AMC3330QDWERQ1 Comprehensive Datasheet Summary

1. Basic Device Information

• Full Part Number: AMC3330QDWERQ1
• Device Family: AMC3330‑Q1 Automotive Precision Isolated Amplifier
• Status: Active, production data
• Document: SBASA35B (June 2020 – Revised September 2024)
• Automotive Qualification: AEC‑Q100 Grade 1
• Package: DWE (16‑pin SOIC), nominal size 10.3 mm × 10.3 mm
• Ordering & Packaging: SOIC 16‑pin, 2000 units per large tape‑and‑reel, RoHS compliant, lead finish NIPDAU, MSL Level‑3 260°C 168hr, operating temp −40°C to 125°C, marking AMC3330Q

2. Core Features

• Integrated Isolated DC/DC Converter: Single 3.3 V or 5 V low‑side supply operation
• Input: ±1 V linear full‑scale range (VFSR), ±1.25 V clipping range, high input impedance
• Fixed Gain: 2.0 V/V
• High Precision DC Errors (max):
• Robust Isolation:
• High CMTI: ≥85 kV/µs (min)
• System Diagnostics: Integrated DC/DC fault detection, open‑drain DIAG pin
• EMC Compliance: Meets CISPR‑11 and CISPR‑25

3. Key Applications

• Isolated voltage sensing in automotive systems:

4. Pin Configuration (16‑Pin SOIC Top View)

5. Absolute Maximum Ratings

• Supply voltage (VDD to GND): −0.3 V to 6.5 V
• Analog input (INP, INN): HGND −6 V to HLDO_OUT +0.5 V
• Analog output (OUTP, OUTN): GND −0.5 V to VDD +0.5 V
• Digital output (DIAG): GND −0.5 V to 6.5 V
• Input current (continuous): ±10 mA
• Junction temperature (TJ): 150 °C
• Storage temperature (Tstg): −65 °C to 150 °C

6. Recommended Operating Conditions

• Supply Voltage (VDD): 3.0 V to 5.5 V (nominal 3.3 V / 5 V)
• Linear Differential Input (VFSR): −1 V to +1 V
• Clipping Input (VClipping): ±1.25 V
• Common‑Mode Input (VCM): −1.4 V to 1.6 V (normal operation)
• Ambient Temperature (TA): −40 °C to +125 °C
• Output Load:

7. Isolation & Safety Specifications

• Clearance/creepage: ≥8 mm external
• Insulation distance (DTI): ≥21 µm (signal), ≥120 µm (power)
• CTI: ≥600 V, Material Group I
• VIORM: 1700 VPK; VIOWM: 1200 VRMS / 1700 VDC
• VIOTM: 6000 VPK (transient isolation)
• VIMP: 7700 VPK (impulse voltage)
• VIOSM: 10000 VPK (surge isolation)
• Isolation Capacitance (CIO): ~4.5 pF
• Isolation Resistance (RIO): >1012 Ω @25 °C
• Certifications:

8. Electrical Characteristics (TA = −40°C to 125°C, VDD = 3.0–5.5 V)

• Input:
• Output:
• Accuracy:
• Power:

9. Thermal Information

• Junction‑to‑ambient thermal resistance (RθJA): 73.5 °C/W
• Junction‑to‑top (RθJC(top)): 31 °C/W
• Junction‑to‑board (RθJB): 44 °C/W
• Max power dissipation: 236.5 mW @VDD = 5.5 V
• Safety limiting current (IS): 309 mA @VDD = 5.5 V, TA = 25 °C

10. Functional Description

• Signal Path: Second‑order ΔΣ modulator → capacitive isolation barrier → fourth‑order low‑pass filter → differential output
• Isolation Technology: Double SiO2 capacitive signal isolation; on‑chip transformer with thin‑film polymer power isolation
• OOK Modulation: 480 MHz carrier for robust barrier transmission
• Diagnostics & Failsafe:
• DC/DC Converter: Spread‑spectrum clocking for low EMI; internal low‑side/high‑side LDO regulation

11. Application & Implementation

• Typical Use: High‑voltage isolated sensing via resistive dividers in OBC, inverters, BMS
• Input Filtering: RC low‑pass recommended; single capacitor often sufficient for divider front‑ends
• Output Interface: Differential output; convert to single‑ended for single‑ended ADCs using op‑amp circuits
• Power Supply Decoupling:
• Layout Guidelines: Symmetrical input/output paths; keep decoupling caps close; maintain ≥8 mm creepage/clearance; separate high‑side/low‑side grounds

12. Ordering & Packaging Details

• Orderable Part: AMC3330QDWERQ1, AMC3330QDWERQ1.A
• Package: 16‑pin SOIC (DWE), tape‑and‑reel
• Dimensions: Reel diameter 330.0 mm, width 16.4 mm; tape pitch 12.0 mm
• Marking: AMC3330Q
• MSL: Level 3, peak reflow 260 °C

13. Revision Highlights (SBASA35B, Sep 2024)

• Updated isolation certification to DIN EN IEC 60747‑17 (VDE 0884‑17)
• Extended DIAG pin max voltage to 6.5 V
• Added output load capacitance/resistance specs
• Updated barrier capacitance to 4.5 pF
• Added DIAG electrical specs, VDD UV/POR thresholds, IH for 4.5–5.5 V
• Improved layout and decoupling recommendations