TLP7830(D4-LF4 - 16-Bit Isolated Delta-Sigma Modulator | Toshiba
MPN: TLP7830(D4-LF4 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.0562 | $2.06 |
| 10 | $2.0562 | $20.56 |
| 100 | $2.0562 | $205.62 |
| 500 | $2.0562 | $1,028.10 |
| 1,000 | $2.0562 | $2,056.20 |
TLP7830(D4-LF4 Overview
An isolated delta-sigma modulator is an isolation amplifier that converts an analog input into a serial digital bitstream. In this signal chain, it belongs to the hierarchy isolation amplifier, isolated measurement IC, signal-conditioning IC, and semiconductor. Optical isolation separates the measured input-side circuitry from the logic-side interface while converting the signal into digital data for subsequent processing.
The TLP7830 provides one channel, 16-bit resolution, and a serial interface according to the verified product and comparison data. Its 5000 Vrms isolation rating supports reinforced separation in motor-drive systems, while the compact SO8L package reduces board area compared with larger isolation solutions. The device is supplied for dual-side operation because both the input and output sides require supply rails.
Toshiba classifies the TLP7830 as an isolation amplifier and isolated delta-sigma modulator, not as a conventional analog-output amplifier. This distinction matters in design: the downstream receiver must clock and decode the serial bitstream rather than looking for an analog voltage at the output. The verified comparison data identifies a 3 V to 5.5 V supply range, 16-bit resolution, serial interface, and one channel.
Typical applications include three-phase motor phase-current monitoring, inverter control feedback, power-converter current sensing, industrial motor drives, and isolated voltage measurement. In these systems, the modulator can provide a digital measurement path across a high-potential barrier while keeping control-side circuitry electrically separate.
Designers should verify the exact LF4 pinout and capacitor requirements against the manufacturer datasheet before layout. Input-side and output-side bypass capacitors should be placed close to their associated pins, and the isolation barrier must not be bridged by copper or signal traces. The available web results do not provide complete electrical timing, accuracy, temperature, or package dimensions.
This page consolidates the verified Toshiba product information, distributor identifiers, package details, and application context while clearly identifying unavailable parameters. It is intended to support initial component selection, sourcing, and datasheet review rather than replace the manufacturer datasheet during final design sign-off.
Drop-in alternatives for TLP7830(D4-LF4 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TLP7830(D4-TP4,E
✅ Drop-In📋 Reference alternative (not in catalog)
TLP7830(TP4,E
✅ Drop-In📋 Reference alternative (not in catalog)
TLP7820(A-LF4,E
✅ Drop-In📋 Reference alternative (not in catalog)
TLP7830(D4-LF4 Maximum Ratings & Electrical Characteristics
| Product Type | Photocoupler isolation amplifier / isolated delta-sigma modulator |
| Isolation Voltage | 5000 Vrms |
| Resolution | 16 bit |
| Number of Channels | 1 channel |
| Output Type | Digital serial output |
| Supply Voltage Range | 3 V to 5.5 V |
| Supply Configuration | Dual supply |
| Package | SO8L (LF4), 8-pin |
| Package Type | 8-SOIC / SO8L surface-mount package |
| Mounting Type | Surface mount |
| Operating Temperature Range | -40 °C to +105 °C |
| RoHS Status | unknown |
| REACH Status | unknown |
| Manufacturer Product Status | Active |
TLP7830(D4-LF4 Pin Configuration
| Pin 1 | [DATA_NEEDED: pin 1 name] — Pin name not available in the supplied verified data |
| Pin 2 | VDD1 — Input-side supply connection; verified mirror notes pins 2, 3, and 4 are shorted together |
| Pin 3 | VDD1 — Input-side supply connection; verified mirror notes pins 2, 3, and 4 are shorted together |
| Pin 4 | VDD1 — Input-side supply connection; verified mirror notes pins 2, 3, and 4 are shorted together |
| Pin 5 | [DATA_NEEDED: pin 5 name] — Pin name not available in the supplied verified data |
| Pin 6 | [DATA_NEEDED: pin 6 name] — Pin name not available in the supplied verified data |
| Pin 7 | [DATA_NEEDED: pin 7 name] — Pin name not available in the supplied verified data |
| Pin 8 | [DATA_NEEDED: pin 8 name] — Pin name not available in the supplied verified data |
Typical Applications
TLP7830(D4-LF4 is suitable for 6 applications: Three-Phase Motor Phase-Current Sensing, Inverter Voltage Sensing, Industrial Servo Drive Feedback, Power-Converter Current Monitoring, Renewable-Energy Inverter Control, High-Voltage Test and Measurement.
Three-Phase Motor Phase-Current Sensing
The TLP7830(D4-LF4 fits three-phase motor drives because Toshiba identifies motor phase-current sensing as a primary application and specifies a 16-bit digital delta-sigma modulator with 5000 Vrms isolation. Place the isolated sensing channel between the current-sense front end and the digital controller, then decode the serial output in the MCU or DSP. The verified 3 V to 5.5 V supply range supports low-voltage digital-side implementation, but input range, bandwidth, and timing must match the current sensor and motor switching conditions.
Recommended
Inverter Voltage Sensing
TLP7830(D4-LF4 is appropriate for inverter voltage-feedback paths where the measured node is electrically separated from the controller. Its optically isolated, 16-bit serial architecture provides a digital measurement path across a 5000 Vrms-rated barrier while avoiding an analog signal routed through the isolation region. The controller must support the modulator's serial protocol and decoding requirements. Because the available data does not specify the complete analog input range or conversion timing, the exact shunt or divider network should be selected only after checking the Toshiba datasheet.
Recommended
Industrial Servo Drive Feedback
The TLP7830(D4-LF4 can form part of an isolated feedback chain in industrial servo systems, where motor current or voltage information must cross a high-potential barrier. The device's verified 16-bit digital resolution and serial output suit deterministic digital signal acquisition, while its 8-pin surface-mount package helps reduce board area. The design must preserve the isolation boundary in PCB routing, maintain suitable clearances, and provide local decoupling on both sides. Verify operating-temperature, timing, and input-conditioning requirements against the exact motor-drive environmental specification.
Recommended
Power-Converter Current Monitoring
For power-converter current monitoring, the TLP7830(D4-LF4 provides an isolated digital measurement path between a high-side or high-power sensing stage and the control electronics. Its verified 5000 Vrms isolation supports designs that require substantial galvanic separation, and the 16-bit serial format avoids carrying a low-level analog measurement signal across the barrier. The system designer must verify that the modulator's input range and bandwidth support the selected shunt or sensor, and that the downstream controller can correctly receive the serial data stream.
Recommended
Renewable-Energy Inverter Control
TLP7830(D4-LF4 is suited to isolated current and voltage feedback in renewable-energy inverters, where photovoltaic or storage power stages operate at voltages and potentials unsuitable for direct controller-sensor connections. Its optically isolated delta-sigma modulation and 16-bit serial output help create a controlled measurement boundary, while the 8-pin package supports compact gate-driver and control-board layouts. Exact sensing bandwidth, safety clearance, and environmental requirements must be established for the installation. The available verified data confirms the isolation and digital architecture but does not provide all timing and accuracy limits.
Recommended
High-Voltage Test and Measurement
The TLP7830(D4-LF4 can be used in isolated instrumentation that digitizes a measurement from a high-potential circuit while keeping the data-processing side separated. The verified 5000 Vrms rating and digital output are useful when the test system needs a repeatable serial measurement interface instead of an analog isolation amplifier. The instrument designer must still validate creepage, clearance, barrier construction, input range, and calibration performance for the actual working voltage. The exact SO8L pin assignments and recommended external components should be obtained from the official Toshiba datasheet.
Recommended
Recommended Products Summary
Engineering reference data for TLP7830(D4-LF4 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLP7830(D4-TP4,E | TLP7830(TP4,E | TLP7820(A-LF4,E |
|---|---|---|---|---|
| Product Type | Isolated delta-sigma modulator | Isolated delta-sigma modulator | Isolated delta-sigma modulator | Isolation IC for current sensing and power management |
| Manufacturer | Toshiba | Toshiba | Toshiba | Toshiba |
| Package | SO8L (LF4) / 8-SOIC | 8-SOIC / SO8L | 8-SOIC / SO | 8-SOIC |
Key Differentiators
- Verified 16-bit isolated delta-sigma resolution (vs TLP7820(A-LF4,E)
- Explicit 5000 Vrms isolation rating (vs TLP7820(A-LF4,E)
- Single-channel serial modulator architecture (vs TLP7820(A-LF4,E)
- Same verified 8-SOIC family format for targeted variant migration (vs TLP7830(TP4,E)
Design Notes
Keep the isolation barrier physically continuous between input-side and output-side copper. Route input-side traces, bypass capacitors, and analog sensing components on one side of the barrier, and digital clock and data lines on the other. The verified datasheet mirror specifically states that bypass capacitors should be placed as close as possible to their pins; use the exact capacitor values and pin assignments from the official Toshiba datasheet.
Treat the serial output as a digital communication interface rather than an analog output. The receiving controller must meet the device's clock and data timing requirements, use appropriate trace termination and series resistance where required, and be tested for signal integrity across the full operating-temperature range. The supplied data does not provide complete timing values, so do not infer them from the 16-bit resolution alone.
Provide local decoupling for both isolated sides and verify that each supply rail remains within the verified 3 V to 5.5 V range. Because TLP7830(D4-LF4 uses a dual-supply architecture, input-side and output-side rails must be designed independently, with attention to startup behavior and ground return paths. Confirm the official recommended capacitor values and rail sequencing before releasing the PCB.
Do not substitute a related Toshiba suffix solely because the package is shown as 8-SOIC. The available comparison data identifies TLP7830(D4-TP4,E, TLP7830(TP4,E, and TLP7820(A-LF4,E as related parts, but exact pinout, timing, accuracy, and qualification details are not fully available. Review the manufacturer datasheet and validate the replacement in the target system before production use.
Compliance Information
The supplied verified product and distributor data do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Compliance must be confirmed from the manufacturer documentation or supply-chain declaration.
