component
ADS8904BRGET
Public Made by Adomby adom
Texas Instruments Analog To Digital Converters (ADC), VQFN-24-EP(4x4). 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
markdownADS8904BRGET
Texas Instruments · Analog To Digital Converters (ADC) · VQFN-24-EP(4x4)
ADS8904BRGET from Texas Instruments, in a VQFN-24-EP(4x4). 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 | CONVST | input | Conversion start input; a CONVST rising edge moves the device from the ACQ state to the CNV state. |
| 2 | RST | input | Asynchronous active-low reset; a low pulse on RST returns all configuration registers to their default values. |
| 3 | REFIN | passive | Reference voltage input; VREF ranges from 2.5 V up to RVDD - 0.3 V per the recommended operating conditions. |
| 4 | REFM | passive | Reference ground potential for the reference input. |
| 5 | REFBUFOUT | passive | Internal reference buffer output or external reference input; short pin 5 to pin 7. |
| 6 | NC | unconnected | No connection; float this pin. |
| 7 | REFBUFOUT | passive | Internal reference buffer output or external reference input; short pin 7 to pin 5. |
| 8 | REFM | passive | Reference ground potential, second REFM pin. |
| 9 | AINP | passive | Positive analog input of the fully differential analog input. |
| 10 | AINM | passive | Negative analog input of the fully differential analog input. |
| 11 | GND | power_in | Ground. |
| 12 | RVDD | power_in | Analog power supply; 3 V minimum, 5 V nominal, 5.5 V maximum per the recommended operating conditions. |
| 13 | DECAP | power_out | Decoupling capacitor connection for the internal power supply; short pin 13 to pin 14. |
| 14 | DECAP | power_out | Decoupling capacitor connection for the internal power supply; short pin 14 to pin 13. |
| 15 | GND | power_in | Ground. |
| 16 | DVDD | power_in | Interface digital supply; 1.65 V to 5.5 V operating range per the recommended operating conditions. |
| 17 | SDO-3 | output | Serial communication data output 3; goes Hi-Z when CS is high. |
| 18 | SDO-2 | output | Serial communication data output 2; goes Hi-Z when CS is high. |
| 19 | SDO-1 | output | Serial communication data output 1; goes Hi-Z when CS is high. |
| 20 | SDO-0 | output | Serial communication data output 0; goes Hi-Z when CS is high. |
| 21 | RVS | output | Multifunction output; with CS high it reflects the internal ADCST status, and with CS low its behavior depends on the output protocol. |
| 22 | SDI | input | Serial data input used to feed data or commands into the device. |
| 23 | SCLK | input | Clock input for the serial interface; all system-synchronous transfers are timed to SCLK. |
| 24 | CS | input | Active-low chip select; the device takes control of the data bus when CS is low. |
| 25 | Thermal Pad | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VQFN-24-EP(4x4) |
| Category | Data Acquisition |
| Pins | 25 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Analog supply voltage (RVDD to AGND) | RVDD | 3 | 5 | 5.5 | V | 6 | |
| Digital supply voltage operating (DVDD to AGND) | DVDD | 1.65 | 3 | 5.5 | V | Operating | 6 |
| Digital supply voltage specified throughput (DVDD to AGND) | DVDD | 2.35 | 3 | 5.5 | V | Specified throughput | 6 |
| Specified free-air operating temperature | TA | -40 | 25 | 125 | °C | 6 | |
| External series resistor | RESR | 0 | 1 | 1.3 | Ω | 6 | |
| External ceramic decoupling capacitor | CREFBUF | 10 | 22 | µF | 6 | ||
| RVDD to GND | -0.3 | 7 | V | 6 | |||
| DVDD to GND | -0.3 | 7 | V | 6 | |||
| REFM to GND | -0.1 | 0.1 | V | 6 | |||
| Analog input (AINP, AINM) to RVDD and GND | -130 | 130 | mA | 6 | |||
| Operating free-air temperature | TA | -40 | 125 | °C | 6 | ||
| Storage temperature | Tstg | -65 | 150 | °C | 6 | ||
| Junction-to-ambient thermal resistance | RθJA | 31.9 | °C/W | RGE (VQFN) 24 pins | 6 | ||
| Junction-to-case (top) thermal resistance | RθJC(top) | 29.9 | °C/W | RGE (VQFN) 24 pins | 6 | ||
| Junction-to-board thermal resistance | RθJB | 8.9 | °C/W | RGE (VQFN) 24 pins | 6 | ||
| Junction-to-case (bottom) thermal resistance | RθJC(bot) | 2 | °C/W | RGE (VQFN) 24 pins | 7 | ||
| Integral nonlinearity TA = 0°C to +60°C | INL | -2 | 1 | 2 | ppm | TA = 0°C to +60°C | 8 |
| Integral nonlinearity TA = -40°C to +85°C | INL | -2.75 | 1 | 2.75 | ppm | TA = -40°C to +85°C | 8 |
| Integral nonlinearity TA = -40°C to +125°C | INL | -3.75 | 1 | 3.75 | ppm | TA = -40°C to +125°C | 8 |
| Differential nonlinearity | DNL | -0.5 | 0.2 | 0.5 | ppm | 8 | |
| Input offset error TA = 25°C | E(IO) | -11.5 | 3 | 11.5 | ppm | TA = 25°C | 8 |
| Input offset error TA = -40°C to +125°C | E(IO) | -60 | 10 | 60 | ppm | TA = -40°C to +125°C | 8 |
| Gain error | GE | -0.03 | 0.005 | 0.03 | %FSR | EN_MARG = 0b | 8 |
| Reference buffer offset voltage (VREFBUFOUT, VREF) | V(RO) | -250 | 250 | µV | With EN_MARG = 0b, TA = 25°C | 8 | |
| Margining range | -4.5 | 4.5 | mV | With EN_MARG = 1b | 8 | ||
| Reference input current | IREF | 0.1 | 1 | µA | VREF = 5 V | 8 | |
| Common-mode rejection ratio | CMRR | 80 | dB | dc to 20 kHz | 8 | ||
| First output code deviation for burst-mode data acquisition | -3 | 3 | TNS | See Section 6.3.2 | 8 | ||
| Input absolute voltage (AINP and AINM to REFM) | VIN | 0 | V | AINP and AINM to REFM; maximum is VREF | 8 | ||
| Signal-to-noise + distortion | SINAD | 101.8 | 103.9 | dB | fIN = 2 kHz, TA = -40°C to +85°C | 9 | |
| Signal-to-noise + distortion | SINAD | 101.3 | 103.9 | dB | fIN = 2 kHz, TA = -40°C to +125°C | 9 | |
| Signal-to-noise ratio | SNR | 102 | 104.5 | dB | fIN = 2 kHz, TA = -40°C to +85°C | 9 | |
| Signal-to-noise ratio | SNR | 101.5 | 104.5 | dB | fIN = 2 kHz, TA = -40°C to +125°C | 9 | |
| Input current (digital inputs) | 0.01 | 0.1 | µA | 9 | |||
| Analog supply current ADS8900B | IRVDD | 4.2 | 5.8 | mA | ADS8900B at RVDD = 5 V, 1-MSPS | 9 | |
| Power dissipation ADS8900B | PRVDD | 21 | 29 | mW | ADS8900B at RVDD = 5 V, 1-MSPS | 9 | |
| Sampling frequency ADS8900B | fcycle | 1000 | kHz | ADS8900B | 10 | ||
| Conversion time ADS8900B | tconv | 600 | 670 | ns | ADS8900B | 11 |
CAD (KiCad official)
- Symbol:
ADS8904BRGET - Footprint:
Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm - 3D model: VQFN-24-EP(4x4) (KiCad packages3D, STEP)
- 3D model files:
ads8904brget-etched.step/ads8904brget-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ads8904brget.step/ads8904brget.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (79 pp, sha256
d29e80d65a5d0f64, retrieved 2026-11-05, 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).