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LTC1298 12-Bit A/D Converter

  • 604-00001: LTC1298 12-bit Analog to Digital Converter
  • 604-00001: LTC1298 12-bit Analog to Digital Converter Alternate View
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Product ID 604-00001
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Overview

The LTC1298 is a 12-bit analog-to-digital converter (ADC). It is internally referenced to the 5-volt power supply, providing voltage measurements with 1.22-millivolt resolution. It has an internal sample-and-hold feature that prevents errors when it is used to measure rapidly changing signals.

The LTC1298 can be configured as a two-channel ADC or single-channel differential ADC. In two-channel mode, the selected channel’s voltage is measured relative to ground and returned as a value between 0 and 4095. In differential mode, the voltage difference between the two inputs is measured and returned as a value between 0 and 4095. Supply current is typically 250 μA when the unit is operating, 1 nA (one-billionth of an ampere) when it is not. The maximum clock rate for the LTC1298’s three-wire serial interface is 200 kHz, permitting up to 11,100 samples to be taken per second.

Key Features:

  • Configureable as two-channel ADC or single-channel differential ADC
  • Maximum clock rate is 200 kHz, allowing an 11,100/second sample rate

Details

  • 12-Bit resolution (0-4095)
  • Low supply current
  • 60 us conversion time
  • 11.1 ksps sampling rate
  • Voltage requirements: 4.5-9 VDC
  • Current requirements: 250 uA typical with auto shutdown to 1 nA
  • Communication: Synchronous Serial / SPI (3-wire)
  • Package: DIP-8 (.300")
  • Operating temp range: +32 to +158 °F (0 to +70 °C)

Downloads & Documentation

Download Details More Info
LTC1298 Datasheet - 291.85 KB | updated: 04 Oct 2012 - 2:04 pm