LM1111CN Voltage Comparator IC DIP-16

Description

LM1111CN Voltage Comparator IC DIP-16 The LM1111CN Voltage Comparator IC is a precision analog comparator designed to compare two input voltages and produce a digital output indicating which input is higher. Comparator ICs such as the LM111 series are widely used in electronic circuits for threshold detection, signal conditioning, and analog-to-digital interface applications. This device compares a reference voltage applied to one input with an analog signal applied to the other input. When the input voltage exceeds the reference threshold, the output switches state, enabling reliable detection of voltage changes in monitoring and control systems. Features: Precision voltage comparator for analog signal comparison. Low input bias current for improved measurement accuracy. Wide operating supply voltage range. Compatible with TTL, RTL, DTL, and MOS logic families. Specifications: Parameter Value Part Number LM1111CN Manufacturer National Semiconductor Function Dolby B Noise Reduction Processor Package Type DIP-16 Mounting Type Through Hole Supply Voltage 8VDC-16VDC (typical 12VDC) Operating Temperature 0°C-70°C Pin Configuration: Pin Number Pin Name Function/Description 1 VARIABLE IMPEDANCE INPUT Variable impedance input 2 AMPLIFIER B INPUT Amplifier B input 3 AMPLIFIER B OUTPUT Amplifier B output 4 BIAS Bias 5 AMPLIFIER A INPUT Amplifier A input 6 AMPLIFIER A OUTPUT Amplifier A output 7 AMPLIFIER EK OUTPUT Amplifier EK output 8 DECOUPLING Decoupling 9 GROUND Ground 10 AMPLIFIER D FEEDBACK DECOUPLING Amplifier D feedback decoupling 11 AMPLIFIER D OUTPUT Amplifier D output 12 RECTIFIER INPUT Rectifier input 13 RECTIFIER BIAS Rectifier bias 14 RECTIFIER OUTPUT Rectifier output 15 VARIABLE IMPEDANCE CONTROL Variable impedance control 16 POSITIVE SUPPLY Positive supply Applications: Vintage cassette tape deck repair and restoration. Analog audio recording and playback equipment servicing. Dolby B noise reduction circuits in consumer and professional hi-fi systems. Maintenance of 1970s–1980s cassette recorders and reel-to-reel tape machines. Package Include: 1x LM1111CN Voltage Comparator IC DIP-16 Datasheet: LM1111CN Note: This datasheet is NOT for the exact LM1111CN model but for the improved LM1112 version; however, the LM1112 is fully pin-compatible and serves as the official reference datasheet for the LM1111CN.

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