component
ADS7138QRTERQ1
Public Made by Adomby adom
Texas Instruments Analog To Digital Converters (ADCs), WQFN-16(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownADS7138QRTERQ1
Texas Instruments · Analog To Digital Converters (ADCs) · WQFN-16(3x3)
ADS7138QRTERQ1 from Texas Instruments, in a WQFN-16(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 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 device I2C address; connect a resistor from DECAP or GND to select one of eight addresses. |
| 12 | ALERT | output | Open-drain (default) or push-pull output for the digital comparator. |
| 13 | SCL | input | Serial clock 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(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 |
|---|---|---|---|---|---|---|---|
| DVDD to GND | DVDD | -0.3 | 5.5 | V | 6 | ||
| AVDD to GND | AVDD | -0.3 | 5.5 | V | 6 | ||
| ADDR pin voltage | ADDR | 2.1 | V | min is GND, 0.3 | 6 | ||
| Digital inputs | 5.5 | V | min is GND, 0.3 | 6 | |||
| Current through any pin except supply pins, SCL, and SDA | -10 | 10 | mA | 6 | |||
| Junction temperature | TJ | -40 | 125 | °C | 6 | ||
| Storage temperature | Tstg | -60 | 150 | °C | 6 | ||
| ESD HBM | V(ESD) | -2000 | 2000 | V | Human-body model, AEC Q100-002 | 6 | |
| ESD CDM corner pins | V(ESD) | -750 | 750 | V | AEC Q100-011; corner pins (1, 4, 5, 8, 9, 12, 13, 16) | 6 | |
| ESD CDM other pins | V(ESD) | -500 | 500 | V | AEC Q100-011; all other pins | 6 | |
| Analog supply voltage | AVDD | 2.35 | 3.3 | 5.5 | V | 6 | |
| Digital supply voltage | DVDD | 1.65 | 3.3 | 5.5 | V | 6 | |
| Full-scale input range | FSR | 0 | V | AINx, GND; max is AVDD | 6 | ||
| Absolute input voltage | VIN | -0.1 | V | AINx, GND; max is AVDD + 0.1 | 6 | ||
| Ambient temperature | TA | -40 | 25 | 125 | ℃ | 6 | |
| Junction-to-ambient thermal resistance | RθJA | 49.7 | °C/W | RTE (WQFN) 16 pins | 7 | ||
| Junction-to-case (top) thermal resistance | RθJC(top) | 53.4 | °C/W | RTE (WQFN) 16 pins | 7 | ||
| Junction-to-board thermal resistance | RθJB | 24.7 | °C/W | RTE (WQFN) 16 pins | 7 | ||
| Junction-to-top characterization parameter | ΨJT | 1.3 | °C/W | RTE (WQFN) 16 pins | 7 | ||
| Junction-to-board characterization parameter | ΨJB | 24.7 | °C/W | RTE (WQFN) 16 pins | 7 | ||
| Junction-to-case (bottom) thermal resistance | RθJC(bot) | 9.3 | °C/W | RTE (WQFN) 16 pins | 7 | ||
| Differential nonlinearity | DNL | -0.75 | 0.2 | 0.75 | LSB | typ printed ±0.2 | 8 |
| Integral nonlinearity | INL | -1.5 | 0.45 | 1.5 | LSB | typ printed ±0.45 | 8 |
| Input offset error | V(OS) | -2 | 0.4 | 2 | LSB | Post offset calibration; typ printed ±0.4 | 8 |
| Gain error | GE | -0.065 | 0.025 | 0.065 | %FSR | typ printed ±0.025 | 8 |
| Input offset thermal drift | 1 | ppm/°C | Post offset calibration; typ printed ±1 | 8 | |||
| Gain error thermal drift | 1 | ppm/°C | typ printed ±1 | 8 | |||
| SINAD | SINAD | 70 | 72.8 | dB | AVDD = 5 V, fIN = 2 kHz | 8 | |
| SINAD | SINAD | 69.8 | 72.4 | dB | AVDD = 3 V, fIN = 2 kHz | 8 | |
| SNR | SNR | 71.2 | 73 | dB | AVDD = 5 V, fIN = 2 kHz | 8 | |
| SNR | SNR | 70.5 | 72.5 | dB | AVDD = 3 V, fIN = 2 kHz | 8 | |
| Total harmonic distortion | THD | -85 | dB | fIN = 2 kHz | 8 | ||
| Spurious-free dynamic range | SFDR | 91 | dB | fIN = 2 kHz | 8 | ||
| Crosstalk | -100 | dB | 100-kHz signal applied on any OFF channel and measured on ON the channel | 8 | |||
| Sampling capacitance | CSH | 12 | pF | 8 | |||
| Decoupling capacitor on DECAP pin | CDECAP | 0.1 | 1 | 4.7 | µF | 8 | |
| Voltage output on DECAP pin | 1.8 | V | CDECAP = 1 µF | 8 | |||
| SCL/SDA input low logic level | VIL | -0.3 | V | All I2C modes; max is 0.3 x DVDD | 8 | ||
| SCL/SDA output low logic level | VOL | 0 | 0.4 | V | Sink current = 2 mA, DVDD > 2 V | 8 | |
| SCL/SDA low-level output current | IOL | 3 | mA | VOL = 0.4 V, standard and fast Mode | 8 | ||
| SCL/SDA low-level output current | IOL | 6 | mA | VOL = 0.6 V, fast mode | 8 | ||
| SCL/SDA low-level output current | IOL | 20 | mA | VOL = 0.4 V, fast mode plus | 8 | ||
| GPIO input low logic level | VIL | -0.3 | V | max is 0.3 x AVDD | 8 | ||
| GPIO input leakage current | 10 | 100 | nA | GPIO configured as input | 8 | ||
| GPIO output high source current | IOH | 5 | mA | VOH > 0.7 x AVDD | 8 | ||
| GPIO output low sink current | IOL | 5 | mA | VOL < 0.3 x AVDD | 8 | ||
| ALERT output high source current | IOH | 5 | mA | VOH > 0.7 x DVDD | 9 | ||
| ALERT output low sink current | IOL | 5 | mA | VOL < 0.3 x DVDD | 9 | ||
| Analog supply current | IAVDD | 130 | 210 | µA | I2C high-speed mode, AVDD = 5 V | 9 | |
| Analog supply current | IAVDD | 45 | 85 | µA | I2C fast mode plus, AVDD = 5 V | 9 | |
| Analog supply current | IAVDD | 25 | 46 | µA | I2C fast mode, AVDD = 5 V | 9 | |
| Analog supply current | IAVDD | 12 | 26 | µA | I2C standard mode, AVDD = 5 V | 9 | |
| Analog supply current | IAVDD | 7 | 20 | µA | No conversion, AVDD = 5 V | 9 | |
| Power-up time for device | tPU | 5 | ms | AVDD ≥ 2.35 V | 10 | ||
| Delay time; RST bit = 1b to device reset complete | tRST | 5 | ms | 10 | |||
| ALERT high period | tALERT_HI | 50 | 150 | ns | ALERT_LOGIC[1:0] = 1x | 10 | |
| ALERT low period | tALERT_LO | 50 | 150 | ns | ALERT_LOGIC[1:0] = 1x | 10 |
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-Q1. 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. | 80 |
CAD (KiCad official)
- Symbol:
ADS7138QRTERQ1 - Footprint:
Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm - 3D model: WQFN-16(3x3) (KiCad packages3D, STEP)
- 3D model files:
ads7138qrterq1-etched.step/ads7138qrterq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ads7138qrterq1.step/ads7138qrterq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (90 pp, sha256
de71831192632278, retrieved 2026-10-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-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).