Data Sheet
ADE9103/ADE9112/ADE9113
Isolated, Sigma-Delta ADCs with SPI
FEATURES
GENERAL DESCRIPTION
► 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
The ADE9103/ADE9112/ADE9113are 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 best 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.
► 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
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.
► 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
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.
► IEC 60747-17 certificate of conformity expected
► 5000 V RMS for 1 minute per UL 1577 expected
► IEC 61010-1 and IEC 62368-1 expected
APPLICATIONS
Table 1. ADE9103/ADE9112/ADE9113 Product Comparison
24-Bit Current
Measurement
Channel
24-Bit Voltage
Measurement
Channel
► Shunt-based polyphase meters
► Electric vehicle supply equipment
► DC meters
► Power quality monitoring
► Solar inverters
Integrated Safety
Isolation
Model
ADE9103
ADE9112
ADE9113
Yes
Yes
Yes
2
1
2
No
Yes
Yes
► Process monitoring
► Protective devices
► Isolated sensor interfaces
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.
Rev. 0
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.
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