LTC2483CDD#PBF

LTC2483CDD#PBF is a 16bit plus sign No Latency ∆∑™ analogue-to-digital converter with patented easy drive technology and I²C digital interface. The patented sampling scheme eliminates dynamic input current errors and the short comings of on-chip buffering through automatic cancellation of differential input current. This allows large external source impedances and input signals, with rail-to rail input range to be directly digitized while maintaining exceptional DC accuracy. It allows a wide common mode input range (0V to VCC) independent of the reference voltage. The reference can be as low as 100mV or can be tied directly to VCC. The noise level is 600nVRMS independent of VREF. This allows direct digitization of low-level signals with 16bit accuracy. Applications include direct sensor digitizers, weight scales, direct temperature measurement, strain gauge transducers, instrumentation, industrial process control, DVMs and meters.

• Easy Drive™ technology enables rail-to-rail inputs with zero differential input current
• Directly digitizes high impedance sensors with full accuracy, six address available
• GND to VCC input/reference common mode range, 2-wire I²C Interface
• No latency: digital filter settles in a single cycle, internal oscillator
• Single supply operation range from 2.7V to 5.5V
• Integral nonlinearity is 2ppm of VREF typ at (5V ≤ VCC ≤ 5.5V, VREF = 5V, VIN(CM) = 2.5V)
• Offset error is 2.5µV max at (2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC)
• Output noise is 0.6µVRMS typical at (5V ≤ VCC ≤ 5.5V, VREF = 5V, GND ≤ IN– = IN+ ≤ VCC)
• Supply current (conversion mode) is 160µA typical at (TA = 25°C)
• Operating temperature range from 0°C to 70°C, 10-lead plastic DFN package

注释

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