LTC2305 - 2-Channel, 12-Bit ADCs with I2C Compatible Interface

The LTC2301/LTC2305 are low noise, low power, 1-/2-channel, 12-bit successive approximation ADCs with an I2C compatible serial interface. These ADCs include an internal reference and a fully differential sample-andhold circuit to reduce common mode noise. The LTC2301/ LTC2305 operate from an internal clock to achieve a fast 1.3μs conversion time.

The LTC2301/LTC2305 operate from a single 5V supply and draw just 300μA at a throughput rate of 1ksps. The ADC enters nap mode when not converting, reducing the power dissipation.

The LTC2301/LTC2305 are available in small 12-pin 4mm × 3mm DFN and 12-pin MSOP packages. The internal 2.5V reference further reduces PCB board space requirements.

The low power consumption and small size make the LTC2301/LTC2305 ideal for battery operated and portable applications, while the 2-wire I2C compatible serial interface makes these ADCs a good match for space-constrained systems.

Features
  • 12-Bit Resolution
  • Low Power: 1.5mW at 1ksps, 35μW Sleep Mode
  • 14ksps Throughput Rate
  • Internal Reference
  • Low Noise: SNR = 73.5dB
  • Guaranteed No Missing Codes
  • Single 5V Supply
  • 2-wire I2C Compatible Serial Interface with 9 Addresses Plus One Global for Synchronization
  • Fast Conversion Time: 1.3μs
  • 1-Channel (LTC2301) and 2-Channel (LTC2305) Versions
  • Unipolar or Bipolar Input Ranges (Software Selectable)
  • Internal Conversion Clock
  • Guaranteed Operation from –40°C to 125°C (MSOP Package)
  • 12-Pin 4mm × 3mm DFN and 12-Pin MSOP Packages
Typical Application
LTC2305 Typical Application
LTC2305 Typical Application
Applications
  • Industrial Process Control
  • Motor Control
  • Accelerometer Measurements
  • Battery Operated Instruments
  • Isolated and/or Remote Data Acquisition
  • Power Supply Monitoring
Packaging
LTC2305 Package Drawing
LTC2305 Package Drawing
LTC2305 Package Drawing
LTC2305 Package Drawing
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC2305CDE#PBF4x3 DFN-12C$3.00$2.10
LTC2305CDE#TRPBF4x3 DFN-12C$2.16
LTC2305CMS#PBFMS-12C$3.00$2.10
LTC2305CMS#TRPBFMS-12C$2.16
LTC2305HMS#PBFMS-12H$4.31$3.02
LTC2305HMS#TRPBFMS-12H$3.08
LTC2305IDE#PBF4x3 DFN-12I$3.60$2.52
LTC2305IDE#TRPBF4x3 DFN-12I$2.58
LTC2305IMS#PBFMS-12I$3.60$2.52
LTC2305IMS#TRPBFMS-12I$2.58
Demo Boards
Part NumberDescriptionPrice
DC1444A-BLTC2305 Demo Board | 12-bit, 2-ch I2C 14ksps ADC (req DC2026)$50.00
Companion Boards
Part NumberDescriptionPrice
DC2026CLinduino One Isolated USB Demo Board: An Arduino- and QuikEval-Compatible Code Development Platform$75.00
DC590BIsolated USB Serial Controller for Linear Technology QuikEval-Compatible Demo Boards$50.00
Datasheet
Reliability Data
Product Selector Card
Press Release
CAD Symbol
Linduino
Related Products
LTC2301/LTC2305 - 1-/2-Channel, 12-Bit ADCs with I2C Compatible Interface
LTC2301/LTC2305 - 12 位、单通道/双通道 I2C SAR ADC 在高达 +125oC 时性能规格有保证
R461 Reliability Data
General Purpose SAR ADCs
SAR ADC Input Types
12-Bit, 1-/2-Channel I2C SAR ADCs Guaranteed up to +125°C
LTC2305 Footprints and Symbols
LTC2305 - DC1444A Linduino .INO File
LTC2305 - Linduino Header File
LTC2305 - Linduino.CPP File