component
ADS7028IRTER
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
markdownADS7028IRTER
Texas Instruments · Analog To Digital Converters (ADCs) · WQFN-16(3x3)
ADS7028IRTER 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 can be configured as either an analog input (default), digital input, or digital output. |
| 2 | AIN3/GPIO3 | bidirectional | Channel 3 can be configured as either an analog input (default), digital input, or digital output. |
| 3 | AIN4/GPIO4 | bidirectional | Channel 4 can be configured as either an analog input (default), digital input, or digital output. |
| 4 | AIN5/GPIO5 | bidirectional | Channel 5 can be configured as either an analog input (default), digital input, or digital output. |
| 5 | AIN6/GPIO6 | bidirectional | Channel 6 can be configured as either an analog input (default), digital input, or digital output. |
| 6 | AIN7/GPIO7 | bidirectional | Channel 7 can be configured as either an analog input (default), digital input, or digital output. |
| 7 | AVDD | power_in | Analog supply input, also used as the reference voltage to the ADC; connect a 1-µF decoupling capacitor to GND. |
| 8 | DECAP | power_out | Connect a 1-µF decoupling capacitor to 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; connect a 1-µF decoupling capacitor to GND. |
| 11 | CS | input | Active-low chip-select input; the device takes control of the data bus when CS is low, starts converting the active input channel on the rising edge of CS, and SDO goes hi-Z when CS is high. |
| 12 | SDO | output | Serial data out for the device. |
| 13 | SCLK | input | Serial clock for the SPI interface. |
| 14 | SDI | input | Serial data in for the device. |
| 15 | AIN0/GPIO0 | bidirectional | Channel 0 can be configured as either an analog input (default), digital input, or digital output. |
| 16 | AIN1/GPIO1 | bidirectional | Channel 1 can be configured as either an analog input (default), digital input, or digital output. |
| 17 | Thermal pad | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
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 | -0.3 | 5.5 | V | 5 | |||
| AVDD to GND | -0.3 | 5.5 | V | 5 | |||
| Digital input to GND | 5.5 | V | 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 | ||
| AVDD analog supply voltage | AVDD | 2.35 | 3.3 | 5.5 | V | 5 | |
| DVDD digital supply voltage | DVDD | 1.65 | 3.3 | 5.5 | V | 5 | |
| Full-scale input range (AINX - GND) | FSR | 0 | V | 5 | |||
| Absolute input voltage (AINX - GND) | VIN | -0.1 | V | 5 | |||
| Ambient temperature | TA | -40 | 25 | 85 | ℃ | 5 | |
| Differential nonlinearity | DNL | -0.75 | 0.3 | 0.75 | LSB | 6 | |
| Integral nonlinearity | INL | -1.3 | 0.5 | 1.3 | LSB | 6 | |
| Input offset error | V(OS) | -2 | 0.3 | 2 | LSB | Post offset calibration | 6 |
| Gain error | GE | -0.075 | 0.05 | 0.075 | %FSR | 6 | |
| Input offset thermal drift | -1 | 1 | ppm/°C | Post offset calibration | 6 | ||
| Gain error thermal drift | -1 | 1 | ppm/°C | 6 | |||
| Signal-to-noise + distortion ratio (SINAD) | SINAD | 70.2 | 72.9 | dB | AVDD = 5 V, fIN = 2 kHz | 6 | |
| Signal-to-noise + distortion ratio (SINAD) | SINAD | 70.2 | 72.7 | dB | AVDD = 3 V, fIN = 2 kHz | 6 | |
| Signal-to-noise ratio (SNR) | SNR | 71.2 | 73.1 | dB | AVDD = 5 V, fIN = 2 kHz | 6 | |
| Signal-to-noise ratio (SNR) | SNR | 70.5 | 72.9 | dB | AVDD = 3 V, fIN = 2 kHz | 6 | |
| Decoupling capacitor on DECAP pin | 0.22 | 1 | 4.7 | µF | 6 | ||
| SPI input high logic level | VIH | 5.5 | V | 6 | |||
| SPI input low logic level | VIL | -0.3 | V | 6 | |||
| SPI output low logic level | VOL | 0 | 0.4 | V | Sink current = 2 mA, DVDD > 2 V | 6 | |
| SPI output low logic level | VOL | 0 | V | Sink current = 2 mA, DVDD ≤ 2 V | 6 | ||
| GPIO input low logic level | VIL | -0.3 | V | 6 | |||
| GPIO input leakage current | 10 | 100 | nA | GPIO configured as input | 6 | ||
| GPIO output low logic level | VOL | 0 | V | ISINK = 2 mA | 6 | ||
| Analog supply current (full throughput, AVDD = 5 V) | IAVDD | 600 | 660 | µA | Full throughput, AVDD = 5 V | 6 | |
| Analog supply current (full throughput, AVDD = 3 V) | IAVDD | 560 | 610 | µA | Full throughput, AVDD = 3 V | 6 | |
| Analog supply current (no conversion, AVDD = 5 V) | IAVDD | 7 | 15 | µA | No conversion, AVDD = 5 V | 6 | |
| Resolution | 12 | bits | No missing codes | 6 | |||
| Sampling capacitance | CSH | 12 | pF | 6 | |||
| Total harmonic distortion | THD | -87.5 | dB | fIN = 2 kHz | 6 | ||
| Spurious-free dynamic range | SFDR | 91 | dB | fIN = 2 kHz | 6 | ||
| Isolation crosstalk | -100 | dB | fIN = 100 kHz | 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 | ||
| Junction-to-ambient thermal resistance | RθJA | 49.7 | °C/W | 5 | |||
| Junction-to-case (top) thermal resistance | RθJC(top) | 53.4 | °C/W | 5 | |||
| Junction-to-board thermal resistance | RθJB | 24.7 | °C/W | 5 | |||
| Junction-to-top characterization parameter | ΨJT | 1.3 | °C/W | 5 | |||
| Junction-to-board characterization parameter | ΨJB | 24.7 | °C/W | 5 | |||
| Junction-to-case (bottom) thermal resistance | RθJC(bot) | 9.3 | °C/W | 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 ADS7028. 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. | 77 |
CAD (KiCad official)
- Symbol:
ADS7028IRTER - Footprint:
Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm - 3D model: WQFN-16(3x3) (KiCad packages3D, STEP)
- 3D model files:
ads7028irter-etched.step/ads7028irter-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ads7028irter.step/ads7028irter.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (86 pp, sha256
794590931f11f1ca, retrieved 2026-10-28, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).