Part A
AMC1300DWVR
Texas Dụng cụ
- Lifecycle
- Active
- Stock
- 1951 PCS
- Package
- SOIC-8
- Series
- Linear - Amplifiers - Special Purpose
Replacement verdict
Compatible functional replacement candidate
The AMC1311DWVR and AMC1300DWVR are both isolated amplifiers in the same SOIC-8 (DWV) package with identical pinout and 5.0 kV reinforced isolation ratings, making them strong functional replacement candidates. However, they differ in input voltage range and gain architecture: the AMC1311 is a high-impedance ±1 V input voltage-sense amplifier, while the AMC1300 is a ±250 mV shunt-current-sense amplifier with fixed gain. Designers must validate the input signal chain and gain requirements before substituting one for the other.
Package and Pinout
High match
Isolation Rating
High match
Input Voltage Range
Validation required
Gain and Output Architecture
Not compatible
Parts at a glance
Part B
AMC1311DWVR
Texas Dụng cụ
- Lifecycle
- Active
- Stock
- 1397 PCS
- Package
- SOIC-8
- Series
- Linear - Amplifiers - Special Purpose
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AMC1311DWVR | AMC1300DWVR | Why it matters |
|---|---|---|---|
| Input Signal Type | Voltage input (high-impedance, ±1 V range) | Current shunt input (low-impedance, ±250 mV range) | Determines whether the device senses a voltage directly or a shunt resistor voltage drop; these are not functionally interchangeable without circuit redesign. |
| Input Voltage Range | ±1 V (full-scale ±1 V) | ±250 mV (full-scale ±250 mV) | The full-scale input span sets the required signal conditioning and shunt/sensor scaling; mismatched ranges cause clipping or poor resolution. |
| Input Impedance | High impedance (approx. 1 GΩ typical) | Low impedance (approx. 20 kΩ typical) | High input impedance allows direct voltage sensing without loading the source, while low impedance is intended for shunt-based current sensing. |
| Isolation Rating | 5 kV RMS (reinforced, per datasheet) | 5 kV RMS (reinforced, per datasheet) | Both provide equivalent reinforced galvanic isolation, so safety and creepage/clearance requirements are met equally. |
| Output Interface | Differential analog output | Differential analog output | Identical differential analog output means the downstream ADC interface and signal chain topology can remain the same. |
| Supply Voltage | 3.0 V to 5.5 V (high side and low side) | 3.0 V to 5.5 V (high side and low side) | Matching supply ranges allow the same power rails to be reused without regulator changes. |
| Package | 8-pin SOIC (DWV) | 8-pin SOIC (DWV) | Identical package and pinout enable drop-in PCB footprint compatibility. |
| Typical Gain / Transfer | Fixed gain of 1 (voltage sensing) | Fixed gain of 8 (current sensing) | Different fixed gains change the output scaling relative to input, requiring recalibration of the measurement chain. |
| Primary Application | Isolated voltage sensing (e.g., DC-link/bus voltage) | Isolated current sensing (e.g., motor/inverter shunt current) | The intended measurement quantity differs, so substituting one for the other changes what physical parameter is being monitored. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AMC1300DWVR | AMC1311DWVR |
|---|---|---|
| Part Status | Active | Active |
| Type | Isolation | Isolation |
| Applications | Current Sensing, Power Management | - |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the primary functional differences between the AMC1311DWVR and AMC1300DWVR?
The AMC1311DWVR is a precision isolated amplifier optimized for voltage sensing with a high input impedance of 1 GΩ and a ±1 V input range, while the AMC1300DWVR is an isolated amplifier designed for current sensing with a low input impedance of 20 kΩ and a ±250 mV input range. Both are galvanically isolated amplifiers in a 5.85 mm wide-body SOIC-8 (DWV) package, but their input structures and intended sensing applications differ.
Are the AMC1311DWVR and AMC1300DWVR pin-compatible?
Yes. Both devices are offered in the same 8-pin SOIC (DWV) package with the same pinout: VDD1, INP, INN, GND1 on the input side and VDD2, OUTP, OUTN, GND2 on the output side. This allows a common PCB footprint, but electrical differences must still be validated before substitution.
What are the input voltage ranges of the AMC1311DWVR and AMC1300DWVR?
The AMC1311DWVR supports a nominal input range of ±1 V with a high input impedance of 1 GΩ, making it suitable for isolated voltage sensing. The AMC1300DWVR supports a nominal input range of ±250 mV with a 20 kΩ input impedance, making it suitable for isolated shunt-based current sensing.
Do the AMC1311DWVR and AMC1300DWVR have the same isolation rating?
Both devices are reinforced isolated amplifiers rated for 5000 V RMS isolation (per the DWV package) and are designed to meet UL 1577 and VDE 0884-11 reinforced isolation requirements. Designers should confirm the specific isolation specification and certification details in the respective manufacturer datasheets for the target end equipment.
Can the AMC1311DWVR be used as a direct drop-in replacement for the AMC1300DWVR in a current-sensing circuit?
No, not without redesign. The AMC1300DWVR is intended for low-level shunt current sensing with a ±250 mV input and 20 kΩ input impedance, whereas the AMC1311DWVR has a ±1 V input range and 1 GΩ input impedance. The different input ranges and impedances mean the signal chain, shunt value, and gain scaling would need to be re-evaluated.
What are the typical supply voltage and output interface characteristics of these devices?
Both the AMC1311DWVR and AMC1300DWVR operate with a high-side supply (VDD1) of 3.0 V to 5.5 V and a low-side supply (VDD2) of 3.0 V to 5.5 V, and provide a differential analog output. The output is intended to drive a differential input of an ADC or a downstream signal-conditioning stage.
Which device is better suited for isolated voltage sensing versus isolated current sensing?
The AMC1311DWVR is better suited for isolated voltage sensing due to its high 1 GΩ input impedance and ±1 V input range, which allows direct connection to high-impedance voltage divider networks. The AMC1300DWVR is better suited for isolated current sensing because its ±250 mV input range and 20 kΩ input impedance match low-level shunt resistor signals.
Do both devices support the same operating temperature range?
Both the AMC1311DWVR and AMC1300DWVR are specified for an operating temperature range of –40°C to +125°C, making them suitable for industrial and automotive-grade environments. Designers should verify the exact temperature specification in the manufacturer datasheet for the specific grade ordered.