ADS1218

Features: · 24 BITS NO MISSING CODES· 0.0015% INL· 22 BITS EFFECTIVE RESOLUTION (PGA = 1), 19 BITS (PGA = 128)· 4K BYTES OF FLASH MEMORY PROGRAMMABLE FROM 2.7V TO 5.25V· PGA FROM 1 TO 128· SINGLE CYCLE SETTLING MODE· PROGRAMMABLE DATA OUTPUT RATES UP TO 1kHz· PRECISION ON-CHIP 1.25V/2.5V REFERENCE...

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SeekIC No. : 004277015 Detail

ADS1218: Features: · 24 BITS NO MISSING CODES· 0.0015% INL· 22 BITS EFFECTIVE RESOLUTION (PGA = 1), 19 BITS (PGA = 128)· 4K BYTES OF FLASH MEMORY PROGRAMMABLE FROM 2.7V TO 5.25V· PGA FROM 1 TO 128· SINGLE CY...

floor Price/Ceiling Price

Part Number:
ADS1218
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/10/30

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Product Details

Description



Features:

· 24 BITS NO MISSING CODES
· 0.0015% INL
· 22 BITS EFFECTIVE RESOLUTION (PGA = 1), 19 BITS (PGA = 128)
· 4K BYTES OF FLASH MEMORY PROGRAMMABLE FROM 2.7V TO 5.25V
· PGA FROM 1 TO 128
· SINGLE CYCLE SETTLING MODE
· PROGRAMMABLE DATA OUTPUT RATES UP TO 1kHz
· PRECISION ON-CHIP 1.25V/2.5V REFERENCE: ACCURACY: 0.2% DRIFT: 5ppm/°C
· EXTERNAL DIFFERENTIAL REFERENCE OF 0.1V TO 2.5V
· ON-CHIP CALIBRATION
· PIN COMPATIBLE WITH ADS1216
· SPI™ COMPATIBLE
· 2.7V TO 5.25V
· < 1mW POWER CONSUMPTION



Application

· INDUSTRIAL PROCESS CONTROL
· LIQUID/GAS CHROMATOGRAPHY
· BLOOD ANALYSIS
· SMART TRANSMITTERS
· PORTABLE INSTRUMENTATION
· WEIGHT SCALES
· PRESSURE TRANSDUCERS



Pinout

  Connection Diagram


Specifications

AVDD to AGND ......................................................................   0.3V to +6V
DVDD to DGND ......................................................................   0.3V to +6V
Input Current ............................................................... 100mA, Momentary
Input Current ................................................................. 10mA, Continuous
AIN ...................................................................  GND 0.5V to AVDD + 0.5V
AVDD to DVDD ........................................................................... 6V to +6V
AGND to DGND .................................................................    0.3V to +0.3V
Digital Input Voltage to GND .................................... 0.3V to DVDD + 0.3V
Digital Output Voltage to GND ................................. 0.3V to DVDD + 0.3V
Maximum Junction Temperature ...................................................   +150°C
Operating Temperature Range ......................................... 40°C to +85°C
Storage Temperature Range .......................................... 60°C to +100°C
Lead Temperature (soldering, 10s) ..............................................  +300°C



Description

The ADS1218 is a precision, wide dynamic range, delta-sigma, Analog-to- Digital (A/D) converter with 24-bit resolution and FLASH memory operating from 2.7V to 5.25V supplies. The delta-sigma, A/D converter provides up to 24 bits of no missing code performance and effective resolution of 22 bits.

The eight input channels of ADS1218 are multiplexed. Internal buffering can be selected to provide a very high input impedance for direct connection to transducers or low-level voltage signals. Burn out current sources are provided that allow for the detection of an open or shorted sensor. An 8-bit Digital-to-Analog (D/ A) converter provides an offset correction with a range of 50% of the FSR (Full-Scale Range).

The PGA (Programmable Gain Amplifier) provides selectable gains of 1 to 128 with an effective resolution of 19 bits at a gain of 128. The ADS1218 A/D conversion is accomplished with a second-order delta-sigma modulator and programmable sinc filter. The reference input is differential and can be used for ratiometric conversion. The on-board current DACs (Digital-to-Analog Converters) operate independently with the maximum current set by an external resistor.

The serial interface is SPI compatible. Eight bits of digital I/O are also provided that can be used for input or output. The ADS1218 is designed for high-resolution measurement applications in smart transmitters, industrial process control, weight scales, chromatography, and portable instrumentation.




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