TDC-GP2 acam messelectronic gmbh, TDC-GP2 Datasheet - Page 32

• Manufacturer Part Number: TDC-GP2
• Description: Precision Time Interval Measurement
• Manufacturer: acam messelectronic gmbh

6. Applications
6.1 Ultrasonic Heatmeter
6.1.1 General Description
The TDC-GP2 is perfectly suited for low-cost ultrasonic heatmeter designs. Thanks to the implemented functionality,
including precision temperature measurement, fire pulse generation, windowing and clock calibration it is sufficient to
add a simple microprocessor (without A/D converter) and a transducer dependant driver and receiver. The extremely
low current consumption guarantees the necessary long battery lifetime in such applications.
The measurement is fairly automated by the TDC-GP2. The microprocessor just sends a start command. The TDC then
fires the transducers and measures the time of flight. It calibrates the results and provides them to the
microprocessor.
acam-messelectronic gmbh - Am Hasenbiel 27 - D-76297 Stutensee-Blankenloch - Germany - www.acam.de
T
PT500
PT1000
cold
cold
hot
T
PT500
PT1000
hot
supply
Power
100nF
74HC1G14
Figure 19
32
SenseT
LoadT
PT4
PT3
PT2
PT1
Fire1
Fire2
EN_Start
Start
EN_Stop1
Stop1
PortB1
PortB2
LCD-Display
TDC-GP2
µP
EN_Stop2
Clk32Out
Clk32In
Fire_In
ClkOut
Stop2
XOUT
6.1 Ul trasoni c He atm e te r
XIN
32.768kHz
220R
TDC-GP2
2x10pF
560K
4MHz