ADE7953
Single Phase Energy Metering ICThe ADE7953 is a single phase energy metering ic from Analog Devices. View the full ADE7953 datasheet below including key specifications, absolute maximum ratings.
Official ADE7953 datasheet (PDF) — the source this page was extracted from.
ADE7953 Key Specifications
| Parameter | Value |
|---|---|
| PGA Gain | up to x22 |
| Bandwidth | 1.23 kHz |
| ADC Channels | 3 sigma-delta ADCs |
| Supply Voltage | 3.3V |
| Package Dimensions | 5mm x 5mm x 0.75mm |
| IRMS Measurement Error | <0.2% over 1000:1 dynamic range |
| Communication Interfaces | SPI, I2C, UART |
| Energy Measurement Error | <0.1% over 3000:1 dynamic range |
| Operating Temperature Range | -40°C to +85°C |
ADE7953 Overview
Part: ADE7953ACPZ — Analog Devices
Type: Single-Phase Multifunction Energy Metering IC with Neutral Current Measurement
Description: Single-phase energy metering IC with three Σ-Δ ADCs, 3.3 V supply, <0.1% active/reactive energy error over a 3000:1 dynamic range, 1.23 kHz bandwidth, and SPI, I²C, or UART interfaces.
Operating Conditions:
- Supply voltage: 3.3 V ± 10% (VDD)
- Operating temperature: -40 to +85 °C
- Reference clock (CLKIN): 3.58 MHz typical (3.54–3.62 MHz)
Absolute Maximum Ratings:
- Max supply voltage: -0.3 V to +3.7 V (VDD to AGND/DGND)
- Analog input voltage (IAP, IAN, IBP, IBN, VP, VN to AGND): -2 V to +2 V
- Digital input/output voltage to DGND: -0.3 V to VDD + 0.3 V
- Storage temperature: -65 to +150 °C
Key Specs:
- Active energy error (Channel A): 0.1% typ over 3000:1 dynamic range (PGA = 1 to 22, integrator off)
- Active energy error (Channel B): 0.1% typ over 1000:1 dynamic range (PGA = 1 to 16, integrator off)
- IRMS error (Channel A): 0.2% typ over 1000:1 dynamic range
- IRMS (Channel B) and VRMS error: 0.2% typ over 500:1 dynamic range
- Measurement bandwidth: 1.23 kHz (-3 dB)
- Maximum analog input: ±500 mV peak differential (IAP–IAN, IBP–IBN); ±250 mV peak single-ended on IAP–IAN
- Input impedance: IAP/IAN ≥ 50 MΩ; IBP, IBN, VP, VN ≥ 540 kΩ
- SNR: 74 dB (Ch. A), 72 dB (Ch. B), 70 dB (voltage)
- Phase error between channels: ±0.05° max (45–65 Hz, HPF on)
- CF1/CF2 maximum output frequency: 206.9 kHz
Features:
- Supports EN 50470-1, EN 50470-3, IEC 62053-21, IEC 62053-22, and IEC 62053-23
- Measures active, reactive, and apparent energy, sampled waveform, and current and voltage rms
- Second current input for neutral current measurement and tamper detection
- Flexible PGA gain stage (up to ×22)
- Internal integrators for Rogowski coil sensors
- Two configurable low-jitter pulse outputs (CF1, CF2)
- Power quality detection: overcurrent, overvoltage, peak, and sag via IRQ pin
- No-load detection for active, reactive, and apparent energy
- Reverse power (REVP), zero-crossing voltage (ZX), and zero-crossing current (ZX_I) pins
- SPI, I²C, or UART communication
Applications:
- Single-phase electricity metering
- Neutral current billing and tamper detection
Package:
- 28-lead LFCSP (CP-28-10)
ADE7953 Features
Highly accurate; supports EN 50470-1, EN 50470-3, IEC 6205321, IEC 62053-21, IEC 62053-22, and IEC 62053-23 standards Measures active, reactive, and apparent energy; sampled waveform; current and voltage rms Provides a second current input for neutral current measurement Less than 0.1% error in active and reactive energy measurements over a dynamic range of 3000:1 Less than 0.2% error in instantaneous IRMS measurement over a dynamic range of 1000:1 Provides apparent energy measurement and instantaneous power readings 1.23 kHz bandwidth operation Flexible PGA gain stage (up to ×22) Includes internal integrators for use with Rogowski coil sensors SPI, I 2 C, or UART communication
ADE7953 Pin Configuration
Figure 4. Pin Configuration
Table 5. Pin Function Descriptions
| Pin No. | Mnemonic | Description |
|---|---|---|
| 1 | ZX | Voltage Channel Zero-Crossing Output Pin.See the Voltage Channel Zero Crossing section. This pin can be configured to output a range of alternative power quality signals (see the Alternative Output Functions section). |
| 2 | RESET | Active Low Reset Input. To initiate ahardware reset, thispin must be brought low for at minimum of 10 μs. |
| 3 | VINTD | This pin provides access to the 2.5 V digital LDO.This pin should be decoupled with a 4.7 μF capacitor in parallel with a 100 nF ceramic capacitor. |
| 4 | DGND | Ground Reference for the Digital Circuitry. |
| 5,6 | IAP , IAN | Analog Input for Current Channel A (Phase Current Channel). This differential voltage input hasamaximum input range of ±500 mV. The maximum pin voltage for single-ended use is ±250 mV.The PGA associated with this input has a maximum gain stage of 22 (see the Analog Inputs section). |
| 7,8 | PULL_HIGH | These pins should be connectedtoVDD for proper operation. |
| 9,10 | IBP , IBN | Analog Input for Current Channel B (Neutral Current Channel). This differential voltage input hasamaximum input range of ±500 mV. The PGA associated with this input has a maximum gain of 16 (see the Analog Inputs section). |
| 11,12 | VN, VP | Analog Input for Voltage Channel. This differential voltage input hasamaximuminput range of±500 mV.The PGA associated with this input has a maximum gain of 16 (see the Analog Inputs section). |
| 13 | REF | This pin provides access to the on-chip voltage reference.The internal reference hasanominal voltage of 1.2 V. This pin should be decoupled with a 4.7 μF capacitor in parallel with a 100 nFceramic capacitor. Alternatively,an external reference voltage of 1.2 Vcan be applied to this pin (see the Reference Circuit section). |
| 14 | PULL_LOW | This pin should be connectedtoAGND for proper operation. |
| 15 | VINTA | This pin provides access to the 2.5 V analog LDO. This pin should be decoupledwith a4.7 μF capacitor in parallel with a 100 nF ceramic capacitor. |
| 16 | AGND | Ground Reference for the Analog Circuitry. |
| 17 | VDD | Power Supply (3.3 V) for the ADE7953.For specified operation, the input to thispin should be within 3.3V± 10%.Thispin should be decoupledwith a 10 μFcapacitor in parallel witha100 nFceramic capacitor. |
| 18 | CLKIN | Master Clock Input for the ADE7953.Anexternal clockcanbe provided at this input. Alternatively, aparallel resonant AT crystal can be connected across the CLKIN and CLKOUT pins to provide aclock source for the ADE7953.The clock frequency for specified operation is 3.58 MHz. Ceramic load capacitors of a few tens of picofarads should be used with the gate oscillator circuit. Refer to the crystal manufacturer's data sheet for the load capacitance requirements. |
| 19 | CLKOUT | A crystal can be connectedacross thispin and CLKIN to provide a clock source for the ADE7953. |
| Pin No. | Mnemonic | Description |
|---|---|---|
| 20 | REVP | Reverse Power Output Indicator. See the Reverse Power section. This pin can be configured to output a range of alternative power quality signals (see the Alternative Output Functionssection). |
| 21 | ZX_I | Current Channel Zero-Crossing Output Pin. See the Current Channel Zero Crossing section. This pin can be configured to output a range of alternative power quality signals (see the Alternative Output Functions section). |
| 22 | IRQ | Interrupt Output.See the ADE7953 Interrupts section. |
| 23 | CF1 | Calibration FrequencyOutput 1. |
| 24 | CF2 | Calibration FrequencyOutput 2. |
| 25 | SCLK | Serial Clock Input for the Serial Peripheral Interface. All serial communications are synchronized to the clock (see the SPI Interface section). If using the I 2 Cinterface, this pin must be pulled high. If using the UART interface, thispin must be pulled to ground. |
| 26 | MISO/SDA/Tx | Data Output for SPI Interface/Bidirectional DataLine for I 2 C Interface/Transmit Line for UART Interface. |
| 27 | MOSI/SCL/Rx | Data Input for SPI Interface/Serial Clock Input for I 2 CInterface/Receive Line for UARTInterface. |
| 28 | CS EPAD | Chip Select for SPI Interface. This pin must be pulled high if using the I 2 Cor UART interface. Exposed Pad. Create a similar pad onthe PCB under the exposed pad. Solder the exposed pad to the pad on the PCB to confer mechanical strength to the package. Connect the pad toAGND and DGND. |
ADE7953 Absolute Maximum Ratings
TA = 25°C, unless otherwise noted.
Table 4.
| Parameter | Rating |
|---|---|
| VDD toAGND | -0.3 Vto+3.7 V |
| VDD toDGND | -0.3 Vto+3.7 V |
| Analog Input Voltage toAGND, IAP , IAN, IBP , IBN, VP, VN | -2 Vto+2 V |
| Reference Input Voltage toAGND | -0.3 VtoVDD + 0.3 V |
| Digital Input Voltage toDGND | -0.3 VtoVDD + 0.3 V |
| Digital Output Voltage toDGND | -0.3 VtoVDD + 0.3 V |
| Operating Temperature Industrial Range | -40°C to +85°C |
| Storage Temperature Range | -65°C to +150°C |
Note that regarding the temperature profile used in soldering RoHS-compliant parts, Analog Devices, Inc., advises that reflow profiles should conform to J-STD 20 from JEDEC. Refer to the JEDEC website for the latest revision.
Stresses at or above those listed under Absolute Maximum Ratings may cause permanent damage to the product. This is a stress rating only; functional operation of the product at these or any other conditions above those indicated in the operational section of this specification is not implied. Operation beyond the maximum operating conditions for extended periods may affect product reliability.
Variants on the same datasheet
These parts have exact links to the same datasheet. They are candidates to compare, not verified drop-in replacements; check package, pinout and electrical limits.
| Part Number | Manufacturer | Package |
|---|---|---|
| ADE795351 | Analog Devices | LFCSP-28 5x5mm |
| ADE7953ACPZ | Analog Devices | LFCSP-28 5x5mm |
| ADE7953ACPZ-RL | Analog Devices | LFCSP-28 5x5mm |
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