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ADUM3482BRSZ
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Analog Devices Digital Isolators, SSOP-20-208mil. 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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Contents
README
markdownADUM3482BRSZ
Analog Devices · Digital Isolators · SSOP-20-208mil
ADUM3482BRSZ from Analog Devices, in a SSOP-20-208mil. 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 | VDDL1 | power_in | Supplies side 1 input/output circuits from 1.8 V to 5.5 V and should be bypassed to GND1 with a 0.01 µF to 0.1 µF ceramic capacitor. |
| 2 | GND1 | power_in | Ground reference for isolator side 1, internally connected to pin 10 and recommended to be tied to the PCB ground plane close to the part. |
| 3 | VIA | input | Logic input A on side 1. |
| 4 | VIB | input | Logic input B on side 1. |
| 5 | VOC | output | Logic output C on side 2. |
| 6 | VOD | output | Logic output D on side 2. |
| 7 | CTRL1 | input | Selects the side 1 output default level, with low giving default output low and high giving default output high. |
| 8 | VDD1 | power_in | Supplies isolator side 1 from 3.0 V to 5.5 V. |
| 9 | VDDC1 | power_out | Output of the internal regulator for side 1, to be bypassed to GND1 with a 0.01 µF to 0.1 µF ceramic capacitor and not used to power external circuits. |
| 10 | GND1 | power_in | Ground reference for isolator side 1, internally connected to pin 2 and recommended to be tied to the PCB ground plane close to the part. |
| 11 | GND2 | power_in | Ground reference for isolator side 2, internally connected to pin 19 and recommended to be tied to the PCB ground plane close to the part. |
| 12 | VDDC2 | power_out | Output of the internal regulator for side 2, to be bypassed to GND2 with a 0.01 µF to 0.1 µF ceramic capacitor and not used to power external circuits. |
| 13 | VDD2 | power_in | Supplies isolator side 2 from 3.0 V to 5.5 V. |
| 14 | CTRL2 | input | Selects the side 2 output default level, with low giving default output low and high giving default output high. |
| 15 | VID | input | Logic input D on side 2. |
| 16 | VIC | input | Logic input C on side 2. |
| 17 | VOB | output | Logic output B on side 2. |
| 18 | VOA | output | Logic output A on side 2. |
| 19 | GND2 | power_in | Ground reference for isolator side 2, internally connected to pin 11 and recommended to be tied to the PCB ground plane close to the part. |
| 20 | VDDL2 | power_in | Supplies side 2 input/output circuits from 1.8 V to 5.5 V and should be bypassed to GND2 with a 0.01 µF to 0.1 µF ceramic capacitor. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | SSOP-20-208mil |
| Category | Communication Interface Chip/UART/485/232 |
| Pins | 20 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Pulse Width | PW | 40 | ns | Within PWD limit | 3 | ||
| Data Rate | 25 | Mbps | Within PWD limit | 3 | |||
| Propagation Delay | tPHL, tPLH | 25 | 33 | ns | 50% input to 50% output | 3 | |
| Pulse Width Distortion | PWD | 3 | ns | /tPLH − tPHL/ | 3 | ||
| Propagation Delay Skew | tPSK | 17 | ns | Between any two units | 3 | ||
| Channel Matching Codirectional | tPSKCD | 5 | ns | 3 | |||
| Channel Matching Opposing Direction | tPSKOD | 7 | ns | 3 | |||
| Jitter | 2 | ns | 3 | ||||
| Supply Current ADuM3482 IDD1 | IDD1 | 3.5 | 4.1 | 7.3 | mA | 1 Mbps, A, B Grades | 3 |
| Supply Current ADuM3482 IDD1 at 25 Mbps | IDD1 | 8.8 | mA | 25 Mbps, B Grade | 3 | ||
| Supply Current ADuM3482 IDDL1 | IDDL1 | 0.16 | 0.5 | 1.2 | mA | 1 Mbps, A, B Grades, CL = 0 pF | 3 |
| Supply Current ADuM3482 IDDL1 at 25 Mbps | IDDL1 | 2.4 | mA | 25 Mbps, B Grade, CL = 0 pF | 3 | ||
| Supply Current ADuM3482 IDD2 | IDD2 | 3.5 | 4.7 | 7.3 | mA | 1 Mbps, A, B Grades | 3 |
| Supply Current ADuM3482 IDD2 at 25 Mbps | IDD2 | 8.8 | mA | 25 Mbps, B Grade | 3 | ||
| Supply Current ADuM3482 IDDL2 | IDDL2 | 0.16 | 0.65 | 1.2 | mA | 1 Mbps, A, B Grades, CL = 0 pF | 3 |
| Supply Current ADuM3482 IDDL2 at 25 Mbps | IDDL2 | 2.4 | mA | 25 Mbps, B Grade, CL = 0 pF | 3 | ||
| Logic Low Output Voltage | VOL | 0 | 0.1 | V | IOx = 20 µA, VIx = VIxL | 3 | |
| Logic Low Output Voltage | VOL | 0.4 | V | IOx = 4 mA, VIx = VIxL | 3 | ||
| Input Current per Channel | II | -10 | 0.01 | 10 | µA | 0 V ≤ VIx ≤ VDDLx, 0 V ≤ VCTRLx ≤ VDDLx | 3 |
| Quiescent Supply Current Regulator Input Side | IDDI (Q) | 0.5 | 0.6 | mA | 4 | ||
| Quiescent Supply Current I/O Input | IDDIL (Q) | 0.027 | 0.05 | mA | 4 | ||
| Quiescent Supply Current Regulator Output Side | IDDO (Q) | 1.26 | 1.7 | mA | 4 | ||
| Quiescent Supply Current I/O Output | IDDOL (Q) | 0.031 | 0.1 | mA | 4 | ||
| Output Rise/Fall Time | tR/tF | 2.5 | ns | 10% to 90% | 4 | ||
| Common-Mode Transient Immunity | /CM/ | 25 | 35 | kV/µs | VIx = VDDLx, VCM = 1000 V, transient magnitude = 800 V | 4 | |
| Refresh Period | tr | 1.66 | µs | 4 | |||
| Resistance (Input-to-Output) | RI-O | 1012 | Ω | 7 | |||
| Capacitance (Input-to-Output) | CI-O | 2.2 | pF | f = 1 MHz | 7 | ||
| Input Capacitance | CI | 4 | pF | Input capacitance is from any input data pin to ground | 7 | ||
| IC Junction-to-Case Thermal Resistance | θJC | 50.5 | °C/W | Thermocouple located at center of package underside, test conducted on 4-layer board with thin traces | 7 | ||
| Operating Temperature | TA | -40 | 125 | °C | 9 | ||
| Supply Voltages VDDL1, VDDL2 | VDDL1, VDDL2 | 1.8 | 5.5 | V | 9 | ||
| Supply Voltages VDD1, VDD2 | VDD1, VDD2 | 3 | 5.5 | V | 9 | ||
| Input Signal Rise and Fall Times | 1 | ms | 9 | ||||
| Supply Voltages (VDD1, VDD2, VDDL1, VDDL2, VDDC1, VDDC2) | -0.5 | 7 | V | 10 | |||
| Average Output Current per Pin | -10 | 10 | mA | 10 | |||
| Common-Mode Transients | -100 | 100 | kV/µs | Refers to common-mode transients across the insulation barrier | 10 | ||
| Storage Temperature Range | TST | -65 | 150 | °C | 10 | ||
| Ambient Operating Temperature Range | TA | -40 | 125 | °C | 10 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing | pC | In accordance with DIN EN IEC 60747-17 (VDE 0884-17), each of the ADuM348x is proof tested by applying an insulation test voltage of ≥1050 V peak for 1 second (partial discharge detection limit = 5 pC | 7 |
CAD (KiCad official)
- Symbol:
ADUM3482BRSZ - Footprint:
Package_SO:SSOP-20_5.3x7.2mm_P0.65mm - 3D model: SSOP-20-208mil (KiCad packages3D, STEP)
- 3D model files:
adum3482brsz-etched.step/adum3482brsz-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);adum3482brsz.step/adum3482brsz.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices datasheet (19 pp, sha256
bcb81f298e04f9e5, retrieved 2026-10-28, tier: manufacturer) - 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).