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Design

TDC1011-Q1

SNAS670 – JULY 2015

TDC1011-Q1 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

1

•

Automotive AEC-Q100 (TDC1011-Q1)

(AFE) for ultrasonic sensing measurements of liquid

•

Measurement Range: Up to 8 ms

level, fluid identification/concentration, and proximity/

•

Operating Current: 1.8 µA (2 SPS)

distance

applications

common

in

automotive,

industrial, medical, and consumer markets. When

•

Transmitter Channel TX

paired with an MSP430/C2000 MCU, power, wireless,

–

Supports Single Transducer Applications

and source code, TI provides the complete ultrasonic

–

Programmable Excitation: 31.25 kHz to 4 MHz,

sensing solution.

Up to 31 Pulses

TI's

Ultrasonic

AFE

offers

programmability

and

•

Receiver Channel RX

flexibility

to

accommodate

a

wide-range

of

–

applications and end equipment. The TDC1011 can

be configured for multiple transmit pulses and

–

Low-Noise and Programmable Gain Amplifiers

frequencies, gain, and signal thresholds for use with

–

Access to Signal Chain for External Filter

a wide-range of transducer frequencies (31.25kHz to

Design

4MHz) and Q-factors. Similarly, the programmability

–

Programmable Threshold Comparator for Echo

of the receive path allows ultrasonic waves to be

detected over a wider range of distances/tank sizes

Qualification

and through various mediums.

–

Programmable Low Power Mode for Long TOF

Measurements

Selecting different modes of operation, the TDC1011

can be optimized for low power consumption, making

•

Temperature Measurement

it ideal for battery powered applications. The low

–

Interface to Two PT1000/500 RTDs

noise amplifiers and comparators provide extremely

–

low

jitter,

enabling

picosecond

resolution

and

accuracy.

•

Operating Temperature Range: -40°C to 125°C

Device Information(1)

2 Applications

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

Measurements Through Tanks of Varying

TDC1011-Q1

TSSOP (PW-28)

9.70 mm × 4.40 mm

Materials:

(1) For all available packages, see the orderable addendum at

–

Fluid Level

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.