LTC2446IUHF#PBF Multiplexed A/D Converters by Analog Devices

Status: Production
Series: LTC2446
RoHS: Compliant
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The LTC2446/LTC2447 4-terminal switching enables multiplexed ratiometric measurements. Four sets of selectable differential inputs coupled with four sets of differential reference inputs allow multiple RTDs, bridges and other sensors to be digitized by a single converter. A fifth differential reference input can be selected for any input channel not requiring ratiometric measurements (thermocouples, voltages, current sense, etc.). The flexible input multiplexer allows single-ended or differential inputs coupled with a slaved reference input or a universal reference input.A proprietary delta-sigma architecture results in absolute accuracy (offset, full-scale, linearity) of 15ppm, noise as low as 200nVRMS and speeds as high as 8kHz. Through a simple 4-wire interface, ten speed/resolution combinations can be selected. The first conversion following a speed, resolution, channel change or reference change is valid since there is no settling time between conversions, enabling scan rates of up to 4kHz. Additionally, a 2x mode can be selected for any speed-enabling output rates up to 8kHz with one cycle of latency.Protected by U.S. Patents, including 6140950, 6169506, 6208279, 6411242, 6639526

Where to Buy

Prices starting from US$10.81

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Features

Five Selectable Differential Reference Inputs
Four Differential/Eight Single-Ended Inputs
4-Way MUX for Multiple Ratiometric Measurements
Up to 8kHz Output Rate
Up to 4kHz Multiplexing Rate
Selectable Speed/Resolution:
2µVRMS Noise at 1.76kHz Output Rate
200nVRMS Noise at 13.8Hz Output Rate with
Simultaneous 50/60Hz 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°C to 85°C)
Differential Input and Differential Reference withn 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
LTC2447 Includes MUXOUT/ADCIN for External Buffering or Gain
Tiny QFN 5mm x 7mm Package

Alternative Descriptions

24-B 8-Ch DS ADCs w/ Sel Mult | Analog Devices
CONVERTER - ADC | Richardson RFPD


LTC2446IUHF#PBF Data & Signal Conversion by Linear Technology

ADC 24BIT 4 CH 38QFN

Status: Unknown
Series: Octal 24-Bit Sigma-Delta ADCs
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Resolution (Bits) 24bit
Sampling Rate 8kSPS
Input Channel Type Differential Single Ended
Data Interface SPI
Supply Voltage Type Single
Supply Voltage Min 4.5V
Supply Voltage Max 5.5V
ADC / DAC Case Style QFN
No. of Pins 38Pins
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range Octal 24-Bit Sigma-Delta ADCs
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)
Operating Temperature Range -40°C to +85°C
Supply Current 8mA
Supply Voltage Range 4.5V to 5.5V

Frequently Asked Questions

Where can I find additional details, specifications and documents for a LTC2446IUHF#PBF?

Additional datasheets, footprints and schematics for LTC2446IUHF#PBF are listed on our Part Details page. You can also find images and similar parts to LTC2446IUHF#PBF on this page.

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What category does LTC2446IUHF#PBF fall under?

The LTC2446IUHF#PBF is listed under Multiplexed A/D Converters.

Can I view similar or alternative parts?

You can view similar parts to LTC2446IUHF#PBF when available in the Multiplexed A/D Converters range under the specifications section at the bottom of the details page.

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Is the LTC2446IUHF#PBF RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

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Authorised distributors including Analog Devices and Richardson RFPD have stock available or on a lead time for LTC2446IUHF#PBF.

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