HA Quadruple Comparators. Description. The HA and HA series products are comparators designed for use in power or control systems. HA Datasheet PDF Download – Quadruple Comparators, HA data sheet. HA from Hitachi, Ltd.. Find the PDF Datasheet, Specifications and Distributor Information.

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The HA and HA series products are comparators designed for use in power or control systems.

These IC operate from a single power-supply voltage over a wide range of voltages, and feature a reduced power-supply current since the power-supply voltage is determined independently. These comparators have the unique characteristic of ground being included in the common-mode input voltage range, even when operating from a single-voltage power supply.

Wide power-supply voltage range: Extremely low current drain: Low input bias current: Low input offset current: Low input offset voltage: The common-mode input voltage range includes ground. Low output saturation voltage: A70mV 1mA. Output voltages compatible with CMOS logic systems. C above that temperature. These products can be destroyed if the output and V. Electrical Characteristics 1 V. The stipulated response time is the value for a mV input step voltage that has a 5mV.

Electrical Characteristics 2 V. Input offset voltage V. Output saturation voltage V. Switched between 1 and 2. Input Bias Current I. Input Bias Current vs. Output Sink Current Iosink mA. Output Sink Current vs. The HA houses four independent comparators in a single package, and operates over a wide voltage range at low power from a single-voltage power supply.

HA (Hitachi) – Quadruple Comparators | eet

Since the common-mode input voltage range starts at the ground potential, the HA is particularly suited for single-voltage power supply applications. This section presents several sample HA applications. The circuit shown in figure one has the same structure as datasheeg single-voltage power supply astable multivibrator. Figure 2 shows the waveforms generated by this circuit. Figure 1 Square-Wave Oscillator. Figure 2 Operating Waveforms.


The charge and discharge circuits in the circuit from figure 1 darasheet separated by diodes in this circuit. This allows the pulse width and the duty cycle to be set independently. Figure 4 shows the waveforms generated by this circuit. Figure 3 Pulse Generator. Datahseet 4 Operating Waveforms. In the circuit in figure 5, comparator A. If the output Vout1 is at. The A1 output will integrate this state and its output will increase towards the high level.

When the output of the integrator A. This causes the integrator to integrate a negative state, resulting in its output decreasing towards the low level. Then, when the A. This operation generates a square wave on Vout1 and a triangular wave on Vout2. Frequency control voltage input. Figure 5 Voltage Controlled Oscillator. The circuit shown in figure 6 is a basic comparator. When the input voltage V.

Figure 6 Basic Comparator. Noninverting Comparator with Hysteresis. With the circuit constants shown in figure 7. Figure 8 shows the input characteristics.

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Figure 7 Noninverting Comparator. Output Voltage Vout V. Inverting Comparator with Hysteresis. With the circuit constants shown in figure 9. Figure 9 Inverting Comparator. In this circuit, the noninverting input will essentially beheld at the potential determined by dividing V. Figure 11 Zero-Cross Detector.

DP Conforms Conforms 0. FPDA — Conforms 0. Hitachi neither warrants nor grants licenses of any rights of Hitachi’s or any third party’s patent. Hitachi bears no responsibility for problems that may arise with third party’s rights, including intellectual property rights, in dtasheet with use of the information contained in this document.


Products and product specifications may be subject to change without notice. Confirm that you have. Hitachi makes every attempt to ensure that its products are of high quality and reliability. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly. Hitachi bears no responsibility for failure or damage when used beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable failure rates or failure modes in fatasheet devices and employ systemic measures such as fail- safes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other consequential damage due to operation of the Hitachi product.

This product is not designed to be radiation resistant. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without. Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor.

Datashdet 03 Fax: Copyright ‘ Hitachi, Ltd. Hitachi Asia Hong Kong Ltd. D Feldkirchen, Munich Germany Tel: Hitachi Semiconductor America Inc.

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