ADS1120IRVAR
4-Channel Single ADC Delta-Sigma 2ksps 16-bit Serial (5-Wire, 4-Wire, 3-Wire, SPI) 16-Pin VQFN EP T/R
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Part Number : ADS1120IRVAR
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Package/Case : VQFN-16
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Brands : TI
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Components Categories : Precision ADCs
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Datesheet : ADS1120IRVAR DataSheet (PDF)
Overview of ADS1120IRVAR
The ADS1120 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 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. The ADS1120 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.
Key Features
- Low Current Consumption:
As Low as 120 µA (typ) in Duty-Cycle Mode - Wide Supply Range: 2.3 V to 5.5 V
- Programmable Gain: 1 V/V to 128 V/V
- Programmable Data Rates: Up 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)
- Package: 3.5-mm × 3.5-mm × 0.9-mm VQFN
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
Product Status | Active | Number of Bits | 16 |
Sampling Rate (Per Second) | 2k | Input Type | Differential/Single-Ended |
Data Interface | SPI | Configuration | MUX-PGA-ADC |
Ratio - S/H:ADC | 0:1 | Architecture | Sigma-Delta |
Voltage - Supply, Analog | 2.3V ~ 5.5V, ±2.3V ~ 2.75V | Voltage - Supply, Digital | 2.3V ~ 5.5V |
Features | 50/60 Hz Rejection, Excitation Current Sources (iDACs), Oscillator, PGA, Temp Sensor | Operating Temperature | -40°C ~ 125°C |
Package / Case | VQFN-16 | Supplier Device Package | 16-VQFN (3.5x3.5) |
Mounting Type | Surface Mount | Base Product Number | ADS1120 |
Manufacturer | Texas Instruments | Product Category | Analog to Digital Converters - ADC |
RoHS | Details | Series | ADS1120 |
Mounting Style | SMD/SMT | Resolution | 16 bit |
Number of Channels | 4 Channel | Interface Type | SPI |
Sampling Rate | 2 kS/s | Analog Supply Voltage | 2.3 V to 5.5 V |
Digital Supply Voltage | 2.3 V to 5.5 V | Minimum Operating Temperature | - 40 C |
Maximum Operating Temperature | + 125 C | Brand | Texas Instruments |
INL - Integral Nonlinearity | 0.002 % FSR | Moisture Sensitive | Yes |
Operating Supply Voltage | 2.3 V to 5.5 V | Power Consumption | 1.4 mW |
Product Type | ADCs - Analog to Digital Converters | Reference Type | External, Internal, Supply |
Factory Pack Quantity | 3000 | Subcategory | Data Converter ICs |
Supply Voltage - Max | 5.5 V | Supply Voltage - Min | 2.3 V |
Unit Weight | 0.001623 oz | Resolution (Bits) | 16 |
Sample rate (max) (ksps) | 2 | Number of input channels | 4 |
Interface type | SPI | Input type | Differential, Single-ended |
Multichannel configuration | Multiplexed | Rating | Catalog |
Reference mode | External, Internal, Supply | Input voltage range (max) (V) | 2.85, 5.6 |
Input voltage range (min) (V) | -2.85, 0 | Operating temperature range (°C) | -40 to 125 |
Power consumption (typ) (mW) | 1.4 | Analog supply (min) (V) | 2.3 |
Analog supply voltage (max) (V) | 5.5 | Digital supply (min) (V) | 2.3 |
Digital supply (max) (V) | 5.5 |
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Warranty, Returns, and Additional Information
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