LTC1286 - Micropower Sampling 12-Bit A/D Converters In S0-8 Packages

Features

  • 12-Bit Resolution
  • 8-Pin SOIC Plastic Package
  • Low Cost
  • Low Supply Current: 250µA Typ.
  • Auto Shutdown to 1nA Typ.
  • Guaranteed ±3/4LSB Max DNL
  • Single Supply 5V to 9V Operation
  • On-Chip Sample-and-Hold
  • 60µs Conversion Time
  • Sampling Rates:
    12.5 ksps (LTC1286)
    11.1 ksps (LTC1298)
  • I/O Compatible with SPI, Microwire, etc.
  • Differential Inputs (LTC1286)
  • 2-Channel MUX (LTC1298)
  • 3V Versions Available: LTC1285/LTC1288

Typical Application

LTC1286
LTC1286
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Description

The LTC1286/LTC1298 are micropower, 12-bit, successive approximation sampling A/D converters. They typically draw only 250µA of supply current when converting and automatically power down to a typical supply current of 1nA whenever they are not performing conversions. They are packaged in 8-pin SO packages and operate on 5V to 9V supplies. These 12-bit, switched-capacitor, successive approximation ADCs include sample-and-holds. The LTC1286 has a single differential analog input. The LTC1298 offers a software selectable 2-channel MUX. On-chip serial ports allow efficient data transfer to a wide range of microprocessors and microcontrollers over three wires. This, coupled with micropower consumption, makes remote location possible and facilitates transmitting data through isolation barriers. These circuits can be used in ratiometric applications or with an external reference. The high impedance analog inputs and the ability to operate with reduced spans (to 1.5V full scale) allow direct connection to sensors and transducers in many applications, eliminating the need for gain stages.

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Packaging

N-8, SO-8

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Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC1286CN8 PDIP 8 C $6.60 $5.20 View
LTC1286CN8#PBF PDIP 8 C $6.60 $5.20 View
LTC1286CS8 SO 8 C $7.10 $5.60 View
LTC1286CS8#PBF SO 8 C $7.10 $5.60 View
LTC1286CS8#TR SO 8 C   $5.66 View
LTC1286CS8#TRPBF SO 8 C   $5.66 View
LTC1286IN8 PDIP 8 I $8.25 $6.45 View
LTC1286IN8#PBF PDIP 8 I $8.25 $6.45 View
LTC1286IS8 SO 8 I $8.85 $6.95 View
LTC1286IS8#PBF SO 8 I $8.85 $6.95 View
LTC1286IS8#TR SO 8 I   $7.01 View
LTC1286IS8#TRPBF SO 8 I   $7.01 View
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

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Applications

  • Battery-Operated Systems
  • Remote Data Acquisition
  • Battery Monitoring
  • Handheld Terminal Interface
  • Temperature Measurement
  • Isolated Data Acquisition
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Simulate

To simulate selected Linear Technology products, please download LTSpice / SwitcherCAD III. This powerful schematic capture and simulation tool includes macro models for 80% of Linear Technology's switching regulators, over 200 op amp models, as well as resistors, transistors and MOSFET models.

For other simulation tools, visit our Design Simulation and Device Models page.

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