Part Review and Datasheet Verification

flux

5:29

Planning.

Cross.

Analyzing the schematic.

Looking for "Features list" in ADPD144RI.pdf

Looking for "General description" in ADPD144RI.pdf

Looking for "Applications" in ADPD144RI.pdf

Looking for "Absolute Maximum Ratings table" in ADPD144RI.pdf

Looking for "Recommended Operating Conditions" in ADPD144RI.pdf

Looking for "Electrical Characteristics table" in ADPD144RI.pdf

Looking for "I2C interface characteristics" in ADPD144RI.pdf

Looking for "Timing characteristics" in ADPD144RI.pdf

Looking for "Pin configuration and function descriptions" in ADPD144RI.pdf

Looking for "Pin 1 description" in ADPD144RI.pdf

Looking for "Pin 2 description" in ADPD144RI.pdf

Looking for "Pin 3 description" in ADPD144RI.pdf

Looking for "Pin 4 description" in ADPD144RI.pdf

Looking for "Pin 5 description" in ADPD144RI.pdf

Looking for "Pin 6 description" in ADPD144RI.pdf

Looking for "Pin 7 description" in ADPD144RI.pdf

Looking for "Pin 8 description" in ADPD144RI.pdf

Looking for "Pin 9 description" in ADPD144RI.pdf

Looking for "Pin 10 description" in ADPD144RI.pdf

Looking for "Pin 11 description" in ADPD144RI.pdf

Looking for "Pin 12 description" in ADPD144RI.pdf

Looking for "Package information mechanical dimensions" in ADPD144RI.pdf

Looking for "Recommended land pattern or PCB footprint" in ADPD144RI.pdf

Looking for "ABSOLUTE MAXIMUM RATINGS" in ADPD144RI.pdf

Looking for "Absolute maximum ratings" in ADPD144RI.pdf

Looking for "Maximum ratings" in ADPD144RI.pdf

Looking for "Outline Dimensions" in ADPD144RI.pdf

Looking for "Package dimensions" in ADPD144RI.pdf

Looking for "Mechanical outline" in ADPD144RI.pdf

Looking for "Package information" in ADPD144RI.pdf

Looking for "I2C electrical characteristics" in ADPD144RI.pdf

Looking for "Power supply voltages table" in ADPD144RI.pdf

Analyzing the PCB layout.

Here’s a complete review of the part project for ADPD144RI-ACEZ-RL7, executed in the requested order.

Review of available part information (as currently set in the project)

MPN: ADPD144RI-ACEZ-RL7
Description: not set (project description shows “ADPD144RI-ACEZ-RL7 / CE-12-2_ADI CE-12-2_ADI-M CE-12-2_ADI-L”)
Designator Prefix: U
Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADPD144RI.pdf
Package: not explicitly set in project properties
Pin count: 12 symbol pins present in the schematic via terminals
- LGND, SDA, DGND, AGND, VDD1, VREF, VLED, LEDX2, LEDX1, VDD2, INT, SCL

Datasheet URL check and update

A datasheet URL is already set on the part. No changes required.

Datasheet scan and metadata extraction (ADPD144RI.pdf)

Features (exact items)

2.8 mm × 5.0 mm module with integrated optical components
660 nm LED, 880 nm IR LED, and photodiode
Fully integrated AFE, ADC, LED drivers, and timing core
Custom optical package for use under a glass window
Programmable 2-channel, 8.5 mA to 370 mA LED drivers
Provision to use external LED emitters
Low power
Specifically designed for ultralow direct optical reflections
Independent AFE settings per channel
I2C data and control interface
Burst accumulator enabling 20 bits per sample period
Sample to sample accumulator enabling up to 27 bits per data read
16-bit or 32-bit register or FIFO readout per channel

Applications

Optical heart rate monitoring
Reflective SpO2 measurement

Recommended operating conditions

VDD (VDD1 and VDD2): min 1.7 V, typ 1.8 V, max 1.9 V
VLED (LED anode supply): min 3.0 V, typ 3.5 V, max 4.3 V
Operating temperature range: −40 to +85 °C

Selected electrical characteristics

Power supply current (VDD1, VDD2 = 1.8 V)
- Peak supply current (4-channel operation): 9.3 mA
- Standby mode current: 3.5 µA
- Example average supply current (depend on configuration; references provided in table):
  - 1 pulse @100 Hz, Time Slot A only: 106 µA
  - 1 pulse @100 Hz, Time Slot B only: 94 µA
  - 1 pulse @100 Hz, A+B: 151 µA
  - 10 pulses @100 Hz, A only: 258 µA
  - 10 pulses @100 Hz, B only: 246 µA
  - 10 pulses @100 Hz, A+B: 455 µA
VLED supply current, average (peak LED current 100 mA, 3 µs pulse)
- 1 pulse: 50 Hz 15 µA; 100 Hz 30 µA; 200 Hz 60 µA
- 10 pulses: 50 Hz 150 µA; 100 Hz 300 µA; 200 Hz 600 µA
LEDs
- LED peak current setting: 8.5 mA to 370 mA (programmable)
- Dominant wavelength: Red (LED1) 660 nm; IR (LED2) 880 nm
- Radiant flux (typ): Red 9 mW at IF = 20 mA; IR 33 mW at IF = 100 mA
Photodiode
- Responsivity (typ): 660 nm: 0.36 A/W (Ch1–3), 0.31 A/W (Ch4); 880 nm: 0.25 A/W (Ch1–3), 0.28 A/W (Ch4)
- Active area: 0.3 mm² (individual), 1.2 mm² (total)
Power supply
- PSRR at VDD = 1.8 V: −37 dB
Data acquisition
- ADC resolution (single pulse): 14 bits
- Output data width: up to 27 bits (per table conditions)
- Sampling frequency: 0.122 Hz (lowest) to 3.48 kHz (Time Slot B, one pulse/sample, tSLEEP = 200 µs)
- Minimum sleep time: 200 µs

Absolute maximum ratings

A dedicated “Absolute Maximum Ratings” table was not found in the datasheet. Only recommended operating conditions and specifications are provided.

Pin configuration and descriptions

Pin mapping (from Table 8)

1 — LGND — Supply — LED Ground.
2 — SDA — Digital input and output — Serial Address and Data.
3 — DGND — Supply — Digital Ground.
4 — AGND — Supply — Analog Ground.
5 — VDD1 — Supply — 1.8 V Supply Input.
6 — VREF — Analog reference — Voltage Reference. Bypass with a 0.7 µF to 4 µF capacitor to AGND. Recommended value is 1 µF.
7 — VLED — Supply — Integrated LEDs Anode Supply Voltage.
8 — LEDX2 — Analog output — External LED2 Cathode. Do not connect this pin unless driving external LEDs.
9 — LEDX1 — Analog output — External LED1 Cathode. Do not connect this pin unless driving external LEDs.
10 — VDD2 — Supply — 1.8 V Supply Input.
11 — INT — Digital input and output — Interrupt Input and Output.
12 — SCL — Digital input — Serial Clock for I2C Communication.

Package and land pattern

Package description: 12-Terminal Chip Array Small Outline No Lead Cavity [LGA_CAV]
Body size: 2.8 mm × 5.0 mm
Package option code: CE-12-2
Land Pattern (recommended): Figure 20 (datasheet) shows recommended PCB footprint with callouts including 0.905 mm, 0.7 mm, 0.45 mm, and 2.0 mm dimensions, along with the 12-pin numbering layout.

Ordering guide

ADPD144RI-ACEZ-RL7 — −40 °C to +85 °C — 12-Terminal LGA_CAV — CE-12-2 — 7” tape and reel
ADPD144RI-ACEZ-RL — −40 °C to +85 °C — 12-Terminal LGA_CAV — CE-12-2 — 13” tape and reel

Cross-check: schematic symbol and footprint vs datasheet

Schematic symbol vs datasheet

Pin count: 12 pins present in symbol; matches datasheet (12-terminal LGA_CAV).
Pin names and numbers: Match datasheet exactly (verified one-to-one):
- 1 LGND, 2 SDA, 3 DGND, 4 AGND, 5 VDD1, 6 VREF, 7 VLED, 8 LEDX2, 9 LEDX1, 10 VDD2, 11 INT, 12 SCL.
Pin electrical types in the symbol:
- Ground pins are currently typed as “Power Out” on LGND, DGND, and AGND. To avoid ERC issues and communicate intent, these should be typed as “Ground”.
- SDA is Bi-Directional (OK), SCL is Input (OK), INT is Bi-Directional (OK), LEDX1/LEDX2 are Outputs (OK), VREF, VDD1, VDD2, VLED are Power In (OK).

Footprint vs datasheet

Footprint present: 8b17a09e-fef0-4805-b4be-89e6ed5fded6.defaultFootprint with 12 pads (LGND, SDA, DGND, AGND, VDD1, VREF, VLED, LEDX2, LEDX1, VDD2, INT, SCL) — count matches package.
Footprint source/identity: Asset name “CE-12-2_ADI.kicad_mod”; footprint text tag “ADPD144RI-ACEZ-RL7”; package label “CE-12-2_ADI” — aligns with datasheet package option CE-12-2.
Pin 1 indicator: Present (F.SilkS circle at lower-left), consistent with typical orientation for pad “1”.
Body outline (F.Fab): 2.8956 mm × 5.1054 mm nominal rectangle; consistent with a 2.8 mm × 5.0 mm body callout (slight drafting margin on fab layer is typical).
Pad geometry from footprint:
- Pads per side: 6 per side, total 12
- Y-pitch: approximately 0.70 mm between adjacent pads
- Pad size: 0.6604 mm × 0.4572 mm
- Row-to-row center spacing: approximately 2.032 mm (pad centers at ±1.016 mm)
Land pattern conformance:
- Datasheet land pattern figure (Figure 20) shows callouts including 0.7 mm (pitch), 0.45 mm (pad width), and 2.0 mm (row spacing), which are consistent with the footprint’s 0.70 mm pitch, 0.4572 mm width, and ~2.032 mm spacing.
- The datasheet also shows a 0.905 mm callout in the land pattern figure; confirm whether this refers to pad length or an offset. The footprint uses 0.6604 mm pad length. If the 0.905 mm dimension is the recommended pad length, this is a potential mismatch; if it denotes another spacing, the footprint may be correct. Recommend verifying the figure’s legend against the current pad length.

Actionable flags and recommendations

Update pin types for grounds:
- Change LGND, DGND, and AGND from “Power Out” to “Ground” to prevent ERC confusion and accurately reflect datasheet definitions.
Verify land pattern pad length:
- Compare the datasheet’s 0.905 mm callout in Figure 20 to the footprint’s pad length 0.6604 mm. If 0.905 mm is the recommended pad length, adjust pads accordingly; otherwise, document the interpretation used when generating the footprint.
Ensure VREF decoupling guidance is captured:
- Datasheet requires 0.7 µF to 4 µF to AGND (1 µF recommended). Consider adding a property/note in the part description or a reference design note to prevent omission in schematics.
Everything else checks out:
- Pin names, numbers, functions, and symbol-to-footprint mapping align with the datasheet.
- Package identity and count match the ordering guide (CE-12-2, 12-terminal LGA_CAV).
- Pin 1 indicator present and consistent.

If you want, I can fix the ground pin types and, if desired, adjust the footprint pad length after you confirm the intended interpretation of the 0.905 mm land pattern dimension.

Fix ground pin types

Check pad length callout

Add VREF capacitor note

Run DRC/ERC review

31 days

Ready.

Reviews

Ground
A common return path for electric current. Commonly known as ground.
jharwinbarrozo
20.5M
Net Portal
Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
jharwinbarrozo
43.0M
Power Net Portal
Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
jharwinbarrozo
11.4M
Generic Resistor
A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibrary
jharwinbarrozo
1.5M
Generic Capacitor
A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibrary
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Generic Inductor
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15.6k
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An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
natarius
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875105359001
10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
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CTL1206FYW1T
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