component

ATT7022EU-N

Public Unreviewed

by Ray

HiTrend Tech Shanghai Energy Metering, LQFP-44(10x10). Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentdata acquisitionatt7022eu-n
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity

3D Model

Open in new tab ↗
Loads on click. Unloads when scrolled away or the tab is hidden.

Symbol & Footprint

Schematic Symbol

Open full view ↗
Loads on click. Unloads when scrolled away or the tab is hidden.

PCB Footprint

Open full view ↗
Loads on click. Unloads when scrolled away or the tab is hidden.

Datasheet

Open in new tab ↗
Loads on click. Unloads when scrolled away or the tab is hidden.
Download PDF
Contents

README

markdown

ATT7022EU-N

HiTrend Tech Shanghai · Energy Metering · LQFP-44(10x10)

ATT7022EU-N from HiTrend Tech Shanghai, in a LQFP-44(10x10). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 Reset input External reset input, active-low, Schmitt-trigger. Internal 47 kΩ pull-up.
2 IRQ output Interrupt output. After power-on reset IRQ goes low; goes high after calibration parameters are written. When an enabled interrupt event occurs IRQ is driven low; goes high again after the interrupt-flag register is read.
3 V1P input Channel 1 (current channel) positive analog input. Fully differential, max signal ±0.7 Vp. Channel 1 has a PGA (gain set via register). ESD protection on-die.
4 V1N input Channel 1 (current channel) negative analog input. Fully differential pair with V1P, max signal ±0.7 Vp. Channel 1 has a PGA (gain set via register).
5 REFCAP passive 1.2 V internal voltage reference bypass / external drive point. Decouple with 10 µF in parallel with 0.1 µF ceramic.
6 V3P input Channel 3 (current channel) positive analog input. Fully differential, max ±0.7 Vp. PGA present, gain set via register. ESD-protected.
7 V3N input Channel 3 (current channel) negative analog input. Pair with V3P, max ±0.7 Vp.
8 AGND power_in Analog ground reference for the ADCs and reference source. Tie to the PCB analog ground plane.
9 V5P input Channel 5 (current channel) positive analog input. Fully differential, max ±0.7 Vp. Has PGA with programmable gain.
10 V5N input Channel 5 (current channel) negative analog input. Pair with V5P, max ±0.7 Vp.
11 AGND power_in Analog ground reference for the ADCs and reference source.
12 AVCC power_in Analog supply. Nominal 3.3 V ±10%. Decouple with 10 µF and 0.1 µF ceramic close to the pin.
13 V2P input Channel 2 (voltage channel) positive analog input. Fully differential, max ±0.7 Vp. ESD-protected.
14 V2N input Channel 2 (voltage channel) negative analog input. Pair with V2P, max ±0.7 Vp.
15 AGND power_in Analog ground reference for the ADCs and reference source.
16 V4P input Channel 4 (voltage channel) positive analog input. Fully differential, max ±0.7 Vp. ESD-protected.
17 V4N input Channel 4 (voltage channel) negative analog input. Pair with V4P, max ±0.7 Vp.
18 AVCC power_in Analog supply (second pin). Nominal 3.3 V ±10%. Decouple with 10 µF and 0.1 µF ceramic.
19 V6P input Channel 6 (voltage channel) positive analog input. Fully differential, max ±0.7 Vp. ESD-protected.
20 V6N input Channel 6 (voltage channel) negative analog input. Pair with V6P, max ±0.7 Vp.
21 V0P input Channel 0 (voltage channel) positive analog input. Fully differential, max ±0.7 Vp. ESD-protected. Note: on ATT7026E/ATT7028E this pin is NC.
22 V0N input Channel 0 (voltage channel) negative analog input. Pair with V0P. NC on ATT7026E/ATT7028E.
23 GND power_in Digital ground.
24 TEST input Factory test pin. Must be tied to ground in the application.
25 NC unconnected No connect.
26 SEL input Three-phase three-wire (low) / three-phase four-wire (high) mode select, Schmitt-trigger. Internal pull-up (~300 kΩ) programmable, or floating.
27 CF1 output Frequency (high-going pulse) output for active-power calibration; can also be used for active-energy metering.
28 CF2 output Frequency (high-going pulse) output for reactive-power calibration; can also be used for reactive-energy metering.
29 NC unconnected No connect.
30 CF3 output Frequency (high-going pulse) output for apparent-power calibration; can also be used for apparent-energy metering. NC on ATT7028E.
31 CF4 output Frequency (high-going pulse) output for fundamental active-power calibration; can also be used for fundamental active-energy metering. NC on ATT7026E/ATT7028E.
32 SLEEP input Sleep-mode control, active high. Drive high to enter sleep mode (~1 µA); drive low for normal operation.
33 GND power_in Digital ground.
34 VCC power_in Digital supply. Nominal 3.3 V ±5%. Decouple with 10 µF in parallel with 100 nF ceramic.
35 CS input SPI chip-select from the host MCU, active-low, Schmitt-trigger. When CS is high, DOUT is high-impedance. Internal ~300 kΩ pull-up (programmable) or floating.
36 SCLK input SPI serial clock, driven by the host MCU. Schmitt-trigger input suitable for opto-isolated drive. Internal ~300 kΩ pull-up (programmable) or floating.
37 DIN input SPI serial data input from the host MCU. Data is latched on the falling edge of SCLK. Schmitt-trigger. Internal ~300 kΩ pull-up (programmable) or floating.
38 DOUT tri_state SPI serial data output. Data is presented on the rising edge and valid on the falling edge of SCLK. High-Z when CS is high.
39 VDD power_out 1.8 V internal digital LDO output. Decouple with a 10 µF tantalum in parallel with 100 nF ceramic; do not load externally beyond decoupling.
40 REVP output Logic output that goes high whenever any phase has negative power; returns low once all three phases are positive again.
41 VCC power_in Digital supply (second pin). Nominal 3.3 V ±5%. Decouple with 10 µF in parallel with 100 nF ceramic.
42 OSCI input System crystal input, or external clock input. Recommended crystal 5.5296 MHz. On-chip oscillator startup circuit with ~10 MΩ feedback resistor.
43 OSCO output System crystal output. Connects to the other crystal terminal.
44 GND power_in Digital ground.

Key specifications

Parameter Value
Manufacturer HiTrend Tech Shanghai
Package LQFP-44(10x10)
Category Data Acquisition
Pins 44

Ordering variants

Same part, different packaging or reel option.

  • ATT7022EU-N
  • ATT7026E
  • ATT7028E

CAD (KiCad official)

  • Symbol: ATT7022EU-N
  • Footprint: Package_QFP:LQFP-44_10x10mm_P0.8mm
  • 3D model: LQFP-44(10x10) (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: HiTrend Tech Shanghai datasheet (68 pp, sha256 cbbc53f2f4b7e6fc, retrieved 2026-08-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF