LTC2482 Series

16-Bit ΔΣ ADC with Easy Drive Input Current Cancellation

Catalog

16-Bit ΔΣ ADC with Easy Drive Input Current Cancellation

Part	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Voltage - Supply, Digital [Max]	Voltage - Supply, Digital [Min]	Number of Bits	Supplier Device Package	Sampling Rate (Per Second)	Architecture	Mounting Type	Input Type	Configuration	Reference Type	Voltage - Supply, Analog [Min]	Voltage - Supply, Analog [Max]	Data Interface	Number of A/D Converters	Number of Inputs
Analog Devices LTC2482CDD#PBF	70 °C	0 °C	10-WFDFN Exposed Pad	5.5 V	2.7 V	16	10-DFN (3x3)	6.8 Per Second	Sigma-Delta	Surface Mount	Differential	ADC	External	2.7 V	5.5 V	SPI	1	1
Analog Devices LTC2482IDD#PBF	85 °C	-40 °C	10-WFDFN Exposed Pad	5.5 V	2.7 V	16	10-DFN (3x3)	6.8 Per Second	Sigma-Delta	Surface Mount	Differential	ADC	External	2.7 V	5.5 V	SPI	1	1
Analog Devices LTC2482IDD#TRPBF	85 °C	-40 °C	10-WFDFN Exposed Pad	5.5 V	2.7 V	16	10-DFN (3x3)	6.8 Per Second	Sigma-Delta	Surface Mount	Differential	ADC	External	2.7 V	5.5 V	SPI	1	1

Catalog

16-Bit ΔΣ ADC with Easy Drive Input Current Cancellation

Key Features

• Easy Drive™Technology Enables Rail-to-Rail Inputs with Zero Differential Input Current

• Directly Digitizes High Impedance Sensors with Full Accuracy

• 600nV RMS Noise, Independent of VREF

• Operates with a Reference as Low as 100mV with 16-Bit Resolution

• GND to VCCInput/Reference Common Mode Range

• Simultaneous 50Hz/60Hz Rejection Mode

• 2ppm INL, No Missing Codes

• 1ppm Offset and 15ppm Total Unadjusted Error

• No Latency: Digital Filter Settles in a Single Cycle

• Single Supply 2.7V to 5.5V Operation

• Internal Oscillator

• Available in a Tiny (3mm × 3mm) 10-Lead DFN Package

Description

The LTC2482 combines a 16-bit plus sign No Latency ΔΣ™analog-to-digital converter with patented 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 input signals with rail-to-rail input range to be directly digitized while maintaining exceptional DC accuracy.The LTC2482 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 600nV RMS independent of VREF. This allows direct digitization of low level signals with 16-bit accuracy. The LTC2482 includes an on-chip trimmed oscillator, eliminating the need for external crystals or oscillators and provides 87dB rejection of 50Hz and 60Hz line frequency noise. Absolute accuracy and low drift are automatically maintained through continuous, transparent, offset and full-scale calibration.ApplicationsDirect Sensor DigitizerWeight ScalesDirect Temperature MeasurementStrain Gauge TransducersInstrumentationIndustrial Process ControlDVMs and Meters