LTC2480 Series

16-Bit ΔΣ ADC with Easy Drive Input Current Cancellation

Catalog

16-Bit ΔΣ ADC with Easy Drive Input Current Cancellation

Part	Package / Case	Mounting Type	Data Interface	Number of Bits	Voltage - Supply, Digital [Max]	Voltage - Supply, Digital [Min]	Configuration	Sampling Rate (Per Second)	Number of Inputs	Features	Reference Type	Architecture	Supplier Device Package	Input Type	Number of A/D Converters	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply, Analog [Min]	Voltage - Supply, Analog [Max]	Package / Case [x]	Package / Case [x]
Analog Devices LTC2480HDD#PBF	10-WFDFN Exposed Pad	Surface Mount	SPI	16	5.5 V	2.7 V	MUX-ADC	7.5 Per Second	1	Temperature Sensor	External	Sigma-Delta	10-DFN (3x3)	Differential	1	125 °C	-40 °C	2.7 V	5.5 V
Analog Devices LTC2480HMS#TRPBF	10-MSOP 10-TFSOP	Surface Mount	SPI	16	5.5 V	2.7 V	MUX-ADC	7.5 Per Second	1	Temperature Sensor	External	Sigma-Delta	10-MSOP	Differential	1	125 °C	-40 °C	2.7 V	5.5 V	3 mm	0.118 in

Catalog

16-Bit ΔΣ ADC with Easy Drive Input Current Cancellation

Key Features

• Extended Temperature Range of –40°C to 125°C

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

• Directly Digitizes High Impedance Sensors with Full Accuracy

• Programmable Gain from 1 to 256

• GND to VCCInput/Reference Common Mode Range

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

• 2ppm (0.25LSB) INL, No Missing Codes

• 1ppm Offset and 15ppm Full-Scale Error

• Selectable 2x Speed Mode (15Hz Using Internal Oscillator)

• 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 and 10-Lead MSOP Package

Description

The LTC2480 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 onchip 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 LTC2480 includes on-chip programmable gain and an oscillator. The LTC2480 can be configured to provide a programmable gain from 1 to 256 in 8 steps, measure an external signal or internal temperature sensor and reject line frequencies. 50Hz, 60Hz or simultaneous 50Hz/60Hz line frequency rejection can be selected as well as a 2x speed-up mode.The LTC2480 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 LTC2480 includes an on-chip trimmed oscillator eliminating the need for external crystals or oscillators. 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