Packaging information
| Package | Pins TSSOP (PW) | 16 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 2,000 | LARGE T&R |
Features for the ADS1120-Q1
- AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C to +125°C, TA
- Functional Safety-Capable
- Wide supply range: 2.3 V to 5.5 V
- Programmable gain: 1 V/V to 128 V/V
- Programmable data rates: 5 SPS to 2 kSPS
- 16-bit, noise-free resolution at 20 SPS
- Simultaneous 50-Hz and 60-Hz rejection at
20 SPS with single-cycle settling digital filter - Two differential or four single-ended inputs
- Dual-matched programmable current sources:
50 µA to 1.5 mA - Internal 2.048-V reference: 5 ppm/°C (typ) drift
- Internal 2% accurate oscillator
- Internal temperature sensor:
0.5°C (typ) accuracy - SPI-compatible interface (mode 1)
Description for the ADS1120-Q1
The ADS1120-Q1 is a precision, 16-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 20 SPS, the digital filter offers simultaneous 50-Hz and 60-Hz rejection for noisy industrial applications. The internal PGA offers gains up to 128 V/V. This PGA makes the ADS1120-Q1 ideally-suited for applications measuring small sensor signals, such as resistance temperature detectors (RTDs), thermocouples, thermistors, and 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 V/V, allowing for single-ended measurements.
Power consumption is as low as 120 µA when operating in duty-cycle mode with the PGA disabled. Communication to the device is established through a mode 1 SPI-compatible interface. The ADS1120-Q1 is offered in a TSSOP-16 package and is specified over a temperature range of –40°C to +125°C.