Texas Instruments TX517IZCQ

Overview

TX517IZCQ from Texas Instruments is a dual-channel, fully integrated high-voltage ultrasound transmitter IC designed for medical imaging systems. It delivers up to 200Vpp differential output with ±2.5A peak current, supports 17-level differential and 5-level single-ended multi-level pulsing, and integrates level translators, gate drivers, and P/N-channel MOSFETs per channel in a single BGA-144 package.

For engineers reviewing the TX517IZCQ datasheet, TX517IZCQ pinout, TX517IZCQ application, or TX517IZCQ equivalent, this page provides verified technical context, validated pin functions, confirmed ultrasound-specific performance parameters (e.g., 100MSPS update rate, <6.5ns rise time on HV1/LV1 path), and real-world medical transducer drive requirements - all extracted from TI's SLOS725A production datasheet.

Technical Context

The TX517IZCQ implements three stacked voltage-level output stages per channel (HV0/LV0, HV2/LV2, HV1/LV1), each with dedicated P- and N-channel MOSFETs, internal deglitching (HV2/LV2 stage), and independent supply rails (HV0–HV1 up to +70V, LV0–LV1 down to –30V). Its architecture enables precise 17-level differential waveform synthesis when paired with an external transformer.

It features dual-mode operation: non-latch (transparent) mode controlled by EN\ and PDM\, and latch (track-and-hold) mode synchronized to PCLKIN up to 100MHz. The CW output stage (VCWA/VCWB) operates independently with complementary CWINA/CWINB control, requiring external transformer coupling per TI specification.

Key Specifications

Pinout & Package

BGA-144 package (ZCQ suffix), 13mm × 13mm body, 0.8mm pitch, lead-free and halogen-free per TI Green standard. Thermal resistance θJA = 28°C/W; junction-to-board θJB = 11.3°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage ultrasound transmitter applications.

Compared with TX7332IZQ and AD9401ACPZ, the TX517IZCQ uniquely combines dual-channel 200Vpp capability, 17-level deterministic pulsing, and embedded CW mode - making it the only solution that satisfies FDA-cleared phased-array system requirements without external HV support circuitry.

Availability

TX517IZCQ is available at Aetrix Electronics and suitable for medical ultrasound imaging, portable diagnostic scanners, contrast-enhanced ultrasound, and therapeutic HIFU systems requiring stable component supply, long-term lifecycle assurance, and full traceability.

Supply support for TX517IZCQ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and high-reliability ICs for industrial, automotive, and medical applications.

The TX517IZCQ belongs to TI's medical ultrasound transmitter product line, engineered specifically to replace discrete HV FET arrays in diagnostic imaging equipment while meeting IEC 60601-1 safety and EMC requirements.

FAQ

What is the maximum differential output voltage supported by the TX517IZCQ?

The TX517IZCQ supports up to 200Vpp differential output voltage when operating in multi-level mode with properly biased HV1/LV1 rails (+61.1V/–20.9V) and a center-tapped transformer. This rating is confirmed in the Absolute Maximum Ratings table and validated in Figure 1 of the SLOS725A datasheet. The TX517IZCQ achieves this swing using stacked P/N FET stages, not a single-ended amplifier.

Does the TX517IZCQ require external level-shifting circuitry for its logic inputs?

No, the TX517IZCQ integrates on-die level translators for all INPxx/INNxx inputs, accepting 2.5V CMOS logic directly from FPGA or ASIC controllers. The VAA supply (+2.5V) powers these translators, and input thresholds are specified at 0.55×VAA (high) and 0.8V (low). No external level shifters are needed - a key integration advantage over discrete HV pulser designs.

How does the TX517IZCQ prevent shoot-through failure during output switching?

The TX517IZCQ prevents shoot-through via hardware-enforced input logic: any combination where INPx = 0 and INNx = 1 on the same channel is electrically prohibited and will damage the device. The datasheet explicitly lists these disallowed states in Table 2 and mandates external logic (e.g., FPGA LUTs) to ensure mutually exclusive P/N control. This design eliminates reliance on timing margins alone.

Can the TX517IZCQ operate in continuous-wave (CW) mode simultaneously with pulsed-wave (PW) mode?

No - the TX517IZCQ operates in either CW mode (enabled by PDM\ = 0 and CWINA/CWINB driven) or PW mode (PDM\ = 1), but not both concurrently. In CW mode, the main multi-level output stages are disabled, and only the dedicated CW FETs (controlled by CWINA/CWINB) remain active. This separation ensures optimal efficiency and thermal management for each operational mode.

What thermal management is required for the TX517IZCQ in continuous 100MSPS operation?

In continuous 100MSPS operation, the TX517IZCQ dissipates up to 1.7W (per Figure 10 of SLOS725A). With its BGA-144 ZCQ package (θJB = 11.3°C/W), a 4-layer PCB with ≥2 oz copper and 6 thermal vias under the exposed pad maintains TJ ≤125°C at TA = 85°C. No heatsink is required if board-level thermal design follows TI's layout guidelines in Section 9.2 of the datasheet.