NCD2100MTR

NCD2100 Non-volatile Digital Programmable Capacitor INTEGRATED CIRCUITS DIVISION Features Description Wide capacitance range of 6.6pF to 37.553pF The NCD2100 is an EEPROM based digitally Small step size: 0.063pF programmable variable capacitor that provides Digitally select up to 1024 capacitance values. capacitive offset trimming for capacitance sensitive Operating supply voltage range of 2.5V to 5.5V circuits. Programming the non-volatile EEPROM =1 A (Typical) Minimal current draw: I register value or implementing on demand DD capacitance value changes are easily accomplished Industrial temperature range -40Cto+85C by means of the simple two-wire serial bus. Very small size DFN: 2 mm x 2 mm (0.079 in x 0.079 in) Providing 1024 discrete capacitance values over a TSOT: 2.9 mm x 2.8 mm (0.114 in x 0.110 in) nominal value range of 6.6pF to 37.553pF with step Moisture Sensitivity Level 1 sizes of 0.063pF, the NCD2100 is well suited to ensure proper operation of capacitive critical circuits. Applications Additionally, to ensure interoperability over a broad VCXOs array of design environments, the NCD2100 is rated Crystal Oscillators for operation with supply voltages of 2.5V to 5.5V Tunable RF Stages across the temperature range of -40Cto+85C. Filter Tuning RFID Tags Ordering Information Industrial Wireless Controls Part Description Capacitive Sensor Trimming NCD2100MTR NCD2100 DFN-6 in T&R (3000/Reel) NCD2100TTR NCD2100 TSOT-6 in T&R (3000/Reel) Figure 1. NCD2100 Block Diagram V DD NCD2100 CDAC1 X1 C 0 PV CDAC2 DIGITAL INTERFACE DA CDAC3 CLK V SS DS-NCD2100-R02 www.ixysic.com 1NCD2100 INTEGRATED CIRCUITS DIVISION 1. Specifications 3 1.1 Package Pinout 3 1.2 Pin Descriptions . 3 1.3 Absolute Maximum Ratings . 4 1.4 Recommended Operating Conditions . 4 1.5 ESD Ratings 4 1.6 General Conditions for Electrical Characteristics . 4 1.7 Capacitor Electrical Characteristics (Pin X1) 5 1.8 Power Supply 5 1.9 Digital Interface Electrical Characteristics 6 1.10 Digital Interface AC Characteristics 6 2. Performance Data . 8 3. Functional Description 10 3.1 Introduction 10 3.2 CDAC1: Capacitor Segment 1 (10:9) . 10 3.3 CDAC2: Capacitor Segment 2 (8:6) 11 3.4 CDAC3: Capacitor Segment 3 (5:1) 11 3.5 Operating Modes 12 3.5.1 Shift Register Mode 12 3.5.2 Memory Mode . 12 3.6 Serial Data Interface . 13 3.7 Programming the Non-Volatile Memory . 13 3.7.1 Memory Programming Conditions . 13 3.7.2 Programming Control Data into Memory 13 3.8 Verification of Memory Contents 13 4. Load Capacitance Programming Procedure . 14 4.1 Capacitance Trim Code Determination . 14 4.2 Programming the Memory . 15 4.2.1 All-Bits Programming Mode (CHK=1) . 15 4.2.2 Single-Bit Programming Mode (CHK=0) . 16 4.3 Programming Verification 17 4.4 Erasing the Memory 17 5. Manufacturing Information . 18 5.1 Moisture Sensitivity 18 5.2 ESD Sensitivity . 18 5.3 Soldering Profile . 18 5.4 Board Wash 18 5.5 Mechanical Dimensions . 19 5.5.1 NCD2100T TSOT-6 Package Dimensions . 19 5.5.2 NCD2100TTR TSOT-6 Tape & Reel Specification . 19 5.5.3 NCD2100M DFN-6 Package Dimensions 20 5.5.4 NCD2100MTR DFN-6 Tape & Reel Specification . 20 2 www.ixysic.com R02