component
ADS9224RIRHBR
Public Made by Adomby adom
Texas Instruments Analog To Digital Converters (ADCs), QFN-32-EP(5x5). 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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README
markdownADS9224RIRHBR
Texas Instruments · Analog To Digital Converters (ADCs) · QFN-32-EP(5x5)
ADS9224RIRHBR from Texas Instruments, in a QFN-32-EP(5x5). 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 | AINP_A | passive | Positive analog input for channel A. |
| 2 | AINM_A | passive | Negative analog input for channel A. |
| 3 | REFby2 | passive | REFby2 buffer output; connect a 1-µF decoupling capacitor between pin 3 and pin 4. |
| 4 | GND | power_in | Ground; the datasheet gives this as the decoupling return for pins 3 and 5. |
| 5 | REFOUT | passive | Internal reference output; connect a 1-µF decoupling capacitor between pin 5 and pin 4. |
| 6 | NC | unconnected | No external connection. |
| 7 | AINM_B | passive | Negative analog input for channel B. |
| 8 | AINP_B | passive | Positive analog input for channel B. |
| 9 | REFM_B | passive | Negative output of reference buffer B and negative reference input for ADC_B; externally connect to device GND. |
| 10 | REFP_B | passive | Positive output of reference buffer B and positive reference input for ADC_B. |
| 11 | GND | power_in | Ground; the datasheet gives this as the decoupling return for pin 12. |
| 12 | AVDD | power_in | Analog power-supply pin; connect a 1-µF decoupling capacitor between pin 12 and pin 11. |
| 13 | CONVST | input | Conversion start input; a CONVST rising edge starts the conversion for ADC_A and ADC_B. |
| 14 | CS | input | Active-low chip-select input; the SDO-x pins go to Hi-Z when CS is high. |
| 15 | SDI | input | Serial data input pin used to program the device registers. |
| 16 | SCLK | input | Clock input pin for the serial interface. |
| 17 | SDO-7/3B | output | SPI mode data output 3 for channel B; in parallel byte mode this is the MSB of the data byte. |
| 18 | SDO-6/2B | output | SPI mode data output 2 for channel B; in parallel byte mode this is LSB+6. |
| 19 | SDO-5/1B | output | SPI mode data output 1 for channel B; in parallel byte mode this is LSB+5. |
| 20 | SDO-4/0B | output | SPI mode data output 0 for channel B; in parallel byte mode this is LSB+4. |
| 21 | SDO-3/3A | output | SPI mode data output 3 for channel A; in parallel byte mode this is LSB+3. |
| 22 | SDO-2/2A | output | SPI mode data output 2 for channel A; in parallel byte mode this is LSB+2. |
| 23 | SDO-1/1A | output | SPI mode data output 1 for channel A; in parallel byte mode this is LSB+1. |
| 24 | SDO-0/0A | output | SPI mode data output 0 for channel A; in parallel byte mode this is the LSB of the data byte. |
| 25 | READY/STROBE | output | Indicates data ready or provides a strobe output for data capture. |
| 26 | PD/RST | input | Asynchronous reset or power-down input; see the Reset or Power-Down section. |
| 27 | GND | power_in | Ground; the datasheet gives this as the decoupling return for pin 28. |
| 28 | DVDD | power_in | Interface power-supply pin; connect a 1-µF decoupling capacitor between pin 27 and pin 28. |
| 29 | AVDD | power_in | Analog power-supply pin; connect a 1-µF decoupling capacitor between pin 29 and pin 30. |
| 30 | GND | power_in | Ground; the datasheet gives this as the decoupling return for pin 29. |
| 31 | REFP_A | passive | Positive output of reference buffer A and positive reference input for ADC_A; connect a 10-µF decoupling capacitor at this pin. |
| 32 | REFM_A | passive | Negative output of reference buffer A and negative reference input for ADC_A; externally connect to device GND. |
| 33 | Thermal Pad | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | QFN-32-EP(5x5) |
| Category | ADC/DAC/Data Conversion |
| Pins | 33 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| AVDD to GND | AVDD | -0.3 | 6 | V | 5 | ||
| DVDD to GND | DVDD | -0.3 | 6 | V | 5 | ||
| REFM_A, REFM_B | REFM_x | -0.1 | 0.1 | V | GND, 0.1 to GND + 0.1 | 5 | |
| Input or output current to any pin except power-supply pin | -10 | 10 | mA | 5 | |||
| Junction temperature | TJ | 150 | °C | 5 | |||
| Storage temperature | Tstg | -65 | 150 | °C | 5 | ||
| ESD HBM | V(ESD) | -2000 | 2000 | V | HBM, all pins | 5 | |
| ESD CDM | V(ESD) | -500 | 500 | V | CDM, all pins | 5 | |
| Analog supply voltage | AVDD | 4.5 | 5 | 5.5 | V | 5 | |
| Digital supply voltage operating range | DVDD | 1.65 | 3.3 | 5.5 | V | 5 | |
| Digital supply voltage for SCLK > 20 MHz | DVDD | 2.35 | 3.3 | 5.5 | V | SCLK > 20 MHz | 5 |
| Ambient temperature | TA | -40 | 125 | °C | 5 | ||
| Junction-to-ambient thermal resistance | RθJA | 29 | °C/W | RHB (VQFN) 32 pins | 5 | ||
| Junction-to-case (top) thermal resistance | RθJC(top) | 17.1 | °C/W | 5 | |||
| Junction-to-board thermal resistance | RθJB | 9.4 | °C/W | 5 | |||
| Junction-to-case (bottom) thermal resistance | RθJC(bot) | 0.8 | °C/W | 5 | |||
| Full-scale input voltage (AINP_x - AINM_x) | FSR | -4.096 | 4.096 | V | 6 | ||
| Absolute input voltage | VIN | 0 | 4.096 | V | AINP_x or AINM_x to GND | 6 | |
| Common-mode input range | VCM | 1.848 | 2.248 | V | 6 | ||
| Analog input leakage current | IIN | -1 | 1 | µA | 6 | ||
| REFOUT voltage | VREFOUT | 2.496 | 2.5 | 2.504 | V | 6 | |
| VREFOUT drift | ΔVREF/ΔT | 5.5 | 15 | ppm/°C | 6 | ||
| Reference buffer output offset | EO-REFBUF | -1 | 0.2 | 1 | mV | 6 | |
| Reference buffer output mismatch | VREFP_A - VREFP_B | -500 | 50 | 500 | µV | 6 | |
| Reference buffer output capacitor | CREFP_x | 7 | 10 | 27 | µF | For specified performance, between each pair of REFP_x and REFM_x | 6 |
| REFby2 output voltage | VREFby2 | 2.043 | 2.048 | 2.053 | V | EN_REFBY2_OFFSET = 0 | 6 |
| REFby2 output voltage | VREFby2 | 2.133 | 2.148 | 2.163 | V | EN_REFBY2_OFFSET = 1 | 6 |
| REFby2 output current capability | IREFby2 | -3 | 3 | mA | 6 | ||
| Analog supply current | IAVDD | 24.3 | 30.4 | mA | fSAMPLE = 3 MSPS | 7 | |
| Resolution, no missing codes | 16 | Bits | 7 | ||||
| Differential nonlinearity | DNL | -0.5 | 0.2 | 0.5 | LSB | 7 | |
| Integral nonlinearity | INL | -2 | 1 | 2 | LSB | 7 | |
| Offset error | EO | -9 | 1 | 9 | LSB | 7 | |
| Cummulative gain error for ADC_x and REFBUF_x | GE | -0.02 | 0.01 | 0.02 | %FSR | 7 | |
| Signal-to-noise ratio | SNR | 91.3 | 94.5 | dB | fIN = 2 kHz | 7 | |
| Sampling rate, ADS9224R | fSAMPLE | 3 | MSPS | 9 | |||
| Acquisition time | tACQ | 140 | ns | 9 | |||
| Serial clock frequency, SPI single data rate | fCLK | 60 | MHz | SPI protocols with single data rate | 9 | ||
| Data ready time, zone 1, ADS9224R | tDRDY | 315 | ns | Zero cycle latency (zone 1 transfer) for ADS9224R | 10 | ||
| Analog supply current, no conversion | IAVDD | 7.8 | mA | AVDD = 5 V, no conversion | 7 | ||
| Digital supply current | IDVDD | 2.8 | mA | fSAMPLE = 3 MSPS, CSDO-x/y = 10 pF | 7 |
CAD (KiCad official)
- Symbol:
ADS9224RIRHBR - Footprint:
Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm - 3D model: QFN-32-EP(5x5) (KiCad packages3D, STEP)
- 3D model files:
ads9224rirhbr-etched.step/ads9224rirhbr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ads9224rirhbr.step/ads9224rirhbr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (66 pp, sha256
64ef950ba03690cd, retrieved 2026-10-31, tier: manufacturer) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).