Overview
The Broadcom HCPL-7840-500E is a high-performance isolation amplifier designed for accurate and reliable current sensing in electronic motor drives and other high-noise environments. This component utilizes advanced sigma-delta (Σ-Δ) analog-to-digital converter technology, chopper stabilized amplifiers, and a fully differential circuit topology to provide excellent isolation, accuracy, and stability. The HCPL-7840 is fabricated using Broadcom's 0.8-μm CMOS IC process and is available in a compact, auto-insertable 8-pin DIP package, as well as a gull-wing surface mount option.
Key Specifications
| Specification | Value |
|---|---|
| Common-Mode Rejection | 15 kV/μs at VCM = 1000V |
| Gain Drift vs. Temperature | 0.00025 V/V/°C |
| Input Offset Voltage | 0.3 mV |
| Bandwidth | 100 kHz |
| Nonlinearity | 0.004% |
| Package Type | 8-pin DIP, SOP-8-2.54mm |
| Safety Approvals | UL 1577, CSA, IEC/EN/DIN EN 60747-5-5 |
| Power Supply Voltage | 4.5V to 5.5V |
Key Features
- Advanced Sigma-Delta (Σ-Δ) A/D converter technology for high accuracy and stability.
- Fully differential circuit topology for excellent common-mode rejection.
- Compact, auto-insertable standard 8-pin DIP package and gull-wing surface mount option.
- High common-mode transient rejection capability (up to 10 kV/μs).
- Low gain drift vs. temperature (0.00025 V/V/°C).
- Low input offset voltage (0.3 mV).
- Wide bandwidth (100 kHz).
- High nonlinearity performance (0.004%).
- Worldwide regulatory safety approvals.
Applications
The HCPL-7840-500E is primarily designed for current sensing in electronic motor drives, where it can accurately monitor motor currents despite high common-mode voltage swings. It is also suitable for general analog signal isolation applications that require high accuracy, stability, and linearity in noisy environments.
Q & A
- What is the primary application of the HCPL-7840-500E?
The primary application is current sensing in electronic motor drives. - What technology does the HCPL-7840-500E use for analog-to-digital conversion?
It uses sigma-delta (Σ-Δ) analog-to-digital converter technology. - What is the common-mode rejection capability of the HCPL-7840-500E?
It can reject common-mode transients up to 15 kV/μs at VCM = 1000V. - What is the gain drift vs. temperature of the HCPL-7840-500E?
The gain drift vs. temperature is 0.00025 V/V/°C. - What is the input offset voltage of the HCPL-7840-500E?
The input offset voltage is 0.3 mV. - What is the bandwidth of the HCPL-7840-500E?
The bandwidth is 100 kHz. - What are the safety approvals for the HCPL-7840-500E?
It has approvals from UL 1577, CSA, and IEC/EN/DIN EN 60747-5-5. - What are the package options for the HCPL-7840-500E?
It is available in an 8-pin DIP package and a gull-wing surface mount option. - What is the power supply voltage range for the HCPL-7840-500E?
The power supply voltage range is 4.5V to 5.5V. - Is the HCPL-7840-500E RoHS compliant?
Yes, it is RoHS compliant.
