The ADEMO139C is a low drift, low output impedance, fully
differential, programmable-gain amplifier designed for use with a
PCB-based di/dt current sensor and the ADEMA12x 4-channel and
7-channel ADC. An output common-mode (CM) voltage of 1.2V and
supply voltage of 3.3V allows direct connection to ADEMA12x ADC.
The ADEMO139C has high gain, low noise, and excellent common-
mode rejection ratio (CMRR) and power-supply rejection ratio
(PSRR) specifications, which make it ideal for high accuracy energy
measurement applications. The ADEMO139C is specified over the
extended industrial temperature (−40°C to +125°C) and is available
in an 8-lead LFCSP.
The low output impedance of the ADEMO139C allows the amplifier
and ADC to be placed on separate boards connected by a cable.
Compared to ADEMO139A, the ADEMO139C has 1.5× higher gain
across all gain settings and a 1.5× wider output range.
For more details on the ADEMO139C, contact the local Analog Devices, Inc., sales office at www.analog.com/sales.
APPLICATIONS
- Single-phase energy meters
- Polyphase energy meters
- Split-phase energy meters
- Power quality monitoring
- Protective devices
- Smart breakers
- Electric vehicle (EV) chargers
- Machine health
- Smart power distribution units
