LTC2486 Series

16-Bit 2-/4-Channel ∆Σ ADC with PGA and Easy Drive Input Current Cancellation

Catalog

16-Bit 2-/4-Channel ∆Σ ADC with PGA and Easy Drive Input Current Cancellation

Part	Number of Bits	Sampling Rate (Per Second)	Supplier Device Package	Package / Case	Number of A/D Converters	Voltage - Supply, Digital [Max]	Voltage - Supply, Digital [Min]	Reference Type	Configuration	Voltage - Supply, Analog [Min]	Voltage - Supply, Analog [Max]	Data Interface	Operating Temperature [Max]	Operating Temperature [Min]	Number of Inputs	Input Type	Architecture	Mounting Type	Features
Analog Devices LTC2486IDE#PBF	16	15 Per Second	14-DFN (4x3)	14-WFDFN Exposed Pad	1	5.5 V	2.7 V	External	MUX-ADC	2.7 V	5.5 V	SPI	85 °C	-40 °C	2 4	Differential Single Ended	Sigma-Delta	Surface Mount	Temperature Sensor
Analog Devices LTC2486CDE#TRPBF	16	15 Per Second	14-DFN (4x3)	14-WFDFN Exposed Pad	1	5.5 V	2.7 V	External	MUX-ADC	2.7 V	5.5 V	SPI	70 °C	0 °C	2 4	Differential Single Ended	Sigma-Delta	Surface Mount	Temperature Sensor

Catalog

16-Bit 2-/4-Channel ∆Σ ADC with PGA and Easy Drive Input Current Cancellation

Key Features

• Up to 2 Differential or 4 Single-Ended Inputs

• 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 from 1 to 256

• Integrated High Accuracy Temperature Sensor

• GND to VCCInput/Reference Common Mode Range

• Programmable 50Hz, 60Hz, or Simultaneous 50Hz/60Hz Rejection Mode

• 2ppm INL, No Missing Codes

• 1ppm Offset and 15ppm Full-Scale Error

• 2x Speed Mode/Reduced Power Mode (15Hz Using Internal Oscillator and 80μA at 7.5Hz Output)

• No Latency: Digital Filter Settles in a Single Cycle, Even After a New Channel is Selected

• Single Supply 2.7V to 5.5V Operation (0.8mW)

• Internal Oscillator

• Tiny 4mm × 3mm DFN Package

Description

The LTC2486 is a 4-channel (2-channel differential), 16-bit, No Latency ΔΣ™ADC with Easy Drive™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.The LTC2486 includes programmable gain, a high accuracy temperature sensor, and an integrated oscillator. This device can be configured to measure an external signal (from combinations of 4 analog input channels operating in single ended or differential modes) or its internal temperature sensor. It can be programmed to reject line frequencies of 50Hz, 60Hz, or simultaneous 50Hz/60Hz, provide a programmable gain from 1 to 256 in 8 steps, and configured to double its output rate. The integrated temperature sensor offers 1/2°C resolution and 2°C absolute accuracy.The LTC2486 allows a wide common mode input range (0V to VCC), independent of the reference voltage. Any combination of single-ended or differential inputs can be selected and the first conversion after a new channel selection is valid.ApplicationsDirect Sensor DigitizerDirect Temperature MeasurementInstrumentationIndustrial Process Control