Part A
AMC1300BDWVR
Texas Instruments
- Lifecycle
- Active
- Stock
- 1306 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker
Replacement verdict
Compatible functional replacement candidate
The AMC1336DWVR and AMC1300BDWVR are both isolated delta-sigma modulators in a 16-pin SOIC package with a ±50 mV input range and 5 V supply, making them functionally comparable for shunt-based current sensing. However, the AMC1336DWVR offers a higher maximum data rate and a wider specified operating temperature range, while the AMC1300BDWVR provides a higher typical input common-mode rejection. Designers should validate clock frequency, output bitstream rate, and thermal margin against the target application before substituting one for the other.
Package Type
High match
Input Voltage Range
High match
Maximum Data Rate
Validation required
Operating Temperature Range
Validation required
Parts at a glance
Part B
AMC1336DWVR
Texas Instruments
- Lifecycle
- Active
- Stock
- 5075 Stückzahl
- Package
- SOIC-8
- Series
- Datenerfassung von ADCs-DACs für besonderen Zweck
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AMC1336DWVR | AMC1300BDWVR | Why it matters |
|---|---|---|---|
| Input Type | Voltage input (isolated delta-sigma modulator) | Current shunt input (isolated amplifier) | Determines the signal the device is designed to sense; a voltage modulator cannot directly replace a shunt current amplifier without external signal conditioning. |
| Output Format | 1-bit delta-sigma bitstream | Differential analog voltage | The downstream interface differs fundamentally: a bitstream requires a digital filter/decoder, while an analog output feeds an ADC or comparator directly. |
| Isolation Rating | 5 kV RMS (reinforced) | 5 kV RMS (reinforced) | Both provide reinforced isolation suitable for high-voltage sensing, so safety isolation capability is equivalent. |
| Input Voltage Range | ±1 V (with ±50 mV linear range) | ±250 mV | The full-scale input span dictates the shunt resistor sizing and the measurable current range; the two parts are not directly interchangeable without rescaling. |
| Supply Voltage | 3.0 V to 5.5 V (high side), 3.0 V to 5.5 V (low side) | 3.0 V to 5.5 V (high side), 3.0 V to 5.5 V (low side) | Both operate over the same supply range, simplifying power rail design when considering substitution. |
| Package | 8-pin SOIC (DW) | 8-pin SOIC (DW) | Identical package and pin count allow the same PCB footprint, though pin functions differ. |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | Both support industrial temperature ranges, so thermal environment is not a differentiator. |
| Gain / Transfer Characteristic | Fixed modulator gain (bitstream density proportional to input) | Fixed gain of 8 (V/V) | The signal transfer function differs; system calibration and scaling must be redesigned when swapping between these parts. |
| Typical Application | Isolated voltage sensing in motor drives and inverters | Isolated current sensing via shunt resistor | The intended measurement target differs, so functional substitutability is limited without circuit redesign. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AMC1300BDWVR | AMC1336DWVR |
|---|---|---|
| Part Status | Active | Active |
| Type | Isolation | Sigma-Delta Modulator |
| Applications | Current Sensing, Power Management | - |
| Mounting Type | Surface Mount | Surface Mount |
| Number of Channels | - | 1 |
| Resolution(Bits) | - | 16 b |
| Sampling Rate(Per Second) | - | 82k |
| Data Interface | - | Serial |
| Voltage Supply Source | - | Analog and Digital |
| Voltage - Supply | - | 3V ~ 5.5V, 2.7V ~ 5.5V |
| Operating Temperature | - | -40°C ~ 125°C (TA) |
Frequently asked questions
What are the primary functional differences between the AMC1336DWVR and the AMC1300BDWVR?
The AMC1336DWVR is a precision, isolated delta-sigma modulator designed for current and voltage sensing in high-voltage systems, featuring a ±50 mV input range and a ±1% gain error. The AMC1300BDWVR is an isolated amplifier with a ±250 mV input range and a fixed gain of 8.2, intended for shunt-based current sensing. The AMC1336DWVR outputs a 1-bit delta-sigma bitstream, while the AMC1300BDWVR provides a differential analog output voltage.
Are the AMC1336DWVR and AMC1300BDWVR pin-to-pin compatible?
Both devices are offered in the same 8-pin SOIC (DWV) package with identical pinout assignments for VDD1, VDD2, GND1, GND2, and the input/output signal pins. However, pin-to-pin compatibility does not guarantee functional interchangeability because the output signal formats differ (bitstream vs. analog) and the input voltage ranges differ (±50 mV vs. ±250 mV).
Can the AMC1336DWVR directly replace the AMC1300BDWVR in an existing design?
No, a direct replacement is not possible without redesign. The AMC1336DWVR requires a digital decimation filter (e.g., in an MCU or FPGA) to reconstruct the measured signal from its delta-sigma bitstream, whereas the AMC1300BDWVR provides an analog output that can be fed directly to an ADC. Additionally, the input ranges differ, so the shunt or voltage-divider network must be recalculated.
What are the input voltage ranges of the AMC1336DWVR and AMC1300BDWVR?
The AMC1336DWVR has a specified input voltage range of ±50 mV, optimized for low-level shunt voltage sensing. The AMC1300BDWVR has a specified input voltage range of ±250 mV, allowing it to accommodate larger shunt voltage drops. Both devices are designed for isolated current-sensing applications but target different shunt signal amplitudes.
What isolation ratings do the AMC1336DWVR and AMC1300BDWVR provide?
Both devices are reinforced isolated amplifiers/modulators rated for 5 kV RMS isolation per UL 1577 and provide basic isolation with a working voltage of 1.5 kV peak per VDE V 0884-11. They share the same isolation barrier technology and package creepage/clearance, making them equivalent in isolation performance for high-voltage sensing applications.
Which device is better suited for motor drive current sensing?
Both are suitable, but the choice depends on the shunt design. The AMC1300BDWVR is commonly used with a shunt producing up to ±250 mV, providing an analog output that interfaces directly with a SAR ADC. The AMC1336DWVR is preferred when a digital bitstream output and lower input range (±50 mV) are acceptable, often paired with a delta-sigma filter in the motor controller for high-resolution current feedback.
Do the AMC1336DWVR and AMC1300BDWVR share the same supply voltage requirements?
Yes, 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. The isolated dual-supply architecture is identical, allowing the same power supply design to be reused when switching between the two devices.
What output signal format does each device provide?
The AMC1336DWVR provides a 1-bit delta-sigma modulated bitstream output on the low-voltage side, which must be processed by a digital filter to recover the analog measurement. The AMC1300BDWVR provides a differential analog output voltage with a fixed gain of 8.2, which can be directly sampled by an ADC without digital filtering.