Texas Instruments ADS1114L Handleiding

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ADS111xL Ultra-Small, Low-Power, 16-Bit, 860-SPS ADCs With PGA, Comparator, and

1.8-V I

2

C Bus Voltage Support

1 Features

•Supply voltage range: 2.0 V to 3.6 V

•Low current consumption:

–150 μA (continuous-conversion mode)

•Programmable data rate:

8 SPS to 860 SPS

•Single-cycle settling

•Internal low-drift voltage reference

•Internal oscillator

•Digital comparator with ALERT output pin

•I

2

C interface:

–Four pin-selectable address

–Compatible with 1.8-V I

2

C bus voltages

•Operating temperature range:

––40°C to +125°C

2 Applications

•General system monitoring:

–Supply-voltage monitoring

–Current measurement

–Temperature measurement

•Wearables and personal electronics

Device Information

PART NUMBERINPUT CHANNELSFEATURES

(1)

ADS1114L1 DE (1 SE)PGA, comparator

ADS1115L2 DE (4 SE)PGA, comparator

(1)See the Device Comparison Table for details.

3 Description

The ADS1114L and ADS1115L (ADS111xL) are

precision, low-power, 16-bit, I

2

C-compatible, analog-

to-digital converters (ADCs) offered in ultra-small, 12-

pin DSBGA and a 10-pin VSSOP packages. The

ADS111xL incorporate a low-drift voltage reference

and an oscillator. The ADS111xL also incorporate

a programmable gain amplifier (PGA) and a

digital comparator. These features, along with the

device wide operating supply range, are useful for

power- and space-constrained, sensor measurement

applications.

The ADS111xL perform conversions at data rates up

to 860 samples per second (SPS). The PGA offers

input ranges from ±256 mV to ±6.144 V, allowing

precise large- and small-signal measurements. The

ADS1115L features an input multiplexer (MUX) that

allows two differential or four single-ended input

measurements. Use the digital comparator in the

ADS111xL for under- and overvoltage detection.

Package Information

PART NUMBERPACKAGE

(1)

PACKAGE SIZE

(2)

ADS111xL

YCJ (DSBGA, 12)1.47 mm × 1.03 mm

DGS (VSSOP, 10)3.00 mm × 4.9 mm

(1)For all available packages, see Mechanical, Packaging, and

Orderable Information.

(2)The package size (length × width) is a nominal value and

includes pins, where applicable.

1.8 V

3.3 V

ADS1115L

AIN0

AIN1

AIN3

Mux

PGA

16-Bit ΔƩ

ADC

Voltage

Reference

GND

VDD

I

2

C

Interface

SDA

ADDR

SCL

AIN2

3.3 V

I

2

C Bus

Analog Output

Temperature Sensor IC

Current Sense

Amplifier

R

SHUNT

Power Supply

Monitoring

3.3 V

ALERT/

RDY

R

Bias

Thermistor

Comparator

Oscillator

System-Monitoring Application Example

ADS1114L, ADS1115L

SBASAV5 – DECEMBER 2023

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

Product specificaties