5 MHz to 21 MHz master clock input frequency
Offset drift vs. temperature: ±0.6 μV/°C maximum
SNR: 86 dB typical
16 bits, no missing codes
Full-scale analog input voltage range: ±320 mV
ENOB: 14 bits typical
IDD1: 10 mA maximum
On-board digital isolator
Operating temperature range: −40°C to +125°C
High common-mode transient immunity: 150 kV/μs minimum,
VDD2 = 3.3 V
8-lead SOIC_IC with increased creepage
Safety and regulatory approvals (pending)
5700 V rms for 1 minute per UL 1577
CSA Component Acceptance Notice 5A
VDE Certificate of Conformity
DIN V VDE V 0884-10: VIORM = 1270 VPEAK
DIN V VDE V 0884-11: VIORM = 1060 VPEAK
Shunt current monitoring
AC motor controls
Power and solar inverters
Wind turbine inverters
Analog-to-digital and optoisolator replacement
The ADuM7701 is a high performance, second-order, Σ-Δ
modulator that converts an analog input signal into a high
speed, single-bit data stream, with on-chip digital isolation
based on Analog Devices, Inc., iCoupler® technology. The
device operates from a 4.5 V to 5.5 V power supply range
(VDD1) and accepts a pseudo differential input signal of
±250 mV (±320 mV full-scale). The pseudo differential input
is ideally suited to shunt voltage monitoring in high voltage
applications where galvanic isolation is required.
The analog input is continuously sampled by a high performance
analog modulator and converted to a ones density digital output
stream with a data rate of up to 21 MHz. The original information
FUNCTIONAL BLOCK DIAGRAM
can be reconstructed with an appropriate sinc3 digital filter to
achieve an 86 dB signal-to-noise ratio (SNR) at 78.1 kSPS with a
256 decimation rate and a 20 MHz master clock. The serial
input and output operates from a 5 V or a 3 V supply (VDD2).
The serial interface is digitally isolated. High speed complementary
metal-oxide semiconductor (CMOS) technology, combined with
monolithic transformer technology, results in the on-chip
isolation providing outstanding performance characteristics,
superior to alternatives such as optocoupler devices. The
ADuM7701 device is available in both a 16-lead and an 8-lead
wide-body SOIC and has an operating temperature range of
−40°C to +125°C.
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
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