LTC1861LIMS#PBF

LTC1861L is a 12bit 1-channel A/D converter. The supply current drops at lower speeds because the LTC1861L automatically power down between conversions. This 12bit switched capacitor successive approximation ADCs include sample-and-holds. This offers a software selectable 2-channel MUX and an external reference pin on the MSOP version. This ADC can be used in ratiometric applications or with external references. The high impedance analogue inputs and the ability to operate with reduced spans down to 1V full scale allow direct connection to signal sources in many applications, eliminating the need for external gain stages. Application includes high speed data acquisition, portable or compact instrumentation, low power battery-operated instrumentation, isolated and/or remote data acquisition.

• Auto shutdown reduces supply current to 10µA at 1ksps
• True differential inputs, SPI/MICROWIRETM compatible serial I/O
• No minimum data transfer rate
• Supply voltage range from 2.7 to 3.6V (TA = 25°C)
• Resolution is 12bits (min, TA = 25°C, VCC = 2.7V, VREF = 2.5V, fSCK = fSCK(MAX))
• Sample rate is 250Ksps, supply voltage range from 2.7 to 3.6V (TA = 25°C)
• Gain error is ±20mV (max, TA = 25°C, VCC = 2.7V, VREF = 2.5V)
• Signal-to-noise ratio is 72dB (typ, TA = 25°C. VCC = 3V, VREF = 3V, fSAMPLE = 150KHz)
• Total harmonic distortion up to 5th harmonic is 86dB (typ, 1KHz input signal)
• 10 lead plastic MSOP, operating temperature range from 0°C to 70°C

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