24bit 16ch ADC (SPI) - LTC2498
Datasheet
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.
Features
- Click here for LTC2498 Evaluation Kit
- Up to 8 Differential or 16 Single-Ended Inputs
- Easy Drive Technology Enables Rail-to-Rail Inputs with Zero Differential Input Current
- Directly Digitizes High Impedance Sensors with
- Full Accuracy
- 600nV RMS Noise
- Integrated High Accuracy Temperature Sensor
- GND to VCC Input/Reference Common Mode Range
- Programmable 50Hz, 60Hz or Simultaneous 50Hz/60Hz Rejection Mode
- 2ppm INL, No Missing Codes
- 1ppm Offset and 15ppm Full-Scale Error
- 2x Speed Mode (15Hz Using Internal Oscillator)
- No Latency: Digital Filter Settles in a Single Cycle, Even After a New Channel is Selected
- Single Supply 2.7V to 5.5V Operation (0.8mW)
- Internal Oscillator
- Tiny QFN 5mm × 7mm Package
Description
The LTC2498 is a 16-channel (8-differential) 24-bit No Latency Delta Sigma ADC with Easy Drive technology. The patented sampling scheme eliminates dynamic input current errors and the shortcomings of on-chip buffering through automatic cancellation of differential input current. This allows large external source impedances, and rail-to-rail input signals to be directly digitized while maintaining exceptional DC accuracy.The LTC2498 includes a high accuracy temperature sensor and an integrated oscillator. This device can be confi gured to measure an external signal (from combinations of 16 analog input channels operating in single ended or differential modes) or its internal temperature sensor. The integrated temperature sensor offers 1/30th °C resolution and 2°C absolute accuracy.
The LTC2498 allows a wide common mode input range (0V to VCC), independent of the reference voltage. Any combination of single-ended or differential inputs can be selected and the fi rst conversion after a new channel is selected is valid. Access to the multiplexer output enables optional external amplifi ers to be shared between all analog inputs and auto calibration continuously removes their associated offset and drift.
Packaging
QFN-38
Order Info
- Part numbers ending in PBF are lead free. Please contact LTC marketing for information on lead based finish parts.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) | Price (1k)* | RoHS Data |
| LTC2498CUHF | QFN | 38 | C | $5.05 | $3.45 | View |
| LTC2498CUHF#PBF | QFN | 38 | C | $5.05 | $3.45 | View |
| LTC2498CUHF#TR | QFN | 38 | C | $3.51 | View | |
| LTC2498CUHF#TRPBF | QFN | 38 | C | $3.51 | View | |
| LTC2498IUHF | QFN | 38 | I | $6.05 | $4.14 | View |
| LTC2498IUHF#PBF | QFN | 38 | I | $6.05 | $4.14 | View |
| LTC2498IUHF#TR | QFN | 38 | I | $4.20 | View | |
| LTC2498IUHF#TRPBF | QFN | 38 | I | $4.20 | View | |
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Evaluation Kits
| Part Number | Description | Price |
| DC590B | none | USB Serial Controller | $125.00 |
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Applications
- Direct Sensor Digitizer
- Direct Temperature Measurement
- Instrumentation
- Industrial Process Control
Simulate
Linear Technology offers free software and demo boards that greatly simplify the task of testing and evaluating our data converters. To use these powerful tools with this product:- Download the QuickEval System software. The QuickEval System is a USB-based product demonstration and data acquisition system for use with Linear Technology’s A/D, D/A, LED drivers and Powered Ethernet Controllers. The software also includes web links to the appropriate device data sheets and provides an automatic update feature to keep the software current with the latest set of device drivers.
- Request the DC590 USB Data Acquisition Controller either online or from your local sales representative. The DC590 interfaces with the USB port of your computer and connects to daughter cards for specific Linear Technology data converters.
- Request the evaluation kit for the LTC2498 (DC1011A-A), either online or from your local sales representative. This daughter card interfaces with the DC590 and, along with the QuickEval software package, allows easy evaluation of the part from your PC.