MAX14807
MAX14807
PRODUCTIONDual, High-Voltage 2.2A Analog Pulser
Dual, High-Voltage 220Vpp 2.2A Analog Amplifier with Integrated Pulser
- Part Models
- 2
- 1ku List Price
- Starting From $34.34
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Overview
- Saves Space—Optimized for High-Channel-CountSystems
- Dual Integrated Channels with Independent High-Voltage Supplies Eliminate the Need for External Transformers
- High Performance—Designed to Enhanced Image Quality
- 15MHz Power Bandwidth
- -54dB (typ) THD for Second and Third Harmonic at 5MHz (Analog Mode)
- Low-Phase Noise (-120dBc/Hz in Analog Mode,156dBc/Hz in Digital Mode)
- Class AB Output Programmable Output BiasCurrent
- Analog Class AB Amplifier with 220VP-P Capability
- Low-Power Modes Maximize System Power Savings
- RT_ Feature Reduces Power Consumption in Analog Mode
- Programmable Output Stage Current in Analog Mode
- Digital Mode Available for Doppler Operative Modes
The MAX14807 dual, high-voltage (HV) 2.2A analog pulser generates HV arbitrary waveforms or pulses for driving piezoelectric transducers in ultrasound systems, and requires no external transformer. The device features both analog and digital modes of operation. In analog mode, the device amplifies low-voltage differential analog signals to a high-voltage waveform up to 220VP-P in the ultrasound frequency range. In digital mode, the device generates a low-voltage (LV) continuous-wave Doppler (CWD) signal or a trilevel HV pulse from low-voltage digital inputs.
The MAX14807 features a gain-selectable (28dB or 40dB) differential amplifier and a Class AB push-pull output stage for analog mode operation. The differential amplifier boosts the low-voltage differential signal to HV single-ended signal. The bias current of the Class AB output stage is set by an external resistor. The device has a 25Ω active clamp to ensure a low-impedance path to GND as soon as the HV burst is over. The MAX14807 also features a trilevel digital transmitter for digital mode operation. The digital transmitter can be used in operating modes such as CWD, color flow mode (CFM), and pulsed-wave Doppler (PWD) where pulse shaping is not required, but efficiency and phase noise are the main constraints.
A transmit/receive function allows the analog amplifier to enter a low-power mode during receive time to minimize power consumption. Transition between transmit and receive (and vice versa) can be done online during the vector acquisition. Output glitches during transmit/receive commutation are minimized. The MAX14807 features a power off mode to reduce power consumption. In power off mode, both the analog and digital transmitters are in high impedance. The MAX14807 has a bilevel thermal protection. When the die temperature exceeds the thresholds (+120°C or +162°C typ), the corresponding open-drain output asserts.
The MAX14807 is available in a 64-pin (10mm x 10mm), TQFP exposed-pad package and is specified over the -40°C to +85°C extended temperature range.
APPLICATIONS
- Ultrasound Medical Imaging
- Cleaning Equipment
- Flaw Detection
- Piezoelectric Drivers
- Test Equipment
Documentation
Data Sheet 1
Request an NDA
Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA).
Request an NDAADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX14807ECB+ | TQFP | ||
| MAX14807ECB+T | TQFP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Nov 20, 2014 - 1448 ASSEMBLY |
||
| MAX14807ECB+ | PRODUCTION | |
| MAX14807ECB+T | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
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