tdc-gp22

TDC-GP22

Ultrasonic Flow Converter with Integrated Analog Frontend

TDC-GP22 is an integrated ultrasonic flow converter front end.

It is a 100% pin and functionally compatible upgrade to TDC-GP21. It has additional functionality compared to the TDC-GP21 - the first hit detection and the patented signal strength monitoring by pulse width measurement. This makes it the first complete and easy to use front-end chip for ultrasonic water meters and heat meters.

The TDC-GP22 has analog elements like the fire-pulse generator, zero-crossing detection and analog switches that simplify the design of ultrasonic flow meters. The first-hit detection makes TDC-GP22 suitable for high dynamic range ultrasonic water meters. The optimized power management of the various subsystems allows the operating current to be only a few µA at 2 Hz measurement rate.

The TDC-GP22 is a good front-end solution for designing compact, low-cost ultrasonic flow meters and heat meters.

For even higher integration and lower current consumption, please see the TDC-GP30.

KEY FEATURES

  • 2-channel TDC with 22ps resolution
  • Analog frontend for ultrasonic flow meters
  • Chopper-stabilized low-offset comparator for zero crossing detection
  • Precise windowing for hit selection
  • Temperature measuring unit for PT1000 sensors
  • QFN32 Package

KEY BENEFITS

  • High Precision
  • Low Power
  • Few Additional External Component Needed

TDC-GP30 PRODUCT FACTS

Analog FrontendYes
First Wave DetectionYes
Amplitude Measurement
Number of Hits3
Resolution [ps]22
Operating Supply Range2.5 to 3.6
InterfaceSPI
CPU-
Memory
GPIO-
Ambient Temperature Range [°C]    -40°C to +125°C
PackageQFN32



DescriptionVersionSizeDownload
Datasheet TDC-GP30 Vol. 1:
System-Integrated Solution for Ultrasonic Flow Meters General Data and Frontend Description
V0.11.2MBDB_GP30_Vol1.pdf
Datasheet TDC-GP30 Vol. 2:
System-Integrated Solution for Ultrasonic Flow Meters CPU, Memory and Firmware
V0.01.3MBDB_GP30_Vol2.pdf
Datasheet TDC-GP30 Vol. 3:
System-Integrated Solution for Ultrasonic Flow Meters: User Manual
V0.01.3MBDB_GP30_Vol3.pdf
Datasheet TDC-GP30 Vol. 4:
Firmware, Memory and ROM Overview: User Manual
V0.52MBDB_GP30_Vol4_en.pdf
Datasheet TDC-GP22 Eval System:
Evaluation System for TDC-GP22
V0.25.3MBDB_GP22-EVA_en.pdf
Datasheet TDC-GP22:
Universal 2-Channel TDC-GP22 dedicated to Ultrasonic Heat & Water Meters
V0.94MBDB_GP22_en.pdf
Datasheet TDC-GP21 Eval System:
Evaluation System for TDC-GP21
V0.05.3MBDB_GP21-EVA_en.pdf
Datasheet TDC-GP21:
Universal 2-Channel TDC-GP21
V1.64MBDB_GP21_en.pdf
Development Support TDC-GP30:
Eval Kit Manual for TDC-GP30
V1.02.5MBGP30Y-EVA-KIT.pdf
Development Support TDC-GP30:
Demo Kit Manual for TDC-GP30
V1.03MBGP30-DEV-KIT.pdf
Development Support TDC-GP22:
Evaluation System for TDC-GP22 DEMO KIT
V0.02.4MBDB_GP22-DEMO_en.pdf
Development Support TDC-GP22:
Evaluation System for TDC-GP22
V0.22.8MBDB_GP22-EVA_en.pdf
Development Support TDC-GP21:
Evaluation System for TDC-GP21
V0.05.3MBDB_GP21-EVA_en.pdf
DescriptionVersionSizeDownload
Application Note:
TDC-GP30
External circuit for gas meters
V1.012MBGP30 Application note Gas Meter.pdf
Application Note:
TDC-GP30-F01
Scaling calibration coefficients by 2-point calibration
V1.011.5MBGP30-F01 Application note 2pt Calibration.pdf
Application Note 032:
Ultrasonic Water & Heat Metering with the TDC-GP22
V1.21.5MBAN032_en.pdf
Application Note 029:
Ultrasonic Heat Metering with the TDC-GP21
V1.13.6MBAN029_en.pdf
DescriptionVersionSizeDownload
Screencast TDC-GP30-F01:
2-Point Calibration with ams/acam Firmware Scaling calibration coefficients by 2-point calibration
9MBGP30_SUMTOF_Cal.zip
DescriptionVersionSizeDownload
Software TDC-GP30 / TDC-GP30-F01
Software package for GP30 Demo Kit
V1.6.0204MBacam_GP30-DEMO-KIT.zip
Software TDC-GP30-F01
Calibration Engine for GP30
V5.0169MBacam_GP30y_Calibration_Installer.zip
Software TDC-GP30-F01
Open part of the acam Firmware A1.A2.11.03
A1.D2.x259KBacam_FW_A1.A2.11.XX.zip
Software TDC-GP30-F01
Open part of the acam Firmware A1.D2.11.04
A1.D2.x35KBacam_FW_A1.D2.11.04.zip
Software TDC-GP22:
Software package for GP22-EVA-KIT
V1.9111MBCD-GP22-EVA-XP-WIN7.zip
Software TDC-GP22:
STM32 µC Sample code
34kGP22_main_AN032.c
Software TDC-GP21:
Software package for GP21-EVA-KIT
V3.9104MBCD-GP21-EVA-XP-WIN7.zip
Software PICOPROG V3.0(V2.0):
Driver Installer Stand Alone
R125MBPicoProg_v2_Driver_Installer_Stand-Alone_r11.zip
TypePart numberPackageRoHS compl.Shipping package
TDC-GP22:
TDC-GP22MNR 1949QFN32YesTray
TDC-GP22MNR 1950QFN32YesTape & Reel (5k)
GP22-EVA-KITMNR 1951SystemYesBox
GP22-DEMO-KITMNR 1979SystemYesBox
TDC-GP21:
TDC-GP21MNR 1839QFN32YesTray
TDC-GP21MNR 1720QFN32YesTape & Reel (3K/5K)
GP21-EVA-KITMNR 1781SystemYesBox
TDC-GP2:
TDC-GP2MNR 1058QFN32YesTray
TDC-GP2MNR 1480QFN32YesTape & Reel (2k)
TDC-GP1:
TDC-GP1MNR 278TQFP44YesTray
TDC-GPX:
TDC-GPXMNR 975TQFP100YesTray
TDC-GPX-FGMNR 1089TFBGA120YesTray

ADDITIONAL INFORMATION