CAT5137SDI-00GT3 ON Semiconductor

CAT5136, CAT5137, CAT5138 Digital Potentiometers (POTs) with 128 Taps and 2 I C Interface CAT5136, CAT5137, CAT5138 VDD VDD RH 2 2 I C I C SCL SCL Interface Interface and and RW RW SDA SDA Control Control Power On Power On RL Midscale Midscale GND GND (CAT5136) (CAT5137, CAT5138) Figure 1. Block Diagram Table 1. PIN FUNCTION DESCRIPTION Pin No. CAT5136 CAT5137/CAT5138 Pin Name Description 1 1 VDD Digital Supply Voltage (2.7 V to 5.5 V) 2 2 GND Ground 2 3 3 SCL Serial Bus Clock input for the I C Serial Bus. This clock is used to clock all data transfers into and out of the CAT5136 8 4 4 SDA Serial Data Input/Output Bidirectional Serial Data pin used to transfer data into and out of the CAT51368. This is an Open-Drain I/O and can be wire ORd with other Open-Drain (or Open Collector) I/Os. 5 5 RW Wiper Terminal for the potentiometer 6 RL Low Reference Terminal for the potentiometer 6 RH High Reference Terminal for the potentiometer Table 2. ABSOLUTE MAXIMUM RATINGS Parameter Symbol Range Unit Temperature Under Bias 55 to +125 C Storage Temperature Range T 65 to 150 C STG Voltage on any SDA, SCL, A0 & A1 pins with respect to Ground (Note 1) 0.3 to V + 0.3 V DD Voltage on RH, RL & RW pins with respect to Ground 0.3 to V + 0.3 V DD V with respect to Ground 0.3 to +6 V DD Wiper Current (10 sec) 6 mA Lead Soldering temperature (10 sec) +300 C Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. 1. Latch-up protection is provided for stresses up to 100 mA on address and data pins from 0.3 V to V +0.3 V. DD Table 3. RECOMMENDED OPERATION CONDITIONS Parameter Symbol Value Unit Digital Supply Voltage V +2.7 to +5.5 V DD Operating Temperature Range 40 to +85 C