TX75E16中文资料德州仪器数据手册PDF规格书

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.