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Texas Instruments AMC1200STDUBRQ1
- Part No.:
- AMC1200STDUBRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SMD, Gull Wing
- Datasheet:
-
AMC1200STDUBRQ1.pdf
- Description:
- IC OPAMP ISOLATION 1 CIRC 8SOP
- Quantity:
- Payment:
- Shipping:
Inventory:995
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Product details
Overview
AMC1200STDUBRQ1 from Texas Instruments is a fully-differential, AEC-Q100 Grade 2 automotive isolation amplifier optimized for shunt-based current sensing in high-voltage traction inverters and battery management systems. It delivers ±250-mV input range, 8-V/V fixed gain with 0.5% accuracy, 0.075% max nonlinearity at 5-V high-side supply, 108-dB CMRR, and 4250-VPEAK galvanic isolation across a SiO2 barrier.
For engineers reviewing the AMC1200STDUBRQ1 datasheet, AMC1200STDUBRQ1 pinout, AMC1200STDUBRQ1 application, or AMC1200STDUBRQ1 equivalent, this page provides verified technical context, validated pin functions, confirmed automotive-grade isolation specs, and real-world implementation constraints - including VDD1/VDD2 supply dependencies, self-adjusting output common-mode voltage, and differential output timing behavior critical for motor-control ADC interfacing.
Technical Context
The AMC1200STDUBRQ1 employs a second-order delta-sigma (ΔΣ) modulator on the high-side to digitize analog inputs, transmitting the bitstream and clock across a capacitive SiO2 isolation barrier. Its low-side stage uses a third-order active low-pass filter with fixed 8× gain and internal 2.56-V reference to reconstruct a fully differential analog output (VOUTP/VOUTN).
Input common-mode voltage ranges from GND1 – 0.16 V to VDD1, while output common-mode voltage self-adjusts to 1.29 V (at VDD2 = 3.3 V) or 2.55 V (at VDD2 = 5 V). The device supports 60-kHz minimum small-signal bandwidth and achieves 10 kV/µs minimum CMTI, meeting UL1577 and VDE V 0884-10 certification requirements for 1200-VPEAK working voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Voltage | 4250 VPEAK - certified per UL1577 and VDE V 0884-10; enables safe operation in 800-V battery systems. |
| Input Range | ±250 mV differential - matched to standard shunt resistor voltage drops; ensures linearity without external scaling. |
| Fixed Gain | 8 V/V ±0.5% - eliminates gain-setting resistors; reduces BOM count and layout sensitivity in motor control feedback loops. |
| Nonlinearity | 0.075% max (at VDD1 = 5 V) - supports <1% total current measurement error in traction inverter phase current sensing. |
| CMRR | 108 dB typical at DC - rejects high common-mode noise from switching nodes in DC-DC converters and inverters. |
| CMTI | 10 kV/µs min - maintains signal integrity during fast dv/dt transients in SiC/GaN power stages. |
| Supply Current | 8 mA max (high-side), 6 mA max (low-side at 5 V) - enables thermally constrained placement near gate drivers. |
Pinout & Package
AMC1200STDUBRQ1 is housed in an 8-pin SOP (DUB) package with 9.50 mm × 6.62 mm body size and gull-wing leads. The package meets creepage/clearance requirements for reinforced insulation in automotive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | High-side power supply input | 4.5–5.5 V supply for input stage and modulator; requires local 0.1-µF decoupling to GND1. |
| VINP / VINN | Differential analog inputs | Accept ±250-mV differential signal from shunt; absolute input range: GND1 – 0.32 V to VDD1 + 0.16 V. |
| GND1 | High-side analog ground | Floating reference tied to shunt's low-side node; defines input common-mode baseline. |
| GND2 | Low-side analog ground | Reference for output stage and VDD2; must be isolated from GND1 by PCB layout and power domain separation. |
| VOUTP / VOUTN | Differential analog outputs | Self-biasing outputs: common-mode adjusts to 1.29 V (3.3-V VDD2) or 2.55 V (5-V VDD2); drive ADC inputs directly. |
| VDD2 | Low-side power supply input | 2.7–5.5 V supply for output filter and reference; determines output common-mode level and noise performance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 2 qualification | Rated for –40°C to +105°C ambient operation - validated for under-hood and inverter module environments. |
| SiO2 capacitive isolation barrier | Immune to magnetic interference - avoids performance degradation near high-current busbars and transformers. |
| Self-adjusting output common-mode | Automatically tracks VDD2 supply - eliminates level-shifting circuitry when interfacing with 3.3-V or 5-V ADCs. |
| Low offset error | ±1.5 mV max - enables accurate zero-current detection in battery management system precharge monitoring. |
| Low noise density | 3.1 mVRMS output noise - supports high-resolution current measurement down to <100-mA resolution in 100-A shunts. |
Applications
| Traction Inverter Phase Current Sensing | On-Board Charger DC-Link Voltage Monitoring |
|---|---|
Use Scenario: Real-time measurement of motor phase currents in EV/HEV traction inverters using two-pin shunt resistors placed between IGBT modules and DC-link capacitor. IC Role / Device Role / Timing Role: Isolated differential amplifier providing galvanically separated, low-latency (≤5.6 µs signal delay) analog feedback to MCU ADC for field-oriented control. Use Value: Enables torque ripple reduction via precise current loop closure while surviving >10 kV/µs common-mode transients from SiC switching. |
Use Scenario: High-side DC-link voltage sensing in bidirectional OBC topologies where primary-side controller must monitor 400–800 V bus without direct connection. IC Role / Device Role / Timing Role: Isolated voltage scaling interface converting high-voltage divider output to safe, differential 0–5 V range for low-side controller ADC. Use Value: Eliminates optocoupler-based solutions requiring external op-amps and references; improves long-term stability vs. resistor-divider drift. |
| Battery Management System Precharge Monitoring | DC-DC Converter Primary-Side Current Sensing |
Use Scenario: Monitoring precharge current during high-voltage battery engagement to verify contactor weld prevention and soft-start compliance. IC Role / Device Role / Timing Role: Precision isolated amplifier capturing low-magnitude (<500 mA), slow-ramp precharge currents with sub-mV offset stability over temperature. Use Value: Supports fail-safe precharge validation per ISO 6469-3; ±1.5 mV offset error ensures reliable detection of <100 mA fault currents. |
Use Scenario: Primary-side current sensing in isolated DC-DC converters for vehicle 12-V rail generation, where high-side switch current must be measured without compromising isolation barrier integrity. IC Role / Device Role / Timing Role: High-CMRR isolation amplifier rejecting 600-V common-mode voltage while resolving ±250-mV shunt signals in presence of 100-kHz switching noise. Use Value: Enables peak-current-mode control with <1% gain error - improving transient response and reducing output capacitance requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AMC1301SDWVRQ1 | Higher 200-kHz bandwidth, ±350-mV input range, 10-MHz internal oscillator; 8-pin SOIC (DWV) only. | Better suited for high-frequency current-loop control in SiC-based inverters; not pin-compatible with DUB package. | Select AMC1301SDWVRQ1 when bandwidth >100 kHz or wider input range is required; board redesign needed due to SOIC footprint. |
| ISO224BDWR | 2-V/V gain, ±10-V input range, 100-kHz bandwidth, 5-kVRMS isolation; 8-pin SOIC (D). | Designed for wide-input-voltage industrial voltage sensing; lacks AEC-Q100 qualification and automotive temp grade. | Choose ISO224BDWR for non-automotive 10-V-level isolated voltage sensing; not suitable for automotive safety-critical current measurement. |
Compared with AMC1301SDWVRQ1 and ISO224BDWR, the AMC1200STDUBRQ1 uniquely balances automotive qualification, ±250-mV shunt-optimized input, and SOP packaging - making it the only drop-in solution for space-constrained, AEC-Q100-compliant traction inverter current sensing without layout revision.
Availability
AMC1200STDUBRQ1 is available at Aetrix Electronics and suitable for traction inverters, on-board chargers, and battery management systems requiring stable component supply, automotive-grade reliability, and certified galvanic isolation.
Supply support for AMC1200STDUBRQ1 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 company specializing in analog and embedded processing technologies, with leadership in precision signal chain and isolation solutions for automotive, industrial, and power applications.
The AMC1200-Q1 product line was designed specifically for high-accuracy, high-CMTI current sensing in electric vehicle powertrain systems - emphasizing AEC-Q100 compliance, shunt-resistor interface optimization, and robustness against fast-switching noise.
FAQ
What is the maximum recommended operating temperature for the AMC1200STDUBRQ1?
The AMC1200STDUBRQ1 is qualified for AEC-Q100 Temperature Grade 2, supporting continuous operation from –40°C to +105°C ambient temperature. Junction temperature must remain ≤150°C under all conditions; thermal design should account for 75.1°C/W RθJA in the DUB package with proper PCB copper area and airflow.
Does the AMC1200STDUBRQ1 require external clocking or configuration?
No, the AMC1200STDUBRQ1 operates autonomously with an internal RC oscillator driving its delta-sigma modulator at ~10 MHz. It requires no external clock, SPI/I²C interface, or configuration registers - simplifying design and eliminating startup sequencing complexity in automotive power modules.
Can the AMC1200STDUBRQ1 be used with a 3.3-V low-side supply?
Yes, the AMC1200STDUBRQ1 supports VDD2 from 2.7 V to 5.5 V. At 3.3 V, the output common-mode voltage settles to 1.29 V (typical), and nonlinearity remains within ±0.1% - enabling direct interface with 3.3-V SAR ADCs commonly used in automotive MCUs like the TMS570 or S32K series.
What is the signal propagation delay of the AMC1200STDUBRQ1?
The AMC1200STDUBRQ1 exhibits 3.15–5.6 µs signal delay (50% to 50% point, unfiltered output) depending on temperature and supply conditions. This deterministic latency enables precise time-aligned current sampling in synchronous PWM control schemes without additional calibration overhead.
How does the AMC1200STDUBRQ1 handle common-mode transients?
The AMC1200STDUBRQ1 achieves ≥10 kV/µs common-mode transient immunity (CMTI) due to its SiO2 capacitive isolation barrier and differential receiver architecture. This performance prevents data corruption during rapid dv/dt events in 800-V battery systems - exceeding ISO 26262 ASIL-B requirements for current sensing paths.
AMC1200STDUBRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SMD, Gull Wing
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Isolation
- Number of Circuits:
- 1
- Output Type:
- Differential
- Slew Rate:
- -
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 100 kHz
- Current - Input Bias:
- -
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 5.4mA
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOP
AMC1200STDUBRQ1 FAQ
1.How can I place an order for AMC1200STDUBRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AMC1200STDUBRQ1 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 AMC1200STDUBRQ1 reliable?
The price and inventory of AMC1200STDUBRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AMC1200STDUBRQ1 is usually 5 days.
3.What payment methods are accepted for AMC1200STDUBRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AMC1200STDUBRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AMC1200STDUBRQ1?
AMC1200STDUBRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AMC1200STDUBRQ1 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 AMC1200STDUBRQ1?
For technical support, including AMC1200STDUBRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AMC1200STDUBRQ1 requirements.
6.How does Aetrix verify that AMC1200STDUBRQ1 is sourced from the original manufacturer or authorized distributors?
All AMC1200STDUBRQ1 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 AMC1200STDUBRQ1 meets industry standards.
7.What is the process for return or replacement of AMC1200STDUBRQ1?
All AMC1200STDUBRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with AMC1200STDUBRQ1, 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 AMC1200STDUBRQ1 part is unused and in its original packaging.
Return procedure for AMC1200STDUBRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AMC1200STDUBRQ1 Tags
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