ADS1114 — Datasheet Summary, Specs & Alternatives

01 — Overview

This Texas Instruments datasheet covers the ADS1113, ADS1114, and ADS1115 family of ultra-small, low-power, 16-bit analog-to-digital converters (ADCs). Designed for space-constrained sensor applications like battery monitoring and temperature measurement, these devices feature an internal voltage reference and oscillator. Key parameters include a supply range of 2.0V to 5.5V, continuous current consumption as low as 150μA, and programmable data rates from 8SPS to 860SPS. The chips offer single-cycle settling times and support I2C interfaces with four selectable addresses. Package options include X2QFN-10, SOT-10, and VSSOP-10, operating across temperatures from -40°C to +125°C.

02 — Key specifications

Datasheet parameters

Parameter	Min	Typ	Max	Conditions
quiescent current	—	500 nA	2 µA	Power-down; TA = 25°C
supply voltage range	—	—	5.5 V
cmrr	105 dB	—	—	At DC, FSR = ±0.256V
operating temperature	-40 °C	—	125 °C
power dissipation	—	900 µW	—	VDD = 5.0V
adc resolution	—	16 bit	—
output voltage low	—	150 mV	400 mV	IOL = 3mA
sample rate	—	860 Hz	—
settling time	—	1.16 ms	—
channel count	—	1	—

03 — Alternatives

Closest matches to ADS1114

ADS1255 2.2× lower supply voltage range, 1.5× higher adc resolution, 1.3× higher output voltage low

ADS131M02IPWR 13.0× lower settling time, 6.9× higher power dissipation, 1.7× lower supply voltage range

ADS131M02 6.9× higher power dissipation, 3.6× lower settling time, 2.1× lower supply voltage range

PCM1808 1.9× lower operating temperature, 1.5× higher adc resolution, 1.1× lower supply voltage range

MCP3002 2.7× higher output voltage low, 1.9× lower operating temperature, 1.6× lower adc resolution

AD7124-8BBCPZ 13.7× lower supply voltage range, 1.5× higher adc resolution, 1.2× lower cmrr

AD7682BCBZ-RL7 13.9× higher power dissipation, 4.3× higher settling time, 1.9× lower operating temperature

MCP3004 2.7× higher output voltage low, 1.9× lower operating temperature, 1.6× lower adc resolution

04 — FAQ

Frequently asked questions

What is the ADC resolution of the ADS1114?

The ADC resolution is 16 bit.

How many channels does the ADS1114 have?

The ADS1114 has 1 channel.

What is the CMRR at DC with an FSR of ±0.256V?

The CMRR is 105 dB at DC with an FSR of ±0.256V.

What is the maximum operating temperature for the ADS1114?

The maximum operating temperature is 125 °C.

What is the maximum output voltage low when IOL = 3mA?

The output voltage low is 150 mV when IOL = 3mA.

What is the power dissipation of the ADS1114 when VDD = 5.0V?

The power dissipation is 900 µW when VDD = 5.0V.

What is the quiescent current of the ADS1114 in power-down mode at TA = 25°C?

The quiescent current is 500 nA.

What is the maximum sample rate of the ADS1114?

The maximum sample rate is 860 Hz.