MAX5304CUA+T ,10-Bit Voltage-Output DAC in 8-Pin µMAXApplications_________________Ordering InformationDigital Offset and Gain AdjustmentPART TEMP. RANGE ..
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MAX5307EUE ,PLASTIC ENCAPSULATED DEVICES MAX5307EUE Rev. A RELIABILITY REPORT FOR MAX5307EUE PLASTIC ENCA ..
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MAX5309EUE ,PLASTIC ENCAPSULATED DEVICES MAX5309EUE Rev. A RELIABILITY REPORT FOR MAX5309EUE PLASTIC ENCA ..
MAX9750CETI+T ,2.6W Stereo Audio Power Amplifiers and DirectDrive® Headphone AmplifiersFeaturesThe MAX9750/MAX9751/MAX9755 combine a stereo,♦ No DC-Blocking Capacitors Required—Provides® ..
MAX9752BETI+T ,2.2W, Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone AmplifiersBlock DiagramsMAX9752 MAX9753 MAX9754SCLASS CLASS CLASSD D DSAMP AMP AMPVOLINPUT HPS HPS HPSMUX SEL ..
MAX9755ETI ,2.6W Stereo Audio Power Amplifiers and DirectDrive Headphone AmplifiersBlock DiagramsPIN- M A XIMU M PART TEMP RANGEPACKAGE G A I N ( d B ) †MAX9750AETI* -40°C to +85°C ..
MAX9755ETI+ ,2.6W Stereo Audio Power Amplifiers and DirectDrive® Headphone AmplifiersELECTRICAL CHARACTERISTICS(V = PV = CPV = HPV = 5V, V = V = V = 0V, SHDN = V , C = 1µF, C1 = C2 = 1 ..
MAX9755ETI+ ,2.6W Stereo Audio Power Amplifiers and DirectDrive® Headphone Amplifiersfeatures an analog volume control, and a♦ High 90dB PSRRBEEP input. The MAX9751
MAX9755ETI+T ,2.6W Stereo Audio Power Amplifiers and DirectDrive® Headphone Amplifiersfeatures a 2:1 input multiplexer,allowing multiple audio sources to be selected. All devices♦ Low-P ..
MAX5304CUA+T
10-Bit Voltage-Output DAC in 8-Pin µMAX
General DescriptionThe MAX5304 combines a low-power, voltage-output,
10-bit digital-to-analog converter (DAC) and a precision
output amplifier in an 8-pin µMAX package. It operates
from a single +5V supply, drawing less than 280µA of
supply current.
The output amplifier’s inverting input is available to the
user, allowing specific gain configurations, remote
sensing, and high output-current capability. This makes
the MAX5304 ideal for a wide range of applications,
including industrial process control. Other features
include a software shutdown and power-on reset.
The serial interface is SPI™/QSPI™/MICROWIRE™
compatible. The DAC has a double-buffered input,
organized as an input register followed by a DAC regis-
ter. A 16-bit serial word loads data into the input regis-
ter. The DAC register can be updated independently or
simultaneously with the input register. All logic inputs
are TTL/CMOS-logic compatible and buffered with
Schmitt triggers to allow direct interfacing to optocou-
plers.
ApplicationsDigital Offset and Gain Adjustment
Industrial Process Control
Microprocessor-Controlled Systems
Portable Test Instruments
Remote Industrial Control
Features10-Bit DAC with Configurable Output Amplifier+5V Single-Supply Operation Low Supply Current
0.28mA Normal Operation
2µA Shutdown ModeAvailable in 8-Pin µMAXPower-On Reset Clears DAC Output to ZeroSPI/QSPI/MICROWIRE CompatibleSchmitt-Trigger Digital Inputs for Direct
Optocoupler Interface
MAX5304
10-Bit Voltage-Output DAC
in 8-Pin µMAXMAX5304
OUT
DIN
SCLK
DAC
REF
DAC
REGISTER
INPUT
REGISTER
CONTROL
VDDGND
16-BIT
SHIFT
REGISTER
Functional DiagramREFDINSCLK
VDD
GNDCS
OUT
MAX5304
μMAX
TOP VIEW
Pin Configuration19-1562; Rev 0; 10/99
PARTMAX5304CUA
MAX5304EUA-40°C to +85°C
0°C to +70°C
TEMP. RANGEPIN-PACKAGE8 µMAX
8 µMAX
_________________Ordering InformationSPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
MAX5304
10-Bit Voltage-Output DAC
in 8-Pin µMAX
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS(Circuit of Figure 8, VDD= +5V ±10%, VREF= +2.5V, RL= 5kΩ, CL= 100pF, TA= TMINto TMAX, unless otherwise noted. Typical values
are at TA= +25°C. Output buffer connected in unity-gain configuration.)
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.
VDD to GND...............................................................-0.3V to +6V
REF, OUT, FB to GND.................................-0.3V to (VDD+ 0.3V)
Digital Inputs to GND................................................-0.3V to +6V
Continuous Current into Any Pin.......................................±20mA
Continuous Power Dissipation (TA= +70°C)
8-Pin µMAX (derate 4.10mW/°C above+70°C)..........330mW
Operating Temperature Ranges
MAX5304CUA...................................................0°C to +70°C
MAX5304EUA................................................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
Code dependent, minimum at code 1550 hex
4.5V ≤VDD≤5.5V
Guaranteed monotonic
CONDITIONS1830RREFReference Input Resistance0VDD - 1.4VREFReference Input Range
µV/VPSRRPower-Supply Rejection Ratio800
Bits10NResolution
ppm/°C1Gain-Error Tempco
LSBGEGain Error (Note 1)-0.3±2
ppm/°C6TCVOSOffset-Error Tempco
LSBDNLDifferential Nonlinearity±1.0
±0.3±8mVVOSOffset Error
UNITSMINTYPMAXSYMBOLPARAMETERLSB±4INLIntegral Nonlinearity
(Note 1)
VREF= 0.67Vp-pkHz650Reference -3dB Bandwidth
Input code = all 0s, VREF= 3.6Vp-p at 1kHz
VREF= 1Vp-p at 25kHz, code = full scaledB77SINADSignal-to-Noise Plus
Distortion Ratio-84Reference Feedthrough2.4VIHInput High Voltage
VIN= 0 or VDD8CINInput Capacitance0.001±0.5IINInput Leakage Current0.8VILInput Low Voltage
STATIC PERFORMANCE—ANALOG SECTION
DIGITAL INPUTS
REFERENCE INPUT
MULTIPLYING-MODE PERFORMANCE
MAX5304
10-Bit Voltage-Output DAC
in 8-Pin µMAX
ELECTRICAL CHARACTERISTICS (continued)(Circuit of Figure 8, VDD= +5V ±10%, VREF= +2.5V, RL= 5kΩ, CL= 100pF, TA= TMINto TMAX, unless otherwise noted. Typical values
are at TA= +25°C. Output buffer connected in unity-gain configuration.)
(Note 3)= VDD, DIN = 100kHz
Rail-to-rail (Note 2)
To ±1/2LSB, VSTEP= 2.5V
CONDITIONS0.280.4IDDSupply Current4.55.5VDDSupply Voltage
nVs5Digital Feedthrough20Start-Up Time0.001±0.1Current into FB0 to VDDOutput Voltage Swing10Output Settling Time
V/µs0.6SRVoltage Output Slew Rate
UNITSMINTYPMAXSYMBOLPARAMETER(Note 3)µA420Supply Current in Shutdown0.001±0.5Reference Current in Shutdown40tCHSCLK Pulse Width High100tCPSCLK Clock Period40tCSSCSFall to SCLK Rise Setup Time40tDSDIN Setup Time0tCSHSCLK Rise to CSRise Hold Time40tCLSCLK Pulse Width Low40tCS1CSRise to SCLK Rise Hold Time100tCSWCSPulse Width High40tCS0SCLK Rise to CSFall Delay0tDHDIN Hold Time
Note 1:Guaranteed from code 3 to code 1023 in unity-gain configuration.
Note 2:Accuracy is better than 1LSB for VOUT= 8mV to (VDD- 100mV), guaranteed by a power-supply rejection test at the end
points.
Note 3:RL= ∞, digital inputs at GND or VDD.
DIGITAL INPUTSDYNAMIC PERFORMANCE
POWER SUPPLIES
TIMING CHARACTERISTICS(Figure 6)
MAX5304
10-Bit Voltage-Output DAC
in 8-Pin µMAX
__________________________________________Typical Operating Characteristics(VDD= +5V, RL= 5kΩ, CL= 100pF, TA = +25°C, unless otherwise noted.)
INL (LSB)
REFERENCE VOLTAGE (V)
MAX5304-01
INTEGRAL NONLINEARITY
vs. REFERENCE VOLTAGE
500k01M1.5M2M2.5M3M
MAX5304-02
RELATIVE OUTPUT (dB)
REFERENCE VOLTAGE INPUT
FREQUENCY RESPONSEFREQUENCY (Hz)
MAX5304-03
SUPPLY CURRENT (
SUPPLY CURRENT
vs. TEMPERATURETEMPERATURE (°C)
RL = ∞
MAX5304-04
POWER-DOWN SUPPLY CURRENT (
POWER-DOWN SUPPLY CURRENT
vs. TEMPERATURETEMPERATURE (°C)
OUTPUT FFT PLOT
MAX5304-07
FREQUENCY (kHz)
SIGNAL AMPLITUDE (dB)
VREF = +3.6Vp-p
CODE = FULL SCALE
fIN = 1kHz
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX5304-05
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX5304-06
FREQUENCY (kHz)
THD + NOISE (dB)
VREF = +2.5VDC + 1Vp-p SINE
CODE = FULL SCALE
0.1k1k10k1M100k
OUTPUT VOLTAGE
vs. LOADMAX5304-08
LOAD (Ω)
OUTPUT VOLTAGE (V)
REFERENCE FEEDTHROUGH
AT 1kHz
MAX5304-09a/09b
FREQUENCY (kHz)
SIGNAL AMPLITUDE (dB)
OUTPUT FEEDTHROUGH
REFERENCE INPUT SIGNAL
MAX5304
10-Bit Voltage-Output DAC
in 8-Pin µMAX2μs/div
OUT
AC-COUPLED
10mV/div
CODE = 512
DIGITAL FEEDTHROUGH (fSCLK = 100kHz)MAX5304-11a
SCLK
2V/div
CS = 5V
____________________________Typical Operating Characteristics (continued)(VDD= +5V, RL= 5kΩ, CL= 100pF, TA = +25°C, unless otherwise noted.)
10μs/div
MAJOR-CARRY TRANSITIONMAX5304-10a
OUT
AC-COUPLED
100mV/div
5V/div
10μs/div
DYNAMIC RESPONSEMAX5304-12a
OUT
1V/div
GND
GAIN = +2V/V, SWITCHING FROM CODE 0 TO 1005
MAX5304
10-Bit Voltage-Output DAC
in 8-Pin µMAX
_______________Detailed DescriptionThe MAX5304 contains a voltage-output digital-to-ana-
log converter (DAC) that is easily addressed using a
simple 3-wire serial interface. Each IC includes a 16-bit
shift register, and has a double-buffered input com-
posed of an input register and a DAC register (see the
Functional Diagram). In addition to the voltage output,
the amplifier’s negative input is available to the user.
The DAC is an inverted R-2R ladder network that con-
verts a digital input (10 data bits plus 3 sub-bits) into an
equivalent analog output voltage in proportion to the
applied reference voltage. Figure 1 shows a simplified
circuit diagram of the DAC.
Reference InputsThe reference input accepts positive DC and AC sig-
nals. The voltage at the reference input sets the full-
scale output voltage for the DAC. The reference input
voltage range is 0V to (VDD- 1.4V). The output voltage
(VOUT) is represented by a digitally programmable volt-
age source, as expressed in the following equation:
VOUT= (VREF
·NB / 1024) Gain
where NB is the numeric value of the DAC’s binary
input code (0 to 1023), VREFis the reference voltage,
and Gain is the externally set voltage gain.
The impedance at the reference input is code depen-
dent, ranging from a low value of 18kΩwhen the DAC
has an input code of 1550 hex, to a high value exceed-
ing several gigohms (leakage currents) with an input
code of 0000 hex. Because the input impedance at the
reference pin is code dependent, load regulation of the
reference source is important.
In shutdown mode, the MAX5304’s REF input enters a
high-impedance state with a typical input leakage cur-
rent of 0.001µA.
The reference input capacitance is also code depen-
dent and typically ranges from 15pF (with an input
code of all 0s) to 50pF (at full scale).
The MAX873 +2.5V reference is recommended for use
with the MAX5304.
Output AmplifierThe MAX5304’s DAC output is internally buffered by a
precision amplifier with a typical slew rate of 0.6V/µs.
Access to the output amplifier’s inverting input provides
the user greater flexibility in output gain setting/signal
conditioning (see the Applications Informationsection).
With a full-scale transition at the MAX5304 output, the
typical settling time to ±1/2LSB is 10µs when loaded
with 5kΩin parallel with 100pF (loads less than 2kΩ
degrade performance).
The amplifier’s output dynamic responses and settling
performances are shown in the Typical Operating
Characteristics.
Shutdown ModeThe MAX5304 features a software-programmable shut-
down that reduces supply current to a typical value of
4µA. Writing 111X XXXX XXXX XXXX as the input-con-
trol word puts the device in shutdown mode (Table 1).
OUT
SHOWN FOR ALL 1s ON DAC
MSB2R2R2R2RR
REF
AGND
Figure 1. Simplified DAC Circuit Diagram
_____________________Pin DescriptionDAC Output Amplifier FeedbackFB5
Reference Voltage InputREF6
GroundGND7
Positive Power SupplyVDD8
Serial-Clock InputSCLK4
Serial-Data InputDIN3
PINChip-Select Input. Active low.CS2
DAC Output VoltageOUT1
FUNCTIONNAME