TDC1000: 300khz ultrasonic transducer not working

Manusinh Thakor

Part Number: TDC1000

Hello support, i'm going to develop one produce based TDC1000 . in which i'm using HT-300PLT/R10081(300 khz) .i have attached datasheet for same sensors.TDC1000 generating pulses but sensors are not responding at receiving.so i need support from your side .so i can use your ics easily for mass production. if any one client or you have experience on same sensors.please help meUltrasonicSensor HT-300PLT-R10081.pdf

over 6 years ago

0 Bharat Aravamudhan over 6 years ago

TI__Genius 11015 points

Manusinh,

Please send me the schematic of your setup. Also please confirm if the drive voltage of the transducer is >5V.

0 Bharat Aravamudhan over 6 years ago in reply to Bharat Aravamudhan

TI__Genius 11015 points

Manusinh,

Do you any updates on my questions? What is the schematic in Fig5 for ?

0 Manusinh Thakor over 6 years ago in reply to Bharat Aravamudhan

Intellectual 465 points

Hello Bharat Aravamudhan (1537635) ,sorry for late reply.sure i'm sharing schematic that i have followed for same

0 Bharat Aravamudhan over 6 years ago in reply to Manusinh Thakor

TI__Genius 11015 points

Manusinh,

Is the drive voltage of the transducer is use >3.3V. Please note that the TDC1000 can only drive transducers upto 3.3V anything greater than that will require a separate High Voltage drive circuit. Also make sure that the filter circuit between PGAOUT & COMPIN has a pass band of >300Khz.

Also TDC1000 can amplify the input received at Rx through an internal LNA & PGA I am not sure why you are amplyfying the signal using a separate amplifier LM772.

Also I see that you have grounded the CLKIN pin, this Clock is required for the device to sync its frequency with the resonant frequency of the transducer in use.

Please refer to the schematic of TDC1000-C2000 and refer the datasheet for more info on this device.

0 Manusinh Thakor over 6 years ago in reply to Bharat Aravamudhan

Intellectual 465 points

Thanks @Bharat Aravamudhan

For your valuable response .can you provide me High Voltage drive circuit. i mean to increase the amplitude of pulses to drive sensor.please provide information of components and schematic if possible so i can include in circuit.

Thanks a lot.