Analog Devices Inc. LTC6995MPS6-1#TRPBF

Overview

LTC6995MPS6-1#TRPBF from Analog Devices is a silicon-based programmable low-frequency oscillator IC in the TimerBlox® family, designed for long-duration timing events. It delivers 1.024ms–9.54h output periods (29.1µHz–977Hz), ±1.5% max frequency accuracy over –55°C to 125°C, and operates from 2.25V–5.5V supply. Used in automotive-grade watchdog timers and power-on reset circuits requiring AEC-Q100 qualified stability.

For engineers reviewing the LTC6995MPS6-1#TRPBF datasheet, LTC6995MPS6-1#TRPBF pinout, LTC6995MPS6-1#TRPBF application, or LTC6995MPS6-1#TRPBF equivalent, key selection criteria include its TSOT-23-6 package, active-high RST input, programmable NDIV divider (1–221), 50% duty cycle CMOS output, and guaranteed operation across –55°C to 125°C.

Technical Context

The LTC6995MPS6-1#TRPBF implements a master oscillator (1MHz max) controlled by SET pin current (ISET = VSET/RSET), followed by a fixed ÷1024 divider and an 8-step programmable divider (NDIV = 1, 8, 64, 512, 4096, 2¹⁵, 2¹⁸, 2²¹). Its internal 4-bit A/D converter reads DIV pin voltage to set both NDIV and output polarity (POL bit).

Reset behavior is version-specific: LTC6995-1 (this part) uses active-high RST to halt oscillation and clear dividers, with start-up initiating a full half-cycle delay before first edge. Output state during reset is determined solely by the programmed POL bit, not by RST logic level alone.

Key Specifications

Pinout & Package

Package: 6-lead TSOT-23 (ThinSOT™), 1mm profile, lead-free, RoHS-compliant. Exposed pad optional for thermal relief.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable oscillator applications.

Compared with LTC6995MPS6-2#TRPBF, the LTC6995MPS6-1#TRPBF provides identical long-timer capability with active-high reset compatibility; versus LTC6995HDCB-1#TRPBF, it trades thermal performance for space-constrained TSOT-23 integration-critical for compact automotive modules.

Availability

LTC6995MPS6-1#TRPBF is available at Aetrix Electronics and suitable for automotive power-on reset, industrial watchdog timer, and battery-powered long-interval wake-up applications requiring stable component supply across extended temperature ranges.

Supply support for LTC6995MPS6-1#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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The LTC6995MPS6-1#TRPBF belongs to the TimerBlox® family-designed specifically for replacing bulky, drift-prone RC timers and crystals in long-duration, low-frequency timing applications where precision, reliability, and small size are essential.

FAQ

What is the operating temperature range of the LTC6995MPS6-1#TRPBF?

The LTC6995MPS6-1#TRPBF is rated for –55°C to 125°C operation and is AEC-Q100 qualified as a Grade MP device. This specification is guaranteed across the full range-not just characterized-and applies to all electrical parameters including frequency accuracy, supply current, and reset timing. The part uses internal thermal compensation to maintain ±0.005%/°C frequency drift, making it suitable for under-hood automotive and industrial control applications.

How do I program the output period of the LTC6995MPS6-1#TRPBF?

To program the output period of the LTC6995MPS6-1#TRPBF, connect a precision resistor RSET between the SET pin and GND. Use RSET = (50kΩ / NDIV) × (tOUT / 1.024ms), selecting NDIV from Table 1 based on desired tOUT and polarity. For example, for tOUT = 1s and NDIV = 64, RSET ≈ 768kΩ. The LTC6995MPS6-1#TRPBF then generates tOUT = NDIV × RSET / 50kΩ × 1.024ms with ±1.5% accuracy over temperature.

Does the LTC6995MPS6-1#TRPBF require external components for basic operation?

The LTC6995MPS6-1#TRPBF requires only two external components for basic operation: a resistor RSET (50kΩ–800kΩ) from SET to GND to set frequency, and a 0.1µF ceramic capacitor from V+ to GND for supply decoupling. No crystal, trimmer capacitor, or external oscillator is needed. The DIV pin may be driven by a simple resistor divider (two 1% resistors) or left unconnected if default NDIV = 1 and POL = 0 are acceptable.

What is the reset behavior of the LTC6995MPS6-1#TRPBF during power-up?

At power-up, the LTC6995MPS6-1#TRPBF asserts internal POR and holds OUT low for tSTART (≤8ms). After tSTART, OUT begins oscillating only if RST is low (inactive). If RST is high (active) at end of start-up, OUT remains in its reset state (low for POL = 0, high for POL = 1) until RST is de-asserted-then it starts with a precise half-period delay before the first edge. This behavior is deterministic and independent of NDIV setting.

Can the LTC6995MPS6-1#TRPBF generate non-50% duty cycle outputs?

No-the LTC6995MPS6-1#TRPBF always produces a 50% duty cycle square wave output. Its architecture uses a master oscillator followed by integer dividers (÷1024 and programmable NDIV), which inherently preserve symmetry. Duty cycle variation is limited to ±0.5% over temperature and supply voltage per characterization data. For variable duty cycle generation, a separate logic gate or microcontroller-based solution is required.