Part Review and Datasheet Update

flux

Review complete. I created the detailed report here: Part Review: PCM1822IRTER.
Open items:
  • Datasheet URL was already populated, so I did not replace it.
  • Main mismatch: the datasheet shows WQFN-20 plus one exposed VSS thermal pad, but the symbol/footprint currently exposes five extra VSS pins/pads numbered 21–25.
  • Pin types/descriptions are mostly unset and should be populated from the datasheet.
Suggested next steps:
  1. Replace pins/pads 21–25 with one exposed pad terminal, pin 21 / VSS thermal pad.
  2. Update footprint to 20 perimeter pads + one central exposed pad per TI RTE0020A.
  3. Populate pin types and descriptions from the datasheet table.
  4. Optionally change Mount from Hardware to SMD / surface mount.
adrian95

adrian95

Populate all pin types and descriptions from the datasheet table.

flux

I’ll update each terminal’s Pin Type and Pin Description from the PCM1822 datasheet pin-function table, then verify the properties were applied.

flux

Populated and verified Pin Type and Pin Description for all 25 current terminals from the PCM1822 datasheet table.
Open items:
  • The current part still has five thermal-pad/VSS terminals numbered 21–25; the datasheet represents this as one exposed VSS thermal pad.
Suggested next steps:
  1. Normalize Pin Type values to Flux’s standard ERC options if desired.
  2. Replace VSS_5–VSS_9 with a single exposed-pad terminal/pad.
  3. Re-run the part review after the thermal pad cleanup.
Fix pad, types, review
Fix exposed pad
Normalize pin types
Verify footprint geometry
Run part review
IN2M
Pin Number
4
IN2P
Pin Number
3
VSS_8
Pin Number
24
IN1M
Pin Number
2
VSS_4
Pin Number
20
DREG
Pin Number
14
MD0
Pin Number
12
IN1P
Pin Number
1
FMT0
Pin Number
19
VSS_9
Pin Number
25
MD1
Pin Number
11
AREG
Pin Number
17
SDOUT
Pin Number
6
VSS_3
Pin Number
15
VSS_2
Pin Number
10
VSS_1
Pin Number
5
VSS_7
Pin Number
23
VSS_5
Pin Number
21
BCLK
Pin Number
7
MSZ
Pin Number
13
FSYNC
Pin Number
8
IOVDD
Pin Number
9
AVDD
Pin Number
16
VREF
Pin Number
18
VSS_6
Pin Number
22
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PCM1822IRTER

PCM1822IRTER thumbnail
ADC, Audio 32 b 8k ~ 192k I2S 20-WQFN (3x3)
The PCM1822 is a high-performance, Burr-Brown™ audio analog-to-digital converter (ADC) that supports simultaneous sampling of up to two analog channels. The device supports single-ended and differential line and microphone inputs with a 1-VRMS full-scale signal. The device integrates a phase-locked loop (PLL), a DC removal high-pass filter (HPF), and supports sample rates up to 192 kHz. The device supports time-division multiplexing (TDM) or I2S audio formats, selectable with the hardware pin level. Additionally, the PCM1822 supports master and slave mode selection for the audio bus interface operation. These integrated high-performance features, along with the ability to be powered from a single supply of 3.3 V, make the device an excellent choice for costsensitive, space-constrained audio systems in far-field microphone recording applications. The PCM1822 is specified from –40°C to +125°C, and is offered in a 20-pin WQFN package.
Features • Stereo high-performance ADC: – 2-channel analog microphones or line-in • ADC line and microphone differential and singleended input performance: – PCM1822 dynamic range: • 117-dB, dynamic range enhancer enabled • 111-dB, dynamic range enhancer disabled – THD+N: –95 dB • 1-VRMS full-scale input • ADC sample rate (fS) = 8 kHz to 192 kHz • Hardware pin control configurations • Linear-phase or low-latency filter selection • Flexible audio serial data interface: – Master or slave interface selection – 32-bits, 2-channel TDM – 32-bits, 2-channel I2S • Automatic power-down upon loss of audio clocks • Integrated high-performance audio PLL • Single-supply operation: 3.3 V • I/O-supply operation: 3.3 V or 1.8 V • Power consumption for 3.3-V AVDD supply: – 19.6 mW/channel at 16-kHz sample rate – 21.3 mW/channel at 48-kHz sample rate
#CommonPartsLibrary #IntegratedCircuit #PCM1822IRTER #TexasInstruments #AudioADC #StereoADC #BurrBrown #I2S #TDM #AudioElectronics #EmbeddedAudio #SmartSpeaker #AVReceiver #HighResolutionAudio #PCBDesign #ElectronicsDesign #SignalProcessing

Properties

PCM1822IRTER

Texas Instruments

Integrated Circuit

ti.com/lit/ds/symlink/pcm1822.pdf?HQS=dis-dk-null-digikeymode-dsf-pf-null-wwe&ts=1782324380095&ref_url=https%253A%252F%252Fwww.ti.com%252Fgeneral%252Fdocs%252Fsuppproductinfo.tsp%253FdistId%253D10%2526gotoUrl%253Dhttps%253A%252F%252Fwww.ti.com%252Flit%252Fgpn%252Fpcm1822

IC

Surface Mount

20-WQFN

parametric-v1

creativecommons.org/licenses/by/4.0/

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