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Analog Devices Inc./Maxim Integrated MAX14803AEWZ+
- Part No.:
- MAX14803AEWZ+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 110-WFBGA, WLBGA
- Datasheet:
-
MAX14803AEWZ+.pdf
- Description:
- 16 CHANNEL HIGH VOLTAGE SWITCH I
- Quantity:
- Payment:
- Shipping:
Inventory:3,262
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Product details
Overview
MAX14803AEWZ+ from Maxim Integrated is a 16-channel, high-voltage analog SPST switch IC designed for ultrasound probe and medical imaging front-ends. It delivers low-charge-injection (350 pC typ at +160V/–40V), 16 individually controllable switches, integrated 35kΩ bleed resistors on all COM/NO terminals, and operates with VPP/VNN up to +100V/–100V (230V total swing). It enables precise high-voltage signal routing in transducer array selection.
For engineers reviewing the MAX14803AEWZ+ datasheet, MAX14803AEWZ+ pinout, MAX14803AEWZ+ application, or MAX14803AEWZ+ equivalent, this page provides verified specifications, WLP package details, daisy-chain serial interface timing, bleed-resistor functionality, and real-world ultrasound transmit/receive switching context - all confirmed for the exact MAX14803AEWZ+ variant.
Technical Context
The MAX14803AEWZ+ implements a 16-bit serial shift register with transparent latch, controlled via DIN/CLK/LE/CLR signals referenced to a separate +2.7V to +5.5V VDD supply. Its HVCMOS process supports ±100V analog signal range (VNN ≤ VCOM_/VNO_ ≤ min[VNN+200V, VPP–10V]) and 3A peak per channel.
Unlike the LQFP-packaged MAX14803CCM+, the MAX14803AEWZ+ uses a 110-bump wafer-level package (WLP) rated for –40°C to +85°C operation and integrates 35kΩ bleed resistors on every switch terminal - a feature absent in MAX14802 variants and critical for discharging piezoelectric transducer capacitance in ultrasound systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Count | 16 independent SPST analog switches, each programmable via 16-bit serial interface |
| VPP/VNN Supply Range | +40V to +100V / –160V to –100V; supports asymmetric rails up to 230V differential (MAX14802ECM+/MAX14803AEWZ+ rating) |
| Charge Injection | 350 pC (typ) at VPP=+160V/VNN=–40V; ensures minimal voltage glitch during switching in sensitive receive paths |
| On-Resistance (RONS) | 16–27 Ω (typ) at ICOM_=200mA; enables low-loss high-current transmit pulses to transducers |
| Off-Isolation | –77 dB (typ) at 5 MHz, RL=50Ω; suppresses crosstalk between adjacent channels in dense probe arrays |
| Bleed Resistors | 35 kΩ integrated on each COM/NO terminal; actively discharges transducer capacitance between pulses without external components |
| Serial Interface Speed | 20 MHz max CLK frequency at VDD=+5V; supports fast reconfiguration of all 16 switches in <1 µs |
Pinout & Package
MAX14803AEWZ+ uses a 110-bump wafer-level package (WLP), 5.81 mm × 5.43 mm, rated for –40°C to +85°C operation. Bumps are on the bottom side; pin mapping follows JEDEC-standard WLP layout with dedicated analog, digital, and power terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VPP | Positive high-voltage supply | Bypass to GND with ≥0.1 µF ceramic capacitor; powers all 16 switch drains |
| VNN | Negative high-voltage supply | Bypass to GND with ≥0.1 µF ceramic capacitor; sets lower rail for analog signal range |
| VDD | Digital logic supply | +2.7V to +5.5V; powers shift register, latch, and interface logic only |
| GND | Analog/digital reference | Common return for VDD, VPP, VNN bypass caps and logic signals |
| DIN, CLK, LE, CLR | Serial control inputs | All referenced to VDD; support daisy-chaining via DOUT; LE active-low latches data |
| DOUT | Serial data output | Reflects DIN delayed by 16 clocks; enables cascading multiple MAX14803AEWZ+ devices |
| COM0–COM15, NO0–NO15 | Analog switch terminals | Each pair forms one SPST switch; all include integrated 35kΩ bleed resistors to GND |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bleed resistors | 35 kΩ per COM/NO terminal - eliminates need for external discharge networks in ultrasound transducer biasing |
| Low-charge-injection switching | 350 pC typical at +160V/–40V - minimizes baseline shift and settling time in high-gain receive chains |
| Wide high-voltage supply flexibility | VPP/VNN = +100V/–100V, +200V/0V, or +40V/–160V - accommodates diverse transducer drive topologies |
| Clamping diodes on COM terminals | Protects against positive overshoot beyond VPP - safeguards downstream receivers from transient overvoltage |
| Daisy-chainable 20 MHz serial interface | Single CLK/LE/CLR bus controls multiple devices - reduces MCU GPIO count and PCB routing complexity |
Applications
| Ultrasound Probe Multiplexing | Medical Imaging Transmit Beamforming |
|---|---|
Use Scenario: Selecting among 2–4 ultrasound transducer arrays within a single handheld probe housing. IC Role / Device Role / Timing Role: High-voltage analog switch enabling ±100V, 1–2A pulsed excitation to selected transducer elements while isolating inactive arrays. Use Value: Integrated bleed resistors discharge transducer capacitance between pulses, preventing residual charge buildup that degrades image contrast. |
Use Scenario: Routing high-voltage transmit pulses across 64–128 channels in ultrasound mainframe systems with multi-probe support. IC Role / Device Role / Timing Role: 16-channel SPST switch providing channel-specific high-voltage isolation and selection prior to pulse amplification stages. Use Value: –77 dB off-isolation at 5 MHz ensures minimal crosstalk between adjacent transmit channels, preserving beamforming accuracy. |
| Industrial Piezoelectric Actuator Control | High-Voltage Printer Head Switching |
Use Scenario: Driving precision piezoelectric positioners in semiconductor lithography equipment requiring fast, low-glitch voltage transitions. IC Role / Device Role / Timing Role: Low-charge-injection analog switch delivering clean ±100V step signals with <3.5 µs turn-on/off times. Use Value: 350 pC charge injection limits baseline error to <1 mV in closed-loop position feedback circuits. |
Use Scenario: Selecting individual print head segments in industrial inkjet printers using high-voltage electrostatic actuation. IC Role / Device Role / Timing Role: 16-channel switch managing ±100V drive to nozzle banks under microcontroller serial control. Use Value: Daisy-chain capability allows single MCU to coordinate >100 switches across multiple print heads with minimal wiring. |
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+ | 48-pin LQFP package; same 35kΩ bleed resistors and –40°C to +85°C rating; no WLP footprint | Suitable for board-level designs where thermal performance (θJA = 44°C/W) and hand-solderability are prioritized over size | Select MAX14803CCM+ when PCB space permits larger package and reflow compatibility with standard QFP processes is required. |
| MAX14802ECM+ | No bleed resistors; identical 48-pin LQFP package and –40°C to +85°C rating; includes same clamping diodes | Used where external bleed networks are acceptable and lowest possible quiescent current (5 µA typ) is critical | Choose MAX14802ECM+ only if transducer discharge is handled externally and WLP size constraint does not apply. |
Compared with MAX14803CCM+ and MAX14802ECM+, the MAX14803AEWZ+ uniquely combines wafer-level packaging (5.81 mm × 5.43 mm), integrated 35kΩ bleed resistors, and extended temperature operation - making it the sole option for space-constrained, high-density ultrasound probe assemblies requiring autonomous capacitive discharge.
Availability
MAX14803AEWZ+ is available at Aetrix Electronics and suitable for ultrasound imaging systems, medical diagnostic equipment, and industrial piezoelectric actuator control requiring stable component supply, long-term lifecycle support, and RoHS-compliant WLP packaging.
Supply support for MAX14803AEWZ+ 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 and mixed-signal ICs for demanding industrial, medical, and communications applications.
The MAX14802/MAX14803/MAX14803A product line was engineered specifically for high-voltage, low-distortion analog switching in medical ultrasound front-ends and industrial piezoelectric systems - emphasizing charge injection control, integrated protection, and flexible power architecture.
FAQ
What is the maximum allowable VPP–VNN differential voltage for MAX14803AEWZ+?
The MAX14803AEWZ+ supports a maximum VPP–VNN differential of 230V, as explicitly specified for the MAX14802ECM+ and MAX14803AEWZ+ ordering variants in the Absolute Maximum Ratings table. This is lower than the 250V rating of the commercial-grade MAX14802CCM+/MAX14803CCM+, reflecting tighter process validation for extended-temperature operation.
Does MAX14803AEWZ+ include integrated bleed resistors, and what is their value?
Yes, the MAX14803AEWZ+ includes integrated 35kΩ bleed resistors on every COM and NO terminal - a defining feature of the MAX14803 and MAX14803A families. These resistors discharge capacitive loads such as piezoelectric transducers between switching events, eliminating the need for external bleed networks in ultrasound probe designs.
What package type and dimensions does MAX14803AEWZ+ use?
The MAX14803AEWZ+ uses a 110-bump wafer-level package (WLP) measuring 5.81 mm × 5.43 mm, with bumps on the bottom side. This compact, near-chip-scale footprint is optimized for space-constrained ultrasound probe flex circuits and high-density medical imaging modules.
Can MAX14803AEWZ+ be daisy-chained with other devices, and how is it implemented?
Yes, the MAX14803AEWZ+ supports daisy-chaining via its DOUT pin, which outputs the DIN signal delayed by 16 clock cycles. To cascade devices, connect DOUT of one MAX14803AEWZ+ to DIN of the next, while sharing CLK, LE, and CLR lines. A single 16-bit write updates all devices when LE is pulsed low simultaneously.
What is the operating temperature range specified for MAX14803AEWZ+?
The MAX14803AEWZ+ is specified for operation from –40°C to +85°C, qualifying it for extended-temperature medical and industrial environments. This range is confirmed in the Ordering Information table and distinguishes it from commercial-grade variants like MAX14803CCM+, which are rated only from 0°C to +70°C.
MAX14803AEWZ+ 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+):
- 2.7V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 3.5µs, 3.5µs
- -3db Bandwidth:
- 20MHz
- Charge Injection:
- 820pC
- Channel Capacitance (CS(off), CD(off)):
- 11pF, 11pF
- Current - Leakage (IS(off)) (Max):
- 2µA
- Crosstalk:
- -80dB @ 5MHz
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 110-WLP (5.4x5.8)
MAX14803AEWZ+ FAQ
1.How can I place an order for MAX14803AEWZ+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14803AEWZ+ 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+ reliable?
The price and inventory of MAX14803AEWZ+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14803AEWZ+ is usually 5 days.
3.What payment methods are accepted for MAX14803AEWZ+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14803AEWZ+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14803AEWZ+?
MAX14803AEWZ+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14803AEWZ+ 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+?
For technical support, including MAX14803AEWZ+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14803AEWZ+ requirements.
6.How does Aetrix verify that MAX14803AEWZ+ is sourced from the original manufacturer or authorized distributors?
All MAX14803AEWZ+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX14803AEWZ+?
All MAX14803AEWZ+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX14803AEWZ+, 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+ part is unused and in its original packaging.
Return procedure for MAX14803AEWZ+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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