LTC1850CFW#TRPBF

Analog To Digital Converters (ADC) Overview

The LTC1850CFW#TRPBF is an 8-channel, 10-bit successive approximation analog-to-digital converter (ADC) operating at a sampling rate of 1.25Msps. It integrates a flexible multiplexer, sample-and-hold circuit, internal 2.5V reference, and parallel output interface. The device supports single-ended or differential inputs with unipolar or bipolar operation across two gain ranges. Powered by a single 5V supply, it typically consumes 40mW. Digital outputs are powered from a separate OVDD supply, enabling direct interfacing with 3V logic. The component is housed in a 48-lead plastic TSSOP package.

Analog To Digital Converters (ADC) Feature Summary

• 8-Channel Multiplexer: Supports configurable single-ended or differential inputs with programmable sequencer for up to 16 addresses.
• High-Speed Conversion: 1.25Msps sampling rate with SAR architecture and integrated sample-and-hold.
• Integrated Reference: Internal 2.5V reference with buffer amplifier providing pin-strappable spans of 4.096V, 2.5V, or 2.048V.
• Flexible Logic Interface: Parallel data output includes conversion result and MUX address; OVDD allows 3V logic compatibility.

Analog To Digital Converters (ADC) Applications

• Test and Measurement
• Imaging Systems
• Telecommunications
• Industrial Process Control
• Spectrum Analysis

Analog To Digital Converters (ADC) Procurement Notes

Verify the #TRPBF suffix indicates tape-and-reel packaging when sourcing. Confirm the 'C' grade designation corresponds to the commercial temperature range of 0°C to 70°C. Ensure the specific lot date code meets project requirements as manufacturing dates vary. Cross-reference the manufacturer part number with authorized distributors to confirm current availability status.

Analog To Digital Converters (ADC) Selection Notes

Select this model over the LTC1851 if 10-bit resolution is sufficient for the application, as both share identical pinouts and functionality. Verify that the required input span matches the internal reference capabilities or external REFCOMP drive options. Ensure the system power budget accommodates the typical 40mW consumption at maximum sampling rates. Check that the parallel interface timing aligns with the host controller's read/write cycle requirements.

Analog To Digital Converters (ADC) Part Context

This component belongs to the LTC1850/LTC1851 family of complete data acquisition systems. The LTC1850 variant provides 10-bit resolution, while the LTC1851 offers 12-bit resolution. Both devices share the same 48-lead TSSOP footprint and control logic, allowing for design flexibility between resolution and cost. The CF designation specifies the commercial temperature range and standard plastic packaging.

Analog To Digital Converters (ADC) Replacement Considerations

The LTC1851CFW#TRPBF is a pin-compatible alternative offering 12-bit resolution instead of 10-bit. Other members of the LTC185x family may serve as substitutes if resolution differences are acceptable. Verify that any replacement maintains the 1.25Msps speed and 48-lead TSSOP form factor.