TDC-GP2 acam messelectronic gmbh, TDC-GP2 Datasheet - Page 2

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

1. Introduction
1.1 System Overview
TDC-GP2 is the next generation of acam general-
purpose TDCs. Higher resolution and smaller package
size make it ideal for cost sensitive industrial applica-
tions. With special functional blocks like a fire-pulse
generator, stop-enable, temperature measurement,
and clock control it is perfectly suited for ultrasonic
flow-meter and heat-meter applications.
Measurement range 1
Measurement range 2
2 channels with typ. 50 ps resolution rms
Measurement range 3.5 ns to 1.8 µs (0 to 1.8µs
between stop channels)
15 ns pulse-pair resolution with 4-fold multihit capability
4 events can be measured arbitrarily against each other
Trigger to rising or/and falling edge
Windowing for precise stop enable
1 channel with typ. 50 ps resolution rms
Measurement range 500 ns to 4 ms
2 x CLKHS pulse-pair resolution with 3-fold multihit ca-
pability
Trigger to rising or/and falling edge
Each of the 3 events can be assigned to an adjustable
measuring window with 10ns resolution
acam-messelectronic gmbh - Am Hasenbiel 27 - D-76297 Stutensee-Blankenloch - Germany - www.acam.de
EN_Stop1
EN_Stop2
EN_Start
SenseT
Stop1
Stop2
LoadT
Fire2
Fire1
Start
PT4
PT3
PT2
PT1
Stop Enable
Fire-pulse
Generator
Generator
TDC
4 MHz Ceramic
Resonator
ControlUnit
Fire_In
Clock Control
incl. Clock-Cal.
to all units
2
TDC-GP2
32.768 kHz
Oszillator
ALU
Temperature measurement unit
General
2 or 4 sensors
PT500/PT1000 or higher
Very high resolution: 16 Bit eff.
(0.004 °C resolution for platinum sensors)
Ultra low current (0.08 µA when measuring
every 30 seconds)
QFN 32 package
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
Fire pulse generator
Clock calibration unit
Precise stop enable by windowing
Trigger to rising and/or falling edge
Time_Val1
Time_Val2 28
Time_Val3
Time_Val4
to all units
RSTN
28
28
28
INTN
SO
SI
SCK
SSN
QFN5-32
1.1 System Overvi ew
TDC-GP2