Datasheet LTC2410 (Analog Devices)

LTC2410 24-Bit No Latency ∆Σ™ ADC with Differential Input and Differential Reference
FEATURES DESCRIPTION
n
Differential Input and Differential Reference with
The LTC®2410 is a 2.7V to 5.5V micropower 24-bit dif-
GND to VCC Common Mode Range
ferential ∆Σ analog to digital converter with an integrated n
2ppm INL, No Missing Codes
oscillator, 2ppm INL and 0.16ppm RMS noise. It uses n
2.5ppm Full-Scale Error
delta-sigma technology and provides single cycle settling n
0.1ppm Offset
time for multiplexed applications. Through a single pin, n
0.16ppm Noise
the LTC2410 can be configured for better than 110dB n
Single Conversion Settling Time for Multiplexed
input differential mode rejection at 50Hz or 60Hz ±2%, or
Applications
it can be driven by an external oscillator for a user defined n Internal Oscillator—No External Components rejection frequency. The internal oscillator requires no Required external frequency setting components. n 110dB Min, 50Hz or 60Hz Notch Filter The converter accepts any external differential reference n 24-Bit ADC in Narrow SSOP-16 Package voltage from 0.1V to VCC for flexible ratiometric and re- (SO-8 Footprint) mote sensing measurement configurations. The full-scale n Single Supply 2.7V to 5.5V Operation differential input range is from –0.5VREF to 0.5VREF. The n Low Supply Current (200µA) and Auto Shutdown reference common mode voltage, VREFCM, and the input n Fully Differential Version of LTC2400 common mode voltage, VINCM, may be independently set anywhere within the GND to VCC range of the LTC2410. The
APPLICATIONS
DC common mode input rejection is better than 140dB. n Direct Sensor Digitizer The LTC2410 communicates through a flexible 3-wire n Weight Scales digital interface which is compatible with SPI and MI- n Direct Temperature Measurement CROWIRE protocols. n Gas Analyzers L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and No Latency ∆Σ is a trademark of Linear Technology Corporation. All other trademarks are the n Strain-Gauge Transducers property of their respective owners. n Instrumentation n Data Acquisition n Industrial Process Control n 6-Digit DVMs
TYPICAL APPLICATION
2.7V TO 5.5V VCC 1µF 1µF VCC= INTERNAL OSC/50Hz REJECTION 2 14 V = EXTERNAL CLOCK SOURCE CC FO = INTERNAL OSC/60Hz REJECTION LTC2410 3 2 REF+ V 12 SDO 3 CC REFERENCE REF+ 13 BRIDGE SCK 5 VOLTAGE 4 IMPEDANCE IN+ 13 SCK 3-WIRE 0.1V TO V REF– 100Ω TO 10k 6 LTC2410 CC IN– SPI INTERFACE 3-WIRE 11 CS 5 12 ANALOG INPUT RANGE IN+ SDO SPI INTERFACE 4 REF– GND F –0.5V O REF TO 0.5VREF 6 IN– 11 CS 1, 7, 8 14 1, 7, 8, 9, 10, 15, 16 9, 10, GND 2410 TA01 15, 16 2410 TA02 2410fa For more information www.linear.com/LTC2410 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Electrical Characteristics Converter Characteristics Analog Input and Reference Digital Inputs and Digital Outputs Power Requirements Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Test Circuit Applications Information Typical Applications Package Description PCB Layout and Film Revision History PCB Layout and Film Related Parts