Signal Chain
ADC      >>>>>>      Electric energy metering      >>>>>>      High precision time measurement      >>>>>>     Leakage protection

1.ADC:

Siproin Microelectronics provides high-precision analog-to-digital conversion circuits for power monitoring and smart meters.
1.1 Σ-Δ ADC

NO	Model	Channel	SPS	Bit	Work	Vcc	Input（V）	Interface	Package	P2P	Input Model
1	SSP1120	4	2k	16	2.6mW	2.3~5.5	±Vref/PGA	SPI	TSSOP16	ADS1120	Single-ended/Differential
2	SSP1220	4	2k	24	2.6mW	2.3~5.5	±Vref/PGA	SPI	TSSOP16	ADS1220	Single-ended/Differential

1.2 SAR ADC

Application:

• Smart hmeter,intelligent water meter, intelligent gas meter,intelligent heat meter
• Power monitoring 

2.Electric energy metering:      >>>>>>TOP

Series high precision electric power measurement integrated circuit, integrated Sigma-Delta ADC, digital signal processing and other analog circuit modules, according to different models can process active power, current and voltage effective value, can provide pulse output or SPI/UART interface.

No	Model	Operating voltage	Power Consumption	ADC channel	Feature	Output model	Package	Clock	Dynamic Range
1	SSP1855	5V	15mW	2	Single phase high precision electricity meter	Pulse	SSOP24	3.5795MHz	500:1 0.1%
2	SSP1852	5V	30mW	6	Three - phase high - precision electricity meter	Pulse	SOP24	10MHz	500:1 0.1%
3	SSP1837	3.3V	6mW	6	Single - phase multi - function smart socket	2 Pulse	SOP8	Build-in Clock	2500:1 1%
4	SSP1839	3.3V	10mW	6	Calibration - free single - phase meter	Uart/Spi	SSOP20/SOP16	Bulid-in Clock	2500:1 1%
5	SSP1840	3.3V	8mW	6	Calibration - free single - phase meter	Uart/Spi	TSSOP14	Build-in Clock	2500:1 1%
6	SSP1842	3.3V	8mW	6	Calibration - free single - phase meter	Uart/Spi	SSOP10	Build-in Clock	2500:1 1%

Application:

• Electric meter
• Industrial meter
• Intelligent power management
• Intelligent electrical outlet
• Charging pile

3.High precision time measurement (TDC) circuit:      >>>>>>TOP

High precision time measurement (TDC) circuit integrates high-speed pulse generator, temperature test and clock control, analog comparator, analog switch, Schmidt trigger and other devices.The first wave detection function greatly improves the anti-interference ability and abnormal detection ability, and the programmable offset of the internal comparator can improve the sampling accuracy.Its powerful measurement and calibration capabilities and simple command system make it especially suitable for ultrasonic flow measurement and heat measurement.

No	Model	Operating voltage	Quiescent current	Time accuracy	Feature	Package
1	SSP1922	2.5V-3.6V	<1.5uA	15ps	High precision time measurement (TDC) circuit	QFN32/LQFP32
2	SSP1930	2.5V-3.6V	<1.5uA	15ps	High precision time measurement (TDC) circuit	QFN32/LQFP32

Application：

• Ultrasonic water meter
• ultrasonic measurement

4.Leakage protection:              >>>>>>TOP

Leakage protection device is A high-performance leakage protection application-specific integrated circuit.  It contains a regulated power supply, an amplifier circuit, a comparison circuit, an intelligent delay circuit, a self-recovery control circuit, a latching controller and a SCR drive circuit.  There are unhooked coil, varistor, regulator diode, diode, resistor, capacitor and other components.

No.	Model	Feature	Turn on voltage or current	Operating voltage	Output current	Delay times	Output times
1	SSP54123	Type AC special circuit for leakage protection	6.1mV	12V	250uA		5ms
2	SSP54123A	Type A special circuit for leakage protection	5mV rms	4.8v	2mA	>10-100ms	28ms