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MCP2036 bảng dữ liệu(PDF) 5 Page - Microchip Technology |
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MCP2036 bảng dữ liệu(HTML) 5 Page - Microchip Technology |
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5 / 30 page  © 2009 Microchip Technology Inc. DS22186B-page 5 MCP2036 2.0 PIN DESCRIPTION Descriptions of the pins are listed in Table 2-1. TABLE 2-1: PIN FUNCTION TABLE 2.1 Chip Select (CS) The circuit is fully enabled when a logic-low is applied to the CS input. The circuit enters in Low-Power mode when a logic-high is applied to this input. During Low-Power mode, the detector output voltage falls to VREF and the supply current is reduced to 0.5 μA (typ.). This pin has an internal pull-up resistor to ensure proper selection of the circuit. 2.2 Voltage Reference (VREF) VREF is a mid-scale reference output. It can source and sink small currents and has low output impedance. A load capacitor between 100nF and 1μF needs to be located close to this pin. 2.3 Power Supply (VDD, VSS) The VDD pin is the power supply pin for the analog and digital circuitry within the MCP2036. This pin requires an appropriate bypass capacitor of 100nF. The voltage on this pin should be maintained in the 2.7V-5.5V range for specified operation. The VSS pin is the ground pin and the current return path for both analog and digital circuitry of the MCP2036. If an analog ground plane is available, it is recommended that this device be tied to the analog ground plane of the PCB. 2.4 Inductor Inputs (LREF, LBTN) These pins are inputs for the external coils (reference and sensor). The inputs should be AC coupled to the coils by a 10nF ceramic capacitor. 2.5 Input Selection (REFSEL) Digital input that is used to select between coil inputs (reference and sensor). 2.6 Clock (CLK) The external clock input is used for synchronous detection of the AC waveforms on the coils. The clock signal is also used to generate a triangular waveform applied to coil driver input. 2.7 Inductor Driver Input (DRVIN) The analog input to the coil driver. The triangular waveform applied to this input should be in phase with the clock signal for best performance. 2.8 Inductor Driver Output (DRVOUT) Driver output used to excite the sensor coils. It is a current-mode output designed to drive small inductive loads. Pad Name Pin Number I/O Type Description 14 Pins 16 Pins VREF 1 16 OUT AN Voltage Reference LREF 2 1 IN AN Reference Inductor Input LBTN 3 2 IN AN Active Inductor Input VDD 4 3 PWR AN Power Supply DRVOUT 5 4 OUT AN Current Driver Output for Inductors DRVIN 6 5 IN AN Current Driver Input CLK 7 6 IN CMOS Clock Signal REFSEL 8 7 IN CMOS Detector Select Input CS 9 8 IN CMOS Chip Select, Active low Reserved 10 9 — — Must be tied to GND for proper operation. VSS 11 10 PWR AN Power Supply Return VDETOUT 12 11 OUT AN Detector Output Voltage VDET- 13 12 IN AN Negative Input for Output Detector VDET+ 14 13 IN AN Positive Input for Output Detector NC 14 — — No connect NC 15 — — No connect |
Số phần tương tự - MCP2036 |
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Mô tả tương tự - MCP2036 |
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