Product details


Number of input channels 16 Active supply current (Typ) (mA) 3.6 Supply voltage (Max) (V) 5.5 Operating temperature range (C) 0 to 70 Interface type Serial open-in-new Find other Ultrasound AFEs


  • 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
open-in-new Find other Ultrasound AFEs


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.

open-in-new Find other Ultrasound AFEs

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See the full data sheet and other design resources for the commercial wireless-specific TX7516. Request now

For all other applications, see our general-purpose RF-sampling AFEs.

Technical documentation

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Type Title Date
* Data sheet TX7516 Five-Level, 16-Channel Transmitter with T/R Switch, and On-Chip Beamformer datasheet Jun. 12, 2019
Technical article Offset correction improves the next generation of heart-rate smart watches Aug. 24, 2015
Technical article JESD204B: Is it for you? Mar. 14, 2014
Technical article A new way to illuminate the human condition Dec. 30, 2013
Technical article Oximeter signaling: There’s more than meets the eye Dec. 04, 2013

Design & development

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Hardware development


The TX7516 evaluation module (EVM) evaluates the performance and features of the TX7516, which is a highly-integrated high-performance transmitter solution for ultrasound imaging systems. TX7516 has a total of 16 pulser circuits, 16 transmit/receive switches, and supports on-chip beamforming.


  • Transmit high-voltage pulses with 320-MHz beamforming clock speed
  • Onboard power sensing for all power supplies
  • Access to all TX7516 registers
  • Self-test mode to generate predefined transmit patterns without requiring a USB connection

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