Part A
AMC1311BDWV
Техасские инструменты
- Lifecycle
- Active
- Stock
- 3238 ПКС
- Package
- SOIC-8
- Series
- Линейные - Усилители - Специальное назначение
Replacement verdict
Compatible functional replacement candidate
The AMC1300BDWV and AMC1311BDWV 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 AMC1300B is a fixed-gain current-sense amplifier with a ±250 mV input range, while the AMC1311B is a high-impedance voltage-sense amplifier with a ±1 V input range. Designers must validate the input signal conditioning and gain requirements before substituting one for the other.
Package and Pinout
High match
Isolation Rating
High match
Input Voltage Range
Validation required
Gain Architecture
Not compatible
Parts at a glance
Part B
AMC1300BDWV
Техасские инструменты
- Lifecycle
- Active
- Stock
- 6086 ПКС
- Package
- SOIC-8
- Series
- Линейные - Усилители - Специальное назначение
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AMC1300BDWV | AMC1311BDWV | Why it matters |
|---|---|---|---|
| Input Signal Type | Current shunt (low input impedance, resistive input) | Voltage (high input impedance, 1 GΩ typical) | Determines whether the device measures current via a shunt resistor or voltage directly; these are not functionally interchangeable for the same sensing task. |
| Input Voltage Range | ±250 mV (linear input range) | ±2 V (linear input range) | Defines the maximum differential signal the amplifier can accept; the 8x difference dictates the shunt or divider design and overall measurement scaling. |
| Input Impedance | Low (resistive, ~22 kΩ typical differential) | Very high (1 GΩ typical) | High input impedance allows direct voltage sensing without loading the source, while low impedance suits shunt-based current sensing. |
| Isolation Rating | 5 kV RMS (reinforced, per UL1577) | 5 kV RMS (reinforced, per UL1577) | Both provide the same reinforced galvanic isolation, so safety and creepage/clearance requirements are equally satisfied. |
| Output Type | Differential analog output | Differential analog output | Identical differential output interface means both can drive the same downstream ADC or amplifier stage. |
| Supply Voltage | 3.0 V to 5.5 V (both sides) | 3.0 V to 5.5 V (both sides) | Matching supply ranges allow either part to be used with the same power rails without redesign. |
| Package | 8-pin SOIC (DWV) | 8-pin SOIC (DWV) | Same package and pinout enable drop-in PCB compatibility between the two devices. |
| Gain | 8.2 (fixed) | 1 (fixed) | Different fixed gains mean the output scaling differs, so system calibration and ADC full-scale mapping must be adjusted accordingly. |
| Typical Application | Motor drive and inverter current sensing via shunt | Isolated voltage sensing (DC-link, battery, grid voltage) | The intended sensing function differs, so substituting one for the other requires changing the sensing topology, not just the part. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AMC1311BDWV | AMC1300BDWV |
|---|---|---|
| Part Status | Active | Active |
| Type | Isolation | Isolation |
| Mounting Type | Surface Mount | Surface Mount |
| Applications | - | Current Sensing, Power Management |
Frequently asked questions
What are the primary functional differences between the AMC1300BDWV and AMC1311BDWV?
The AMC1300BDWV is an isolated amplifier designed for current sensing with a ±250 mV input range, while the AMC1311BDWV is an isolated amplifier designed for voltage sensing with a ±1 V input range. Both are functionally similar isolated amplifiers but are optimized for different input signal amplitudes and sensing applications.
Are the AMC1300BDWV and AMC1311BDWV pin-to-pin compatible?
Yes, both devices are offered in the same 8-pin SOIC (DWV) package with identical pinout assignments, allowing them to share a common PCB footprint. However, pin compatibility does not guarantee functional interchangeability without validating the input range and application requirements.
What input voltage range does each device support?
The AMC1300BDWV supports a linear input range of ±250 mV, making it suitable for shunt-based current sensing. The AMC1311BDWV supports a linear input range of ±1 V, making it suitable for divided-down voltage sensing. The input range difference is the key selection criterion between the two parts.
Do both devices provide reinforced isolation?
Yes, both the AMC1300BDWV and AMC1311BDWV are reinforced isolated amplifiers rated for 5 kV RMS isolation per UL 1577, and both support a working voltage of 1.5 kV peak per VDE V 0884-11. Isolation performance is equivalent between the two devices.
Can the AMC1300BDWV be used for voltage sensing or the AMC1311BDWV for current sensing?
Each device is optimized for its intended input range. Using the AMC1300BDWV for voltage sensing would require scaling the voltage down to within ±250 mV, while using the AMC1311BDWV for current sensing would require a shunt signal large enough to utilize its ±1 V range. Selection should be based on matching the input signal amplitude to the device's linear range for optimal accuracy.
What are the supply voltage and output characteristics of these devices?
Both devices 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 both provide a differential analog output. The output common-mode and gain characteristics are defined in the respective datasheets and should be verified for the target signal chain.
Which device should be selected for a motor drive current-sense design?
For motor drive current sensing using a shunt resistor, the AMC1300BDWV is typically selected because its ±250 mV input range matches the low-level differential signal developed across a shunt. The AMC1311BDWV is better suited to DC-link or bus voltage sensing where a larger input range is required.