Part A
AMC1311DWVR
德州儀器
- Lifecycle
- Active
- Stock
- 1397 件
- Package
- SOIC-8
- Series
- 線性放大器-專用
Replacement verdict
Compatible functional replacement candidate
The AMC1306M25DWVR and AMC1311DWVR share the same isolated delta-sigma modulator architecture, SOIC-8 (DWV) package, and 5 V supply rail, making them viable functional candidates in isolated sensing designs. However, the AMC1306M25DWVR is a ±250 mV input current-sense modulator with a 20 MHz clock, while the AMC1311DWVR is a ±1 V input voltage-sense modulator with a 10 MHz clock, so input range, clock frequency, and output filter scaling must be revalidated before substitution.
Input Signal Range
Validation required
Clock Frequency
Validation required
Package Type
High match
Supply Voltage
High match
Parts at a glance
Part B
AMC1306M25DWVR
德州儀器
- Lifecycle
- Active
- Stock
- 4162 件
- Package
- SOIC-8
- Series
- 資料獲取-ADC DAC-專用
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 | AMC1311DWVR | Why it matters |
|---|---|---|---|
| Input Type | Current (shunt-based, differential) | Voltage (high-impedance, differential) | Determines whether the device measures current via a shunt or directly senses voltage; the two are not functionally interchangeable. |
| Input Voltage Range | ±250 mV | ±1 V (2 V full-scale) | Sets the maximum signal the input can accept; a mismatch can saturate the input or reduce measurement resolution. |
| Gain | 8 (fixed) | 1 (fixed) | The gain defines the input-to-output scaling; different gains require different signal conditioning and calibration. |
| Output Interface | 1-bit delta-sigma modulator (bitstream) | Analog differential output | A digital bitstream output requires a digital filter/decoder, while an analog output feeds an ADC directly; the downstream circuitry differs fundamentally. |
| Isolation Rating | 5 kV RMS (reinforced) | 5 kV RMS (reinforced) | Both provide reinforced galvanic isolation, so safety isolation capability is equivalent between the two parts. |
| Supply Voltage | 3.3 V or 5 V (high side), 3.3 V or 5 V (low side) | 3.3 V or 5 V (high side), 3.3 V or 5 V (low side) | Both support flexible dual supplies, so power rail compatibility is similar for either device. |
| Bandwidth | ~1 MHz (modulator clock dependent) | ~100 kHz (typical small-signal) | Bandwidth affects how fast the signal can be tracked; the modulator offers much higher effective bandwidth than the analog amplifier. |
| Package | 8-pin SOIC (DW) | 8-pin SOIC (DW) | Identical package and pin count allow similar board footprint, though pin functions differ. |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | Both cover the same industrial temperature range, so environmental compatibility is equivalent. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AMC1311DWVR | AMC1306M25DWVR |
|---|---|---|
| Part Status | Active | Active |
| Type | Isolation | Isolated Module |
| 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 fundamental functional differences between the AMC1306M25DWVR and the AMC1311DWVR?
The AMC1306M25DWVR is a precision, isolated delta-sigma modulator with a ±250 mV input range, designed for current sensing across shunts. The AMC1311DWVR is an isolated amplifier with a ±1 V input range and a fixed gain of 1, designed for voltage sensing. They serve different signal-chain roles and are not functionally interchangeable.
Do the AMC1306M25DWVR and AMC1311DWVR share the same package and pinout?
Both devices are offered in the same 8-pin SOIC (DWV) package, but their pin functions and output interfaces differ. The AMC1306M25DWVR provides a digital bitstream output, while the AMC1311DWVR provides a differential analog output. Pin-level compatibility must be verified against the respective datasheets before any layout reuse.
What are the input voltage ranges of the AMC1306M25DWVR and AMC1311DWVR?
The AMC1306M25DWVR has a linear input range of ±250 mV, optimized for shunt-based current measurement. The AMC1311DWVR has a linear input range of ±1 V, intended for isolated voltage sensing. The input ranges are not equivalent and cannot be substituted without recalibration and validation.
How do the output interfaces of the AMC1306M25DWVR and AMC1311DWVR differ?
The AMC1306M25DWVR outputs a 1-bit delta-sigma modulated bitstream that requires a digital filter or modulator interface on the controller side. The AMC1311DWVR outputs a differential analog voltage that can be fed directly to an ADC or analog front end. The receiving circuitry must match the respective output type.
Are the isolation ratings of the AMC1306M25DWVR and AMC1311DWVR the same?
Both devices are reinforced isolated components from Texas Instruments using capacitive isolation technology, but the exact isolation voltage, working voltage, and certification ratings must be confirmed from the respective datasheets. Designers should not assume identical isolation specifications without verification.
Can the AMC1306M25DWVR be used for voltage sensing and the AMC1311DWVR for current sensing?
Each device is optimized for its intended application. The AMC1306M25DWVR's ±250 mV range suits low-level shunt signals, while the AMC1311DWVR's ±1 V range suits divided voltage rails. Using either outside its intended range requires external signal conditioning and full validation against datasheet limits.
What supply voltage requirements apply to the AMC1306M25DWVR and AMC1311DWVR?
Both devices use separate high-side and low-side supplies to maintain isolation. The exact nominal supply voltages for each side must be taken from the respective manufacturer datasheets. Designs must not assume identical supply rails across the two parts without verification.
What should be verified before considering the AMC1306M25DWVR and AMC1311DWVR as substitutes in an existing design?
Designers must verify input range, output interface type, supply requirements, isolation specifications, gain and accuracy characteristics, and PCB pin functions against the official Texas Instruments datasheets. Because the two parts perform different signal-chain functions, direct substitution is generally not valid without redesign.