Time-to-Digital-Converters by Acam
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Acam TDC

Time to Digital Converters
TDC - GP1
TDC - GP2
TDC - GP21
TDC - GP22
TDC - GPX
Time-to-Digital Applications
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PICOSTRAIN

Time to Digital Converters for Digital Strain Gage
PICOSTRAIN PS08
PICOSTRAIN PS081
PICOSTRAIN PS09
PICOSTRAIN PS021
Strain Gage Applications
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PICOCAP

Time to Digital Converters for Capacitance Measurement
PICOCAP PCap01
PICOCAP PS021
PICOCAP PSA21
Capacitance Applications
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PICOTURN

Time to Digital Converters for Speed Sensors
PICOTURN 2G
PICOTURN BM/SM
Speed Sensor Applications
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Time-to-Digital - TDC Cookbook

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TDC - Cookbook
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GP2 - The New General Purpose TDC

TDC with Special Features for Ultrasonic Flow Meters and Ultrasonic Heat Meters

The TDC-GP2 is the next generation of acam general-purpose TDCs. Higher resolution and smaller package size make it ideal for cost-sensitive industrial applications. With special function blocks like a fire pulse generator, stop enable, temperature measurement, and clock control, it is perfectly suited for flowmeter and heat-meter applications.
ACAM TDC® Circuits
GP2 - Measurement
GP2 - Temperature Measurement
GP2 - Fire Pulse Generator
GP2 - Ultrasonic Heat Meter
GP2 - ATMD Evaluation Kit
GP2 - Data Sheet

Gp2 chip
Product No. of Channels Resolution Maximum Range Features Package
TDC-GP2 1, 2 65 ps 4 ms Temperature measuring unit
fire-pulse generator		 QFN32
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GP2 - General Circuit Features

General Features Temperature Features
  • Trigger to rising and/or falling edge
  • I/O voltage 1.8 V to 5.5 V
  • Core voltage 1.8 V to 3.6 V
  • 1 MHz continuous data rate max.
  • Temperature range 40°C to 125°C
  • 4 wire SPI interface
  • QFN 32 package
  • 2 or 4 sensors
  • Pt500/Pt1000 or higher
  • Very high resolution: 16-bit rms
  • (0.004°C resolution for platinum sensors)
  • Low current (0.08 μA per 30 second interval)
Measurement Range 1 Measurement Range 2
  • 2 channels with typ. 65 ps resolution (50 ps rms)
  • Measurement range 0 to 1.8 μs
  • 15 ns pulse-pair resolution, 4-fold multihit
  • 4 events can be measured against each other
  • Windowing for precise stop enable
  • 1 channel with typ. 65 ps resolution (50 ps rms)
  • Measurement range 500 ns to 4 ms
  • 2 x CLKHS pulse-pair resolution, 3-fold multihit
  • Trigger to rising or falling edge
  • Each of 3 events can be assigned as adjustable
  • Measuring window with 10 ns resolution
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GP2 - Circuit Block Diagram and Package Outline

Block Diagram

Package Outline

GP2 Chip diagram GP2 package
Click the images for a closup view
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Applications
Ultrasonic Heat Meters Ultrasonic Flow Meters Laser Range Finders
Laser Scanners Magnetostrictive Positioning