
AC Feedthrough-80dB
CONDITIONSBIPOFF = REFIN, MAX531_C/E
MAX531_C/E
Guaranteed monotonic
Tested at VDD= 5V,
VSS= -5V
BIPOFF = REFIN
4.5V ≤VDD≤5.5V, -5.5V ≤VSS≤-4.5V
Code dependent, minimum at code 555 hex
Code dependent (Note 4)
REFIN = 1kHz, 2.0Vp-p
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.)
MAX531AC/E
MAX531BC/E
MAX531AC/AE/AM/BM3050Temperature CoefficientTCREFOUTMAX531BC/BE30ppm/°C
ResistanceRREFOUT(Note 5)0.52Ω
Power-Supply Rejection RatioPSRR4.5V ≤VDD≤5.5V300μV/V0.1Hz to 10kHz400μVp-pNoise Voltage
Minimum Required External
CapacitorCMIN3.3μF
Input HighVIH2.4V
Input LowVIL0.8V
Input CurrentIINVIN= 0V or VDD±1μA
Input CapacitanceCIN8pF
Output HighVOHISOURCE= 2mAVDD- 1V
Output LowVOLISINK= 2mA0.4V
2.0172.079VDD= 5.0V
2.0132.083Reference Output Voltage= +25°C
MAX531BC
MAX531BE
REFERENCE INPUT (REFIN)
REFERENCE OUTPUT (REFOUT—MAX531 only)
DIGITAL INPUTS (DIN, SCLK, CS)
DIGITAL OUTPUT (DOUT)
V, Low-Power, Voltage-Outputerial 12-Bit DACNote 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.)
PARAMETERSYMBOLMINTYPMAXUNITSVoltage-Output Slew RateSR
VDD
V/μs
ISC12
Positive Supply VoltageLSB
Negative Supply Voltage
Voltage-Output Settling Time25μs
Signal-to-Noise plus DistortionnV-s
VSS-5.50V
Short-Circuit Current
Digital Feedthrough
SINAD68
Output Load Regulation
VSS + 2VDD - 2Output Voltage RangeVSS + 0.4VDD - 0.4V
CONDITIONSVOUT = 2V, RL= 2kΩ
To ±1/2LSB, VOUT = 2V
Step 000 hex to FFF hex
REFIN = 1kHz, 2Vp-p, (G = +1)
REFIN = 1kHz, 2Vp-p, (G = +2)
MAX531 (G = +1)
MAX531 (G = +2)Setup TimetCSS20ns
SCLK Fall to CSFall Hold TimetCSH015ns
SCLK Fall to CSRise Hold TimetCSH10ns
SCLK High WidthtCH35ns
SCLK Low WidthtCL35ns
DIN Setup TimetDS45ns
DIN Hold TimetDH0ns
DOUT Valid Propagation DelaytDOCL= 50pF80nsHigh Pulse WidthtCSW20ns
CLRPulse WidthtCLR25nsRise to SCLK Rise Setup TimetCS150ns
Positive Supply CurrentIDD260400μAAll inputs = 0V or VDD, no load
Negative Supply CurrentISS-120-200μAAll inputs = 0V or VDD, no load
VOLTAGE OUTPUT (VOUT)
DYNAMIC PERFORMANCE
POWER SUPPLY
SWITCHING CHARACTERISTICS
V, Low-Power, Voltage-Output,rial 12-Bit DACsSUPPLY CURRENT vs.
TEMPERATURE
AX531-7
TEMPERATURE (°C)
(m
MAX538/MAX539
MAX531
-14100100k
MAX531
GAIN vs. FREQUENCYMAX531-8
FREQUENCY (Hz)
(d
-1010k
REFIN = 4Vp-p 1k100k
MAX531
AMPLIFIER SIGNAL-TO-NOISE RATIOMAX531-9
FREQUENCY (Hz)
(d
10k100
REFIN = 4Vp-p
MAX531
REFERENCE VOLTAGE vs.
TEMPERATURE
AX531-6
TEMPERATURE (°C)
(V
-110101k100k
ANALOG FEEDTHROUGH vs.
FREQUENCYAX531-5
FREQUENCY (Hz)
(d
10010k1M
CODE = 000 hex
VDD-5VDD-1
OUTPUT SOURCE CAPABILITY vs.
OUTPUT PULL-UP VOLTAGEMAX531-4
OUTPUT PULL-UP VOLTAGE (V)
(m
VDD-2
VDD-4VDD-3
VDD-0
INTEGRAL NONLINEARITY vs. DIGITAL
INPUT CODE (FIRST 12 CODES)
AX531-1
DIGITAL INPUT CODE (DECIMAL)
(L
DUAL SUPPLIES
SINGLE SUPPLY
INTEGRAL NONLINEARITY vs. DIGITAL
INPUT CODE (ALL CODES)5121024153620482560307235844095
(L
DIGITAL INPUT CODE (DECIMAL)0.8
OUTPUT SINK CAPABILITY vs.
OUTPUT PULL-DOWN VOLTAGEAX531-3
OUTPUT PULL-DOWN VOLTAGE (V)
__________________________________________Typical Operating Characteristics
(VDD= +5V, VREFIN= 2.048V, TA= +25°C, unless otherwise noted.)
V, Low-Power, Voltage-Output,erial 12-Bit DAC____________________________Typical Operating Characteristics (continued)(VDD= +5V, VREFIN= 2.048V, TA= +25°C, unless otherwise noted.)
MAX531
GAIN AND PHASE vs. FREQUENCY
AX531-10
FREQUENCY (kHz)
(d100
GAIN
PHASE
RFB CONNECTED TO AGND (G=2)
RFB CONNECTED TO VOUT (G=1)
(d
MAX531 REFERENCE OUTPUT VOLTAGE
vs. REFERENCE LOAD CURRENT
MAX531-14
REFERENCE LOAD CURRENT (mA)
(V
VDD = ±5V, VREFIN = 2V, BIPOLAR CONFIGURATION
A: CS RISING EDGE, 5V/div
B: VOUT, NO LOAD, 1V/div
NEGATIVE SETTLING TIME (MAX531)s/div
DIGITAL FEEDTHROUGHCS = HIGH
A: DIN = 4Vp-p, 100kHz
B: VOUT, 10mV/divs/div
POSITIVE SETTLING TIME (MAX531)VDD = ±5V, VREFIN = 2V, BIPOLAR CONFIGURATION
A: CS RISING EDGE, 5V/div
B: VOUT, NO LOAD, 1V/divs/div
V, Low-Power, Voltage-Outputrial 12-Bit DACsFUNCTIONBIPOFFBipolar Offset/Gain
ResistorDINSerial Data InputCLRClear. Asynchronously sets
DAC register to 000 hex.
PINSCLKSerial Clock InputCSChip Select, active lowDOUTSerial Data Output for
daisy-chainingDGNDDigital GroundAGNDAnalog GroundREFINReference InputREFOUTReference Output,
2.048V—VSSNegative Power Supply7VOUTDAC Output8VDDPositive Power Supply—RFBFeedback Resistor
MAX531MAX538
MAX539
NAME
____________________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.
tCSH0
tCSStCHtCLtCSH1
tCSW
tDS
tDH
tDO
SCLK
DIN
DOUT
tCS1
Figure 1. Timing Diagram
