component
ADS7949SRTER
Public Made by Adomby adom
Texas Instruments Analog To Digital Converters (ADC), WQFN-16-EP(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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README
markdownADS7949SRTER
Texas Instruments · Analog To Digital Converters (ADC) · WQFN-16-EP(3x3)
ADS7949SRTER 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 | GND | power_in | Analog/digital power supply ground; all analog and digital signals are referred with respect to this pin. |
| 2 | AVDD | power_in | Analog ADC power supply; recommended range is 2.7 V to 5.5 V with 3.3 V nominal. |
| 3 | REF | input | Analog ADC positive reference input; decouple this pin with REFGND. |
| 4 | REFGND | power_in | Analog reference return; short to the analog ground plane. |
| 5 | AIN0P | input | Positive analog input for channel 0. |
| 6 | AIN0N | input | Negative analog input for channel 0; the allowable signal swing on this pin is ±0.2 V and this pin can be grounded. |
| 7 | AIN1N | input | Negative analog input for channel 1; the allowable signal swing on this pin is ±0.2 V and this pin can be grounded. |
| 8 | AIN1P | input | Positive analog input for channel 1. |
| 9 | NC | unconnected | Not connected internally; TI recommends externally shorting this pin to GND. |
| 10 | NC | unconnected | Not connected internally; TI recommends externally shorting this pin to GND. |
| 11 | CH SEL | input | Selects the analog input channel (low = channel 0, high = channel 1); TI recommends changing the channel within a one-clock window starting half a clock after the CS falling edge so the multiplexer output settles before sample start. |
| 12 | PDEN | input | Enables the power-down feature if this pin is high at the CS rising edge. |
| 13 | CS | input | Active-low chip-select signal. |
| 14 | SCLK | input | Serial SPI clock input. |
| 15 | SDO | output | Serial data output. |
| 16 | DVDD | power_in | Digital I/O supply; range is 1.65 V to AVDD per the recommended operating conditions. |
| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WQFN-16-EP(3x3) |
| Category | Data Acquisition |
| Pins | 17 |
CAD (KiCad official)
- Symbol:
ADS7949SRTER - 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:
ads7949srter-etched.step/ads7949srter-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ads7949srter.step/ads7949srter.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (41 pp, sha256
ec9cbb036b993ad2, retrieved 2026-10-08, tier: lcsc) - 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).