Semiconductors

Introduction

New Japan Radio Co. Ltd developed Semiconductors products uniquely, the variation and quality products have been described as following:

OP AMP (OPERATIONAL AMPLIFIERS): Operational amplifiers were originally developed to be used in synthesizing mathematical operations in analog computers, hence their name. Because of recent advances in semiconductor technology, they have become available as integrated circuits. They are widely used when a closely controlled amount of gain or some form of signal processing is necessary in an electronic system.

Features:

• Operating Voltage (1.8 to 6.0V)
• Input Full-Swing (V_ICM= 0 to 5.0V, at V+=5V)
• Output Full-Swing (V_OH4.9V/ VOL≦0.1V, at V+=5V, RL=20kΩ)
• Load Drivability (V_OH4.75V/ VOL≦0.25V, at V+=5V, RL=2kΩ)
.
• Offset Voltage (5mV max.)
• Slew Rate (0.4V/μs typ.)
• Low Input Voltage Noise (10nV/√Hz typ.)
• Adequate phase margin (ΦM=75deg. typ., at RL=2kΩ, voltage follower)
• Bipolar Technology
• Package Outline (DIP8, DMP8, EMP8, SSOP8, TVSP8)

COMPARATORS: An electronic circuit that produces an output voltage or current whenever two input levels simultaneously satisfy predetermined amplitude requirements. A comparator circuit may be designed to respond to continuously varying (analog) or discrete (digital) signals and its output may be in the form of signaling pulses which occur at the comparison point or in the form of discrete direct-current (dc) levels.

Features:

• Operating Voltage (+2V to +14V)
• Open Collector Output
• Bipolar Technology
• Package Outline (DIP8/SIP8/DMP8/EMP8/SSOP8/VSP8/TVSP8)

POWER SUPPLY ICs: A power supply (sometimes known as a power supply unit or PSU) is a device or system that supplies electrical or other types of energy to an output load or group of loads. A computer power supply typically generates multiple voltages. For example, 12 volts is used for drives, and either 3.3 or 5 volts is used for the electronic circuitry.

Features:

• High Maximum Input Voltage Up to 35V
• ON/OFF Control (Active High)
• Internal Short Circuit Current Limit
• Internal Over voltage Protection
• Internal Thermal Overload Protection
• Bipolar Technology
• Package Outline (TO252-5)

OPTOELECTRONICS DEVICES: Combining light and electronics technologies. Optoelectronics is the study and application of electronic devices that interact with light, and thus is usually considered a sub-field of photonics. In this context, light often includes invisible forms of radiation such as gamma rays, X-rays, ultraviolet and infrared. Optoelectronic devices are electrical-to-optical or optical-to-electrical transducers, or instruments that use such devices in their operation.

Features:

• Response characteristics (Short tail performance)
• Rise time/Fall time (5ns typ. VR=2.5V λ=780nm/650nm 1-99%)
• Cut off frequency (300MHz typ. λ=780nm/650nm)
• Package outline (COBP 1.8X3.6X1.16mm)

COMMUNICATION ICs: The communication IC like NJM2292 is a narrow band FM IF IC designed for use in cordless telephones and amature radios etc...It contains almost all blocks of the narrow band FM IF system-a mixer an IF amplifier an RSSI and a Quadrature detector for example. It features low supply current to make a sharp reduction of total power consumption possible.

Features:

• Low Operating Voltage (1.8 to 7.0V)
• Low Operating Current (20mA typ. @V+=2.4V)
• Maximum input frequency (100MHz)
• A ceramic discriminator is available
• Bipolar Technology
• Package Outline (SSOP20)

MICROPROCESSOR PERIPHERAL ICs: The microprocessor IC like NJU3711 is an 8-bit serial to parallel converter especially applying to MPU out port expander. The effective out port assignment of MPU is available as the connection between NJU3711 and MPU using only 4 lines. The hysteresis input circuit realizes wide noise margin and the high drive-ability output buffer (25mA) can drive LED directly.

Features:

• 8-Bit Serial In Parallel Out
• Hysteresis Input (0.5V typ)
• Operating Voltage (5V±10%)
• Maximum Operating Frequency (5MHz and more)
• Output Current (25mA)
• C-MOS Technology
• Package Outline (DIP14/DMP14/SSOP14)

QUARTZ CRYSTAL OSCILLATOR ICs: The Quartz crystal IC like NJU6311 is a fundamental quartz crystal oscillator, up to 50MHz. The oscillation amplifier incorporates feedback resistor and capacitors (Cg, Cd), therefore, it requires no external component expect quartz crystal, and realizes very low standby current with NAND circuit. Thus it can drive C-MOS load. Furthermore, the package is Thin-VSP10.

Features:

• Operating Voltage (2.0 to 5.5V)
• Maximum Oscillation Frequency (50MHz)
• Low Operating Current
• Oscillation Stop and Output Stand-by Function
• 3-State Output Buffer
• Oscillation Capacitors Cg and Cg on-chip
• C-MOS Technology
• Package Outline (Thin-Chip/TVSP10)

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