1 Features
• Transmitter supports:
– 16-channel 5-level pulser and active transmit/
receive (T/R) switch
• 5-level pulser:
– Maximum output voltage: ±100 V
– Minimum output voltage: ±1 V
– Maximum output current: 2 A
– Supports 4-A output current mode.
– True return to zero to discharge output to
ground
– Second harmonic of –45 dBc at 5 MHz
– –3-dB Bandwidth with 1-kΩ || 240-pF load
• 20 MHz for a ±100-V supply
• 25 MHz for a ±70-V supply
• 35 MHz for a ±100-V supply in 4-A mode
– Integrated jitter: 100 fs measured from 100 Hz
to 20 kHz
– CW mode close-in phase noise: –154 dBc/Hz
at 1-kHz offset for 5-MHz signal
– Very low receive power: 1 mW/ch
– Programmable load damp resistor: 200 Ω, 100
Ω or 67 Ω
• Active transmit/receive (T/R) switch with:
– Turn-on resistance: 8 Ω
– Turn-on and turn-off time: 100 ns
– Transient glitch: 10 mVPP
• On-chip beam former with:
– Channel based T/R switch on and off controls
– Delay resolution: half beamformer clock period,
minimum 2 ns
– Maximum delay: 214 beamformer clock period
– Maximum beamformer clock speed: 320 MHz
– Per channel pattern control with 2K distinct
level
– Global and local repeat pattern, enabling long
duration patterns for Shear Wave imaging
– Supports 120 delay profiles
• High-speed (400 MHz maximum), 2-lane LVDS
serial programming interface.
– Low programming time: < 500 ns for delay
profile update
– 32-bit checksum feature to detect wrong SPI
writes
• Supports CMOS serial programming interface (50
MHz maximum)
• 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-144 (10 mm × 10 mm)
with 0.8-mm pitch

2 Applications
• Ultrasound scanners
• Piezo drivers
• Ultrasound smart probes

3 Description
The TX75E16 is a highly integrated, high-performance
transmitter for ultrasound imaging system. The device
has total 16 pulser circuits, 16 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.
The TX75E16 has a pulser circuit that generates fivelevel
high voltage pulses (up to ±100 V) that is used to
excite multiple channels of an ultrasound transducer.
The device supports total 16 outputs. The maximum
output current is 2 A.
The device can be used as a transmitter for many
applications like ultrasound imaging, non-destructive
testing, SONAR, LIDAR, marine navigation system,
brain imaging systems and so on.
The TX75E16 (referred as device in this data sheet)
is highly integrated transmitter targeted for exciting
ultrasound transducers. Device integrates 16 pulsers
and 16 T/R switches, on-chip beamformer, and
pattern generator.
The device integrates all the decoupling capacitors
required for the floating supplies and internal bias
voltages. This integration significantly reduces the
required number of external capacitors. The TX75E16
is available in a 10-mm × 10-mm 144-pin FC-BGA
package (ALH package) and is specified for operation
from 0°C to 70°C.