TX810 Datasheet, PDF (1/17 Pages) Texas Instruments – 8-Channel, Programmable T/R Switch for Ultrasound

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TX810
SLLS996A – SEPTEMBER 2009 – REVISED APRIL 2010
8-Channel, Programmable T/R Switch for Ultrasound
Check for Samples: TX810
FEATURES
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•2 Compact T/R Switch for Ultrasound
• Flexible Programmability
– 8 Bias Current Settings
– 8 Power/Performance Combinations
– Easy Power-Up/Down control
• Fast Wake Up Time
• Dual Supply Operation
• Optimized Insertion Loss
APPLICATIONS
• Medical Ultrasound
• Industrial Ultrasound
DESCRIPTION
The TX810 provides an integrated solution for a wide
range of ultrasound applications. It is an 8 channel,
current programmable, transmit/receive switch in a
small 6mm × 6mm package.
The internal diodes limit the output voltage when high
voltage transmitter signals are applied to the input.
While the insertion loss of TX810 is minimized during
receive mode.
Unlike conventional T/R switches, the TX810 contains
a 3-bit interface used to program bias current from
7mA to 0mA for different performance and power
requirements. When the TX810 bias current is set as
0mA (i.e., high-impedance mode), the device is
configured as power-down mode. In the
high-impedance mode, TX810 does not add
additional load to high-voltage transmitters. In
addition, the device can wake up from power-down
mode in less than 1µs. With these advanced
programmability features, significant power saving
can be achieved in systems.
VP
1 Channel
of TX810
HV TX
LV RX
VN
Figure 1. Block Diagram of TX810
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2009–2010, Texas Instruments Incorporated