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
– Support 4A 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 4A 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: 1mW/ch
• Active transmit/receive (T/R) switch with:
– Turnon resistance of 8 Ω
– Turnon and Turnoff 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 imaging system
• Piezoelectric driver
• In-probe ultrasound imaging

3 Description
TX7516 is a highly integrated, high-performance
transmitter solution 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.
TX7516 has a pulser circuit that generates five-level
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.
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.