Overview
The TX7516ALH is a highly integrated, high-performance transmitter solution designed by Texas Instruments, specifically targeted for ultrasound imaging systems. This device features 16 pulser circuits and 16 transmit/receive (T/R) switches, along with an on-chip beamformer. It generates five-level high voltage pulses up to ±100 V, with a maximum output current of 2 A, making it ideal for exciting multiple channels of an ultrasound transducer. The TX7516ALH also integrates on-chip floating power supplies, reducing the need for external high voltage power supplies. The device supports advanced beamforming capabilities, including staggered pulsing and delay profiles, which are crucial for precise ultrasound transmission.
Key Specifications
| Specification | Value |
|---|---|
| Number of Channels | 16 |
| Pulse Levels | 5-level |
| Maximum Output Voltage | ±100 V |
| Minimum Output Voltage | ±1 V |
| Maximum Output Current | 2 A (4 A in 4A mode) |
| Bandwidth | 20 MHz for ±100-V supply, 25 MHz for ±70-V supply, 35 MHz for ±100-V supply in 4A mode |
| Integrated Jitter | 100 fs (100 Hz to 20 kHz) |
| CW Mode Close-in Phase Noise | –154 dBc/Hz at 1 kHz offset for 5-MHz signal |
| T/R Switch Turn-on Resistance | 8 Ω |
| T/R Switch Turn-on and Turn-off Time | 100 ns |
| Transient Glitch | 10 mVPP |
| Beamformer Clock Speed | Up to 320 MHz |
| Delay Resolution | Half beamformer clock period, minimum 2 ns |
| Maximum Delay | 214 beamformer clock periods |
| Package Type | FC-BGA-144 (10 mm × 10 mm) |
| Operating Temperature | 0°C to 70°C |
Key Features
- Supports 16-channel 5-level pulser and active T/R switch.
- True return to zero to discharge output to ground.
- On-chip beamformer with channel-based T/R switch controls and delay profiles.
- High-speed (400 MHz maximum) 2-lane LVDS serial programming interface and 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 floating supplies and bias voltages.
- Global and local repeat pattern feature for long duration patterns, suitable for Shear-Wave imaging.
Applications
- Ultrasound imaging systems.
- Piezoelectric driver applications.
- In-probe ultrasound imaging.
- Non-destructive testing.
- SONAR and LIDAR systems.
- Marine navigation systems.
- Brain imaging systems.
Q & A
- What is the maximum output voltage of the TX7516ALH?
The maximum output voltage is ±100 V. - How many channels does the TX7516ALH support?
The device supports 16 channels. - What is the maximum output current of the TX7516ALH?
The maximum output current is 2 A, with a 4 A mode available. - What is the bandwidth of the TX7516ALH?
The bandwidth is 20 MHz for a ±100-V supply, 25 MHz for a ±70-V supply, and 35 MHz for a ±100-V supply in 4A mode. - What is the integrated jitter of the TX7516ALH?
The integrated jitter is 100 fs measured from 100 Hz to 20 kHz. - What is the CW mode close-in phase noise of the TX7516ALH?
The CW mode close-in phase noise is –154 dBc/Hz at 1 kHz offset for a 5-MHz signal. - What is the turn-on resistance of the T/R switch in the TX7516ALH?
The turn-on resistance of the T/R switch is 8 Ω. - How long does it take for the T/R switch to turn on and off?
The T/R switch turn-on and turn-off time is 100 ns. - What is the maximum beamformer clock speed of the TX7516ALH?
The maximum beamformer clock speed is up to 320 MHz. - What is the operating temperature range of the TX7516ALH?
The operating temperature range is from 0°C to 70°C.
