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CA331922C Supplier, CA331922C on Stock |
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| CA331922C CA331922C PDF These devices provide essential functions such as supply voltage supervision by asserting a reset output during power-up and power-down as well as during brownout conditions. An auxiliary voltage monitor is provided for detecting power failures warning the system of low battery conditions or presence detection. In addition, an independent watchdog timer helps to monitor microprocessor activity every 1.6s (typical). An active-low manual reset is offered and reset signals remain asserted until VDD returns to proper operating levels. CA331922C Datasheet Duty cycle dimming with a fixed current amplitude is accomplished by switching the ISET current on and off with an open collector or open drain pulse width modulated logic signal. Switching frequency can exceed 20 KHz, making it practical to use a PWM output channel from popular micro controllers. The upper limit on frequency is minimum switching response from ISET to output. As frequency increases, these fixed delays will cause an error in expected output current duty cycle. CA331922C Suppliers If the synchronous enable (ES) is being used, the outputs will go to the OFF or high-impedance state upon the next positive clock edge after the synchronous enable input is switched to a HIGH level. If the synchronous enable pin is switched to a logic LOW, the subsequent positive clock edge will return the output to the active state. Following a positive clock edge, the address and synchronous enable inputs are free to change since no change in the output will occur until the next low-to-high transition of the clock. This unique feature allows the CY7C245A decoders and sense amplifiers to access the next location while previously addressed data remains stable on the outputs. FEATURES Four Programmable Temperature Setpoints Programmable Thermal Hysteresis Accuracy 3 C Typ from C40 C to +125 C Temperature Output Scale Factor = 5 mV/K Resistor Programmable Temperature Setpoints 5 mA Open-Collector Setpoint Outputs Internal 2.5 V Reference 600 A Max Quiescent Current at +5 V The PVG612 Series Photovoltaic Relay is a single-pole, normally open solid-state relay that can replace electromechanical relays in many applications. It util- izes International Rectifiers proprietary HEXFET power MOSFET as the output switch, driven by an integrated circuit photovoltaic generator of novel construction. The output switch is controlled by ra- diation from a GaAlAs light emitting diode (LED) which is optically isolated from the photovoltaic generator. These units exceed the performance capabilities of electromechanical relays in operating life, sensitiv- ity, stability of on-resistance, miniaturization, insen- sitivity to magnetic fields and ruggedess. The com- pact PVG612 is particularly suited for isolated switch- ing of high currents from 12 to 48 Volt AC or DC power sources. Series PVG612 Relays are packaged in a 6-pin, molded DIP package with either through-hole or sur- face mount (gull-wing) terminals. It is available in standard plastic shipping tubes or on tape-and-reel. Please refer to Part Identification information opposite. Threshold Current (BOL) Wavelength Wavelength Tuning Coefficient External Efficiency ac Side-mode Suppression Ratio Chromatic Dispersion Penalty (50 km, SMF28, 200 ps/nm) Optical Isolation High-frequency Cutoff (3 dB) Low-frequency Cutoff (3 dB) RF Return Loss, 50 Ω (0.1 GHz8 GHz) Rise/Fall Time, 10%90% Thermoelectric Cooler Current Thermistor Resistance Thermistor Coefficient Monitor Photodiode Current o ∆Ó Stereo ADC - 64x Oversampling - Sample Rate Ranging from 32kHz to 48kHz - S/(N+D): 92dB - Dynamic range, S/N: 100dB - Digital HPF for offset cancellation o ∆Ó Stereo DAC - 128x Oversampling - Sampling Rate Ranging from 32kHz to 48kHz - 2nd order SCF + 2nd order CTF - Digital de-emphasis for 32kHz, 44.1kHz, 48kHz sampling - S/(N+D): 90dB - Dynamic Range, S/N: 100dB - Soft Mute o High Jitter Tolerance o Master Clock: 256fs, 384fs, 512fs o X tal Oscillation circuit o Master/Slave Mode o Analog Power Supply: 4.5 to 5.5V, Digital Power Supply: 3.1 to 5.5V |
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