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

Analog Devices Inc. ADUM7704 16-Bit Isolated Sigma-Delta Modulators converts analog input signala 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
Offset drift vs. temperature: ±0.25μV/°C maximum
SNR: 82dB typical
16 bits, no missing codes
Full-scale analog input voltage range: ±64mV
ENOB: 13-bits typical
IDD1: 10mA maximum
On-board digital isolator
Operating temperature range
- −40°C to +125°C (16-lead SOIC_W)
- −40°C to +105°C (8-lead SOIC_IC)
High isolation common-mode transient immunity:
- 150kV/μs minimum, VDD2 = 3.3V

Wide-body SOICs
- 16-lead SOIC_W
- 8-lead SOIC_IC with increased creepage
Safety and regulatory approvals
- UL recognition
  - 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 = 1270 V_PEAK
  - DIN V VDE V 0884-11: V_IORM = 1060 V_PEAK (pending)