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19-1719; Rev 0; 4/00
Low-Cost, Low-Power, 6-Bit DACs with 3-Wire Serial Interface in SOT23
General Description
The MAX5363/MAX5364/MAX5365 low-cost, 6-bit digitalto-analog converters (DACs) in miniature 6-pin SOT23 packages have a simple 3-wire, SPI/QSPI/ MICROWIRE-compatible serial interface that operates up to 10MHz. The MAX5363 has an internal +2V reference and operates from a +2.7V to +3.6V supply. The MAX5364 has an internal +4V reference and operates from a +4.5V to +5.5V supply. The MAX5365 operates over the full +2.7 to +5.5V supply range and has an internal reference equal to 0.9 VDD. The MAX5363/MAX5364/MAX5365 require an extremely low supply current of only 150A (typ) and provide a buffered voltage output. These devices power up at zero code and remain there until a new code is written to the DAC registers. This provides additional safety for applications that drive valves or other transducers that need to be off on power-up. The MAX5363/MAX5364/ MAX5365 include a 1A, low-power shutdown mode that features software-selectable output loads of 1k, 100k, or 1M to ground.
Features
o 6-Bit Resolution in a Miniature 6-Pin SOT23 Package o Wide +2.7V to +5.5V Supply Range (MAX5365) o <1A Shutdown Mode o Software-Selectable Output Resistance During Shutdown o Buffered Output Drives Resistive Loads o Low-Glitch Power-On Reset to Zero DAC Output o 3-Wire SPI/QSPI/MICROWIRE-Compatible Interface o <5% Full-Scale Error (MAX5365) o <1LSB max INL/DNL o Low 230A max Supply Current
MAX5363/MAX5364/MAX5365
Ordering Information
PART TEMP. RANGE -40C to +85C -40C to +85C -40C to +85C PINPACKAGE 6 SOT23-6 6 SOT23-6 6 SOT23-6 SOT TOP MARK AADE AADG AADI
Applications
Automatic Tuning (VCO) Power Amplifier Bias Control Programmable Threshold Levels Automatic Gain Control (AGC)
MAX5363EUT-T MAX5364EUT-T MAX5365EUT-T
Selector Table
PART MAX5363 MAX5364 MAX5365 INTERNAL REFERENCE 2V 4V 0.9 V DD
SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp.
Typical Operating Circuit
+2.7V TO +5.5V
Pin Configuration
TOP VIEW
OUT MC68XXXX PCS0 MOSI SCK GND CS DIN SCLK VDD OUT
1
6
CS
GND 2
MAX5365
MAX5363 MAX5364 MAX5365
5
SCLK
VDD 3
4
DIN
SOT23
________________________________________________________________ Maxim Integrated Products
1
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Low-Cost, Low-Power, 6-Bit DACs with 3-Wire Serial Interface in SOT23 MAX5363/MAX5364/MAX5365
ABSOLUTE MAXIMUM RATINGS
VDD to GND ..............................................................-0.3V to +6V OUT ............................................................-0.3V to (VDD + 0.3V) CS, SCLK, DIN to GND ............................................-0.3V to +6V Maximum Current into Any Pin............................................50mA Continuous Power Dissipation (TA = +70C) 6-Pin SOT23 (derate 8.7mW/C above +70C)...........696mW Operating Temperature Range ...........................-40C to +85C Storage Temperature Range .............................-65C to +150C Maximum Junction Temperature .....................................+150C Lead Temperature (soldering, 10s) .................................+300C
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.
ELECTRICAL CHARACTERISTICS
(VDD = +2.7V to +3.6V (MAX5363), VDD = +4.5V to +5.5V (MAX5364), VDD = +2.7V to +5.5V (MAX5365), RL = 10k, CL = 50pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are TA = +25C.)
PARAMETER STATIC ACCURACY Resolution Integral Linearity Error Differential Linearity Error Offset Error Offset Error Supply Rejection Offset Error Temperature Coefficient Full-Scale Error Full-Scale Error Supply Full-Scale Error Temperature Coefficient DAC OUTPUT MAX5363 Internal Reference Voltage (Note 5) REF MAX5364 MAX5365 Output Load Regulation Shutdown Output Resistance to GND DYNAMIC PERFORMANCE Voltage Output Slew Rate Output Settling Time Digital Feedthrough Positive and negative To 1/2 LSB, 50k and 50pF load (Note 6) Code = 0, all digital inputs from 0 to VDD 0.4 20 2 V/s s nVs Code = 63, 0 to 100A Code = 0, 0 to 100A [D13, D12] = 0, 1 VOUT = 0 to VDD [D13, D12] = 1, 0 [D13, D12] = 1, 1 1.8 3.6 0.85 x VDD 2 4 0.9 x VDD 0.5 0.5 1k 100k 1M 2.2 4.4 0.95 x VDD V INL DNL VOS (Note 1) Guaranteed monotonic (Note 2) MAX5365 (Notes 2, 3) MAX5363/MAX5364 MAX5365 Code = 63, no load Code = 63 (Note 4) Code = 63 MAX5363/MAX5364 MAX5365 MAX5363/MAX5364 MAX5363/MAX5364 MAX5365 40 10 3 1 10 5 50 1 6 1 1 25 60 Bits LSB LSB mV dB ppm/C % of ideal FS dB ppm/C SYMBOL CONDITIONS MIN TYP MAX UNITS
LSB
2
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Low-Cost, Low-Power, 6-Bit DACs with 3-Wire Serial Interface in SOT23
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +2.7V to +3.6V (MAX5363), VDD = +4.5V to +5.5V (MAX5364), VDD = +2.7V to +5.5V (MAX5365), RL = 10k, CL = 50pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are TA = +25C.)
PARAMETER Digital-Analog Glitch Impulse Wake-Up Time POWER REQUIREMENTS MAX5363 Supply Voltage VDD MAX5364 MAX5365 Supply Current DIGITAL INPUTS Input Low Voltage Input High Voltage Input Hysteresis Input Capacitance Input Leakage Current VIL VIH VH CIN IIN (Note 7) 0.7 x VDD 0.05 x VDD 10 1 0.3 x VDD V V V pF A IDD No load, all digital inputs at 0 or V DD , code = 63 Shutdown mode 2.7 4.5 2.7 150 3.6 5.5 5.5 230 1 A V SYMBOL CONDITIONS Code 31 to code 32 From software shutdown MIN TYP 40 50 MAX UNITS nVs s
MAX5363/MAX5364/MAX5365
TIMING CHARACTERISTICS
(Figures 3 and 4, VDD = +2.7V to +3.6V (MAX5363), VDD = +4.5V to +5.5V (MAX5364), VDD = +2.7V to +5.5V (MAX5365), RL = 10k, CL = 50pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are TA = +25C.) (Note 7)
PARAMETER SCLK Period SCLK Pulse Width High SCLK Pulse Width Low CS Fall to SCLK Rise Setup Time SCLK Rise to CS Rise Hold Time DIN Setup Time DIN Hold Time SCLK Rise to CS Fall Delay CS Rise to SCLK Rise Hold CS Pulse Width High SYMBOL tCP tCH tCL tCSS tCSH tDS tDH tCS0 tCS1 tCSW CONDITIONS MIN 100 40 40 40 0 40 0 10 40 100 TYP MAX UNITS ns ns ns ns ns ns ns ns ns ns
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Low-Cost, Low-Power, 6-Bit DACs with 3-Wire Serial Interface in SOT23 MAX5363/MAX5364/MAX5365
TIMING CHARACTERISTICS (continued)
(Figures 3 and 4, VDD = +2.7V to +3.6V (MAX5363), VDD = +4.5V to +5.5V (MAX5364), VDD = +2.7V to +5.5V (MAX5365), RL = 10k, CL = 50pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are TA = +25C.) (Note 7) Note 1: Note 2: Note 3: Note 4: Note 5: Note 6: Note 7: Guaranteed from code 2 to code 63. The offset value extrapolated from the range over which the INL is guaranteed. MAX5365 tested at 5V 10%. MAX5363 tested at 3V 10%; MAX5364 tested at 5V 10%. Actual output voltages at full scale are 63/64 VREF. Output settling time is measured by stepping from code 2 to code 63, and from code 63 to code 2. Guaranteed by design.
Typical Operating Characteristics
(VDD = +3.0V (MAX5363), VDD = +5.0V (MAX5364/MAX5365), TA = +25C, unless otherwise noted.)
INTEGRAL NONLINEARITY vs. SUPPLY VOLTAGE
MAX5363/4/5-01 MAX5363/4/5-02
INTEGRAL NONLINEARITY vs. CODE
0.030 0.025 0.020 0.015 0.010 0.005 0 -0.005 -0.010 -0.015 -0.020 -0.025 -0.030 -0.035 -0.040 -0.045 0 25 CODE 50 0
INTEGRAL NONLINEARITY vs. TEMPERATURE
MAX5363/4/5-03
0
INL (LSB)
INL (LSB)
INL (LSB)
-0.025
-0.025
-0.050 75 2.5 3.0 3.5 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE (V)
-0.050 -40 -20 0 20 40 60 80 100 TEMPERATURE (C)
DIFFERENTIAL NONLINEARITY vs. CODE
MAX5363/4/5-04
DIFFERENTIAL NONLINEARITY vs. SUPPLY VOLTAGE
MAX5363/4/5-05
DIFFERENTIAL NONLINEARITY vs. TEMPERATURE
MAX5363/4/5-06
0 -0.005
0 -0.005
0.010 0.005 DNL (LSB) 0 -0.005 -0.010 -0.015 -0.020 0 25 CODE 50
DNL (LSB)
-0.015
DNL (LSB)
-0.010
-0.010
-0.015
-0.020
-0.020
-0.025 75 2.5 3.0 3.5 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE (V)
-0.025 -40 -20 0 20 40 60 80 100 TEMPERATURE (C)
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Low-Cost, Low-Power, 6-Bit DACs with 3-Wire Serial Interface in SOT23
Typical Operating Characteristics (continued)
(VDD = +3.0V (MAX5363), VDD = +5.0V (MAX5364/MAX5365), TA = +25C, unless otherwise noted.)
TOTAL UNADJUSTED ERROR vs. CODE
MAX5363/4/5-07
MAX5363/MAX5364/MAX5365
OFFSET ERROR vs. SUPPLY VOLTAGE
MAX5363/4/5-08
OFFSET ERROR vs. TEMPERATURE
MAX5363/4/5-09
0.15 0.10 0.05 TUE (LSB) 0 -0.05 -0.10 -0.15 -0.20 0 25 CODE 50
0
0
VOS (mV)
VOS (mV)
-0.25
-0.25
-0.50 75 2.5 3.0 3.5 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE (V)
-0.50 -40 -20 0 20 40 60 80 100 TEMPERATURE (C)
FULL-SCALE ERROR vs. TEMPERATURE
0.75 0.50 FULL-SCALE ERROR (LSB) 0.25 0 -0.25 -0.50 NO LOAD -0.75 2.5 3.0 3.5 4.0 4.5 5.0 SUPPLY VOLTAGE (V) -1.2 5.5 -0.75
MAX5363/4/5-10
FULL-SCALE ERROR vs. TEMPERATURE
1.2 0.8 FULL-SCALE ERROR (LSB) FULL-SCALE ERROR (%) 0.4 0 -0.4 -0.8 0.75 0.50 0.25 0 MAX5365 -0.25 -0.50 -0.4 -0.8 -1.2 100 MAX5363 MAX5364
MAX5363/4/5-11
MAX5364 MAX5363 MAX5365
1.2 0.8 0.4 0 FULL-SCALE ERROR (%)
-40
-20
0
20
40
60
80
TEMPERATURE (C)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX5363/4/5-12
SUPPLY CURRENT vs. TEMPERATURE
NO LOAD
MAX5363/4/5-13
200 180 160 SUPPLY CURRENT (A) 140 120 100 80 60 40 20 0 2.5 3.0 3.5 4.0 4.5 5.0 MAX5365 MAX5364 MAX5363
160 155 SUPPLY CURRENT (A) 150 145 140 135 130
MAX5364
MAX5365 MAX5363
5.5
-40
-20
0
20
40
60
80
100
SUPPLY VOLTAGE (V)
TEMPERATURE (C)
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Low-Cost, Low-Power, 6-Bit DACs with 3-Wire Serial Interface in SOT23 MAX5363/MAX5364/MAX5365
Typical Operating Characteristics (continued)
(VDD = +3.0V (MAX5363), VDD = +5.0V (MAX5364/MAX5365), TA = +25C, unless otherwise noted.)
SHUTDOWN SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX5363/4/5-14 MAX5363/4/5-15
SUPPLY CURRENT vs. CODE
160 155 SUPPLY CURRENT (A) 150 145 140 135 130 0 8 16 24 32 CODE 40 48 56 64 MAX5364 VDD = +5V MAX5365 VDD = +5V 1.0 0.8 SUPPLY CURRENT (A)
SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE
MAX5363/4/5-16
1.0 0.8 SUPPLY CURRENT (A)
0.6
0.6 VDD = +5V 0.4 VDD = +3V 0.2
0.4
MAX5363 VDD = +5V
MAX5363 VDD = +3V
0.2
0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE (V)
0 -40 -20 0 20 40 60 80 100 TEMPERATURE (C)
OUTPUT LOAD REGULATION
4.5 VOUT FULL SCALE (V) 4.0 3.5 3.0 2.5 2.0 1.5 C D E 0.1 0 0 1 2 3 4 5 6 7 8 9 10 LOAD CURRENT (mA) A: MAX5364/MAX5365, VDD = +4.5V, FULL SCALE OR SOURCING B: MAX5363, FULL SCALE, VDD = +2.7V SINKING, VDD = +5.0V SOURCING C: MAX5363, FULL SCALE, VDD = +2.7V SOURCING D: ZERO CODE, VDD = +2.7V SINKING E: ZERO CODE, VDD = +5.5V SINKING B VOUT ZERO CODE (V) 0.2 VDD 2V/div OUT 50mV/div A
MAX5363/4/5-17
OUTPUT VOLTAGE ON POWER-UP
MAX5363/4/5-18
MAX5363 OUTPUT VOLTAGE EXITING SHUTDOWN
MAX5363/4/5-19
OUT 500mV/div
CS 3V/div
4s/div
10s/div
MAX5363 OUTPUT SETTLING FROM 1/4FS TO 3/4FS
MAX5363/4/5-20
MAX5363 OUTPUT SETTLING FROM 3/4FS TO 1/4FS
MAX5363/4/5-21
OUT 0.5V/div
OUT 0.5V/div
CS 3V/div
CS 3V/div
1s/div
1s/div
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Low-Cost, Low-Power, 6-Bit DACs with 3-Wire Serial Interface in SOT23
Typical Operating Characteristics (continued)
(VDD = +3.0V (MAX5363), VDD = +5.0V (MAX5364/MAX5365), TA = +25C, unless otherwise noted.)
MAX5363/MAX5364/MAX5365
MAX5363 OUTPUT SETTLING 1/4LSB STEP UP
MAX5363/4/5-22
MAX5363 OUTPUT SETTLING 1/4LSB STEP DOWN
MAX5363/4/5-23
OUT 20mV/div AC-COUPLED
OUT 20mV/div AC-COUPLED
CS 3V/div
CS 3V/div
2s/div 0 x 1F TO 0 x 20 0 x 20 TO 0 x 1F
2s/div
Pin Description
PIN 1 2 3 4 5 6 NAME OUT GND VDD DIN SCLK CS FUNCTION DAC Voltage Output Ground Power-Supply Input Serial Data Input Serial Clock Input Chip-Select Input
Analog Section
The MAX5363/MAX5364MAX5365 employ a currentsteering DAC topology as shown in Figure 2. At the core of the DAC is a reference voltage-to-current converter (V/I) that generates a reference current. This current is mirrored to 63 equally weighted current sources. DAC switches control the outputs of these current mirrors so that only the desired fraction of the total current-mirror currents is steered to the DAC output. The current is then converted to a voltage across a resistor, and this voltage is buffered by the output buffer amplifier. Output Voltage Table 1 shows the relationship between the DAC code and the analog output voltage. The 6-bit DAC code is binary unipolar with 1LSB = (VREF/64). The MAX5363/ MAX5364 have a full-scale output voltage of (+2V - 1LSB) and (+4V - 1LSB), respectively, set by the internal references. The MAX5365 has a full-scale output voltage of (0.9 VDD - 1LSB). Output Buffer The DAC voltage output is an internally buffered unitygain follower that slews up to 0.4V/s. The output can swing from 0 to full scale. With a 1/4FS to 3/4FS output transition, the amplifier outputs typically settle to 1/2LSB in less than 5s when loaded with 10k in parallel with 50pF. The buffer amplifiers are stable with any
7
Detailed Description
The MAX5363/MAX5364/MAX5365 voltage-output, 6-bit DACs offer full 6-bit performance with less than 1LSB integral nonlinearity error and less than 1LSB differential nonlinearity error, ensuring monotonic performance. The devices use a simple 3-wire, SPI/QSPI/ MICROWIREcompatible serial interface that operates up to 10MHz. The MAX5363/MAX5364/MAX5365 include an internal reference, an output buffer, and three low-current shutdown modes, making these devices ideal for lowpower, highly integrated applications. Figure 1 shows the devices' functional diagram.
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Low-Cost, Low-Power, 6-Bit DACs with 3-Wire Serial Interface in SOT23 MAX5363/MAX5364/MAX5365
VDD
REF
CURRENT-STEERING DAC
OUT
63 CS DIN SCLK CONTROL LOGIC DATA LATCH 6 SERIAL INPUT REGISTER
MAX5363 MAX5364 MAX5365
GND
Figure 1. Functional Diagram
combination of resistive loads >10k and capacitive loads <50pF.
VREF
SW1
SW2
SW63
Power-On Reset The MAX5363/MAX5364/MAX5365 have a power-on reset circuit to set the DAC's output to 0 when VDD is first applied or when VDD dips below 1.7V (typ). This ensures that unwanted DAC output voltages will not occur immediately following a system startup, such as after a loss of power. The output glitch on startup is typically less than 50mV.
OUT
Figure 2. Current-Steering DAC Topology
Table 1. Unipolar Code Output Voltage
OUTPUT VOLTAGE DAC CODE [D11-D6] MAX5363 111 111 100 000 000 001 000 000 2V x (63/64) 1V 31mV 0 MAX5364 4V x (63/64) 2V 63mV 0 MAX5365 0.9 x VDD x (63/64) 0.9 x VDD / 2 0.9 x VDD / 64 0
Shutdown Mode The MAX5363/MAX5364/MAX5365 include three software-controlled shutdown modes that reduce the supply current to <1A. All internal circuitry is disabled, and a known impedance is placed from OUT to GND to ensure 0V while in shutdown. Table 2 details the three shutdown modes of operation.
Digital Section
3-Wire Serial Interface
The MAX5363/MAX5364/MAX5365s' digital interface is a standard 3-wire connection compatible with SPI/QSPI/MICROWIRE interfaces. The chip-select input (CS) frames the serial data loading at the data-input pin (DIN). Immediately following 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 bits have been loaded into the serial
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Low-Cost, Low-Power, 6-Bit DACs with 3-Wire Serial Interface in SOT23
input register, it transfers its contents to the DAC latch on CS's low-to-high transition (Figure 3). Note that if CS is not kept low during the entire 16 SCLK cycles, data will be corrupted. In this case, reload the DAC latch with a new 16-bit word. The serial clock (SCLK) can idle either high or low between transitions. Figure 4 shows the complete 3-wire serial interface transmission. Table 3 lists serial interface mapping.
Digital Inputs and Interface Logic
The digital interface for the 6-bit DAC is based on a 3-wire standard that is compatible with SPI, QSPI, and MICROWIRE interfaces. The three digital inputs (CS, DIN, and SCLK) load the digital input serially into the DAC. All of the digital inputs include Schmitt-trigger buffers to accept slow-transition interfaces. This means that optocouplers can interface directly to the MAX5363/ MAX5364/MAX5365 without additional external logic. The digital inputs are compatible with CMOS logic levels and can be driven with voltages up to +5.5V regardless of the supply voltage.
MAX5363/MAX5364/MAX5365
Applications Information
Device Powered by an External Reference
Since the MAX5365 generates an output voltage proportional to VDD, a noisy power supply will affect the accuracy of the on-board reference, thereby affecting the overall accuracy of the DAC. The circuit in Figure 5 rejects this power-supply noise by powering the device directly with a precision voltage reference, improving overall system accuracy. The MAX6103 (+3V, 75ppm) or the MAX6105 (+5V, 75ppm) precision voltage references are ideal choices due to the low power requirements of the MAX5365. This solution is also useful when the required full-scale output voltage is different from the available supply voltages.
Power-Supply Bypassing and Layout
Careful PC board layout is important for best system performance. To reduce crosstalk and noise injection, keep analog and digital signals separate. To ensure that the ground return from GND to the supply ground is short and low impedance, a ground plane is recommended. Bypass VDD with a 0.1F to ground as close as possible to the device. If the supply is excessively noisy, connect a 10 resistor in series with the supply and VDD and add additional capacitance.
Table 2. Shutdown Modes
DAC CODE [D13 AND D12] 01 10 11 MODE Shutdown Shutdown Shutdown OUTPUT RESISTANCE TO GROUND () 1k 100k 1M MAXIMUM SUPPLY CURRENT ( A) 1 1 1
Table 3. Serial Interface Mapping
16-BIT SERIAL WORD MSB XX00 XX00 XX00 XX00 XX01 XX10 XX11
X = Don't care
ANALOG LSB OUTPUT 0V VREF (63/64) VREF (1/64) VREF (32/64) 0V 0V 0V XXXX XXXX XXXX XXXX XXXX XXXX XXXX
FUNCTION Normal operation Normal operation Normal operation Normal operation Shutdown, 1k to GND Shutdown, 100k to GND Shutdown, 1M to GND
0000 1111 0000 1000 XXXX XXXX XXXX
0000 11XX 01XX 00XX XXXX XXXX XXXX
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Low-Cost, Low-Power, 6-Bit DACs with 3-Wire Serial Interface in SOT23
;;;;;;;; ;;;;;;;;; ; ; ;;
tCSH1 CS tCSHO tCSSO tCH tCL tCSS1 SCLK tDH tDS DIN D15 D14 D0
MAX5363/MAX5364/MAX5365
Figure 3. 3-Wire Serial Interface Timing Diagram
CS
DAC UPDATED
SCLK
DIN
D15 D14 D13 D12 D11 D10 D9 D8
D7 D6 D5 D4 D3 D2 D1 D0
Figure 4. Complete 3-Wire Serial Interface Transmission
+3.2V TO +12V
Chip Information
TRANSISTOR COUNT: 2160
IN MAX6103 OUT GND +3.00V 0.1F
VDD CS DIN SCLK MAX5365 GND OUT 0 TO +2.7V
Figure 5. Powering the MAX5365 with a Precision Voltage Reference 10 ______________________________________________________________________________________
Low-Cost, Low-Power, 6-Bit DACs with 3-Wire Serial Interface in SOT23
Package Information
6LSOT.EPS
MAX5363/MAX5364/MAX5365
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Low-Cost, Low-Power, 6-Bit DACs with 3-Wire Serial Interface in SOT23 MAX5363/MAX5364/MAX5365
NOTES
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2000 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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