Data Sheet

ADE9103/ADE9112/ADE9113

Isolated, Sigma-Delta ADCs with SPI

Rev. A

DOCUMENT FEEDBACK

TECHNICAL SUPPORT

Information furnished by Analog Devices is believed to be accurate and reliable "as is". However, no responsibility is assumed by Analog Devices

for its use, nor for any infringements of patents or other 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. Trademarks and registered

trademarks are the property of their respective owners. All Analog Devices products contained herein are subject to release and availability.

FEATURES

►

2 (ADE9112) or 3 (ADE9113) channel isolated, simultaneously

sampling Σ-Δ ADCs, with integrated isoPower, isolated dc-to-dc

converters

►

3 (ADE9103) channel nonisolated, simultaneously sampling Σ-Δ

ADCs

►

Synchronization of multiple ADE9103/ADE9112/ADE9113 devi-

ces

►

4-wire SPI with bidirectional CRC and daisy-chain functionality

►

Unique SPI readable part ID registers

►

Up to 4 ADE9103/ADE9112/ADE9113 devices clocked from a

single crystal or an external clock

►

IRQ hardware pin and registers for fault detection and robust-

ness

►

Sample rate up to 32 kSPS

►

SNR up to 95 dB

►

±31.25 mV peak analog input voltage range for current channel

►

±500 mV peak single-ended analog input voltage range for

voltage channels

►

Internal voltage reference temperature coefficient: <13 ppm/°C

typical

►

ADC offset drift: <2 nV/°C typical

►

Ideal for both AC and DC measurement systems

►

Single 3.3 V supply for isolated and nonisolated measurements

►

Compact 28-lead, wide-body with finer pitch SOIC package with

8.3 mm creepage

►

Temperature range: −40°C to +125°C

►

Passes CISPR 32 Class B RF Emissions

►

ADE9112 and ADE9113 safety and regulatory approvals

►

IEC 60747-17 certificate of conformity expected

►

5000 V RMS for 1 minute per UL 1577

►

IEC 61010-1 and IEC 62368-1

APPLICATIONS

►

Shunt-based polyphase meters

►

Electric vehicle supply equipment

►

DC meters

►

Power quality monitoring

►

Solar inverters

►

Process monitoring

►

Protective devices

►

Isolated sensor interfaces

GENERAL DESCRIPTION

The ADE9103/ADE9112/ADE9113 are precision simultaneously

sampling Σ-Δ analog-to-digital converters (ADCs) for both DC

and polyphase shunt-based energy metering applications. The

ADE91131 integrates safety certified signal and power galvanic

isolation with three simultaneously sampling fully differential 24-bit

Σ-Δ ADC channels. The ADE9112 features two fully differential Σ-Δ

ADC channels for isolated applications where only a single voltage

channel is required. The ADE9103 is a nonisolated, 3-channel Σ-Δ

ADC for use in applications where isolation is not required, such

as for neutral measurement. The ADE9103/ADE9112/ADE9113 all

include a high-gain, current channel well suited for use with a

shunt resistor as the current sensor. Multiple ADE9103/ADE9112/

ADE9113 devices can be synchronized to sample simultaneously

and provide coherent outputs.

The current channel ADC provides an 86 dBFS signal-to-noise

ratio (SNR), at a sample rate of 4 kSPS, over a 1.65 kHz signal

bandwidth and a typical gain drift of 13 ppm/°C, which enables

down to Class 0.2 accuracy. The voltage ADCs provide an SNR of

91 dBFS over the same sample rate and bandwidth. The high gain

on the current channel (IP and IM) aids the use of lower resistance

shunts for reduced losses due to heat. The low offset drift of 2

nV/°C offers the performance required for DC metering.

The ADE9103/ADE9112/ADE9113 delivers system cost savings

and increased robustness. The main ADE9103/ADE9112/ADE9113

can drive clocks of up to three additional ADE9103/ADE9112/

ADE9113 with a single crystal. The bidirectional, serial port inter-

face (SPI) supports a daisy-chain capability, allowing access to

all registers while reducing the required microcontroller pin count.

The 28-lead SOIC_W_FP allows more compact layouts. Valid data

transfers are ensured with bidirectional, cyclic redundancy check

(CRC) and IRQ pin alerts the system of critical faults. The ADE9112

and ADE9113 pass CISPR 32 Class B emissions on a 2-layer

printed circuit board (PCB) with the addition of a high voltage

capacitor and on a 4-layer PCB with an internal stitching capacitor.

Table 1. ADE9103/ADE9112/ADE9113 Product Comparison

Model

24-Bit Current

Measurement

Channel

24-Bit Voltage

Measurement

Channel

Integrated Safety

Isolation

ADE9103

Yes

2

No

ADE9112

Yes

1

Yes

ADE9113

Yes

2

Yes

1 Protected by U.S. Patents 5,952,849; 6,873,065; 7,075,329; 6,262,600; 7,489,526; 7,558,080; 8,892,933; and 11,533,027. Other patents are pending.