DS4412 Rev 1 10/08 2 Dual-Channel, I C Adjustable Sink/Source Current DAC General Description Features 2 Two Current DACs The DS4412 contains two I C adjustable-current DACs that are each capable of sinking or sourcing current. Each Full-Scale Current 500A to 2mA output has 15 sink and 15 source settings that are pro- Full-Scale Range for Each DAC Determined by 2 grammed by I C interface. The full-scale range and step External Resistors size of each output is determined by an external resistor 15 Settings Each for Sink and Source Modes that can adjust the output current over a 4:1 range. 2 I C-Compatible Serial Interface The output pins, OUT0 and OUT1, power-up in a high- Low Cost impedance state. Small Package (8-Pin SOP) Applications -40C to +85C Temperature Range Power-Supply Adjustment 2.7V to 5.5V Operation Power-Supply Margining Adjustable Current Sink or Source Ordering Information Pin Configuration PART TEMP RANGE PIN-PACKAGE DS4412U+ -40C to +85C 8 SOP TOP VIEW DS4412U+T&R -40C to +85C 8 SOP + +Denotes a lead-free/RoHS-compliant package. 1 8 SDA V CC T&R = Tape and reel. SCL 2 7 OUT1 DS4412 FS1 3 6 OUT0 GND 4 5 FS0 SOP Typical Operating Circuit V V CC OUT0 V OUT1 4.7k 4.7k OUT OUT V CC SDA DC-DC DC-DC R R 0A 1A CONVERTER CONVERTER SCL FB FB OUT0 DS4412 OUT1 R R GND 0B 1B FS0 FS1 R R FS0 FS1 Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.2 Dual-Channel, I C Adjustable Sink/Source Current DAC ABSOLUTE MAXIMUM RATINGS Voltage Range on V , SDA, and SCL Operating Temperature Range ...........................-40C to +85C CC Relative to Ground.............................................-0.5V to +6.0V Storage Temperature Range .............................-55C to +125C Voltage Range on OUT0, OUT1 Relative to Soldering Temperature .....................................Refer to IPC/JEDEC Ground ................-0.5V to (V + 0.5V) (Not to exceed 6.0V.) J-STD-020 Specification CC 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. RECOMMENDED OPERATING CONDITIONS (T = -40C to +85C) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage V (Note 1) 2.7 5.5 V CC 0.7 x V + CC Input Logic 1 (SDA, SCL) V V IH V 0.3 CC 0.3 x Input Logic 0 (SDA, SCL) V -0.3 V IL V CC DC ELECTRICAL CHARACTERISTICS (V = +2.7V to +5.5V, T = -40C to +85C.) CC A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Current I V = 5.5V (Note 2) 500 A CC CC Input Leakage (SDA, SCL) I V = 5.5V 1 A IL CC Output Leakage (SDA) I 1 A L V = 0.4V 3 OL Output Current Low (SDA) I mA OL V = 0.6V 6 OL R Voltage V 0.607 V FS RFS I/O Capacitance C 10 pF I/O OUTPUT CURRENT CHARACTERISTICS (V = +2.7V to +5.5V, T = -40C to +85C.) CC A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Output Voltage for Sinking V V > V (Note 3) 0.5 3.5 V OUT:SINK CC OUT:SINK Output Voltage for Sourcing V - CC V (Note 3) 0 V OUT:SOURCE Current 0.75 Full-Scale Sink Output Current I (Note 3) 0.5 2.0 mA OUT:SINK Full-Scale Source Output Current I (Note 3) -2.0 -0.5 mA OUT:SOURCE +25C, V = 4.0V using 0.1% R CC FS Output-Current Full-Scale I resistor (Note 4) 6 % OUT:FS Accuracy V = V = 1.2V OUT0 OUT1 Output-Current Temperature I (Note 5) 75 ppm/C OUT:TC Coefficient 2 DS4412