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PCM1770RGA
Public Made by Adomby adom
Texas Instruments ADCs/DACs - Special Purpose, VQFN-20(4.2x4.2). 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
markdownPCM1770RGA
Texas Instruments · ADCs/DACs - Special Purpose · VQFN-20(4.2x4.2)
PCM1770RGA from Texas Instruments, in a VQFN-20(4.2x4.2). 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 | DATA | input | Serial audio data input. |
| 2 | BCK | bidirectional | Serial bit clock that clocks the individual bits of DATA; it is an input from an external device in slave mode and is generated by the PCM1770 as an output in master mode. |
| 3 | PD | input | Reset input; when low, the PCM1770 is powered down and all mode control registers are reset to default settings. |
| 4 | AGND | power_in | Analog ground that is the return for VCC. |
| 5 | HGND | power_in | Analog ground that is the return for VHP. |
| 6 | VCOM | passive | Decoupling capacitor connection; an external 10-µF capacitor from this terminal to analog ground is required for noise filtering, and the voltage here is 0.5 VHP nominal. |
| 7 | HOUTR | output | R-channel analog signal output of the headphone amplifiers. |
| 8 | NC | unconnected | No connect. |
| 9 | HOUTL | output | L-channel analog signal output of the headphone amplifiers. |
| 10 | AIN | input | Monaural analog signal mixer input that can be mixed with the outputs of the L- and R-channel DACs. |
| 11 | VHP | power_in | Analog power supply for the headphone amplifier circuits; the voltage must be the same as VCC. |
| 12 | VCC | power_in | Power supply for all analog circuits except the headphone amplifier, specified at 1.6 V to 3.6 V. |
| 13 | MD | input | Mode control port serial data input that controls the operation mode of the PCM1770. |
| 14 | MC | input | Mode control port serial bit clock input that clocks the individual bits of MD. |
| 15 | MS | input | Mode control port select; the control port is active when this terminal is low. |
| 16 | SCKI | input | System clock input. |
| 17 | NC | unconnected | No connect. |
| 18 | NC | unconnected | No connect. |
| 19 | NC | unconnected | No connect. |
| 20 | LRCK | bidirectional | Left and right clock that determines the channel on DATA; its frequency must equal the audio sampling rate, and it is an input in slave mode or a device-generated output in master mode. |
| 21 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VQFN-20(4.2x4.2) |
| Category | Data Acquisition |
| Pins | 21 |
CAD (KiCad official)
- Symbol:
PCM1770RGA - Footprint:
Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm - 3D model: VQFN-20(4.2x4.2) (KiCad packages3D, STEP)
- 3D model files:
pcm1770rga-etched.step/pcm1770rga-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);pcm1770rga.step/pcm1770rga.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (40 pp, sha256
8389d91d0d41551d, retrieved 2026-10-07, tier: lcsc) - 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).