ds4302 Maxim Integrated Products, Inc., ds4302 Datasheet
ds4302
Related parts for ds4302
ds4302 Summary of contents
Page 1
... Rev 1; 6/04 2-Wire, 5-Bit DAC with Three Digital Outputs General Description The DS4302 is a 5-bit digital-to-analog converter (DAC) with three programmable digital outputs. The DS4302 communicates through a 2-wire, SMBus™-compatible, serial interface. The tiny 8-pin µSOP package is ideal for use in space-constrained applications. ...
Page 2
DAC with Three Digital Outputs ABSOLUTE MAXIMUM RATINGS Voltage Range SDA, and SCL Pins CC Relative to Ground.............................................-0.5V to +6.0V Operating Temperature Range ...........................-40°C to +85°C Stresses beyond those listed under “Absolute Maximum Ratings” may ...
Page 3
... SDA = SCL = V STBY Note 3: No load OUT Note 4: The DS4302 will not obstruct the SDA and SCL lines if V does not violate their min and max input-voltage levels. Note 5: C —total capacitance of one bus line in picofarads. B ...
Page 4
... SUPPLY VOLTGE 300 OUTPUTS UNLOADED 250 SDA = SCL = V CC 200 150 100 50 0 4.50 4.75 5.00 5.25 5.50 SUPPLY VOLTAGE (V) V vs. DAC SETTING OUT 2.0 DS4302-020 VERSION 1.5 1.0 0 DAC SETTING (dec) 4 _____________________________________________________________________ Typical Operating Characteristics STANDBY SUPPLY CURRENT vs. TEMPERATURE 300 OUTPUTS UNLOADED SDA = SCL = ...
Page 5
... DAC with Three Digital Outputs SDA 2-WIRE INTERFACE SCL V OUT BUFFER GND DS4302 _____________________________________________________________________ DATA BYTE REGISTER LSB MSB DAC VALUE 5-BIT DAC BANDGAP REFERENCE Functional Diagram OUTPUT CELL OUTPUT CELL P1 OUTPUT CELL P2 5 ...
Page 6
... P1 MSB Figure 1. Data Byte Configuration Detailed Description The DS4302 contains a 5-bit DAC and three programma- ble digital outputs. The DAC setting and the pro- grammed output levels are contained in a 1-byte data word that defaults to 00h on power-up (see Figure 1 for data byte configuration). The upper 5 MSbits of the byte ...
Page 7
... The slave address (see Figure 4) is the most signifi- cant 7 bits and the R/W bit is the least significant bit. The DS4302’s slave address is 0101100X (binary), where X is the R/W bit. If the R/W bit is zero (01011000), the master will write data to the slave. If the R one (01011001), the master will read data from the slave ...
Page 8
... STOP condition. See Figure 2 for the read com- mand example. Application Information Power-Supply Decoupling To achieve the best results when using the DS4302, decouple the power supply with a 0.01µ 0.1µF capacitor. Use high-quality, ceramic, surface-mount capacitors, and mount the capacitors as close as pos- ...