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AIC111RHB

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Texas Instruments Audio Interface ICs, VQFN-32(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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AIC111RHB

Texas Instruments · Audio Interface ICs · VQFN-32(5x5)

AIC111RHB from Texas Instruments, in a VQFN-32(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 AVSS1 power_in Ground return for ADC analog circuits.
2 AVSS2 power_in Ground return for PGAC and MIC power analog circuits.
3 AVINP input Noninverting differential analog input, coupled through an external 1-µF capacitor to the external microphone output.
4 AVINM input Inverting differential analog signal input, coupled through an external 1-µF capacitor to ground.
5 VMID_FILT output Midsupply AC ground reference filter pin, bypassed by a 1-µF capacitor connected to ground.
6 MIC_BIAS output Source connection of the external microphone source-follower preamp; provides 29.1 kΩ to AVSS2.
7 VREF power_in Bandgap reference output, bypassed by an external 1-µF VREF filter capacitor.
8 MIC_VSUP output Supply voltage for the external microphone source-follower preamp, bypassed with an external 0.1-µF capacitor.
9 SUB_VSS power_in Isolated substrate VSS for analog circuits.
10 VDD_OSC power_in Power pin for the internal oscillator.
11 VSS_OSC power_in Ground return for the internal oscillator.
12 HB_VSS_P power_in Ground return for the noninverting stack of the H-bridge amplifier.
13 VOUT_P output Noninverting H-bridge output voltage.
14 HB_VDD power_in Power pin for the H-bridge amplifier.
15 VOUT_M output Inverting H-bridge output voltage.
16 HB_VSS_M power_in Ground return for the inverting stack of the H-bridge amplifier.
17 IMODE input Digital interface format selection pin.
18 MCLK output 5-MHz output clock for external DSP/µC.
19 DVSS1 power_in Ground return for digital circuits.
20 DVDD power_in Power pin for digital circuits.
21 BUF_DVDD power_in Power pin for interface digital I/O circuits.
22 BUF_DVSS power_in Ground return for interface digital I/O circuits.
23 SDOUT output Digital interface serial data output pin.
24 SDIN input Digital interface serial data input pin.
25 FRAME output Digital interface serial data framer.
26 SCLK output Digital interface serial shift clock.
27 DVSS2 power_in Ground return for digital circuits.
28 RST/LBM output Provides external reset and low battery monitor.
29 EXT_RST/PWDN input Powers down all analog blocks and holds digital outputs low until the internal system is up.
30 AVDD power_in VDD power pin for analog circuits.
31 VRFILT output Positive ADC reference pin, bypassed with a 1-µF capacitor to AVSS_REF.
32 AVSS_REF power_in Ground for ADC voltage reference.
33 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package VQFN-32(5x5)
Category Interface
Pins 33

CAD (KiCad official)

  • Symbol: AIC111RHB
  • Footprint: Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm
  • 3D model: VQFN-32(5x5) (KiCad packages3D, STEP)
  • 3D model files: aic111rhb-etched.step / aic111rhb-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); aic111rhb.step / aic111rhb.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (34 pp, sha256 5b460cf8a96d4d42, retrieved 2026-10-08, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF