LTC2486CDE#PBF

LTC®2486 is a 4-channel (2-channel differential), 16bit, NoLatencyDS™ ADCwithEasyDrive™ technology. The patented sampling scheme eliminates dynamic input current errors and the shortcomings of on-chip buffering through automatic cancellation of differential input current. This allows large external source impedances and rail-to rail input signals to be directly digitized while maintaining exceptional DC accuracy. TheLTC2486includesprogrammablegain, a high accuracy temperature sensor, and an integrated oscillator. This device can be configured to measure an external signal (from combinations of 4 analogue input channels operating in single ended or differential modes) or its internal temperature sensor. Any combination of single-ended or differential inputs can be selected and the first conversion after a new channel selection is valid. Application includes direct sensor digitizerm, direct temperature measurement, instrumentation, industrial process control.

• Easy drive technology enables Rail-to-Rail inputs with zero differential input current
• Directly digitizes high impedance sensors with full accuracy
• 600nV RMS noise, programmable gain range from 1 to 256
• Integrated high accuracy temperature sensor
• GND to VCC input/reference common mode range
• 2ppm INL, no missing codes
• Offset error is 0.5µV (typ, 2.5V ≤ VREF ≤ VCC, GND ≤ IN+ = IN– ≤ VCC)
• Positive full-scale error is 32ppm of VREF (max, 2.5V ≤ VREF ≤ VCC, IN+ = 0.75VREF, IN– = 0.25VRE)
• No latency digital filter settles in a single cycle, internal oscillator
• 14lead plastic DFN package, operating temperature range from 0°C to 70°C

Uwagi

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