Analog Devices Inc. ADUM7704 16-Bit Isolated Sigma-Delta Modulators

Analog Devices Inc. ADUM7704 16-Bit Isolated Sigma-Delta Modulators convert analog input signals into a high-speed, single-bit data stream. The device features on-chip digital isolation based on Analog Devices' iCoupler^® technology. The modulator operates from a 4.5V to 20V power supply range (VDD1). It can accept a pseudo-differential input signal of ±50mV (±64mV full-scale). The pseudo-differential input is ideal for shunt voltage monitoring in high-voltage applications where galvanic isolation is required.

Features

5MHz to 21MHz master clock input frequency
±0.25μV/°C maximum offset drift vs. temperature
82dB typical SNR
16 bits, no missing codes
±64mV full-scale analog input voltage range
13-bits typical ENOB
10mA maximum IDD1
Onboard digital isolator
Operating temperature range
- -40°C to +125°C (16-lead SOIC_W)
- -40°C to +105°C (8-lead SOIC_IC)
150kV/μs minimum high isolation common-mode transient immunity, VDD2 = 3.3V

Wide-body SOICs
- 16-lead SOIC_W
- 8-lead SOIC_IC with increased creepage
Safety and regulatory approvals
- UL recognition from 5700V_rms for 1 minute per UL 1577
- CSA Component Acceptance Notice 5A
- VDE Certificate of Conformity
  - DIN V VDE V 0884-10: V_IORM = 1270V_PEAK
  - DIN V VDE V 0884-11: V_IORM = 1060V_PEAK (pending)