AMC3330DWER Complete Datasheet Summary

1. Basic Device Information

• Part Number: AMC3330DWER
• Full Name: Precision, ±1V Input, Reinforced Isolated Amplifier with Integrated DC/DC Converter
• Manufacturer: Texas Instruments (TI)
• Document ID: SBASA34B (June 2020, Revised August 2024)
• Package: 16‑pin SOIC (DWE package), 10.3 mm × 10.3 mm
• Packing: 2000 units per large tape-and-reel
• Status: Active, production, RoHS compliant
• MSL Rating: Level 3, peak reflow 260°C, 168 hr
• Operating Temperature: −40°C to +125°C
• Key Attribute: Single low‑side 3.3V/5V supply; fully integrated isolated power

2. Key Features

• Single‑supply operation (3.3 V or 5 V) with integrated isolated DC/DC converter
• ±1 V linear differential input range, high input impedance
• Fixed gain: 2.0
• Low DC errors:
• High CMTI: ≥85 kV/µs (min)
• System‑level diagnostic output (DIAG, active‑low open‑drain)
• Reinforced isolation certifications:
• Meets CISPR‑11 and CISPR‑25 EMI standards

3. Typical Applications

• Isolated voltage sensing in motor drives
• PV inverters & power delivery systems
• EV charging infrastructure
• Battery energy storage systems
• Industrial power systems & high‑voltage monitoring

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

5. Absolute Maximum Ratings

• Supply voltage (VDD–GND): −0.3 V to 6.5 V
• Analog input (INP, INN): HGND −6 V to VHLDO_OUT +0.5 V
• Digital I/O (DIAG): −0.5 V to 6.5 V
• Continuous input current: ±10 mA
• Junction temperature: 150°C
• Storage temperature: −65°C to 150°C
• ESD: HBM ±2000 V; CDM ±1000 V

6. Recommended Operating Conditions

• VDD: 3.0 V to 5.5 V (nominal 3.3 V / 5 V)
• Differential input (full‑scale): −1 V to +1 V
• Clipping threshold: ±1.25 V
• Common‑mode input (VCM): −1.4 V to 1.6 V
• Ambient temperature: −40°C to +125°C
• Capacitive load (single‑ended): ≤500 pF; differential: ≤250 pF
• Resistive load: ≥1 kΩ

7. Critical Electrical Characteristics (TA = 25°C, VDD = 3.3 V)

• Input resistance (differential): 1.2 GΩ
• Input bias current: ±10 nA (max)
• Output bandwidth: 300–375 kHz
• Output common‑mode voltage: 1.44 V (typ)
• SNR: 85 dB (typ); THD: −84 dB (typ)
• CMRR: −100 dB (dc); −86 dB (10 kHz)
• PSRR: −98 dB (dc); −86 dB (10 kHz)
• Isolation resistance (RIO): >10¹² Ω (25°C)
• Barrier capacitance (CIO): ~4.5 pF
• High‑side LDO (HLDO_OUT): 3.2 V (typ)
• Low‑side supply current (IDD): 28.5–41 mA

8. Isolation & Safety Specifications

• Clearance/creepage: ≥8 mm
• Internal insulation thickness: ≥21 µm (signal), ≥120 µm (power)
• VIORM (repetitive peak): 1700 VPK
• VIOWM (working voltage): 1200 VRMS / 1700 VDC
• VIOTM (transient isolation): 6000 VPK
• Impulse voltage (VIMP): 7700 VPK (air), 10000 VPK (oil)
• Safety certifications: VDE DIN EN IEC 60747‑17, UL1577, IEC 62368‑1
• Safety limiting current: up to 472 mA; power: 1700 mW

9. Functional Description

• Input Stage: High‑impedance buffered input feeding a 2nd‑order ΔΣ modulator
• Isolation: Capacitive SiO₂ reinforced isolation barrier; OOK modulation
• Output: 4th‑order active filter, differential analog output, gain = 2
• Power: Integrated isolated DC/DC + LDOs; single low‑side supply only
• Diagnostics: DIAG pin asserts low on power fault, loss of regulation, or invalid data; outputs go to fail‑safe negative full scale

10. Layout & Design Guidelines

• Place decoupling caps (1 nF, 1 µF) close to supply pins
• Keep input paths symmetric; HGND connected to INN
• Maintain ≥8 mm creepage/clearance across isolation barrier
• DIAG requires external pull‑up resistor if used
• Do not load low‑side LDO_OUT; limit HLDO_OUT loading to ≤1 mA

11. Ordering & Packaging

• Part: AMC3330DWER
• Package: 16‑pin SOIC (DWE)
• Quantity: 2000 per large tape‑and‑reel
• Lead finish: NIPDAU
• Marking: AMC3330
• Qualified automotive version: AMC3330‑Q1