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GD4015BD Suppliers and GD4015BD Datasheet |
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GD4015BD Datasheet:The reference signal is at 1700 Hz, (the same frequency for BELL 202 and V23). All the incoming signals are compared to this value to make a digital square wave frequency varying in frequency and in phase as a function of the input frequencies.GD4015BD Suppliers:The GD4015BD monitors and precisely controls 4 output voltage levels (Refer to Block and Simplified Power System Diagrams, and Typical Application Schematic). It is designed for microprocessor computer applications with 3.3V, and 5V (5VDUAL) bias input from an ATX power supply. The IC has a synchronous PWM controller and three linear controllers. The PWM controller (PWM) is designed to regulate the 2.5V memory voltage (VOUT1). The PWM controller drives 2 MOSFETs (Q1 and Q2) in a synchronous-rectified buck converter configuration and regulates the output voltage to a level programmed by a resistor divider. The linear controllers are designed to regulate three more of the computer systems voltages, typically the 1.5V AGP bus (VOUT4), the 2.5V clock voltage (VOUT2), and the 1.8V ICH/MCH core voltage (VOUT3). All linear controllers are designed to employ external NPN bipolar pass transistors.GD4015BD On stock:The MAX1280/MAX1281 12-bit ADCs combine an 8-chan- nel analog-input multiplexer, high-bandwidth track/hold, and serial interface with high conversion speed and low power consumption. The MAX1280 operates from a single +4.5V to +5.5V supply; the MAX1281 operates from a sin- gle +2.7V to +3.6V supply. Both devices analog inputs are software configurable for unipolar/bipolar and single- ended/pseudo-differential operation. The 4-wire serial interface connects directly to SPI™/QSPI™/MICROWIRE™ devices without external logic. A serial strobe output allows direct connection to TMS320-family digital signal processors. The MAX1280/ MAX1281 use an external serial-interface clock to per- form successive-approximation analog-to-digital con- versions. Both parts feature an internal +2.5V reference and a reference-buffer amplifier with a 1.5% voltage- adjustment range. An external reference with a 1V to VDD1 range may also be used.Serial data input. The 4-bit serial data selects the desired analog input and test voltage to be converted next in a normal cycle. These bits can also set the conversion rate and enable the power-down mode. When operating in the microprocessor mode, the input data is presented MSB first and is shifted in on the first four rising ((after CS).g (INV CLK = VCC) or falling (g (INV CLK = GND) edges of I/O CLK ()g) When operating in the DSP mode, the input data is presented MSB first and is shifted in on the first four falling (INV CLK = VCC) or rising (INV CLK = GND) edges of I/O CLK (after FS). After the four input data bits have been read into the input data register, DATA IN is ignored for the remainder of the current conversion period. The RFD3N08L and RFD3N08LSM are N-Channel enhancement mode silicon gate power field effect transistors specifically designed for use with logic level (5V) driving sources in applications such as programmable controllers, automotive switching, and solenoid drivers. This performance is accomplished through a special gate oxide design which provides full rated conductance at gate biases in the 3V to 5V range, thereby facilitating true on-off power control directly from logic circuit supply voltages. Low Quiescent Current of 4.0 mA Typical Maximum Operating Voltage of 12 V Low Output Voltage Option High Accuracy Output Voltage of 2.0% Industrial Temperature Range of −40C to 85C (NCV551, TA = −40C to +125C) • NCV Prefix for Automotive and Other Applications Requiring Site and Control Changes • Pb−Free Packages are Available The reference circuit, containing a buried zener, is laser- trimmed for minimum temperature coefficient. The clock oscillator is current-controlled for excellent sta- bility over temperature. Full-scale and offset errors may be externally trimmed to zero. Internal scaling resistors are provided for the selection of analog input signal ranges of 0V to +10V, 0V to +20V, 5V, and 10V. |
