1 Features
1• Transmitter supports:
– 16-channel 3-level or 8-channel 5-level pulser
and active transmit/receive (T/R) switch
– Very low power on-chip beamforming mode (5-
level mode):
– In receive-only mode: 17 mW
– In transmit-receive mode: 598 mW
– In CW mode (0.6-A mode): 1.97 W
– In global power-down mode: 4.3 mW
• 3-level, 5-level pulser:
– Maximum output voltage: ±100 V
– Minimum output voltage: ±1 V
– Maximum output current: 2.4 A to 0.6 A
– Maximum clamp current: 1 A to 0.25 A (in 3-
level mode)
– Maximum clamp current: 2 A to 0.5 A (in 5-
level mode)
– Second harmonic of –45 dBc at 5 MHz
– CW mode 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
– Supports 4.8-A mode in 5-level mode
– –3-dB Bandwidth with 1-kΩ || 240-pF load
– 20 MHz (For ±100-V supply in 2.4-A mode)
– 36 MHz (For ±100-V supply in 4.8-A mode)
– 25 MHz (For ±70-V supply in 2.4-A mode)
• Active transmit/receive (T/R) switch with:
– ON/OFF control signal
– Turnon resistance of 12 Ω
– Bandwidth: 50 MHz
– HD2: -50 dBc
– Turnon time: 0.5 μs
– Turnoff time: 1.75 μs
– Transient glitch: 50 mVPP
• Off-chip beam former with:
– Jitter cleaning using synchronization feature
– Maximum synchronization clock frequency:
200 MHz
• On-chip beam former with:
– Delay resolution: one beamformer clock
period, minimum 5 ns
– Maximum delay: 213 beamformer clock period
– Maximum beamformer clock speed: 200 MHz
– On-chip RAM to store
– 16 Delay profiles
– 48/28 pattern-profiles for 3- or 5-level mode
• High-speed (100 MHz maximum) 1.8-V and 2.5-V
CMOS serial programming interface
• Automatic thermal shutdown
• No specific power sequencing requirement in 3-
level mode
• Small package: NFBGA-216 (15 mm × 10 mm)
with 0.8-mm pitch

2 Applications
• Ultrasound imaging system
• Piezoelectric driver
• In-probe ultrasound imaging

3 Description
The TX7316 is a highly integrated, high-performance
transmitter solution for ultrasound imaging system.
The device has total 16 pulser circuits (PULS), 16
transmit/receive (T/R) switches, and supports both
on-chip and off-chip beamformer (TxBF). The device
also integrates on-chip floating power supplies that
reduce the number of required high voltage power
supplies.