LTC2955

RECOMMENDED FOR NEW DESIGNS

Pushbutton On/Off Controller with Automatic Turn-On

Part Models
16
1ku List Price
Starting From $2.39

Part Details

  • Automatic Turn-On Via Voltage Monitor Input
  • Wide Input Supply Range: 1.5V to 36V
  • Low Supply Current: 1.2μA
  • ±25kV ESD HBM on PB Input
  • ±36V Wide Input Voltage for PB Input
  • Low Leakage EN Output Allows DC/DC Converter Control (LTC2955-1)
  • High Voltage EN Output Drives External P-Channel MOSFET (LTC2955-2)
  • Simple Interface Allows Graceful μP Shutdown
  • Adjustable Turn-Off Timer
  • 10-Lead 3mm × 2mm DFN and 8-Lead ThinSOT Packages
LTC2955
Pushbutton On/Off Controller with Automatic Turn-On
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Documentation

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Hardware Ecosystem

Parts Product Life Cycle Description
Battery Fuel Gauge and Coulomb Counter 1
LTC2942-1 Obsolete 1A Battery Gas Gauge with Internal Sense Resistor and Temperature/Voltage Measurement
Dual-Supply Monitors 1
LTC2960 RECOMMENDED FOR NEW DESIGNS 36V Nano-Current Two-Input Voltage Monitor
PowerPath, Ideal Diodes, and Load Switches 1
LTC4412HV RECOMMENDED FOR NEW DESIGNS 36V, Low Loss PowerPath Controller in ThinSOT
TimerBlox 1
LTC6991 PRODUCTION TimerBlox: Resettable, Low Frequency Oscillator
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Tools & Simulations

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.


Evaluation Kits

eval board
AD-SYNCHRONA14-EBZ

Multichannel System Clocking Device

Features and Benefits

Processing System

  • Raspberry Pi 4, ARM Cortex-A72, 2GB SDRAM

User Interfaces

  • Gigabit Ethernet
  • 2 × USB 3.0 ports
  • 2 × USB 2.0 ports
  • SPI interface
  • GPIO
  • 2 bicolor LEDs
  • Male pin header

Clock Processing Devices

  • HMC7044 (High Performance, 3.2 GHz, 14-Output Jitter Attenuator)
  • AD9545 (1 PPS Synchronizer and Adaptive Clock Translator)

Clock Outputs

  • 4 x TWINAX LVPECL AC&DC coupled, 100Ω diff
  • 2 x SMA LVPECL AC coupled*
  • 4 x SMA CMOS*
  • 4 x SMA LVDS AC coupled*

*Configurable differential outputs, 50Ω diff

Clock Inputs

  • 3 differential 100Ω SMA clock inputs
  • PPS input
  • SYNC input
  • 10MHz input

Internal references

  • 100Mhz and 122.88Mhz Ultra-Low Phase Noise VCXO's (-165dBc/Hz)
  • 40Mhz and 38.4Mhz TCXO's (±1ppm) 50MHz OCXO(+/- 10ppb)
  • Internal references are software configurable

Power supply

  • DC 12V, 3A barrel jack

Product Details

The AD-SYNCHRONA14-EBZ is an ideal self-contained device to use in evaluation and prototyping of applications that need a highly accurate frequency and phase-controlled source clock. It is designed around the Analog Devices AD9545 and HMC7044 and greatly simplifies clock distribution and multi-channel synchronization in complex systems. It is intended to be used by trained professionals in a laboratory environment, and not intended as an end product for commercial use. It can be taken as a complete reference design and customised as required for any end customer applications. Full design details are made available free of charge.

The AD-SYNCHRONA14-EBZ comes in a 1U mechanical form factor. Using popular industry connector SMA and TwinAX interfaces most labs will already have the needed cables.

With its internal OCXO it can operate in standalone mode or be fed from a choice of external sources, such as 3 separate high speed differential clock inputs, a 10MHz reference and 1PPS. This flexibility combined with the capability to select either of the internal VCXO options of 100MHz or 122.88MHz, gives almost unlimited choice for the frequency of interest and accuracy needed for a wide variety of application areas. 

APPLICATIONS

  • High accuracy reference clock distribution
  • Systems clocked from a single source
  • Clocks derived from 100MHz or 122.88MHz
  • Phased Array Systems, RADAR, EW, SATCOMS, SDR
  • Bench Equipment
  • Remote controlled operation

eval board
DC1836A-B

LTC2955IDDB-2 | Pushbutton On/Off Controller with Automatic Turn On (EN Output)

Product Details

DC1836A-B: Demo Board for the LTC2955 Pushbutton On/Off Controller with Automatic Turn-On.

eval board
DC1836A-A

LTC2955IDDB-1 | Pushbutton On/Off Controller with Automatic Turn On (EN Output)

Product Details

DC1836A-A: Demo Board for the LTC2955 Pushbutton On/Off Controller with Automatic Turn-On.

AD-SYNCHRONA14-EBZ
Multichannel System Clocking Device
DC1836A-B
LTC2955IDDB-2 | Pushbutton On/Off Controller with Automatic Turn On (EN Output)
DC1836A-A
LTC2955IDDB-1 | Pushbutton On/Off Controller with Automatic Turn On (EN Output)

Reference Designs

Portable Radio Reference Design Block Diagram
CN0412 Circuits from the lab

ADRV-PACKRF Robust Portable Radio Design

Features and Benefits

  • Two Complete Radios
    • 2-Tx, 2-Rx, 2-Observation
  • Multiple Power Options
    • Wall Connected, Power over Ethernet, Battery
  • Built in IMU and GPS for tracking
  • Fully configurable and customizable software
CN0412
ADRV-PACKRF Robust Portable Radio Design

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