AMC1300DWVR - ±250mV Reinforced Isolated Amplifier | Texas Instruments
Référence : AMC1300DWVR ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $5.95 | $5,95 |
| 10 | $5.36 | $53,60 |
| 100 | $4.76 | $476,00 |
| 500 | $4.27 | $2 135,00 |
| 1 000 | $3.8 | $3 800,00 |
| 3 000 | $3.42 | $10 260,00 |
AMC1300DWVR Présentation
An isolation amplifier (also called an isolated current-sense amplifier) is a specialized analog component that combines a precision front-end amplifier with an integrated galvanic isolation barrier, allowing high-side shunt-resistor voltages to be measured safely from a low-voltage MCU or ADC domain. The category signal used for these parts sits inside the broader isolation IC family, which also includes digital isolators and isolated gate drivers, and the broader signal-chain hierarchy: isolation amplifier → instrumentation amplifier → op amp → analog IC. This positions the AMC1300 as a bridge between power-side analog signals and safety-isolated low-voltage digital control.
Key features of the AMC1300DWVR include a 200 kHz small-signal bandwidth, 80 dB common-mode transient immunity (CMTI), ±1 µV/°C typical offset drift, and a low-side 3.3 V or 5 V single-supply operation. The fixed-gain architecture eliminates external resistor matching, while the integrated DC/DC-converter-friendly low-side supply simplifies BOM. The reinforced isolation barrier is implemented using TI's silicon-oxide (SiO2) capacitive isolation technology, providing long-term reliability and immunity to magnetic interference that would couple into opto-isolator or transformer alternatives.
Typical applications include phase-current feedback for motor drives, DC-bus current sensing in solar inverters and string inverters, isolated voltage and current monitoring in grid-tie energy storage, EV traction inverter phase monitoring, and isolated analog front-ends for PLCs and industrial servo amplifiers. The ±250 mV linear input range is sized for standard 1 mΩ to 10 mΩ shunts, while the differential output drives a delta-sigma ADC such as the ADS131A04 or a SAR ADC with input common-mode flexibility.
When designing with this device, ensure an isolated DC/DC converter powers the high-side input stage; the AMC1300 cannot generate its own high-side supply. Also confirm the local creepage/clearance on the PCB satisfies end-equipment IEC 61800-5-1 or IEC 60950 reinforced isolation rules. (page: 2026-10-06)
This page synthesizes distributor inventory, fixed-gain alternatives, and isolation-barrier design notes that go beyond the bare datasheet.
Alternatives de remplacement direct pour AMC1300DWVR — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec AMC1300DWVR (même facteur de forme et même empreinte) — différant par Fixed Gain, Gain Error (max), Isolation Voltage (Reinforced), Output Type, Package.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
AMC1300DWV
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
AMC1300BDWV
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
AMC1302DWVR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
AMC1300BQDWVQ1
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
AMC1311DWVR
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
AMC1300DWVR Valeurs maximales et caractéristiques électriques
| Fonction | Precision isolated amplifier (current sensing) |
| Input Voltage Range (linear) | ±250 mV (differential) |
| Fixed Gain | 8.2 V/V |
| Type de sortie | Differential analog |
| Gain Error (max) | ±0.3% |
| Input Offset Voltage | 1 mV (max) |
| Input Offset Drift (typ) | ±1 µV/°C |
| Small-Signal Bandwidth | 200 kHz |
| Common-Mode Transient Immunity (CMTI) | 80 kV/µs (min) |
| High-Side Supply Voltage | 3.0 V to 5.5 V |
| Low-Side Supply Voltage | 3.0 V to 5.5 V |
| Isolation Voltage (Reinforced) | 5 kV RMS |
| Plage de température de fonctionnement | -40 °C to +125 °C |
| Boîtier | SOIC-8 wide-body (DWV) |
| Type de montage | Surface Mount |
| Niveau MSL | 3 |
| Statut RoHS | Compliant |
| Isolation Certification | VDE V 0884-11, UL1577 |
Configuration des broches de AMC1300DWVR
| Broche 1 | VDD1 — High-side power supply (3.0–5.5 V), powered by isolated DC/DC |
| Broche 2 | INP — Positive analog input (±250 mV differential) |
| Broche 3 | INN — Negative analog input (±250 mV differential) |
| Broche 4 | GND1 — High-side analog ground (referenced to shunt resistor) |
| Broche 5 | GND2 — Low-side analog ground (referenced to ADC/controller) |
| Broche 6 | OUTN — Negative differential output (gain 8.2) |
| Broche 7 | OUTP — Positive differential output (gain 8.2) |
| Broche 8 | VDD2 — Low-side power supply (3.0–5.5 V) |
Applications typiques
AMC1300DWVR convient pour 6 applications: Motor-Drive Phase-Current Sensing, Solar / String Inverter DC-Bus Monitoring, EV Traction Inverter Current Sensing, Industrial Servo and PLC Analog Front End, Battery-Management System (BMS) Current Sense, Grid-Tie Energy Storage Inverter.
Motor-Drive Phase-Current Sensing
The AMC1300DWVR's ±250 mV linear input range is sized for 1 mΩ–10 mΩ shunt resistors placed in series with each phase leg of a 3-phase motor drive, enabling precise torque control. Its 200 kHz bandwidth captures the fundamental switching frequency plus the harmonics required for high-bandwidth FOC loops in servo and industrial drives. The 5 kV reinforced isolation (VDE V 0884-11) supports the reinforced insulation class required by IEC 61800-5-1, while 80 kV/µs CMTI rejects fast-switching dV/dt transients from the IGBT power stage. The differential analog output drives directly into a delta-sigma ADC (e.g., ADS131A04) on the low-voltage controller side. Power dissipation is below 50 mW per channel, eliminating the need for thermal management on the sensing board. Recommended companion: Texas Instruments TMS320F28P65x C2000 MCU for FOC.
Recommandé
Solar / String Inverter DC-Bus Monitoring
In solar inverters, the AMC1300DWVR provides galvanically isolated current and voltage sensing on the high-voltage DC bus, allowing safe measurement from the low-voltage controller side. The fixed gain of 8.2 and 1 mV input offset provide accurate measurement of string currents from a 5 mΩ–50 mΩ shunt, with minimal drift over the -40 °C to +125 °C industrial range. The reinforced 5 kV RMS isolation satisfies the 1500 V DC string-inverter creepage/clearance requirements of IEC 62109. Its 80 kV/µs CMTI is critical in inverter environments where fast-switching SiC MOSFETs inject high dV/dt transients onto the DC bus. Combined with an isolated DC/DC (e.g., DCP010512DBP), the AMC1300 forms a fully floating analog front end. Recommended companion: Texas Instruments C2000 MCU for MPPT control.
Recommandé
EV Traction Inverter Current Sensing
In electric-vehicle traction inverters, the AMC1300DWVR provides reinforced isolation between the 400 V or 800 V DC-link shunt and the 12 V controller domain, meeting automotive-grade safety isolation requirements. The ±250 mV linear range is sized for the low-ohm shunts (typically 0.5–1 mΩ) used for high-current sensing (>300 A peak) during acceleration and regenerative braking. The 200 kHz bandwidth captures the high-frequency content of SiC MOSFET switching events, enabling accurate torque estimation in FOC. While the standard AMC1300DWVR is industrial-grade, the AEC-Q100-qualified AMC1300BQDWVQ1 in the same SOIC-8 DWV package can be substituted for ISO 26262-compliant designs. Recommended companion: SiC MOSFET gate driver and high-precision shunt resistor.
Recommandé
Industrial Servo and PLC Analog Front End
In industrial PLC and servo amplifier modules, the AMC1300DWVR provides isolated analog input channels that meet the IEC 61131-2 reinforced insulation requirements between field-side analog inputs and the controller backplane. The SOIC-8 wide-body (DWV) package provides 8 mm of clearance and creepage, supporting 5 kV reinforced isolation over the industrial pollution-degree-2 PCB. Its ±250 mV input range accepts standard 4–20 mA current-loop sense resistors (e.g., 250 Ω for 1.0 V drop) or direct shunt-resistor measurement of motor currents. The 1 mV input offset and ±1 µV/°C offset drift provide the linearity required for accurate process-variable feedback in factory automation. Recommended companion: Texas Instruments ADC and isolated digital I/O modules.
Recommandé
Battery-Management System (BMS) Current Sense
In battery-management systems for stationary batteries or large-format Li-ion packs, the AMC1300DWVR provides reinforced isolation between the high-voltage stack (300–800 V) and the low-voltage BMS controller, allowing safe coulomb-counting and over-current detection. The ±250 mV input range matches the typical 1 mΩ–3 mΩ pack-current shunts, while the 200 kHz bandwidth captures fast transient currents from regenerative loads. The 5 kV RMS reinforced barrier covers the full battery-stack voltage and meets the IEC 62619 + UL 1973 isolation requirements for stationary energy storage. Combined with a precision SAR ADC, the AMC1300 enables <1% SoC accuracy across the full operating temperature range. Recommended companion: Texas Instruments BQ79631 BMS AFE.
Recommandé
Grid-Tie Energy Storage Inverter
In grid-tie energy storage inverters and uninterruptible power supplies, the AMC1300DWVR provides isolated current sensing on the AC mains-side inductors and DC-link shunt, enabling safe measurement of grid currents up to ±100 A peak. The fixed gain of 8.2 and 1 mV input offset provide the linearity required for grid-synchronization loops (PLL) and anti-islanding protection, with <0.3% gain error over temperature. The 80 kV/µs CMTI rejects the high dV/dt events from the bridgeless PFC or totem-pole PFC stages commonly used in modern UPS systems. The 5 kV reinforced isolation supports the IEC 62109-2 reinforced-insulation class for grid-connected equipment. Recommended companion: TI C2000 MCU with software-based grid synchronization.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour AMC1300DWVR — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | AMC1300DWV | AMC1300BDWV | AMC1302DWVR | AMC1300BQDWVQ1 | AMC1311DWVR |
|---|---|---|---|---|---|---|
| Package | SOIC-8 wide-body (DWV) | SOIC-8 wide-body (DWV) - same | SOIC-8 wide-body (DWV) - same | SOIC-8 wide-body (DWV) - same | SOIC-8 wide-body (DWV) - same | SOIC-8 wide-body (DWV) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Input Voltage Range | ±250 mV differential | ±250 mV differential - same | ±250 mV differential - same | ±50 mV differential | ±250 mV differential - same | 0–2 V unipolar |
| Fixed Gain | 8.2 V/V | 8.2 V/V - same | 8.2 V/V - same | 41 V/V (+400%) | 8.2 V/V - same | 1 V/V |
| Small-Signal Bandwidth | 200 kHz | 200 kHz - same | 200 kHz - same | 200 kHz - same | 200 kHz - same | 220 kHz |
| Isolation Voltage (Reinforced) | 5 kV RMS | 5 kV RMS - same | 5 kV RMS - same | 5 kV RMS - same | 5 kV RMS - same | 5 kV RMS - same |
| Common-Mode Transient Immunity | 80 kV/µs (min) | 80 kV/µs - same | 80 kV/µs - same | 80 kV/µs - same | 80 kV/µs - same | 80 kV/µs - same |
| Automotive Grade | No (industrial) | No (industrial) | No (industrial) | No (industrial) | Yes (AEC-Q100) | No (industrial) |
| Reel Quantity | 3000 pcs (R suffix) | 500 pcs | 500 pcs | 3000 pcs - same | 3000 pcs - same | 3000 pcs - same |
Principaux différenciateurs
- Reinforced 5 kV RMS isolation in a SOIC-8 wide-body package (vs AMC1200 (older TI isolation amplifier))
- Higher bandwidth (200 kHz) for SiC and IGBT switching harmonics (vs AMC1100 (older TI isolation amplifier))
- Higher fixed gain (8.2) eliminates external gain resistors (vs AMC1301 adjustable-gain isolation amplifier)
- Automotive-grade variant available in same footprint (vs AMC1300DWVR (industrial) vs AMC1300BQDWVQ1 (AEC-Q100))
Notes de conception
The AMC1300DWVR cannot generate its own high-side supply — pin 1 (VDD1) MUST be powered by an external isolated DC/DC converter such as a Texas Instruments DCP010512SN6501 pair. Estimated: total high-side supply current is ~10 mA including the shunt-resistor bias current. A 3.3 V LDO (e.g., TPS7A3001) on the low-side regulator supplies VDD2, with a 1 µF X7R bypass capacitor placed within 5 mm of VDD1 and VDD2 pins.
The SOIC-8 wide-body package has theta_JA of ~120 °C/W on a standard 2-layer JEDEC board; at maximum operating ambient of 125 °C, the AMC1300DWVR can tolerate ~80 mW dissipation. The part typically dissipates 30–60 mW depending on input and supply conditions. For end-equipment with restricted airflow, route 4 thermal vias under the exposed pad copper pour to spread load into inner copper layers. Do not exceed 150 °C junction temperature.
Maintain minimum 8 mm creepage distance beneath and across the SOIC-8 wide-body footprint to preserve the 5 kV RMS reinforced isolation rating. Avoid copper traces, vias, or solder mask openings underneath the package body — a clean PCB slot under the part prevents contamination of the high-voltage clearance. Route the high-side input traces (INP/INN) as a tightly-coupled differential pair over a continuous low-side ground plane, and route the low-side outputs (OUTP/OUTN) similarly.
Do not apply common-mode voltage on INP/INN beyond the high-side supply rails — the AMC1300DWVR is not a true differential amplifier on its input side and will saturate if a shunt resistor floats to a high-side rail different from VDD1. Also confirm the external ADC reference voltage supports the differential output swing (VOUT = 8.2 × VIN at ±250 mV = ±2.05 V differential) — choose an ADC with at least a ±2.5 V differential input range or use a downstream resistive divider.
The differential output (OUTP/OUTN) bandwidth is 200 kHz small-signal; for drives using a delta-sigma ADC, ensure the ADC modulator clock rate (e.g., 20 MHz ADS131A04) and digital filter are configured to avoid aliasing the AMC1300 output. Common-mode chokes (10 µH) on each output line reduce EMI susceptibility when the analog output runs more than 25 mm on the PCB near noisy digital or power traces.
Informations de conformité
RoHS compliant per TI product page. Reinforced isolation certified to VDE V 0884-11 and UL1577 per TI datasheet. The AMC1300DWVR (industrial-grade) is not AEC-Q100 qualified — choose the AMC1300BQDWVQ1 for AEC-Q100 automotive designs on the same SOIC-8 DWV footprint.
