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.
TI's Ultrasonic AFE offers programmability and flexibility to accommodate a wide-range of 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.
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.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TDC1011-Q1 | TSSOP (PW-28) | 9.70 mm × 4.40 mm |
DATE | REVISION | NOTES |
---|---|---|
July 2015 | * | Initial release. |
PIN | TYPE(1) | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
NC | 1 | No Connect (leave floating) | |
RX | 2 | I | Receive input |
VCOM | 3 | P | Output common mode voltage bias |
LNAOUT | 4 | O | Low noise amplifier output (for ac decoupling capacitor) |
PGAIN | 5 | I | Programmable gain amplifier input |
PGAOUT | 6 | O | Programmable gain amplifier output |
COMPIN | 7 | I | Echo qualification and zero-crossing detector input |
RTD1 | 8 | O | Resistance temperature detector channel 1 |
RTD2 | 9 | O | Resistance temperature detector channel 2 |
RREF | 10 | O | Reference resistor for temperature measurement |
RES | 11 | I | Reserved (connect to GND) |
ERRB | 12 | O | Error flag (open drain) |
START | 13 | O | Start pulse output |
STOP | 14 | O | Stop pulse output |
EN | 15 | I | Enable (active high; when low the TDC1011 is in SLEEP mode) |
TRIGGER | 16 | I | Trigger input |
RESET | 17 | I | Reset (active high) |
SCLK | 18 | I | Serial clock for the SPI interface |
CSB | 19 | I | Chip select for the SPI interface (active low) |
SDI | 20 | I | Serial data input for the SPI interface |
SDO | 21 | O | Serial data output for the SPI interface |
VIO | 22 | P | Positive I/O supply |
VDD | 23, 24 | P | Positive supply; all VDD supply pins must be connected to the supply. Place a 100-nF bypass capacitor to ground in close proximity to the pin. |
CLKIN | 25 | I | Clock input |
GND | 26 | G | Negative supply |
NC | 27 | No Connect (leave floating) | |
TX | 28 | O | Transmit output |