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Product description

The ACPL-C799-000E device is a 1-bit, second-order sigma-delta (Σ-Δ) modulator that converts analog input signals into high level, current-isolated high-speed data streams based on optical coupling technology. The ACPL-C799 is powered by a 5V supply and has a dynamic range of 77 dB with an appropriate digital filter. Differential inputs of ±50 mV (full scale and ±80 mV) are ideal for directly connecting shunt resistors or other low-level signal sources in applications such as motor phase current measurement.

With a minimum insulation distance of 0.5 mm (DTI), the ACPL-C799 provides reliable reinforced insulation and high operating insulation voltage for fail-safe designs. This excellent isolation performance is superior to devices that include capacitive or magnetic coupling based on DTI in the micron range. This isolated ADC, in a stretched SO-8 (SSO-8) package, offers reliability, small size, isolation and overtemperature performance that motor drive designers need to accurately measure current at a lower price than traditional current sensors.

Feature

10 MHz internal clock

One-bit second-order sigma-delta modulator

16-bit resolution without lost code (12-bit ENOB)

77  dB SNR typ

1.3 μV /° C Maximum offset drift

+ 1% gain error

Internal reference voltage

+ 50 mV linear range, single power supply 5 V (+±80 mV full scale)

3 V to digital interface 5.5V Wide power range

Operating temperature range - 40°C to + 105°C

Package of SSO-8

25 kV μs common mode transient immunity

Safety and regulatory approvals:

IEC/EN/DIN EN 60747-5-5:14 14 V peak working insulation voltage

UL 1577:5000 V rms / 1min isolation voltage

CSA: Notification of component acceptance

Applications

Servo drive and motor

Motor phase and rail current detection

Inverter current detection

Industrial process control

Data acquisition system

Universal current detection

Replace the traditional current sensor