PCF8591T/2 – Integrated Circuit – NXP Semiconductors

Real Time Clock PCF8591T/SO16//2/REEL 13 Q1/T1 *STANDARD MARK SMD

PCF8591T/2 – 4-Channel 8-Bit ADC & 1-Channel 8-Bit DAC with I²C Interface – NXP Semiconductors

Simplify analog signal conversion with the NXP PCF8591T/2 integrated circuit. This versatile mixed-signal IC combines a 4-channel 8-bit ADC and a single-channel 8-bit DAC with an I²C-bus interface, providing a compact solution for low-voltage sensor data acquisition and control applications. Designed for efficiency, it reduces component count while offering reliable performance in industrial and embedded systems.

Key Features

• 8-bit Resolution for both ADC and DAC operations
• 4 Analog Inputs configurable as single-ended or differential
• 1 Analog Output with voltage follower buffer
• I²C Serial Interface (up to 100 kHz) for simplified microcontroller communication
• Wide Voltage Range: 2.5V to 6V operation
• Low Power Consumption ideal for battery-powered devices

Technical Details

The PCF8591T/2 integrates successive approximation ADC conversion with auto-incremented channel selection, plus a multiplying DAC with analog output buffer. It supports programmable I²C slave addressing (3 hardware address pins) and operates across an industrial temperature range of -40°C to +85°C. The monolithic CMOS design ensures stable performance in noisy environments.

Common Applications

• Industrial sensor interfaces (temperature, pressure, light)
• Battery management systems
• Consumer electronics control circuits
• Embedded system data acquisition modules
• Automotive accessory subsystems

About NXP Semiconductors

NXP Semiconductors is a global leader in mixed-signal and analog solutions, renowned for innovation in secure connectivity and edge processing. With decades of industry expertise, NXP consistently delivers high-reliability components for automotive, industrial, and IoT applications.

The company’s rigorous quality control and adherence to international standards ensure components like the PCF8591T/2 meet demanding performance requirements. NXP’s commitment to technological advancement makes them a trusted partner for critical electronic designs worldwide.

About Integrated Circuits (ICs)

Integrated Circuits form the backbone of modern electronics by miniaturizing complex circuits onto single semiconductor chips. They enable advanced functionality in compact designs while improving reliability and reducing power consumption compared to discrete components.

Mixed-signal ICs like the PCF8591T/2 bridge analog and digital domains, essential for real-world data processing. Their versatility supports innovations across automation, medical devices, and smart systems where efficient signal conversion is critical.

Packaging Options

Available in industry-standard Tape & Reel (TR) packaging for automated assembly. Contact PCX for reel quantities or custom packaging needs.

FAQs

Question: What is the maximum sampling rate of the ADC?
Answer: The ADC conversion time is approximately 100 µs per channel at 100 kHz I²C clock speed.

Question: Does the DAC require an external reference voltage?
Answer: Yes, both ADC and DAC use the same external V_REF pin (2.5V–6V range).

Question: How many I²C addresses are possible?
Answer: Three hardware address pins allow up to eight unique device addresses on one bus.

Question: Is this IC RoHS compliant?
Answer: Yes, the PCF8591T/2 meets current RoHS 3 standards.

Question: Can it handle negative voltage inputs?
Answer: Inputs must remain within the GND to V_DD range. Differential mode supports pseudo-negative readings.

Question: What’s the typical power consumption?
Answer: Active current is 250 µA (typical) at 5V, dropping to 10 µA in standby mode.

Note: Product images are representational. Refer to the datasheet for exact specifications.

Order Today for Fast Delivery!

Leverage PCX’s guaranteed genuine components, 24-hour shipping, and expert technical support. Secure your NXP PCF8591T/2 ICs now to keep your project on schedule!