1 Features

? Transmitter supports:

– 64-channel 3-level pulser and active transmit/

receive (T/R) switch

? 3-level pulser:

– Maximum output voltage: ±100V

– Minimum output voltage: ±1V

– Maximum output current: 1A

– True return to zero to discharge output to

ground

– Second harmonic of –40dBc at 5MHz

– –3-dB Bandwidth with 400Ω || 125pF load

? 22MHz for a ±100-V supply

– Very low receive power: 0.1 mW/ch

? Active transmit/receive (T/R) switch with:

– Turn on resistance of 26Ω

– Turn on and Turn off time: 100ns

– Transient glitch: 10mVPP

? On-chip beam former with:

– Channel based T/R switch on and off controls

– Delay resolution: half beamformer clock period,

minimum 2.5ns

– Maximum delay: 214 beamformer clock period

– Maximum beamformer clockspeed: 200MHz

– On-Chip RAM for pattern and delay profile

– One 512 × 32 memory to store beam-former

pattern and delay for a group of 4 channels

– Global repeat feature present, enabling long

duration patterns

? High-speed (400 MHz maximum), 2-lane LVDS

serial programming interface.

– Low programming time: ≈2.5 us for delay profile

update

– 32-bit Checksum to detect wrong SPI writes

? Supports CMOS serial programming interface (50

MHz maximum)

? High reliability features:

– Internal temperature sensor and automatic

thermal shutdown

– No specific power sequencing requirement

– Error flag register to detect faulty conditions

– Integrated passives for the floating supplies and

bias voltages

– Small package: FC-BGA-196 (12 mm × 12 mm)

with 0.8-mm pitch

2 Applications

? Ultrasound imaging system

? Piezoelectric driver

? In-probe ultrasound imaging

3 Description

TX7364 is a highly integrated, high-performance

transmitter device for ultrasound imaging system.

The device has total 64 pulser circuits, 64 transmit/

receive switches (referred as T/R or TR switches) and

supports on-chip beamformer (TxBF). The device also

integrates on-chip floating power supplies that reduce

the number of required high voltage power supplies.

TX7364 has a pulser circuit that generates three-level

high voltage pulses (up to ±100 V) that is used to

excite multiple channels of an ultrasound transducer.

The device supports total 64 outputs. The maximum

output current is 1A.

Device can be used as a transmitter solution for many

applications like ultrasound imaging, non-destructive

testing, SONAR, LIDAR, marine navigation system,

brain imaging systems and so on.