component

ADS7138IRTER

Public Made by Adom

by adom

Texas Instruments Analog To Digital Converters (ADCs), WQFN-16-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentadc-dac-data conversionads7138irterfactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
ads7138irter / README.md
History Download
Ray Publish 0.1.0 67e22a6 7d ago

ADS7138IRTER

Texas Instruments · Analog To Digital Converters (ADCs) · WQFN-16-EP(3x3)

ADS7138IRTER from Texas Instruments, in a WQFN-16-EP(3x3). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 AIN2/GPIO2 bidirectional Channel 2; configurable as either an analog input (default) or a general-purpose input/output (GPIO).
2 AIN3/GPIO3 bidirectional Channel 3; configurable as either an analog input (default) or a GPIO.
3 AIN4/GPIO4 bidirectional Channel 4; configurable as either an analog input (default) or a GPIO.
4 AIN5/GPIO5 bidirectional Channel 5; configurable as either an analog input (default) or a GPIO.
5 AIN6/GPIO6 bidirectional Channel 6; configurable as either an analog input (default) or a GPIO.
6 AIN7/GPIO7 bidirectional Channel 7; configurable as either an analog input (default) or a GPIO.
7 AVDD power_in Analog supply input (2.35 V to 5.5 V), also used as the ADC reference voltage; connect a 1-µF decoupling capacitor to GND.
8 DECAP passive Connect a 1-µF decoupling capacitor between DECAP and GND for the internal power supply.
9 GND power_in Ground for the power supply; all analog and digital signals are referred to this pin voltage.
10 DVDD power_in Digital I/O supply voltage (1.65 V to 5.5 V); connect a 1-µF decoupling capacitor to GND.
11 ADDR input Input for selecting the I2C address; connect a resistor from DECAP or GND to select one of eight addresses.
12 ALERT output Open-drain (default) or push-pull digital output for the digital comparator.
13 SCL input Serial clock input for the I2C interface.
14 SDA bidirectional Serial data input or output for the I2C interface.
15 AIN0/GPIO0 bidirectional Channel 0; configurable as either an analog input (default) or a general-purpose input/output (GPIO).
16 AIN1/GPIO1 bidirectional Channel 1; configurable as either an analog input (default) or a GPIO.
17 Thermal pad power_in Exposed thermal pad; connect to GND.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package WQFN-16-EP(3x3)
Category ADC/DAC/Data Conversion
Pins 17

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Differential nonlinearity DNL -0.75 0.45 0.75 LSB 6
Integral nonlinearity INL -1.5 0.5 1.5 LSB 6
Input offset error V(OS) -2 0.3 2 LSB Post offset calibration 6
Gain error GE -0.065 0.05 0.65 %FSR 6
SINAD AVDD = 5 V SINAD 70 72.8 dB AVDD = 5 V, fIN = 2 kHz 6
SINAD AVDD = 3 V SINAD 69.8 72.4 dB AVDD = 3 V, fIN = 2 kHz 6
SNR AVDD = 5 V SNR 71.2 73 dB AVDD = 5 V, fIN = 2 kHz 6
SNR AVDD = 3 V SNR 70.5 72.5 dB AVDD = 3 V, fIN = 2 kHz 6
Decoupling capacitor on DECAP pin CDECAP 0.1 1 4.7 µF 6
I2C output low logic level VOL 0 0.4 V Sink current = 2 mA, DVDD > 2 V 6
I2C output low logic level, DVDD ≤ 2 V VOL 0 V Sink current = 2 mA, DVDD ≤ 2 V 6
Low-level output current, standard and fast mode IOL 3 mA VOL = 0.4 V, standard and fast mode 6
Low-level output current, fast mode IOL 6 mA VOL = 0.6 V, fast mode 6
Low-level output current, fast mode plus IOL 20 mA VOL = 0.4 V, fast mode plus 6
GPIO input leakage current 10 100 nA GPIO configured as input 6
GPIO output high source current IOH 5 mA VOH > 0.7 x AVDD 6
GPIO output low sink current IOL 5 mA VOL < 0.3 x AVDD 6
ALERT output high source current IOH 5 mA VOH > 0.7 x DVDD 6
ALERT output low sink current IOL 5 mA VOL < 0.3 x DVDD 7
Analog supply current, I2C high-speed mode IAVDD 150 210 µA I2C high-speed mode, AVDD = 5 V 7
Analog supply current, I2C fast mode plus IAVDD 45 85 µA I2C fast mode plus, AVDD = 5 V 7
Analog supply current, I2C fast mode IAVDD 28 46 µA I2C fast mode, AVDD = 5 V 7
Analog supply current, I2C standard mode IAVDD 12 26 µA I2C standard mode, AVDD = 5 V 7
Analog supply current, no conversion IAVDD 7 20 µA No conversion, AVDD = 5 V 7
SCL clock frequency, standard/fast/fast mode plus fSCL 1 MHz Standard, fast, and fast mode plus 7
SCL clock frequency, high-speed mode fSCL 3.4 MHz High-speed mode 7
START setup time for repeated start tSUSTA 260 ns Standard, fast, and fast mode plus 7
START hold time tHDSTA 260 ns Standard, fast, and fast mode plus 7
Clock low period tLOW 500 ns Standard, fast, and fast mode plus 7
Clock high period tHIGH 260 ns Standard, fast, and fast mode plus 7
Data in setup time tSUDAT 50 ns Standard, fast, and fast mode plus 7
Data in hold time tHDDAT 0 ns Standard, fast, and fast mode plus 7
SCL rise time tR 120 ns Standard, fast, and fast mode plus 7
SCL fall time tF 120 ns Standard, fast, and fast mode plus 7
STOP condition hold time tSUSTO 260 ns Standard, fast, and fast mode plus 7
Bus free time before new transmission tBUF 500 ns Standard, fast, and fast mode plus 7
START setup time for repeated start, high-speed tSUSTA 160 ns High-speed mode 7
Clock low period, high-speed tLOW 160 ns High-speed mode 7
Clock high period, high-speed tHIGH 60 ns High-speed mode 7
Acquisition time tACQ 300 ns 7
SCL low to SDA data out valid tVDDATA 450 ns Standard, fast, and fast mode plus 7
SCL low to SDA acknowledge time tVDACK 450 ns Standard, fast, and fast mode plus 7
Clock stretch time in one-shot conversion mode tSTRETCH 1400 ns Standard, fast, and fast mode plus 7
Power-up time for device tPU 5 ms AVDD ≥ 2.35 V 8
Delay time, RST bit to reset complete tRST 5 ms RST bit = 1b to device reset complete 8
ALERT high period tALERT_HI 50 150 ns ALERT_LOGIC[1:0] = 1x 8
ALERT low period tALERT_LO 50 150 ns ALERT_LOGIC[1:0] = 1x 8
DVDD to GND DVDD -0.3 5.5 V 5
AVDD to GND AVDD -0.3 5.5 V 5
ADDR voltage ADDR 2.1 V GND, 0.3 min 5
Digital inputs 5.5 V GND, 0.3 min 5
Current through any pin except supply pins -10 10 mA 5
Junction temperature TJ -40 125 °C 5
Storage temperature Tstg -60 150 °C 5
ESD HBM V(ESD) -2000 2000 V Human body model, all pins 5
ESD CDM V(ESD) -500 500 V Charged device model, all pins 5
Analog supply voltage AVDD 2.35 3.3 5.5 V 5
Digital supply voltage DVDD 1.65 3.3 5.5 V 5
Ambient temperature TA -40 25 125 °C 5
Junction-to-ambient thermal resistance RθJA 49.7 °C/W RTE (WQFN) 16 pins 5

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts copper voltage for the ADS7138. Place the decoupling capacitor for AVDD close to the device AVDD and GND pins and connect the decoupling capacitor to the device pins with thick copper tracks. 73

CAD (KiCad official)

  • Symbol: ADS7138IRTER
  • Footprint: Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm
  • 3D model: WQFN-16-EP(3x3) (KiCad packages3D, STEP)
  • 3D model files: ads7138irter-etched.step / ads7138irter-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ads7138irter.step / ads7138irter.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (86 pp, sha256 2d320ec54ede6133, retrieved 2026-10-26, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF