The ADS1220 is a precision, 24-bit,
analog-to-digital converter (ADC) that offers many integrated features to reduce
system cost and component count in applications measuring small sensor signals. The
device features two differential or four single-ended inputs through a flexible
input multiplexer (MUX), a low-noise, programmable gain amplifier (PGA), two
programmable excitation current sources, a voltage reference, an oscillator, a
low-side switch, and a precision temperature sensor.
The device can perform conversions at
data rates up to 2000 samples-per-second (SPS) with single-cycle settling. At
20SPS,
the digital filter offers simultaneous
50Hz
and
60Hz
rejection for noisy industrial applications. The internal PGA offers gains up to
128.
This PGA makes the ADS1220
designed
for applications measuring small sensor signals, such as resistance temperature
detectors (RTDs), thermocouples, thermistors, and resistive bridge sensors. The
device supports measurements of pseudo- or fully-differential signals when using the
PGA. Alternatively, the device can be configured to bypass the internal PGA while
still providing high input impedance and gains up to
4,
allowing for single-ended measurements.
Power consumption is as low as
120µA
when operating in duty-cycle mode with the PGA disabled. The ADS1220 is offered in a
leadless VQFN-16 or a TSSOP-16 package and is specified over a temperature range of
–40°C to +125°C.
The ADS1220 is a precision, 24-bit,
analog-to-digital converter (ADC) that offers many integrated features to reduce
system cost and component count in applications measuring small sensor signals. The
device features two differential or four single-ended inputs through a flexible
input multiplexer (MUX), a low-noise, programmable gain amplifier (PGA), two
programmable excitation current sources, a voltage reference, an oscillator, a
low-side switch, and a precision temperature sensor.
The device can perform conversions at
data rates up to 2000 samples-per-second (SPS) with single-cycle settling. At
20SPS,
the digital filter offers simultaneous
50Hz
and
60Hz
rejection for noisy industrial applications. The internal PGA offers gains up to
128.
This PGA makes the ADS1220
designed
for applications measuring small sensor signals, such as resistance temperature
detectors (RTDs), thermocouples, thermistors, and resistive bridge sensors. The
device supports measurements of pseudo- or fully-differential signals when using the
PGA. Alternatively, the device can be configured to bypass the internal PGA while
still providing high input impedance and gains up to
4,
allowing for single-ended measurements.
Power consumption is as low as
120µA
when operating in duty-cycle mode with the PGA disabled. The ADS1220 is offered in a
leadless VQFN-16 or a TSSOP-16 package and is specified over a temperature range of
–40°C to +125°C.