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Analog Devices Inc./Maxim Integrated MAX14803AEWZ+T
- Part No.:
- MAX14803AEWZ+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 110-WFBGA, WLBGA
- Datasheet:
-
MAX14803AEWZ+T.pdf
- Description:
- IC SW SPST-NOX16 48OHM 110WLP
- Quantity:
- Payment:
- Shipping:
Inventory:4,644
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Product details
Overview
The MAX14803AEWZ+T from Maxim Integrated is a 16-channel, high-voltage analog SPST switch IC designed for ultrasound imaging probe and medical mainframe systems. It delivers low-charge-injection (350 pC typ at +160V/–40V), 16-channel independent control, ±100V analog signal range, integrated 35kΩ bleed resistors per terminal, and operates across –40°C to +85°C.
For engineers reviewing the MAX14803AEWZ+T datasheet, MAX14803AEWZ+T pinout, MAX14803AEWZ+T application, or MAX14803AEWZ+T equivalent, key selection criteria include high-voltage supply flexibility (VPP/VNN up to +160V/–40V), daisy-chainable 20MHz serial interface, on-resistance matching (±5%), off-isolation (–77dB at 5MHz), and WLP package thermal performance (θJA = 27°C/W).
Technical Context
The MAX14803AEWZ+T implements a 16-bit serial shift register with transparent latch, enabling precise per-channel switching via DIN/CLK/LE/CLR digital control. Its HVCMOS process supports high-voltage operation while maintaining low quiescent current (5µA typ on VDD) and fast switching (tON/tOFF = 2–3.5µs).
Each channel integrates clamping diodes at COM_ for positive overvoltage protection and 35kΩ bleed resistors on both COM_ and NO_ terminals-exclusive to MAX14803/MAX14803A variants-to safely discharge piezoelectric transducer capacitance without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VPP/VNN Supply Range | +160V/–40V max; enables flexible high-voltage biasing for ultrasonic transmit stages |
| On-Resistance (RONS) | 16–27Ω typ at 200mA; ensures minimal signal loss in high-current pulse applications |
| Off-Isolation | –77dB at 5MHz (RL = 50Ω); critical for crosstalk suppression in dense multi-channel arrays |
| Charge Injection | 350pC typ at +160V/–40V; reduces image artifacts in time-gain-compensated ultrasound receivers |
| Serial Interface Speed | 20MHz max (VDD = 5V); supports rapid reconfiguration of 16 switches in <1µs |
| Operating Temperature | –40°C to +85°C; qualified for industrial-grade medical equipment deployment |
| Package Thermal Resistance | θJA = 27°C/W (four-layer board); enables high-density PCB layout without forced cooling |
Pinout & Package
The MAX14803AEWZ+T is housed in an 110-bump wafer-level package (WLP), measuring 5.81mm × 5.43mm, with bottom-side bumps for compact system integration in space-constrained ultrasound probes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COM0–COM15 | Analog common terminal (16 channels) | Connects to transducer array ground reference or HV return path; each tied to internal clamp diode anode |
| NO0–NO15 | Analog normally-open terminal (16 channels) | Routes HV pulses to individual transducer elements; includes integrated 35kΩ bleed resistor to GND |
| VPP / VNN | High-voltage positive/negative supplies | Support asymmetric configurations (e.g., +160V/–40V); bypass required with ≥0.1µF ceramic capacitor |
| VDD / GND | Digital logic supply and ground | 2.7V–5.5V tolerant; powers 16-bit shift register, latch, and level shifters independently of HV rails |
| DIN / CLK / LE / CLR / DOUT | Serial control interface | Daisy-chainable 20MHz interface; LE latches data to update all 16 switches simultaneously; CLR forces all OFF |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 35kΩ bleed resistors | Discharges piezoelectric transducer capacitance automatically-eliminates need for external bleeder networks |
| Clamping diodes at COM_ | Protects against +VPP overshoot during fast switching; prevents latch-up in high-dV/dt ultrasound transmit bursts |
| Low-charge-injection architecture | 350pC typical at +160V/–40V enables sub-micron timing accuracy in echo-time measurement circuits |
| Daisy-chainable serial interface | Single CLK/LE/CLR bus controls multiple MAX14803AEWZ+T devices-reduces MCU GPIO count in 64+ channel systems |
| Power-on reset | Guarantees all 16 switches start OPEN at power-up-prevents unintended HV discharge during boot |
Applications
| Ultrasound Probe Multiplexing | Medical Mainframe Transmit Switching |
|---|---|
Use Scenario: Selecting one of 16 transducer elements within a linear or phased-array ultrasound probe head for transmit pulse routing. IC Role / Device Role / Timing Role: High-voltage SPST switch controlling ±100V, 1–2A burst pulses to individual piezoelectric elements; synchronized via LE edge. Use Value: Enables compact, low-noise probe design with integrated bleed resistors eliminating discrete HV discharge paths. | Use Scenario: Routing high-voltage transmit signals from centralized HV drivers to multiple probe interfaces in a diagnostic ultrasound mainframe. IC Role / Device Role / Timing Role: Channel-select switch operating under ±100V/200V differential conditions; coordinated via daisy-chained serial interface. Use Value: Reduces interconnect complexity and improves channel-to-channel isolation (–77dB @ 5MHz) versus relay-based solutions. |
| Industrial Inkjet Printhead Control | High-Voltage Test Equipment Multiplexing |
Use Scenario: Driving piezoelectric actuators in high-resolution industrial inkjet printheads requiring precise 100V–200V pulse control. IC Role / Device Role / Timing Role: Low-charge-injection analog switch managing fast-rising (20V/ns) voltage pulses to nozzle elements. Use Value: Minimizes droplet placement error via 350pC charge injection and <3.5µs turn-on/turn-off times. | Use Scenario: Multiplexing HV test signals (e.g., ±150V) between automated test equipment and DUTs in semiconductor burn-in or reliability labs. IC Role / Device Role / Timing Role: Robust SPST switch with integrated OVP and bleed resistors for safe, repeatable HV connection sequencing. Use Value: Eliminates manual HV probing; supports automated test sequences with guaranteed open-at-power-up safety state. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage analog switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX14803CCM+ | Same electrical specs but in 48-pin LQFP; no WLP thermal advantage; commercial temp only (0°C to +70°C) | Suitable for non-portable, lab-based ultrasound systems where board space and extended temperature are not constraints | Select when footprint compatibility with legacy LQFP layouts is required and extended temperature range is unnecessary |
| MAX14802ECM+ | Lacks integrated bleed resistors; same 48-pin LQFP; extended temp (–40°C to +85°C); no WLP option | Better for cost-sensitive, lower-complexity printer or industrial actuator systems where external bleed networks are acceptable | Choose when lowest BOM cost is prioritized and external 35kΩ resistors can be added per channel |
Compared with MAX14803CCM+ and MAX14802ECM+, the MAX14803AEWZ+T uniquely combines extended temperature operation, WLP thermal efficiency (θJA = 27°C/W), and monolithic bleed resistors-making it optimal for portable, high-channel-count ultrasound probes demanding miniaturization and reliability.
Availability
The MAX14803AEWZ+T is available at Aetrix Electronics and suitable for ultrasound imaging systems, medical mainframes, and industrial inkjet printhead controllers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX14803AEWZ+T 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
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and high-voltage ICs for medical, industrial, and communications applications.
The MAX14803AEWZ+T belongs to Maxim's high-voltage analog switch product line, engineered specifically for ultrasound transmit multiplexing and other applications demanding low charge injection, robust overvoltage protection, and compact WLP integration.
FAQ
What is the maximum allowable VPP–VNN voltage difference for the MAX14803AEWZ+T?
The MAX14803AEWZ+T supports a maximum VPP–VNN differential of 250V. Per the datasheet, absolute maximum ratings specify VPP–VNN ≤ 250V, with validated operation at +160V/–40V (200V diff), +100V/–100V (200V diff), and +40V/–160V (200V diff). Exceeding 250V risks permanent damage to the MAX14803AEWZ+T.
Does the MAX14803AEWZ+T require external bleed resistors for piezoelectric transducer discharge?
No. The MAX14803AEWZ+T integrates 35kΩ bleed resistors on both COM_ and NO_ terminals of all 16 channels-this is a defining feature distinguishing it from MAX14802 and enabling simplified, reliable transducer discharge without external components.
Can the MAX14803AEWZ+T operate with asymmetric high-voltage supplies like +200V/0V?
Yes. The MAX14803AEWZ+T supports asymmetric configurations including +200V/0V, +100V/–100V, and +40V/–160V. Its analog signal range is defined as VNN to min(VNN + 200V, VPP – 10V), allowing full utilization of the +200V/0V rail pair in single-supply ultrasound transmit stages.
What is the purpose of the CLR input on the MAX14803AEWZ+T?
The CLR (clear) input on the MAX14803AEWZ+T is an active-high signal that resets the internal latch to zero, forcing all 16 switches to the OFF (open) state regardless of shift register contents. It overrides LE and CLK, providing fail-safe shutdown capability critical for medical safety compliance in ultrasound systems using the MAX14803AEWZ+T.
How does the MAX14803AEWZ+T handle power-up sequencing of VDD, VPP, and VNN supplies?
The MAX14803AEWZ+T does not require strict supply sequencing. Its internal power-on-reset circuit ensures all switches start OPEN regardless of ramp order. However, analog inputs (COM_/NO_) must remain unconnected or satisfy VNN ≤ Vsignal ≤ VPP during power-up/down to prevent latch-up-verified by characterization, not production tested.
MAX14803AEWZ+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 16
- On-State Resistance (Max):
- 48Ohm
- Channel-to-Channel Matching (ΔRon):
- 2.4Ohm
- Voltage - Supply, Single (V+):
- 40V ~ 200V
- Voltage - Supply, Dual (V±):
- ±160V
- Switch Time (Ton, Toff) (Max):
- 3.5µs, 3.5µs
- -3db Bandwidth:
- 20MHz
- Charge Injection:
- 820pC
- Channel Capacitance (CS(off), CD(off)):
- 11pF
- Current - Leakage (IS(off)) (Max):
- 2µA
- Crosstalk:
- -80dB @ 5MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 110-WLP (5.4x5.8)
MAX14803AEWZ+T FAQ
1.How can I place an order for MAX14803AEWZ+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14803AEWZ+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX14803AEWZ+T reliable?
The price and inventory of MAX14803AEWZ+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14803AEWZ+T is usually 5 days.
3.What payment methods are accepted for MAX14803AEWZ+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14803AEWZ+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14803AEWZ+T?
MAX14803AEWZ+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14803AEWZ+T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX14803AEWZ+T?
For technical support, including MAX14803AEWZ+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14803AEWZ+T requirements.
6.How does Aetrix verify that MAX14803AEWZ+T is sourced from the original manufacturer or authorized distributors?
All MAX14803AEWZ+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX14803AEWZ+T meets industry standards.
7.What is the process for return or replacement of MAX14803AEWZ+T?
All MAX14803AEWZ+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14803AEWZ+T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX14803AEWZ+T part is unused and in its original packaging.
Return procedure for MAX14803AEWZ+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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