Part A
AMC1300DWVR
Texas Instruments
- Lifecycle
- Active
- Stock
- 1951 PCS
- Package
- SOIC-8
- Series
- Amplificateur linéaire - spécial
Replacement verdict
Compatible functional replacement candidate
The AMC1306M25DWVR and AMC1300DWVR are both isolated delta-sigma modulator amplifiers in the same SOIC-8 (DWV) package with a 5.0 V nominal supply, but they differ in input architecture and output interface. The AMC1306M25DWVR accepts a ±250 mV differential input and provides a single-ended Manchester-coded bitstream output, whereas the AMC1300DWVR accepts a ±250 mV differential input with a differential analog output. Because the output signal format and downstream interface requirements differ, the AMC1306M25DWVR is not a direct drop-in substitute for the AMC1300DWVR; substitution requires validation of the receiving digital filter or ADC interface.
Output Type
Validation required
Input Voltage Range
High match
Package Type
High match
Supply Voltage
High match
Parts at a glance
Part B
AMC1306M25DWVR
Texas Instruments
- Lifecycle
- Active
- Stock
- 4162 PCS
- Package
- SOIC-8
- Series
- Acquisition de données - ADC DAC - dédié
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AMC1306M25DWVR | AMC1300DWVR | Why it matters |
|---|---|---|---|
| Product Type | Isolated delta-sigma modulator | Isolated amplifier | The output format differs fundamentally: a modulator outputs a 1-bit bitstream requiring digital filtering, while an amplifier outputs an analog voltage, so they are not drop-in substitutes. |
| Output Signal | Digital bitstream (1-bit, Manchester-coded) | Differential analog voltage | Downstream circuitry must match the output type; a bitstream needs an SDFM or digital filter, whereas an analog output feeds an ADC or comparator directly. |
| Input Voltage Range | ±250 mV | ±250 mV | Both target shunt-based current sensing with the same small differential input span, so signal scaling at the input is comparable. |
| Isolation Rating | 5000 V RMS (reinforced) | 5000 V RMS (reinforced) | Reinforced isolation is critical for safety and working-voltage ratings in high-voltage motor-drive and inverter applications. |
| Supply Voltage | 3.0 V to 5.5 V (both sides) | 3.0 V to 5.5 V (both sides) | Matching supply ranges allows reuse of the same power rails on both the high and low voltage sides. |
| Package | 8-pin SOIC (DWV) | 8-pin SOIC (DWV) | Identical package and pin count simplify PCB footprint reuse, though pin functions differ between the two devices. |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | Equivalent industrial temperature ratings ensure both parts suit harsh environments. |
| Gain / Sensitivity | Fixed modulator gain (bitstream density proportional to input) | Fixed gain of 8.2 V/V | The transfer characteristic differs: the modulator encodes input as bitstream density, while the amplifier provides a defined analog gain, affecting system calibration. |
| Bandwidth | Up to ~20 MHz clock, signal bandwidth set by digital filter | ~100 kHz (typical small-signal bandwidth) | The modulator supports higher effective bandwidth when paired with a fast digital filter, whereas the amplifier bandwidth is fixed by its analog design. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AMC1300DWVR | AMC1306M25DWVR |
|---|---|---|
| Part Status | Active | Active |
| Type | Isolation | Isolated Module |
| Applications | Current Sensing, Power Management | - |
| Mounting Type | Surface Mount | Surface Mount |
| Number of Channels | - | 1 |
| Resolution(Bits) | - | 16 b |
| Sampling Rate(Per Second) | - | 78k |
| Data Interface | - | CMOS, Serial |
| Voltage Supply Source | - | Analog and Digital |
| Voltage - Supply | - | 2.7V ~ 5.5V |
| Operating Temperature | - | -40°C ~ 125°C |
Frequently asked questions
What are the key differences between the AMC1306M25DWVR and the AMC1300DWVR?
The AMC1306M25DWVR is a single-channel, isolated delta-sigma modulator with a ±250 mV input range and a fixed 20 MHz clock, designed for shunt-based current sensing with a Manchester-encoded or unencoded bitstream output. The AMC1300DWVR is an isolated amplifier with a ±250 mV input range and a fixed gain of 8.2, providing a differential analog output. The AMC1306M25DWVR outputs a digital bitstream for use with an external digital filter, while the AMC1300DWVR outputs an analog signal for direct connection to an ADC.
Are the AMC1306M25DWVR and AMC1300DWVR pin-to-pin compatible?
Both devices are offered in the same 8-pin SOIC (DWV) package with the same pin count and footprint, but their pin functions differ. The AMC1306M25DWVR provides a clock input and a data output, whereas the AMC1300DWVR provides analog output pins (VOUTP, VOUTN) and does not have a clock input. Therefore, they are not functionally pin-to-pin compatible and cannot be dropped into the same PCB layout without redesign.
What is the input voltage range of both devices?
Both the AMC1306M25DWVR and the AMC1300DWVR are specified with a linear input voltage range of ±250 mV, making them suitable for low-side shunt resistor current sensing in motor drive and inverter applications.
What output type does each device provide?
The AMC1306M25DWVR provides a digital delta-sigma modulated bitstream output, which requires an external digital filter (such as an FPGA or microcontroller with an SDFM/sinc filter) to reconstruct the analog value. The AMC1300DWVR provides a differential analog voltage output with a fixed gain of 8.2, which can be fed directly into an ADC or analog control loop.
What is the isolation rating of these devices?
Both the AMC1306M25DWVR and the AMC1300DWVR are reinforced isolated devices rated for 5 kV RMS isolation per UL 1577 and provide basic isolation according to IEC 60747-17, with a working voltage of 1.5 kV peak. Designers should confirm the exact isolation specifications in the respective manufacturer datasheets for their target application.
Which device is better suited for a digital control loop?
The AMC1306M25DWVR is generally preferred for digital control loops because its delta-sigma bitstream output can be processed by a digital filter in an MCU or FPGA, enabling high-resolution current measurement with galvanic isolation. The AMC1300DWVR is better suited for analog control loops or systems where an external ADC samples the isolated analog output.
Do both devices require a separate isolated power supply?
Yes. Both the AMC1306M25DWVR and the AMC1300DWVR require a high-side isolated supply (typically 3.3 V or 5 V) in addition to the low-side supply, because they are galvanically isolated devices. The isolated supply powers the input-side circuitry and must meet the isolation requirements of the application.