The ADS1018-Q1 is a precision, low power, 12-bit, noise-free, analog-to-digital converter (ADC) that provides all features necessary to measure the most common sensor signals. The ADS1018-Q1 integrates a programmable gain amplifier (PGA), voltage reference, oscillator, and high-accuracy temperature sensor. These features, along with a wide power-supply range from 2 V to 5.5 V, make the
ADS1018-Q1 ideally suited for power- and space-constrained, sensor-measurement applications.
The ADS1018-Q1 performs conversions at data rates up to 3300 samples per second (SPS). The PGA offers input ranges from ±256 mV to ±6.144 V, allowing both large and small signals to be measured with high resolution. An input multiplexer (mux) allows measurement of two differential or four single-ended inputs. The high-accuracy temperature sensor is used for system-level temperature monitoring, or cold-junction compensation for thermocouples.
The ADS1018-Q1 operates either in continuous-conversion mode, or in a single-shot mode that automatically powers down after a conversion. Single-shot mode significantly reduces current consumption during idle periods. Data are transferred through a serial peripheral interface (SPI™). The ADS1018-Q1 is specified from –40°C to +125°C.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
ADS1018-Q1 | VSSOP (10) | 3.00 mm × 3.00 mm |
Changes from A Revision (November 2015) to B Revision
Changes from * Revision (October 2015) to A Revision
DEVICE | RESOLUTION
(Bits) |
MAXIMUM SAMPLE RATE
(SPS) |
INPUT CHANNELS
Differential (Single-Ended) |
PGA | INTERFACE | SPECIAL FEATURES |
---|---|---|---|---|---|---|
ADS1118-Q1 | 16 | 860 | 2 (4) | Yes | SPI | Temperature sensor |
ADS1018-Q1 | 12 | 3300 | 2 (4) | Yes | SPI | Temperature sensor |
ADS1115-Q1 | 16 | 860 | 2 (4) | Yes | I2C | Comparator |
ADS1015-Q1 | 12 | 3300 | 2 (4) | Yes | I2C | Comparator |
PIN | TYPE | DESCRIPTION | |
---|---|---|---|
NO. | NAME | ||
1 | SCLK | Digital input | Serial clock input |
2 | CS | Digital input | Chip select; active low. Connect to GND if not used. |
3 | GND | Supply | Ground |
4 | AIN0 | Analog input | Analog input 0. Leave unconnected or tie to VDD if not used. |
5 | AIN1 | Analog input | Analog input 1. Leave unconnected or tie to VDD if not used. |
6 | AIN2 | Analog input | Analog input 2. Leave unconnected or tie to VDD if not used. |
7 | AIN3 | Analog input | Analog input 3. Leave unconnected or tie to VDD if not used. |
8 | VDD | Supply | Power supply. Connect a 0.1-µF power supply decoupling capacitor to GND. |
9 | DOUT/DRDY | Digital output | Serial data output combined with data ready; active low |
10 | DIN | Digital input | Serial data input |
VALUE | UNIT | |||
---|---|---|---|---|
V(ESD) | Electrostatic discharge | Human body model (HBM), per AEC Q100-002(1)
HBM ESD classification level 2 |
±2000 | V |
Charged device model (CDM), per AEC Q100-011
CDM ESD classification level C6 |
±1000 |
MIN | NOM | MAX | UNIT | |||
---|---|---|---|---|---|---|
POWER SUPPLY | ||||||
VDD | Power supply | VDD to GND | 2 | 5.5 | V | |
ANALOG INPUTS(2) | ||||||
FSR | Full-scale input voltage(1) | VIN = V(AINP) - V(AINN) | See Table 1 | |||
V(AINx) | Absolute input voltage | GND | VDD | V | ||
DIGITAL INPUTS | ||||||
Input voltage | GND | VDD | V | |||
TEMPERATURE | ||||||
TA | Operating ambient temperature | –40 | 125 | °C |