Conversor A/d 24 Bits Sigma Delta Pga Ads1242ipwt Itytarg

Number of Bits 24
Sampling Rate (Per Second) 15
Number of Inputs 4
Input Type Differential, Single Ended
Data Interface SPI
Configuration MUX-PGA-ADC
Ratio - S/H:ADC -
Number of A/D Converters 1
Architecture Sigma-Delta
Reference Type External
Voltage - Supply, Analog 2.7V ~ 3.3V, 5V
Voltage - Supply, Digital 2.7V ~ 5.25V
Features PGA
Operating Temperature -40°C ~ 85°C
Package / Case 16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package 16-TSSOP
Mounting Type Surface Mount

FEATURES
● 24 BITS NO MISSING CODES
● SIMULTANEOUS 50Hz AND 60Hz REJECTION
(–90dB MINIMUM)
● 0.0015% INL
● 21 BITS EFFECTIVE RESOLUTION
(PGA = 1), 19 BITS (PGA = 128)
● PGA GAINS FROM 1 TO 128
● SINGLE-CYCLE SETTLING
● PROGRAMMABLE DATA OUTPUT RATES
● EXTERNAL DIFFERENTIAL REFERENCE
OF 0.1V TO 5V
● ON-CHIP CALIBRATION
● SPI™ COMPATIBLE
● 2.7V TO 5.25V SUPPLY RANGE
● 600µW POWER CONSUMPTION
● UP TO EIGHT INPUT CHANNELS
● UP TO EIGHT DATA I/O

DESCRIPTION
The ADS1242 and ADS1243 are precision, wide dynamic
range, delta-sigma, analog-to-digital (A/D) converters with
24-bit resolution operating from 2.7V to 5.25V supplies.
These delta-sigma, A/D converters provide up to 24 bits of no
missing code performance and effective resolution of 21 bits.
The input channels are multiplexed. Internal buffering can be
selected to provide a very high input impedance for direct
connection to transducers or low-level voltage signals. Burnout current sources are provided that allow for the detection
of an open or shorted sensor. An 8-bit digital-to-analog
converter (DAC) provides an offset correction with a range of
50% of the FSR (Full-Scale Range).
The Programmable Gain Amplifier (PGA) provides selectable
gains of 1 to 128 with an effective resolution of 19 bits at a gain
of 128. The A/D conversion is accomplished with a second-order
delta-sigma modulator and programmable FIR filter that provides a simultaneous 50Hz and 60Hz notch. The reference input
is differential and can be used for ratiometric conversion.
The serial interface is SPI compatible. Up to eight bits of data
I/O are also provided that can be used for input or output. The
ADS1242 and ADS1243 are designed for high-resolution
measurement applications in smart transmitters, industrial
process control, weight scales, chromatography, and portable
instrumentation.