Specifications
| Type | Description |
|---|---|
| Part Number | ADS1114 |
| Manufacturer | Texas Instruments |
| Product Type | ADC |
| Category | Signal Chain |
| Package Case | RUG X2QFN-10 1.50 mm x 2.00 mm; DYN SOT-10 2.90 mm x 2.80 mm; DGS VSSOP-10 3.00 mm x 4.90 mm |
| Resolution | 16 bits, no missing codes |
| Maximum Sample Rate | 860 SPS |
| Input Channels | 1 differential or 1 single-ended |
| Programmable Gain Amplifier | Yes |
| Comparator | Yes |
| Interface | I2C |
| Supply Voltage | 2.0 to 5.5 V, VDD to GND recommended operating condition |
| Operating Ambient Temperature | -40 to +125 °C, recommended operating condition |
| Full-Scale Input Voltage Range | ±0.256 to ±6.144 V, VIN = V(AINP) - V(AINN), ADC scaling range |
| Absolute Input Voltage | GND to VDD, V(AINx) recommended operating condition |
| Digital Input Voltage | GND to 5.5 V, recommended operating condition |
| Power-Supply Absolute Maximum | -0.3 to 7 V, VDD to GND |
| Analog Input Absolute Maximum | GND - 0.3 V to VDD + 0.3 V, AIN0, AIN1, AIN2, AIN3 |
| Digital Input Absolute Maximum | GND - 0.3 V to 5.5 V, SDA, SCL, ADDR, ALERT/RDY |
| Continuous Input Current Absolute Maximum | -10 to +10 mA, any pin except power supply pins |
| Junction Temperature Absolute Maximum | -40 to +150 °C, TJ |
| Storage Temperature | -60 to +150 °C, Tstg |
| HBM ESD Rating | ±2000 V, ANSI/ESDA/JEDEC JS-001 |
| CDM ESD Rating | ±500 V, JEDEC JESD22-C101 |
| Data Rates | 8, 16, 32, 64, 128, 250, 475, 860 SPS |
| Data Rate Variation | -10% to +10%, all data rates |
| Integral Nonlinearity | 1 LSB typ, DR = 8 SPS, FSR = ±2.048 V; best-fit INL covering 99% of full-scale |
| Offset Error, Differential Inputs | -3 to +3 LSB; ±1 LSB typ, FSR = ±2.048 V |
| Offset Error, Single-Ended Inputs | ±3 LSB typ, FSR = ±2.048 V |
| Offset Drift Over Temperature | 0.005 LSB/°C typ, FSR = ±2.048 V |
| Long-Term Offset Drift | ±1 LSB typ, FSR = ±2.048 V, TA = 125°C, 1000 hours |
| Gain Error | 0.01% typ, 0.15% max, FSR = ±2.048 V, TA = 25°C |
| Gain Drift Over Temperature, ±2.048 V FSR | 5 ppm/°C typ, 40 ppm/°C max |
| Gain Drift Over Temperature, ±0.256 V FSR | 7 ppm/°C typ |
| Common-Mode Rejection Ratio, DC | 100 dB typ, FSR = ±2.048 V |
| Common-Mode Rejection Ratio, 60 Hz | 105 dB typ, fCM = 60 Hz, DR = 8 SPS |
| Common-Mode Rejection Ratio, 50 Hz | 105 dB typ, fCM = 50 Hz, DR = 8 SPS |
| Supply Current, Operating Mode | 150 µA typ, 200 µA max at 25°C; 300 µA max over temperature |
| Supply Current, Power-Down Mode | 0.5 µA typ, 2 µA max at 25°C; 5 µA max over temperature |
| Power Dissipation | 0.5 mW, VDD = 3.3 V |
| I2C SCL Clock Frequency | 0.01 to 0.4 MHz fast mode; 0.01 to 3.4 MHz high-speed mode, VDD = 2.0 V to 5.5 V |
| High-Level Input Voltage | 0.7 x VDD to 5.5 V, digital input/output |
| Low-Level Input Voltage | GND to 0.3 x VDD, digital input/output |
| Low-Level Output Voltage | 0.15 V typ, 0.4 V max, IOL = 3 mA |
| Input Leakage Current | -10 to +10 µA, GND < VDIG < VDD |
| ADDR Pin Function | I2C target address select, ADS1114 pin 1 |
| ALERT/RDY Pin Function | Open-drain comparator output or conversion-ready output, ADS1114 pin 2; connect to VDD using pullup resistor |
| Datasheet Status | request_only |
Product Overview
The ADS1114 operates from a 2.0 to 5.5 V supply and supports an operating ambient temperature range of -40 to +125 °C. The ADC scaling range covers full-scale input voltage settings from ±0.256 to ±6.144 V, while the recommended absolute input voltage range is GND to VDD. Digital input voltage is specified from GND to 5.5 V.
For package selection, ADS1114 is listed in RUG X2QFN-10 1.50 mm x 2.00 mm, DYN SOT-10 2.90 mm x 2.80 mm, and DGS VSSOP-10 3.00 mm x 4.90 mm packages. The ADDR pin selects the I2C target address, and ALERT/RDY is an open-drain comparator or conversion-ready output requiring a pullup resistor to VDD.
The device targets I2C-connected signal acquisition where one analog input path, configurable gain, comparator signaling, and low operating or power-down current are required.
Key Features
- 16-bit resolution with no missing codes
- Up to 860 SPS maximum sample rate
- One differential or one single-ended input channel
- Integrated programmable gain amplifier
- Comparator with ALERT/RDY open-drain output
- I2C interface with ADDR target address selection
- 2.0 to 5.5 V recommended supply range
- ±0.256 to ±6.144 V full-scale input range
- 8 to 860 SPS selectable data rates
- 150 µA typical operating supply current
- 0.5 µA typical power-down supply current
- -40 to +125 °C ambient operating range
Typical Applications
- I2C signal measurement
- Differential voltage acquisition
- Single-ended analog input sensing
- Low-current data acquisition
- Conversion-ready interrupt signaling
- Comparator-based threshold detection
- Selectable-gain sensor interfaces
- Wide-temperature signal monitoring
Procurement Notes
When requesting a quote for ADS1114, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What resolution does the ADS1114 provide?
The ADS1114 provides 16-bit resolution with no missing codes. Its electrical characteristics also specify integral nonlinearity of 1 LSB typical at 8 SPS with a ±2.048 V full-scale range.
What input configurations are supported by ADS1114?
The ADS1114 supports one differential input channel or one single-ended input channel. The full-scale input voltage scaling range is specified from ±0.256 V to ±6.144 V.
What supply and temperature ranges apply to ADS1114?
The recommended operating supply voltage is 2.0 to 5.5 V from VDD to GND. The recommended operating ambient temperature range is -40 to +125 °C.
What I2C clock rates are specified for ADS1114?
The ADS1114 I2C SCL clock frequency is specified from 0.01 to 0.4 MHz in fast mode and from 0.01 to 3.4 MHz in high-speed mode across 2.0 to 5.5 V operation.
How is the ALERT/RDY pin used on ADS1114?
The ALERT/RDY pin is an open-drain comparator output or conversion-ready output. The extracted pin information specifies connecting this pin to VDD using a pullup resistor.
What is the sourcing status of ADS1114 on LDeepAI?
ADS1114 is listed with sourcing support. For current pricing, availability, and lead time details, please submit an RFQ through the product page.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.