MCP4021-202E/MS Microchip

MCP4021/2/3/4 Low-Cost NV Digital POT with WiperLock Technology Package Types Features MCP4021 MCP4022 Non-volatile Digital Potentiometer in SOT-23, SOIC, MSOP and DFN packages SOIC, MSOP, DFN SOT-23-6 Potentiometer Rheostat 64 Taps: 63 Resistors with Taps to terminal A and terminal B V V A 1 8 U/D DD DD 1 6 A W Simple Up/Down (U/D) Protocol V V W 2 7 NC 2 5 SS SS Power-on Recall of Saved Wiper Setting A B A 3 6 U/D CS B 3 4 B Resistance Values: 2.1 k, 5 k, 10 k or 50 k W W 4 5 CS Low Tempco: - Absolute (Rheostat): 50 ppm (0C to 70C typ.) MCP4023 MCP4024 - Ratiometric (Potentiometer): 10 ppm (typ.) SOT-23-6 SOT-23-5 Potentiometer Rheostat Low Wiper Resistance: 75 (typ.) WiperLock Technology to Secure the wiper V A V W 1 A 6 1 5 DD DD W setting in non-volatile memory (EEPROM) V W V SS 2 5 SS 2 B W B A High-Voltage Tolerant Digital Inputs: Up to 12.5V U/D CS U/D CS 3 4 3 4 Low-Power Operation: 1 A Max Static Current Wide Operating Voltage: 2.7V to 5.5V Extended Temperature Range: -40C to +125C Block Diagram Wide Bandwidth (-3 dB) Operation: A - 4 MHz (typ.) for 2.1 k device V DD Power-Up and Description Brown-Out V SS Control The MCP4021/2/3/4 devices are non-volatile, 6-bit digital potentiometers that can be configured as either a potentiometer or rheostat. The wiper setting is 2-Wire controlled through a simple Up/Down (U/D) serial Interface W CS interface. and U/D Control These devices implement Microchips WiperLock tech- Logic nology, which allows application-specific calibration settings to be secured in the EEPROM without requiring the use of an additional write-protect pin. EEPROM and WiperLock Technology B Device Features Resistance (typical) V DD Wiper Memory of Control WiperLock Device Operating Configuration Type Steps Interface Technology Options (k)Wiper () Range (1) MCP4021 Potentiometer EE 2.1, 5.0, 10.0, 50.0 75 64 2.7V - 5.5V U/D Yes MCP4022 Rheostat EE 2.1, 5.0, 10.0, 50.0 75 64 2.7V- 5.5V U/D Yes MCP4023 Potentiometer EE 2.1, 5.0, 10.0, 50.0 75 64 2.7V - 5.5V U/D Yes MCP4024 Rheostat EE 2.1, 5.0, 10.0, 50.0 75 64 2.7V - 5.5V U/D Yes Note 1: Floating either terminal (A or B) allows the device to be used in Rheostat mode 2006 Microchip Technology Inc. DS21945E-page 1 Wiper Register (Resistor Array)MCP4021/2/3/4 Notice: Stresses above those listed under Maximum 1.0 ELECTRICAL Ratings may cause permanent damage to the device. This is CHARACTERISTICS a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. Absolute Maximum Ratings Exposure to maximum rating conditions for extended periods V ............................................................................................................. 6.5V may affect device reliability. DD CS and U/D inputs w.r.t V -0.3V to 12.5V SS.................................... A, B and W terminals w.r.t V -0.3V to V + 0.3V SS.................... DD Current at Input Pins ..................................................10 mA Current at Supply Pins ...............................................10 mA Current at Potentiometer Pins ...................................2.5 mA Storage temperature .....................................-65C to +150C Ambient temp. with power applied ................-55C to +125C ESD protection on all pins ........... 4kV (HBM), 400V (MM) Maximum Junction Temperature (T )..........................+150C J AC/DC CHARACTERISTICS Electrical Specifications: Unless otherwise indicated, all parameters apply across the specified operating ranges. T = -40C to +125C, 2.1 k, 5k, 10 k and 50 k devices. Typical specifications represent values for V = 5.5V, V = 0V, A DD SS T = +25C. A Parameters Sym Min Typ Max Units Conditions Operating Voltage Range V 2.7 5.5 V DD CS Input Voltage V V 12.5 V The CS pin will be at one of three CS SS input levels (V , V or V ). IL IH IHH (Note 6) Supply Current I 45 A 5.5V, CS = V , f = 1 MHz DD SS U/D 15 A 2.7V, CS = V , f = 1 MHz SS U/D 0.3 1 A Serial Interface Inactive (CS = V , U/D = V ) IH IH 0.6 3 mA EE Write cycle, T = +25C A Resistance R 1.68 2.1 2.52 k -202 devices (Note 1) AB ( 20%) 4.0 5 6.0 k -502 devices (Note 1) 8.0 10 12.0 k -103 devices (Note 1) 40.0 50 60.0 k -503 devices (Note 1) Resolution N 64 Taps No Missing Codes R / 63 Step Resistance R Note 6 AB S Note 1: Resistance is defined as the resistance between terminal A to terminal B. 2: INL and DNL are measured at V with V = V and V = V . (-202 devices V = 4V). W A DD B SS A 3: MCP4021/23 only, test conditions are: I = 1.9 mA, code = 00h. W 4: MCP4022/24 only, test conditions are: Current at Voltage Comments Device Resistance 5.5V 2.7V 2.1 k 2.25 mA 1.1 mA MCP4022 includes V WZSE MCP4024 includes V WFSE 5k 1.4 mA 450 A 10 k 450 A 210 A 50 k 90 A 40 A 5: Resistor terminals A, W and Bs polarity with respect to each other is not restricted. 6: This specification by design 7: Non-linearity is affected by wiper resistance (R ), which changes significantly over voltage and temperature. See W Section 6.0 Resistor for additional information. 8: The MCP4021 is externally connected to match the configurations of the MCP4022 and MCP4024, and then tested. DS21945E-page 2 2006 Microchip Technology Inc.