Changsha Purple Horn E-Commerce Co., Ltd.
| Measurement Range | 0ppm~3000ppm |
| Voltage - Supply | 5V~35V |
| Operating Temperature | -40℃~+125℃ |
| Interface | SPI |
| Description | 0ppm~3000ppm SPI SSOP-24 Gas Sensor RoHS |
| Mfr. Part # | MY9706 |
| Package | SSOP-24 |
| Model Number | MY9706 |
View Detail Information
Explore similar products
Precision RF connector cable HJ Tech HJ-1.13-SMA-IPEX1-135mm compatible with
Gold finished RF cable assembly HJ Tech HJ-IPEX1-SMA-RG1.32-138mm for stable
Digital particle concentration sensor Adafruit Industries 4505 for accurate air
HJ Tech HJ IPEX1 SMA RG1 13 65mm cable engineered for performance in process
Product Specification
| Measurement Range | 0ppm~3000ppm | Voltage - Supply | 5V~35V |
| Operating Temperature | -40℃~+125℃ | Interface | SPI |
| Description | 0ppm~3000ppm SPI SSOP-24 Gas Sensor RoHS | Mfr. Part # | MY9706 |
| Package | SSOP-24 | Model Number | MY9706 |
The MY9706 is a highly integrated NOx conditioning chip designed for diesel exhaust Selective Catalytic Reduction (SCR) systems and onboard diagnostics in gasoline and diesel engines. It measures nitrogen oxide (NO and NO2) concentrations and nitrogen concentration in diesel exhaust. Key advantages include minimal external components, 14-bit resolution, short stabilization time, high reliability, and robust ESD protection (HBM 7000V, CDM 2000V). Utilizing advanced CMOS mixed-signal technology, it handles measurement drive, sensor electrode voltage/current, and temperature signal amplification, analog-to-digital conversion, and digital compensation, communicating with the vehicle MCU via SPI bus.
| Parameter | Symbol | Condition | Min | Typical | Max | Unit |
| General | ||||||
| Working Environment Temperature | -40 | 125 | ||||
| NOx Concentration Range | 0 | 3000 | ppm | |||
| NOx Concentration Resolution | 14bit ADC output | 0.1 | ppm | |||
| Working Voltage | VDD | 5 | 35 | V | ||
| Average Current | IDD | 16.2 | mA | |||
| ESD Protection | HBM | 7 | kV | |||
| ESD Protection | CDM | 2 | kV | |||
| Transmission Protocol | SPI | |||||
| Measurement Accuracy | ||||||
| NOX Concentration Range | 0~100ppm | 10 | ppm | |||
| NOX Concentration Range | 101~500ppm | 10% | ||||
| NOX Concentration Range | 501~3000ppm | 20% | ||||
| O2 Concentration Range | -12%~5% | 0.2% | ||||
| Electrical Characteristics (T=25, VDD=5V) | ||||||
| Supply Voltage | VDD | 4.5 | 5 | 5.5 | V | |
| Main Pump Electrode Output Current | IP0 | Air condition | 3.2 | mA | ||
| Auxiliary Pump Electrode Output Current | IP1 | Air condition | 7 | uA | ||
| Measurement Pump Electrode Output Current | IP2 | 20 | 1000 | nA | ||
| Input Logic High | VIH (MOSI, CS, SCLK) | 0.7*VDD | V | |||
| Input Logic Low | VIL (MOSI, CS, SCLK) | 0.3*VDD | V | |||
| Output High Voltage | VOH | VDD-0.4 | V | |||
| Output Low Voltage | VOL | 0.4 | V | |||
| Input Leakage Current | IIN | -1 | 1 | uA | ||
| System Clock Frequency | FCLK | 2 | MHz | |||
| SPI Communication | ||||||
| SPI Clock Frequency | fck | 50% duty cycle | 0.05 | 1 | 4 | MHz |
| SCLK High Level Time | tckh | 500 | ns | |||
| SCLK Low Level Time | tckl | 500 | ns | |||
| SCS Setup Time | tsuscs | SCS falling edge to SCLK rising edge | 100 | ns | ||
| MOSI Data Setup Time | tsd | 100 | ns | |||
| MOSI Data Hold Time | thd | 100 | ns | |||
| SCS Hold Time | thscs | After SCLK falling edge | 150 | ns | ||
| SCS Pulse Width (between bytes) | tpwscs | 2.5 | us | |||
| MISO Data Valid Time | tvd | From SCLK rising edge | 100 | ns | ||
| Absolute Maximum Ratings | ||||||
| Supply Voltage | VDD1/VDD2 | -0.3 | 6 | V | ||
| Voltage on HRV1/HRV2/HREF/HBC Pins | -0.3 | 36 | V | |||
| Operating Temperature Range | -40 | 125 | ||||
Model: MY9706
Package: SSOP24
Dimensions: 8.5*8.2*1.85mm
| Pin No. | Pin Name | I/O | Description |
| 1 | HRV3 | Analog | Heater terminal ground |
| 2 | HRV1 | Analog | Heater input voltage 1 for resistance measurement |
| 3 | HRV2 | Analog | Heater input voltage 2 for resistance measurement |
| 4 | HREF | Analog | Heater input voltage for shunt resistor measurement |
| 5 | REXT1 | Analog | External resistor for main pump current configuration |
| 6 | GND1 | Power | Analog ground |
| 7 | ICM | Analog | Common electrode for pump currents IP0, IP1, IP2 |
| 8 | REXT3 | Analog | External resistor for reference electrode current configuration |
| 9 | REF | Analog | External environment reference electrode |
| 10 | IP2 | Analog | Measurement pump electrode, provides current IP2 |
| 11 | IP1 | Analog | Auxiliary pump electrode, provides current IP1 |
| 12 | IP0 | Analog | Main pump electrode, provides current IP0 |
| 13 | HBC | Analog | Switch for controlling high-current heating bias |
| 14 | VDD1 | Power | Analog 5V power supply |
| 15 | REXT2 | Analog | External resistor for auxiliary and measurement pump current configuration |
| 16 | SCS | SPI | Chip enable, active low, internal pull-up |
| 17 | MISO | SPI | Slave data output, high impedance when no data output |
| 18 | MOSI | SPI | Master data input, internal pull-down |
| 19 | SCLK | SPI | Clock input, internal pull-down |
| 20 | PWM | Input | Heater terminal PWM control input |
| 21 | CLK | Input | Chip system clock input |
| 22 | VDD2 | Power | Digital 5V power supply |
| 23 | GND2 | Power | Digital ground |
| 24 | HVDD | Analog | Power switch for heater terminal shunt resistor control |
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Agent,Importer
Year Established:
2009
Employee Number:
300~500
Ecer Certification：
Verified Supplier
Changsha Purple Horn E-Commerce Co., Ltd.. is a professional company focus on integrated circuit ic business. Purple Horn will also responsible with exporting and logistic business. there is professional factory Beijing Silk Road which focus on desigining and manufacture. Founded in 2009, Our compa... Changsha Purple Horn E-Commerce Co., Ltd.. is a professional company focus on integrated circuit ic business. Purple Horn will also responsible with exporting and logistic business. there is professional factory Beijing Silk Road which focus on desigining and manufacture. Founded in 2009, Our compa...
Get in touch with us
Leave a Message, we will call you back quickly!