Part A
AMC1300BDWV
Texas Instruments
- Lifecycle
- Active
- Stock
- 6086 PCS
- Package
- SOIC-8
- Series
- Amplificateur linéaire - spécial
Replacement verdict
Compatible functional replacement candidate
The AMC1302DWV is a functional replacement candidate for the AMC1300BDWV in isolated current-sensing applications, sharing the same isolated amplifier architecture, SOIC-8 (DWV) footprint, and 5 V supply rail. Designers must validate the higher input offset and gain error tolerance of the AMC1302DWV against system accuracy budgets, and confirm that the reduced input voltage range still covers the target shunt signal swing before committing to production.
Package Type
High match
Isolation Rating
High match
Input Voltage Range
Validation required
Accuracy and Offset
Validation required
Parts at a glance
Part B
AMC1302DWV
Texas Instruments
- Lifecycle
- Active
- Stock
- 5151 PCS
- Package
- SOIC-8
- Series
- Amplificateur linéaire - spécial
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 | AMC1302DWV | Why it matters |
|---|---|---|---|
| Input Voltage Range | ±250 mV | ±50 mV | Defines the differential signal span the isolated amplifier can accept; the AMC1302 targets much smaller shunt drops, so it is not a drop-in replacement where a ±250 mV input is required. |
| Fixed Gain | 8.2 V/V | 41 V/V | Gain sets the output scaling relative to the input; the five-fold difference means the downstream ADC scaling and system calibration must be redesigned when substituting one for the other. |
| Input Offset Voltage (max) | ±0.3 mV | ±0.05 mV | Offset error directly limits DC measurement accuracy; the AMC1302 offers a tighter offset, which matters for precision current sensing but changes the error budget when swapping parts. |
| Input Bias Current (max) | ±30 µA | ±25 µA | Bias current flowing through the shunt and filter resistors creates additional offset error; differing values affect accuracy when the external input network is kept unchanged. |
| Common-Mode Input Range | -150 mV to 320 mV (with respect to GND1) | -160 mV to 320 mV (with respect to GND1) | Determines the allowable shunt common-mode voltage; slight differences affect headroom in high-side or low-side sensing topologies. |
| Input Bandwidth (-3 dB) | 310 kHz | 280 kHz | Bandwidth affects the response speed to current transients; a lower bandwidth part may not meet the loop response requirements of a given motor or inverter design. |
| Isolation Rating (VISO) | 5000 V RMS (reinforced, per UL1577) | 5000 V RMS (reinforced, per UL1577) | Isolation rating is a safety-critical parameter; identical ratings mean both meet the same reinforced isolation requirement for high-voltage systems. |
| Supply Voltage (VDD1 / VDD2) | 3.0 V to 5.5 V (both sides) | 3.0 V to 5.5 V (both sides) | Supply compatibility ensures the part can operate from the same rails; matching ranges simplify substitution without power-rail changes. |
| Package | 8-pin SOIC (DWV) | 8-pin SOIC (DWV) | Identical package and pinout allow board-level drop-in placement, though electrical differences still require circuit revalidation. |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | Matching temperature ranges confirm both parts suit the same industrial environments without derating differences. |
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 | AMC1300BDWV | AMC1302DWV |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Active |
| Type | Isolation | Isolation |
| Applications | Current Sensing, Power Management | Current Sensing, Power Management |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the AMC1300BDWV and AMC1302DWV?
The AMC1300BDWV is an isolated amplifier with a fixed gain of 8.2 and a ±250 mV input range, while the AMC1302DWV is an isolated amplifier with a fixed gain of 41 and a ±50 mV input range. Both are single-channel, reinforced isolated amplifiers in a 5-pin SOIC (DWV) package, but they differ in input voltage range, gain, and corresponding signal-chain design targets.
Do the AMC1300BDWV and AMC1302DWV use the same package and pinout?
Yes. Both devices are offered in the same 5-pin SOIC (DWV) package with the same pin functions (VDD1, INP, INN, VDD2, OUT), allowing a common PCB footprint. However, the different gain and input range mean the surrounding signal conditioning and system calibration must be revalidated if substituting one for the other.
What isolation rating do the AMC1300BDWV and AMC1302DWV provide?
Both devices are reinforced isolated amplifiers rated for 5 kVRMS isolation per UL 1577 and provide a working voltage of 1.5 kVRMS per VDE V 0884-11, with a maximum transient isolation voltage of 12.8 kVPEAK. These ratings are common to both parts and support high-voltage industrial measurement applications.
What input voltage range does each device support?
The AMC1300BDWV supports a linear input range of ±250 mV, while the AMC1302DWV supports a linear input range of ±50 mV. The narrower input range of the AMC1302DWV is intended for low-level shunt sensing where a higher gain (41 vs. 8.2) improves resolution near the ADC.
Can the AMC1300BDWV and AMC1302DWV be used for shunt-based current sensing?
Yes. Both are designed for isolated shunt-based current sensing in motor drives, inverters, and power supplies. The AMC1300BDWV suits shunt voltages up to ±250 mV, while the AMC1302DWV suits smaller shunt voltages up to ±50 mV, so the choice depends on the shunt value and desired full-scale current range.
Are the AMC1300BDWV and AMC1302DWV pin-to-pin compatible for direct substitution?
They share the same DWV package and pinout, so they are physically pin-compatible. However, because the gain (8.2 vs. 41) and input range (±250 mV vs. ±50 mV) differ, a direct substitution requires recalibration of the downstream ADC scaling and verification that the shunt voltage stays within the new input range.
What supply voltages do the AMC1300BDWV and AMC1302DWV require?
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, supporting 3.3 V and 5 V logic systems on either side of the isolation barrier.
Which device offers better resolution for low-level shunt signals?
The AMC1302DWV, with its higher fixed gain of 41 and ±50 mV input range, provides finer resolution for low-level shunt signals compared with the AMC1300BDWV, which has a gain of 8.2 and a ±250 mV input range. The appropriate choice depends on the expected shunt voltage magnitude and the ADC full-scale input.