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Texas Instruments AMC3306M05QDWERQ1
- Part No.:
- AMC3306M05QDWERQ1
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
AMC3306M05QDWERQ1.pdf
- Description:
- AUTOMOTIVE, ??50-MV REINFORCED I
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AMC3306M05QDWERQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-grade, reinforced isolated delta-sigma modulator with integrated DC/DC converter, optimized for ±50mV shunt-based current sensing in high-voltage traction systems. It delivers 16-bit resolution at 78kSPS, ±50µV max offset error, and 75kV/µs min CMTI - enabling precise, space-constrained current measurement in HEV/EV inverters and onboard chargers.
For engineers reviewing the AMC3306M05QDWERQ1 datasheet, AMC3306M05QDWERQ1 pinout, AMC3306M05QDWERQ1 application, or AMC3306M05QDWERQ1 equivalent, key selection criteria include its single-supply operation (3.3V/5V), reinforced isolation rated to 4250VRMS/6000VPK, ±0.2% gain error, diagnostic output (DIAG), and SOIC-16 DWE package with 10.3mm × 10.3mm footprint.
Technical Context
The AMC3306M05QDWERQ1 implements a capacitive reinforced isolation barrier certified to DIN EN IEC 60747-17 (VDE 0884-17) and UL1577, supporting 1.2kVRMS working voltage. Its on-chip isolated DC/DC converter eliminates the need for external isolated power, enabling direct low-side 3.3V/5V supply while powering the high-side analog front-end.
It outputs a 1-bit Manchester-encoded bitstream synchronized to an external 5–21MHz clock (CLKIN), requiring external sinc3 digital filtering for decimation to 16-bit output. The device integrates system-level diagnostics including undervoltage detection on both HLDO_OUT (2.4–2.6V threshold) and DCDC_OUT (2.1–2.25V threshold), plus active-low open-drain DIAG status reporting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Range | ±50mV differential - matched to low-value shunt resistors (e.g., 100µΩ–500µΩ) for high-current motor phase sensing without signal conditioning. |
| DC Accuracy | ±50µV offset error / ±0.2% gain error - enables <0.1% full-scale current measurement error over –40°C to +125°C. |
| Isolation Rating | 4250VRMS per UL1577 / 6000VPK reinforced - meets functional safety requirements for ASIL-D subsystems in traction inverters. |
| Data Output | Manchester-encoded 1-bit bitstream - immune to duty-cycle distortion; compatible with FPGA or MCU sinc3 filters for deterministic latency. |
| CMTI | 75kV/µs minimum - ensures reliable operation during fast-switching events (e.g., SiC/GaN gate drive transients) without data corruption. |
| Supply Flexibility | Single 3.3V or 5V low-side input - powers internal isolated DC/DC and high-side LDO (HLDO_OUT = 3.0–3.4V @ ≤1mA). |
| Diagnostic Coverage | Active-low DIAG pin with undervoltage monitoring on both DCDC_OUT and HLDO_OUT - supports ISO 26262 ASIL-B diagnostic fault detection. |
Pinout & Package
AMC3306M05QDWERQ1 uses a 16-pin SOIC (DWE) package measuring 10.3mm × 10.3mm, featuring reinforced creepage/clearance ≥8mm and DTI ≥21µm for capacitive isolation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: DCDC_OUT | High-side DC/DC output | Supplies HLDO_IN; must be connected directly to Pin 3 - forms isolated power path for high-side circuitry. |
| 2: DCDC_HGND | High-side DC/DC ground | Reference for high-side power domain; tied to HGND (Pin 8) - completes isolated DC/DC return loop. |
| 5: HLDO_OUT | High-side LDO output | Provides regulated 3.0–3.4V for high-side analog circuitry; supports ≤1mA load up to +85°C. |
| 6: INP / 7: INN | Differential analog inputs | Accept ±50mV signals directly from shunt; require DC path to HGND - no external amplification needed. |
| 10: DOUT | Digital bitstream output | Manchester-encoded 1-bit stream synchronized to CLKIN; requires external sinc3 filter for decimation. |
| 11: CLKIN | External clock input | 5–21MHz CMOS input with 1.5MΩ pulldown - defines sampling rate and bitstream timing; determines final data rate. |
| 14: DIAG | Diagnostic status output | Open-drain active-low flag indicating DCDC_OUT or HLDO_OUT undervoltage - enables real-time health monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - suitable for under-hood and inverter module placement without derating. |
| Integrated isolated DC/DC + LDO | Eliminates external isolated power supply - reduces BOM count by ≥3 components and PCB area by >30% vs discrete solutions. |
| Reinforced isolation certification | VDE 0884-17 + UL1577 compliance - satisfies ASIL-D voltage barrier requirements per ISO 26262 without additional safety hardware. |
| Low EMI design | Meets CISPR-11 Class B and CISPR-25 Level 5 - enables direct integration into noisy EV power stages without shielding. |
| System-level diagnostics | Dual undervoltage monitors + DIAG pin - provides fault signaling for functional safety mechanisms per ASIL-B decomposition. |
Applications
| HEV/EV Traction Inverter | Onboard Charger (OBC) |
|---|---|
|
Use Scenario: Real-time phase current measurement in 800V SiC inverter stacks with switching frequencies >50kHz. IC Role / Device Role / Timing Role: Isolated delta-sigma modulator capturing shunt voltage with <1µs propagation delay and 75kV/µs CMTI immunity. Use Value: Enables precise field-oriented control (FOC) and overcurrent protection with <0.1% full-scale error across temperature - critical for torque accuracy and IGBT/SiC short-circuit response. |
Use Scenario: Bidirectional AC/DC current sensing in 11kW+ OBCs using interleaved PFC and LLC topologies. IC Role / Device Role / Timing Role: High-accuracy, isolated current digitization on primary and secondary sides with synchronized bitstream timing. Use Value: Supports tight current regulation (<±0.5%) and efficiency optimization across wide load range (10–100%), meeting DOE Level VI and EU CoC v5 standards. |
| EV DC/DC Converter | Battery Management System (BMS) |
|
Use Scenario: Isolated high-side current monitoring in 900V-to-48V bidirectional DC/DC converters for 48V mild-hybrid architectures. IC Role / Device Role / Timing Role: Reinforced isolated modulator interfacing with shunt on high-voltage side, powered solely from low-side 5V rail. Use Value: Removes need for isolated bias supplies and optocouplers - simplifies layout, improves reliability, and reduces thermal stress in compact modules. |
Use Scenario: Cell-string current monitoring in high-voltage battery packs (up to 900V) with distributed modular architecture. IC Role / Device Role / Timing Role: Precision isolated current sensor feeding data to pack controller via daisy-chained SPI or isolated UART interface. Use Value: Enables accurate Coulomb counting and state-of-charge (SoC) estimation with <0.2% long-term drift - extending battery life and warranty compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated current sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AMC1304M05QDWQ1 | No integrated DC/DC; requires external isolated power supply; 20MHz max clock; ±50mV input range. | Lacks self-contained power - increases BOM and layout complexity in space-constrained inverters. | Select when existing isolated power infrastructure exists and cost sensitivity outweighs integration benefit. |
| SIM7021-50 | Capacitive isolation; ±50mV input; no integrated DC/DC; 10MHz max clock; lower CMTI (45kV/µs). | Lower noise floor but limited bandwidth and reduced transient immunity - less suitable for SiC/GaN fast-switching environments. | Select for cost-sensitive 400V systems where 75kV/µs CMTI is not required and external power is available. |
Compared with AMC1304M05QDWQ1 and SIM7021-50, the AMC3306M05QDWERQ1 uniquely combines integrated isolated power, AEC-Q100 Grade 1 rating, and 75kV/µs CMTI - making it the only option that eliminates external isolated supplies while maintaining robustness in 800V traction applications.
Availability
AMC3306M05QDWERQ1 is available at Aetrix Electronics and suitable for HEV/EV traction inverters, onboard chargers, and battery management systems requiring stable component supply, automotive qualification, and long-term production continuity.
Supply support for AMC3306M05QDWERQ1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with deep expertise in automotive-grade isolation and precision sensing.
The AMC3306M05QDWERQ1 belongs to TI's reinforced isolated modulator product line, designed specifically for high-reliability current sensing in electric vehicle powertrain systems where safety, accuracy, and integration are critical.
FAQ
What is the maximum clock frequency supported by the AMC3306M05QDWERQ1?
The AMC3306M05QDWERQ1 supports an input clock frequency (CLKIN) from 5MHz to 21MHz. At 20MHz, it achieves 78kSPS with a sinc3 filter (OSR=256), delivering 16-bit resolution and 81dB SINAD. Operation beyond 21MHz violates absolute maximum ratings and may cause bitstream instability or increased jitter.
Does the AMC3306M05QDWERQ1 require external power supplies on the high-voltage side?
No. The AMC3306M05QDWERQ1 integrates a reinforced isolated DC/DC converter and high-side LDO, allowing full operation from a single 3.3V or 5V low-side supply. DCDC_OUT (Pin 1) and HLDO_OUT (Pin 5) provide isolated power to the high-side analog section - eliminating external isolated supplies.
How does the DIAG pin function on the AMC3306M05QDWERQ1?
The DIAG pin on the AMC3306M05QDWERQ1 is an active-low, open-drain output that asserts low when either DCDC_OUT falls below 2.1–2.25V or HLDO_OUT drops below 2.4–2.6V. It supports real-time undervoltage monitoring for functional safety compliance and requires an external pull-up resistor to VDD for proper logic level translation.
What isolation certifications apply to the AMC3306M05QDWERQ1?
The AMC3306M05QDWERQ1 is certified to DIN EN IEC 60747-17 (VDE 0884-17) for reinforced insulation and UL1577 for 4250VRMS withstand voltage. It also meets IEC 62368-1 and carries VDE certificate number 40040142 and UL file E181974 - satisfying ASIL-D voltage barrier requirements per ISO 26262.
Can the AMC3306M05QDWERQ1 interface directly with a microcontroller's GPIO without additional level-shifting?
Yes. The AMC3306M05QDWERQ1's DOUT and DIAG outputs are CMOS-compatible with VDD-referenced logic levels (0.3×VDD low, 0.7×VDD high), and CLKIN includes an internal 1.5MΩ pulldown. When VDD = 3.3V or 5V, direct connection to standard MCU GPIOs is supported - no level shifters required for timing or data lines.
AMC3306M05QDWERQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 21M
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- Serial
- Configuration:
- ADC
- Ratio - S/H:ADC:
- 0:1
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- External
- Voltage - Supply, Analog:
- 3V ~ 5.5V
- Voltage - Supply, Digital:
- 3V ~ 5.5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 16-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
AMC3306M05QDWERQ1 FAQ
1.How can I place an order for AMC3306M05QDWERQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AMC3306M05QDWERQ1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AMC3306M05QDWERQ1 reliable?
The price and inventory of AMC3306M05QDWERQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AMC3306M05QDWERQ1 is usually 5 days.
3.What payment methods are accepted for AMC3306M05QDWERQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AMC3306M05QDWERQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AMC3306M05QDWERQ1?
AMC3306M05QDWERQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AMC3306M05QDWERQ1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AMC3306M05QDWERQ1?
For technical support, including AMC3306M05QDWERQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AMC3306M05QDWERQ1 requirements.
6.How does Aetrix verify that AMC3306M05QDWERQ1 is sourced from the original manufacturer or authorized distributors?
All AMC3306M05QDWERQ1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AMC3306M05QDWERQ1 meets industry standards.
7.What is the process for return or replacement of AMC3306M05QDWERQ1?
All AMC3306M05QDWERQ1 units undergo pre-shipment inspection (PSI). If there is an issue with AMC3306M05QDWERQ1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AMC3306M05QDWERQ1 part is unused and in its original packaging.
Return procedure for AMC3306M05QDWERQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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