Linear Technology LTC2446
24-Bit High Speed 8-Channel ADCs
FEATURES
24-Bit High Speed 8-Channel ∆Σ ADCs with Selectable Multiple Reference InputsDESCRIPTION
nn Five Selectable Differential Reference Inputs nn Four Differential/Eight Single-Ended Inputs nn 4-Way MUX for Multiple Ratiometric Measurements nn Up to 8kHz Output Rate (External fO) nn nn Up to 4kHz Selectable Multiplexing Rate (External Speed/Resolution: fO) 22Sµ0imV0nRuVMltRSaMnNSeooNiusoseis5ae0t /a16t.071H63zk.H8RHzezOjeOuctutpitoupntuRt Rataete with nn Guaranteed Modulator Stability and Lock-Up Immunity for any Input and Reference Conditions nn 0.0005% INL, No Missing Codes nn Autosleep Enables 20µA Operation at 6.9Hz nn nn <5µV Offset Differential I(n4p.5uVt a<nVdCDCif<fe5r.e5nVti,a–l4R0e°fCerteon8c5e°wC)ith GND to VCC Common Mode Range nn No Latency Mode, Each Conversion is Accurate Even After a New Channel is Selected nn Internal Oscillator—No External Components nn LTC2447 Includes MUXOUT/ADCIN for External Buffering or Gain nn Tiny QFN 5mm × 7mm Package The LTC®2446/LTC2447 4-terminal switching enables multiplexed ratiometric measurements.