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TDC1011
SNAS662 –JULY 2015
TDC1011 Single Channel Ultrasonic Sensing Analog Front End (AFE) for Level Sensing,
Concentration Sensing Applications
1 Features
3 Description
The TDC1011 is a fully integrated analog front-end
(AFE) for ultrasonic sensing measurements of liquid
level, fluid identification/concentration, and proximity/
distance applications common in automotive,
industrial, medical, and consumer markets. When
paired with an MSP430/C2000 MCU, power, wireless,
and source code, TI provides the complete ultrasonic
sensing solution.
1
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Measurement Range: Up to 8 ms
Operating Current: 1.8 µA (2 SPS)
Transmitter Channel TX
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Supports Single Transducer Applications
Programmable Excitation: 31.25 kHz to 4 MHz,
Up to 31 Pulses
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Receiver Channel RX
TI's Ultrasonic AFE offers programmability and
flexibility to accommodate
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STOP Cycle-to-Cycle Jitter: 50 psRMS
a
wide-range of
Low-Noise and Programmable Gain Amplifiers
applications and end equipment. The TDC1011 can
be configured for multiple transmit pulses and
frequencies, gain, and signal thresholds for use with
a wide-range of transducer frequencies (31.25kHz to
4MHz) and Q-factors. Similarly, the programmability
of the receive path allows ultrasonic waves to be
detected over a wider range of distances/tank sizes
and through various mediums.
Access to Signal Chain for External Filter
Design
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Programmable Threshold Comparator for Echo
Qualification
Programmable Low Power Mode for Long TOF
Measurements
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Temperature Measurement
Selecting different modes of operation, the TDC1011
can be optimized for low power consumption, making
it ideal for battery powered applications. The low
noise amplifiers and comparators provide extremely
low jitter, enabling picosecond resolution and
accuracy.
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Interface to Two PT1000/500 RTDs
RTD-to-RTD Matching Accuracy 0.02°CRMS
Operating Temperature Range: -40°C to 125°C
2 Applications
Device Information(1)
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Measurements Through Tanks of Varying
Materials:
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TDC1011
TSSOP (PW-28)
9.70 mm × 4.40 mm
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Fluid Level
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Fluid Identification / Concentration
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.