ADI

LTC2445CUHF#PBF

SPI 4.5V~5.5V QFN-38-EP(5x7) Analog to Digital Converters (ADC) RoHS

QFN-38-EP(5x7)ROHS3 CompliantActive

24-Bit High Speed △E ADCs with Selectable Speed/Resolution

Manufacturer: ADI
Manufacturer part #: LTC2445CUHF#PBF
Store part #: C680716
Package / case: QFN-38-EP(5x7)
Category: Analog to Digital Converters (ADC)
Packaging: Tube-packed

Datasheet (PDF)

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5 in stock

#C680716

Stock & price checked 44 h ago

Quantity	Unit price	Pack price
1+	₹2,628.11	₹2,628.11
30+	₹2,497.80	₹74,934.00

Quantity (min 1)

1 × ₹2,628.11

₹2,628.11

excl. GST

₹3,101.17 incl. 18% GST

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Standard pack: 52 per tube

LTC2445CUHF#PBF

₹2,628.11 for 1 + GST

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Specifications

Operating Temperature: 0℃~+70℃
Features: Programmable gain;Bipolar input;On-chip calibration
Interface: SPI
Resolution(Bits): 1.8MHz;24
Quiescent Current (Iq): 8uA
Voltage - Supply: 4.5V~5.5V
Number of Channels: 8
ADC architecture: Sigma-Delta

Packaging & compliance

RoHS: ROHS3 Compliant
Lifecycle: Active
ECCN: EAR99
Packaging: Tube-packed
Standard pack: 52 / Tube
Sold per: Piece
Minimum order: 1
Unit weight: 0.22 g

Overview

The LTC2444/LTC2445/LTC2448/LTC2449 are 8-/16- channel (4-/8-differential) high speed 24-bit No Latency Delta-Sigma (TM) ADCs. They use a proprietary delta-sigma architecture enabling variable speed/resolution. Through a simple 4-wire serial interface, ten speed/resolution combinations 6.9Hz/280nVRMS to 3.5kHz/25µVRMS (4kHz with external oscillator) can be selected with no latency between conversion results or shift in DC accuracy (offset, full-scale, linearity, drift). Additionally, a 2X speed mode can be selected enabling output rates up to 7kHz (8kHz if an external oscillator is used) with one cycle latency. Any combination of single-ended or differential inputs can be selected with a common mode input range from ground to V_complement, independent of VREF. While operating in the 1X speed mode the first conversion following a new speed, resolution, or channel selection is valid. Since there is no settling time between conversions, all 8 differential channels can be scanned at a rate of 500Hz. At the conclusion of each conversion, the converter is internally reset eliminating any memory effects between successive conversions and assuring stability of the high order delta-sigma modulator.

Applications

High Speed Multiplexing
Weight Scales
Auto Ranging 6-Digit DVMs
Direct Temperature Measurement
High Speed Data Acquisition

Key features

Up to 8 Differential or 16 Single-Ended Input Channels
Up to 8kHz Output Rate (External fO)
Up to 4kHz Multiplexing Rate (External fO)
Selectable Speed/Resolution
2µVRMS Noise at 1.76kHz Output Rate
200nVRMS Noise at 13.8Hz Output Rate with Simultaneous 50Hz/60Hz Rejection
Guaranteed Modulator Stability and Lock-Up Immunity for any Input and Reference Conditions
0.0005% INL, No Missing Codes
Autosleep Enables 20µA Operation at 6.9Hz
<5µV Offset (4.5V < VCC < 5.5V, -40℃ to 85℃)
Differential Input and Differential Reference with GND to VCC Common Mode Range
No Latency Mode, Each Conversion is Accurate Even After a New Channel is Selected
Internal Oscillator—No External Components
LTC2445/LTC2449 Include MUXOUT/ADCIN for External Buffering or Gain
Tiny QFN 5mm x 7mm Package