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Analog Devices Inc./Maxim Integrated MAX4968CCM+
- Part No.:
- MAX4968CCM+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 48-LQFP
- Datasheet:
-
MAX4968CCM+.pdf
- Description:
- IC SW SPST-NOX16 34OHM 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,217
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Product details
Overview
MAX4968CCM+ from Maxim Integrated is a 16-channel, high-linearity, bidirectional SPST analog switch optimized for ultrasound imaging and industrial NDT systems. It delivers 18Ω typical on-resistance, ±100V negative supply (VNN), +10V positive supply (VPP), 210VP-P analog signal range, and operates across –40°C to +85°C in a 48-pin LQFP package.
For engineers reviewing the MAX4968CCM+ datasheet, MAX4968CCM+ pinout, MAX4968CCM+ application, or MAX4968CCM+ equivalent, this page provides verified technical context, real-world switching performance metrics, daisy-chain serial interface behavior, bleed-resistor-free architecture, and validated alternatives for high-voltage analog routing in medical and industrial systems.
Technical Context
The MAX4968CCM+ uses SOI HVCMOS process technology to integrate high-voltage bilateral MOS switches with low-power CMOS logic control. Its 16 independent SPST channels support bidirectional analog signals up to 210VP-P, with DC-to-30MHz small-signal bandwidth (CLOAD = 200pF) and 30MHz large-signal bandwidth under 60V burst conditions.
Control is implemented via a 16-bit serial shift register with daisy-chainable DOUT, active-low LE latch, and asynchronous CLR. Logic inputs (CLK, DIN, LE, CLR) operate from VDD (+2.37V to +5.5V), while analog terminals swing from VNN (–160V) to VNN + 210V - eliminating need for dedicated +100V supplies required by legacy alternatives like HV2601.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RONS) | 18Ω typical - enables low insertion loss and minimal signal distortion in high-voltage transmit paths. |
| Analog Signal Range | VNN to VNN + 210V - supports ±100V operation with 10V headroom, suitable for ultrasound burst transmission. |
| Small-Signal Bandwidth | DC to 30MHz (CLOAD = 200pF) - preserves fidelity of echo-receive signals without filtering artifacts. |
| Off-Isolation | –80dB typical at 5MHz (50Ω) - ensures channel crosstalk suppression critical for multi-probe beamforming. |
| Charge Injection | 150pC - minimizes voltage glitches during switching, reducing baseline drift in sensitive receive chains. |
| Serial Interface Speed | 25MHz CLK - allows full 16-bit configuration in ≤640ns, enabling rapid channel reconfiguration per scan line. |
| Supply Voltages | VNN = –160V to 0V; VPP = +9.5V to +10.5V; VDD = +2.37V to +5.5V - simplifies power architecture vs. +100V-supply competitors. |
Pinout & Package
Package: 48-pin LQFP (7mm × 7mm), RoHS-compliant, with internal thermal resistance θJA = 44°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW0A–SW15A, SW0B–SW15B | Analog switch terminals (32 pins) | Each pair forms one SPST channel; bidirectional, symmetric voltage handling up to 210VP-P. |
| VNN | Negative high-voltage supply | Accepts –160V to 0V; bypassed to GND with ≥0.1µF ceramic capacitor for transient stability. |
| VPP | Positive high-voltage supply | +9.5V to +10.5V; eliminates need for +100V rails used by HV2601/MAX14802. |
| VDD | Logic supply | +2.37V to +5.5V; powers serial interface and level shifters independently of analog rails. |
| DIN, CLK, LE, CLR, DOUT | Serial control interface | Standard SPI-like timing (25MHz max); LE latches 16-bit state; CLR forces all switches open asynchronously. |
| GND | Reference ground | Common return for logic and bypass capacitors; isolated from analog signal path to minimize noise coupling. |
| N.C. | No connection | Pins 1, 2, 14, 16, 24, 35, 36 - must remain unconnected; no internal bonding or function. |
Key Features
| Feature | Design Value |
|---|---|
| Latch-free architecture | Transparent latch operation with LE control eliminates metastability risk during dynamic reconfiguration. |
| SOI HVCMOS process | Enables robust high-voltage switching (>200VP-P) with low charge injection (150pC) and flat RONS vs. voltage. |
| No dedicated high-voltage supply | +10V VPP replaces +100V rails - reduces BOM count, improves safety, and eases PCB layout in ultrasound front-ends. |
| RONS flatness guaranteed | ≤2% variation across full input range - maintains consistent gain and phase response in wide-dynamic-range imaging. |
| Daisy-chainable serial interface | Single CLK/LE/CLR bus controls multiple devices; DOUT feeds DIN of next device - scales to 64+ channels without GPIO expansion. |
Applications
| Medical Ultrasound Imaging | Industrial NDT Systems |
|---|---|
|
Use Scenario: High-voltage transmit switching in phased-array probe modules, selecting among 2–4 transducers per channel. IC Role / Device Role / Timing Role: SPST analog switch routing ±100V bursts to piezoelectric elements; synchronized to beamformer timing with sub-microsecond tON/tOFF. Use Value: Eliminates need for discrete HV relays or transformer-based isolation, reducing size, cost, and acoustic impedance mismatch. |
Use Scenario: Multiplexing ultrasonic transducers in pipeline inspection tools operating in harsh environments. IC Role / Device Role / Timing Role: Bidirectional analog switch managing 210VP-P pulse-echo signals between excitation source and receiver chain. Use Value: Maintains >30MHz bandwidth and –80dB off-isolation to resolve fine material defects without signal degradation. |
| High-Voltage Printer Drivers | Capacitive Load Switching |
|
Use Scenario: Driving electrostatic print heads requiring precise ±100V waveform control across 16 parallel channels. IC Role / Device Role / Timing Role: Linear analog switch modulating high-voltage bias on toner deposition electrodes with low RONS flatness. Use Value: 18Ω typical RONS and <±70mV output spike ensure consistent charge transfer and dot placement accuracy. |
Use Scenario: Sequencing high-voltage bias to MEMS mirrors or piezoelectric actuators with fast settling. IC Role / Device Role / Timing Role: SPST switch enabling/disabling HV paths while minimizing residual charge via low leakage (<1µA off-state). Use Value: 9pF off-capacitance and 13pF on-capacitance preserve signal edge integrity in fast-switching precision motion control. |
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 |
|---|---|---|---|
| MAX14802 | Pin-to-pin compatible; requires +100V VPP instead of +10V - higher system complexity and safety certification burden. | Same 16-channel SPST function but designed for legacy ultrasound platforms with existing +100V infrastructure. | Select MAX14802 only if upgrading from prior designs using HV2601 and retaining +100V supply rails. |
| HV2601 | Supertex part; identical pinout and channel count, but lacks integrated serial interface - requires external shift registers and level shifters. | Used in cost-sensitive industrial NDT where discrete control logic is already present and board space is less constrained. | Choose HV2601 when minimizing IC count is secondary to component cost and legacy design reuse is prioritized. |
Compared with MAX14802 and HV2601, the MAX4968CCM+ reduces system-level voltage rail count by eliminating +100V generation, integrates full serial control to cut external logic, and delivers superior RONS flatness and charge injection specs for high-fidelity medical imaging.
Availability
MAX4968CCM+ is available at Aetrix Electronics and suitable for medical ultrasound imaging, industrial NDT equipment, and high-voltage printer driver designs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for MAX4968CCM+ 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 demanding industrial, medical, and communications applications.
The MAX4968CCM+ belongs to Maxim's high-voltage analog switch product line, engineered specifically to replace electromechanical relays and discrete HV solutions in ultrasound front-ends and NDT instrumentation.
FAQ
What is the maximum analog signal voltage the MAX4968CCM+ can handle?
The MAX4968CCM+ supports an analog dynamic signal range from VNN to VNN + 210V, enabling operation up to ±100V with 10V headroom. This specification is guaranteed under AC operation above 500kHz and applies across the full –40°C to +85°C temperature range. The MAX4968CCM+ achieves this with SOI HVCMOS process technology, ensuring robustness without external protection circuitry.
Does the MAX4968CCM+ include integrated bleed resistors?
No, the MAX4968CCM+ does not include integrated bleed resistors. That feature is exclusive to the MAX4968A variant (e.g., MAX4968AECM+), which integrates 40kΩ typical shunt resistors on each switch terminal. The MAX4968CCM+ relies on external discharge paths for capacitive loads - a key differentiator confirmed in Maxim's ordering guide and functional diagrams.
Can multiple MAX4968CCM+ devices be controlled with a single microcontroller interface?
Yes, the MAX4968CCM+ supports daisy-chaining via its DOUT pin, which outputs shifted data after 16 clock cycles. By connecting DOUT of one device to DIN of the next, and sharing CLK, LE, and CLR lines, a single microcontroller can configure up to dozens of MAX4968CCM+ units with no additional GPIOs. This is explicitly documented in Figure 4 and Applications Information section of the datasheet.
What is the typical on-resistance and how flat is it across the signal range?
The MAX4968CCM+ has 18Ω typical on-resistance (RONS) at VPP = +10V, VNN = –100V, and VSW_ = 0V. Its RONS flatness is guaranteed at ≤2% over the full analog input range, measured at 0.5MHz with 80VP-P signal swing. This flatness ensures uniform gain and phase response across wide dynamic ranges - critical for harmonic distortion control in ultrasound imaging.
How does the MAX4968CCM+ simplify power supply design compared to alternatives like HV2601?
The MAX4968CCM+ eliminates the need for a +100V supply rail required by HV2601 and MAX14802, using only +10V (VPP) and –160V (VNN). This reduces system complexity, lowers component count, avoids high-voltage safety certifications, and shrinks PCB area. The +10V VPP rail is generated with standard DC-DC converters, unlike the specialized, inefficient +100V supplies needed for legacy alternatives.
MAX4968CCM+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tray
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 16
- On-State Resistance (Max):
- 34Ohm
- Channel-to-Channel Matching (ΔRon):
- 1.02Ohm
- Voltage - Supply, Single (V+):
- 9.5V ~ 10.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 5µs, 3.5µs
- -3db Bandwidth:
- 30MHz
- Charge Injection:
- 150pC
- Channel Capacitance (CS(off), CD(off)):
- 9pF
- Current - Leakage (IS(off)) (Max):
- 1µA
- Crosstalk:
- -76dB @ 5MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-LQFP (7x7)
MAX4968CCM+ FAQ
1.How can I place an order for MAX4968CCM+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4968CCM+ 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 MAX4968CCM+ reliable?
The price and inventory of MAX4968CCM+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4968CCM+ is usually 5 days.
3.What payment methods are accepted for MAX4968CCM+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4968CCM+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4968CCM+?
MAX4968CCM+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4968CCM+ 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 MAX4968CCM+?
For technical support, including MAX4968CCM+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4968CCM+ requirements.
6.How does Aetrix verify that MAX4968CCM+ is sourced from the original manufacturer or authorized distributors?
All MAX4968CCM+ 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 MAX4968CCM+ meets industry standards.
7.What is the process for return or replacement of MAX4968CCM+?
All MAX4968CCM+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4968CCM+, 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 MAX4968CCM+ part is unused and in its original packaging.
Return procedure for MAX4968CCM+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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