Overview
The TX7332ZBX, produced by Texas Instruments, is a highly integrated, high-performance transmitter solution designed specifically for ultrasound imaging systems. This device features 32-channel three-level pulser circuits and active transmit/receive (T/R) switches, along with both on-chip and off-chip beamforming capabilities. The TX7332 integrates on-chip floating power supplies, reducing the need for multiple high-voltage power supplies. It generates three-level high-voltage pulses up to ±100 V, which can excite multiple channels of an ultrasound transducer. The device is packaged in a 260-pin NFBGA (ZBX) package with dimensions of 17 mm × 11 mm and operates within a temperature range of 0°C to 70°C.
Key Specifications
| Parameter | Specification |
|---|---|
| Package | 260-pin NFBGA (ZBX) |
| Operating Temperature Range | 0°C to 70°C |
| Number of Channels | 32 |
| Maximum Output Voltage | ±100 V |
| Minimum Output Voltage | ±1 V |
| Maximum Output Current | 1.2 A to 0.3 A |
| Maximum Clamp Current | 0.5 A to 0.12 A |
| Second Harmonic | –45 dBc at 5 MHz |
| CW Mode 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 |
| –3-dB Bandwidth | 20 MHz (for ±100-V supply), 25 MHz (for ±70-V supply) |
| Active T/R Switch Bandwidth | 50 MHz |
| Turn-on Resistance | 24 Ω |
| Turn-on Time | 0.5 µs |
| Turn-off Time | 1.75 µs |
| Transient Glitch | 50 mV |
| Maximum Beamformer Clock Speed | 200 MHz |
| On-chip RAM Capacity | 16 delay profiles, 32 pattern profiles |
Key Features
- Three-Level Pulser: Generates high-voltage pulses up to ±100 V, with configurable output current from 1.2 A to 0.3 A.
- Active T/R Switch: Provides high isolation between the high-voltage transmitter and the low-voltage receiver, with 24 Ω impedance in the ON state.
- On-Chip and Off-Chip Beamforming: Supports both modes with synchronization feature to eliminate jitter from external control signals.
- Low Power Modes: Very low power consumption in receive-only, transmit-receive, CW, and global power-down modes.
- High-Speed Programming Interface: 100 MHz maximum 1.8-V and 2.5-V CMOS serial programming interface.
- Automatic Thermal Shutdown: No specific power sequencing requirement.
- Compact Packaging: 260-pin NFBGA package with dimensions of 17 mm × 11 mm and 0.8-mm pitch).
Applications
The TX7332ZBX is primarily designed for ultrasound imaging systems. It is used to excite multiple channels of an ultrasound transducer, enabling precise control over the direction of ultrasound transmission through transmit beamforming. This makes it an essential component in medical imaging equipment, particularly in diagnostic ultrasound devices.
Q & A
- What is the primary application of the TX7332ZBX?
The primary application of the TX7332ZBX is in ultrasound imaging systems, specifically for exciting multiple channels of an ultrasound transducer.
- What type of package does the TX7332ZBX come in?
The TX7332ZBX comes in a 260-pin NFBGA (ZBX) package.
- What is the operating temperature range of the TX7332ZBX?
The operating temperature range of the TX7332ZBX is from 0°C to 70°C.
- What is the maximum output voltage of the TX7332ZBX?
The maximum output voltage of the TX7332ZBX is ±100 V.
- Does the TX7332ZBX support both on-chip and off-chip beamforming?
Yes, the TX7332ZBX supports both on-chip and off-chip beamforming.
- What is the maximum beamformer clock speed of the TX7332ZBX?
The maximum beamformer clock speed of the TX7332ZBX is 200 MHz.
- How many delay profiles and pattern profiles can be stored in the on-chip RAM?
The on-chip RAM can store up to 16 delay profiles and 32 pattern profiles.
- What is the bandwidth of the active T/R switch?
The bandwidth of the active T/R switch is 50 MHz.
- Does the TX7332ZBX have automatic thermal shutdown?
Yes, the TX7332ZBX has automatic thermal shutdown.
- What is the turn-on resistance of the T/R switch?
The turn-on resistance of the T/R switch is 24 Ω.
