Analog Devices Inc. LTC6993IDCB-1#TRPBF

Overview

LTC6993IDCB-1#TRPBF from Analog Devices is a TimerBlox monostable multivibrator (one-shot pulse generator) with programmable pulse width from 1µs to 33.6 seconds, rising-edge non-retriggerable trigger input, and CMOS output sourcing/sinking 20mA. It operates from 2.25V to 5.5V, consumes 70µA at 10µs pulse width, and targets precision timing in industrial control, watchdog circuits, and envelope detection.

For engineers reviewing the LTC6993IDCB-1#TRPBF datasheet, LTC6993IDCB-1#TRPBF pinout, LTC6993IDCB-1#TRPBF application, or LTC6993IDCB-1#TRPBF equivalent, key selection criteria include its fixed rising-edge/non-retriggerable behavior, ±2.3% pulse width accuracy for widths >512µs, 6-lead DFN package, –40°C to 85°C temperature grade, and dynamic pulse width adjustment via control voltage on the SET pin.

Technical Context

The LTC6993IDCB-1#TRPBF implements a master oscillator with 1µs base period, programmable via ISET current sourced from the SET pin (1.25µA–20µA), and an internal 4-bit A/D converter on the DIV pin that selects NDIV values (1, 8, 64, ..., 2²¹) and output polarity. Its trigger logic latches on rising edges only and ignores subsequent triggers until pulse completion plus tARM recovery time (–4ns).

It features a regulated 1V SET pin reference (±30mV), hysteresis on TRIG (VTRIG_RISING ≈ 0.55·V+ + 185mV), and a CMOS output driver with 30Ω typical output resistance. Pulse width drift is ±0.006%/°C for NDIV ≥ 512 and supply sensitivity is ≤ ±0.9% over V+ = 2.25V–5.5V.

Key Specifications

Pinout & Package

Package: 6-lead plastic DFN (2mm × 3mm), exposed pad connected to GND. Pin numbering follows standard DCB top view: Pin 1 = TRIG, Pin 2 = GND, Pin 3 = SET, Pin 4 = DIV, Pin 5 = V+, Pin 6 = OUT.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar monostable timing applications.

Compared with LTC6993IDCB-2#TRPBF and LTC6993IS6-1#TRPBF, the LTC6993IDCB-1#TRPBF provides optimal trade-off of non-retriggerable timing integrity, thermal performance in DFN, and industrial temperature range-making it ideal for safety-critical watchdog and missing-pulse detection where deterministic single-shot behavior is mandatory.

Availability

LTC6993IDCB-1#TRPBF is available at Aetrix Electronics and suitable for industrial watchdog timers, envelope detection circuits, missing pulse detection systems, and high-vibration timing references requiring stable component supply across extended temperature ranges.

Supply support for LTC6993IDCB-1#TRPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The TimerBlox family-including LTC6993IDCB-1#TRPBF-is designed for precision silicon timing applications where programmability, low power, and deterministic monostable behavior replace traditional RC-based or microcontroller-dependent solutions.

FAQ

What is the trigger input behavior of the LTC6993IDCB-1#TRPBF?

The LTC6993IDCB-1#TRPBF accepts only rising-edge transitions on its TRIG pin to initiate the output pulse and is non-retriggerable-meaning subsequent rising edges during an active output pulse are ignored until the pulse completes and the short tARM recovery time (–4ns) expires. This ensures strict one-shot behavior critical for watchdog and missing-pulse detection applications.

How is pulse width programmed on the LTC6993IDCB-1#TRPBF?

Pulse width on the LTC6993IDCB-1#TRPBF is set by two independent controls: (1) a resistor (RSET) between SET and GND determines the master oscillator period (tMASTER = 1µs × RSET/50kΩ), and (2) the DIV pin voltage selects NDIV (1 to 2²¹) and output polarity. Final pulse width is tOUT = NDIV × tMASTER, enabling 1µs–33.6s coverage with ±2.3% accuracy for tOUT > 512µs.

What package and thermal characteristics does the LTC6993IDCB-1#TRPBF have?

The LTC6993IDCB-1#TRPBF uses a 6-lead (2mm × 3mm) plastic DFN package with exposed pad connected to GND. Its thermal resistance is θJA = 64°C/W and θJC = 10.6°C/W, enabling efficient heat dissipation in compact industrial layouts. The –40°C to 85°C operating range and 150°C junction limit support reliable operation in demanding environments.

Can the LTC6993IDCB-1#TRPBF generate negative output pulses?

Yes, the LTC6993IDCB-1#TRPBF can generate negative output pulses by configuring the DIV pin voltage to select a DIVCODE where the POL bit = 1 (e.g., DIVCODE = 8–15). This inverts the output polarity so OUT swings from V+ to GND instead of GND to V+, enabling direct interface with inverted logic or active-low reset circuits without external inverters.

What is the minimum supply voltage and quiescent current of the LTC6993IDCB-1#TRPBF?

The LTC6993IDCB-1#TRPBF operates down to 2.25V and draws as little as 70µA supply current at 10µs pulse width (V+ = 2.25V, RSET = 800kΩ, NDIV ≤ 64). This ultra-low idle current makes it suitable for battery-powered instrumentation and always-on monitoring systems where energy efficiency is critical.