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ATM90E26-YU-R on a board, in 3D

ATM90E26-YU-R

Microchip Technology

-40℃~+85℃ 0.1% 1 15ppm/℃ 2.8V~3.6V 5000:1 8.192MHz Pulse output、Interrupt control、Anti-tamper detection、Digital calibration and compensation、Programmable gain、Built-in reference source、Energy accumulation engine SPI、UART Single-Phase Energy Metering IC SSOP-28-208mil Energy Metering ROHS

Extended
DatasheetJLCPCBLCSCmicrochip/ATM90E26-YU-R
Category
Energy Metering
Package
SSOP-28-208mil
Pins
28

Overview

The ATM90E26-YU-R is an energy Metering made by Microchip Technology in a SSOP-28-208mil package with 28 pins. -40℃~+85℃ 0.1% 1 15ppm/℃ 2.8V~3.6V 5000:1 8.192MHz Pulse output、Interrupt control、Anti-tamper detection、Digital calibration and compensation、Programmable gain、Built-in reference source、Energy accumulation engine SPI、UART Single-Phase Energy Metering IC SSOP-28-208mil Energy Metering ROHS.

PCBKit's library has its KiCad symbol (Sensor_Energy:ATM90E26-YU, from KiCad's library) and its footprint (Package_SO:SSOP-28_5.3x10.2mm_P0.65mm, from KiCad's library), ready for a KiCad board. 728 are in stock at JLCPCB (part C616398). 5 open-source boards in 5 repositories on GitHub use it.

Symbol

MMD11DGND2DVDD3Reset4AVDD5AGND6I2P7I2N8I1P10I1N11USEL12Vref13VN15VP16WarnOut17CF118CF219IRQ20ZX21OSCI22OSCO23CS24SCLK25SDO/UTX26SDI/URX27MMD028
Sensor_Energy:ATM90E26-YUFrom KiCad's library

Footprint

12345678910111213141516171819202122232425262728
Package_SO:SSOP-28_5.3x10.2mm_P0.65mmFrom KiCad's library

From the datasheet

9
Supply, least
2.8 V · AVDD, recommended operating min · p. 52
Supply, most
3.6 V · AVDD, recommended operating max · p. 52
Supply, absolute maximum
3.7 V · AVDD relative to AGND, absolute max · p. 56
Works from
-40 °C · Operating temperature min · p. 56
Works up to
85 °C · Operating temperature max · p. 56
Junction, hottest
150 °C · Junction temperature max · p. 56
Takes working
5.8 mA · sum of AVDD and DVDD typical currents, VDD=3.3V, T=25°C, Vref capacitor 1uF · p. 52
Junction to air (Green SSOP28)
49 K/W · Junction to ambient, no airflow · p. 56
Data rate, most
160 kbit/s · SPI interface bit rate max · p. 51

What it is and has

10
Device
Single-Phase High-Performance Wide-Span Energy Metering IC · p. 1
Active energy accuracy
0.1% over a dynamic range of 5000:1 · p. 1
Reactive energy accuracy
0.2% over a dynamic range of 5000:1 · p. 1
Interfaces
Selectable UART or SPI; four-wire or three-wire SPI · p. 1
L line current gain
1, 4, 8, 16, 24 · p. 1
N line current gain
1, 2, 4 · p. 1
Crystal oscillator frequency
8.192 MHz · p. 1
Power-on reset
Built-in hysteresis · p. 1
Voltage monitoring
Programmable voltage sag detection and zero-crossing output · p. 1
Startup and no-load thresholds
Programmable · p. 1

Around it

6
cap 0.1μF
between Reset and GND; Reset filter capacitor. · p. 8
cap 10μF
between DVDD and DGND; Electrolytic decoupling capacitor. · p. 8
cap 0.1μF
between DVDD and DGND; Digital supply decoupling capacitor. · p. 8
cap 0.1μF
between AVDD and AGND; Analog supply decoupling capacitor. · p. 8
cap 1μF
between Vref and AGND; Reference voltage decoupling capacitor. · p. 8
cap 1nF
between Vref and AGND; Reference voltage decoupling capacitor. · p. 8

Specifications

40
ParameterConditionsAs printedPage
Sampling Frequencytyp 8 kHz51
Harmonic Metering (active and reactive) Bandwidth1% total energy metering error limit; V-harmonic <= 10% of fundamental; I-harmonic<=40% of fundamentaltyp 1.1 kHz51
L Line Current Channel Input Impedancesingle-ended impedancetyp 1 kΩ51
N Line Current Channel Input Impedancesingle-ended impedancetyp 400 kΩ51
Voltage Channel Input Impedancesingle-ended impedancetyp 400 kΩ51
L Line Current Channel DC OffsetPGA gain is ‘24’max 10 mV51
N Line Current Channel DC Offsetmax 10 mV51
Voltage Channel DC Offsetmax 10 mV51
On-Chip Referencetyp 1.26 V51
Crystal or External ClockThe Accuracy of crystal or external clock is ±100 ppmtyp 8.192 MHz51
SPI Interface Bit Ratemin 200 bps51
CFx Pulse WidthIf T ≥ 160 ms, width=80ms; if T<160 ms, width = 0.5T. Refer to Section 6.6typ 80 ms52
Charged Device Model (CDM)JESD22-C101min 500 V52
Human Body Model (HBM)JESD22-A114min 2000 V52
Latch UpJESD78Amax 4.95 V52
AVDD, Analog Power SupplyMetering precision guaranteed within 3.0V~3.6V.min 2.8 · typ 3.3 · max 3.6 V52
DVDD, Digital Power SupplyMetering precision guaranteed within 3.0V~3.6V.min 2.8 · typ 3.3 · max 3.6 V52
IAVDD, Analog CurrentVDD=3.3V, T=25°C, Vref decoupling capacitor is 1uF.typ 3.4 mA52
IDVDD, Digital CurrentVDD=3.3V, T=25°C, Vref decoupling capacitor is 1uF.typ 2.4 mA52
Digital Input High Level (pin 1, 4, 24, 25, 27 and 28)VDD=3.3V±10%min 2 · max 5.5 V52
Digital Input High Level (pin 9, 12 and 22)VDD=3.3V±10%min 2 V52
Digital Input Low LevelVDD=3.3V±10%max 0.8 V52
Digital Output Low LevelVDD=3.3V, IOL=10mAmax 0.4 V52
Digital Output High LevelVDD=3.3V, IOH=-10mAmin 2.4 V52
Digital Output Low Level (OSCO)VDD=3.3V, IOL=1mAmax 0.4 V52
Digital Output High Level (OSCO)VDD=3.3V, IOH=-1mAmin 2.4 V52
Power On Trigger Voltage VHmin 2.375 · typ 2.5 · max 2.625 V54
Power Off Trigger Voltage VLmin 2.185 · typ 2.3 · max 2.415 V54
Hysteretic Voltage Difference VH-VLtyp 0.2 V54
Delay Time After Power On T1min 5 ms54
Delay Time After Power Off T2min 10 us54
High Level Width TZXtyp 5 ms55
Delay Time TDmax 0.5 ms55
Relative Voltage Between AVDD and AGNDmin -0.3 · max 3.7 V56
Relative Voltage Between DVDD and DGNDmin -0.3 · max 3.7 V56
Analog Input Voltage (I1P, I1N, I2P, I2N, VP, VN)min -1 V56
Digital Input Voltagemin -0.3 V56
Operating Temperature Rangemin -40 · max 85 °C56
Maximum Junction Temperaturemax 150 °C56
Thermal Resistance θJA θJAGreen SSOP28; No Airflowtyp 49 °C/W56

Pins, by the datasheet

16
2 DGND
Digital ground. · p. 8
3 DVDD
Digital power supply; decouple with a 10uF electrolytic capacitor and a 0.1uF capacitor. · p. 8
4 Reset
Active-low reset; connect to ground through a 0.1uF filter capacitor or directly to an MCU output. · p. 8
5 AVDD
Analog power supply; decouple with a 0.1uF capacitor. · p. 8
6 AGND
Analog ground. · p. 8
7 I2P
Positive differential input for N line current; 120uVrms~600mVrms at gain 1. · p. 8
8 I2N
Negative differential input for N line current; 120uVrms~600mVrms at gain 1. · p. 8
10 I1P
Positive differential input for L line current; 5uVrms~25mVrms at gain 24. · p. 8
11 I1N
Negative differential input for L line current; 5uVrms~25mVrms at gain 24. · p. 8
12 USEL
UART/SPI selection: high selects UART, low selects SPI; must not change after reset. · p. 8
13 Vref
Reference voltage output; decouple with a 1uF capacitor and a 1nF capacitor. · p. 8
14 AGND
Analog ground. · p. 8
15 VN
Negative differential voltage input; input range 120uVrms~600mVrms. · p. 8
16 VP
Positive differential voltage input; input range 120uVrms~600mVrms. · p. 8
24 CS
Active-low SPI chip select; hold low in three-wire SPI mode and connect to VDD in UART mode. · p. 8
25 SCLK
SPI clock; SDI is sampled on rising edges and SDO shifts on falling edges; connect to ground in UART mode. · p. 8

Parameters

15
Clock Frequency
8.192MHz
Current - Supply
5.8mA
Data Rate
160kbps
Dynamic Range
5000:1
Features
Energy accumulation engine
Interface
SPI
Junction Temperature(Max)
150℃
Meter Type
Single-Phase Energy Metering IC
Number of Channels
1
Operating Temperature
-40℃~+85℃
Thermal Resistance(Junction to Ambient)
49℃/W
Tolerance
0.1%
Voltage - Supply
2.8V~3.6V
Voltage - Supply(Absolute Max)
3.7V
Voltage Reference Drift
15ppm/℃

Order codes

2

Pinout

28
The pins of the ATM90E26-YU-R
PinNameType
1MMD1Input
2DGNDPower in
3DVDDPower in
4ResetInput
5AVDDPower in
6AGNDPower in
7I2PInput
8I2NInput
9DGNDPassive
10I1PInput
11I1NInput
12USELInput
13VrefOutput
14AGNDPassive
15VNInput
16VPInput
17WarnOutOutput
18CF1Output
19CF2Output
20IRQOutput
21ZXOutput
22OSCIInput
23OSCOOutput
24CSInput
25SCLKInput
26SDO/UTXOutput
27SDI/URXInput
28MMD0Input

Open-source boards using it

All 5
  • 2 layers102 × 103 mmOhmsprint, the printed circuit board in 3D

    Ohmsprint

    Jockkoo/Ohmsprint-2026-4Digitalca

    Ohmsprint hackaton 2026. KiCad

    123 parts1
  • 2 layers114.9 × 68.5 mmOhmPrvaFaza, the printed circuit board in 3D

    OhmPrvaFaza

    apantelic/ohmsprint_kicad

    Energy measurement system designed in KiCad, including schematic, BOM, and 2-layer PCB layout

    50 parts
  • 2 layersADS, the printed circuit board in 3D

    ADS

    eemestre/bbb-data-repo

    Repo made to easily get data from a bbb

    35 parts
  • 2 layers84.4 × 68.9 mmOhmSprint V1, the printed circuit board in 3D

    OhmSprint V1

    Ignjat02/Energy-meter-PCB

    A single-phase energy meter designed and built for the OhmSprint competition (Belgrade, April–May 2026). The board handles AC current sensing, energy measurement, microcontroller processing, and Bluetooth data output —…

    70 parts
  • 2 layers99.4 × 54.2 mmOhmSprint C V measurement PCB, the printed circuit board in 3D

    OhmSprint C V measurement PCB

    pakiboj/OhmSprint-C-V-measurement-PCB

    Za potrebe projekta izabran je ESP32-C2 mikrokontroler a merenje struje i napona radjeno je preko ATM90E26 mernog cipa. Slanje podataka uradjeno je pomocu WROOM-C2 cipa ugradjenog sa ESP kontrolerom.

    88 parts

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Questions

Is there a KiCad symbol and footprint for the ATM90E26-YU-R?

Yes. The symbol is Sensor_Energy:ATM90E26-YU and the footprint Package_SO:SSOP-28_5.3x10.2mm_P0.65mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the ATM90E26-YU-R?

SSOP-28-208mil, with 28 pins. Its footprint is drawn on this page.

Where is the ATM90E26-YU-R datasheet?

Microchip Technology publishes it: the Datasheet link on this page opens it.

Where can I order the ATM90E26-YU-R?

JLCPCB lists it as part C616398, with 728 in stock; the sellers' links on this page open their listings.

What can replace the ATM90E26-YU-R?

Parts like it in the library: the ATM90E26-YU-B by Microchip Technology, the RN7302 by RENERGY, the RN7302(V3) by RENERGY and the RN8302B by RENERGY. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the ATM90E26-YU-R?

5 boards in 5 repositories on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

7