DS4432 Rev 0 12/08 2 Dual-Channel, I C, 7-Bit Sink/Source Current DAC General Description Features 2 The DS4432 contains two I C programmable current Two Current DACs DACs that are each capable of sinking and sourcing Full-Scale Current 50A to 200A current up to 200A. Each DAC output has 127 sink and 127 source settings that are programmed using the Full-Scale Range for Each DAC Determined by 2 I C interface. The current DAC outputs power up in a External Resistors high-impedance state. 127 Settings Each for Sink and Source Modes 2 Applications I C-Compatible Serial Interface Low Cost Power-Supply Adjustment Power-Supply Margining Small Package (8-Pin SOP) Adjustable Current Sink or Source -40C to +85C Temperature Range 2.7V to 5.5V Operating Range Pin Configuration Ordering Information PART TEMP RANGE PIN-PACKAGE TOP VIEW DS4432U+ -40C to +85C 8 SOP DS4432U+T&R -40C to +85C 8 SOP + SDA18V CC +Denotes a lead(Pb)-free/RoHS-compliant package. SCL 2 7 OUT1 T&R = Tape and reel. DS4432 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 DS4432 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, 7-Bit 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 FS0, FS1, OUT0, OUT1 Soldering Temperature ...............................Refer to the IPC/JEDEC Relative to Ground..................................-0.5V to (V + 0.5V) J-STD-020 Specification. CC (Not to exceed 6.0V.) 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 Input Logic 1 (SDA, SCL) V 0.7 x V V + 0.3 V IH CC CC Input Logic 0 (SDA, SCL) V -0.3 0.3 x V V IL CC Full-Scale Resistor Values R , R (Note 2) 40 160 k FS0 FS1 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 3) 150 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 RFS Voltage V 0.997 V RFS I/O Capacitance C 10 pF I/O OUTPUT CURRENT SOURCE CHARACTERISTICS (V = +2.7V to +5.5V, T = -40C to +85C.) CC A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Output Voltage for Sinking Current V (Note 4) 0.5 3.5 V OUT:SINK Output Voltage for Sourcing V - CC V (Note 4) 0 V OUT:SOURCE Current 0.75 Full-Scale Sink Output Current I (Notes 1, 4) 50 200 A OUT:SINK Full-Scale Source Output Current I (Notes 1, 4) -200 -50 A OUT:SOURCE Output Current Full-Scale +25C, V = 3.3V using 0.1% R CC FS I 5 % OUT:FS Accuracy resistor, V = V = 1.2V (Note 2) OUT0 OUT1 Output Current Temperature I (Note 5) 130 ppm/C OUT:TC Coefficient 2 DS4432