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Analog Devices Inc./Maxim Integrated MAX320CPA+
- Part No.:
- MAX320CPA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX320CPA+.pdf
- Description:
- IC SWITCH SPST-NO X 2 35OHM 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:181
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Product details
Overview
MAX320CPA+ from Maxim Integrated is a precision dual SPST analog switch with two normally open (NO) channels, designed for ±3V to ±8V bipolar supply operation. It delivers 35Ω max on-resistance, <2Ω channel matching, 150ns max turn-on time, and 100pA max leakage - enabling high-fidelity signal routing in ±5V DAC/ADC interfaces and battery-powered test equipment.
For engineers reviewing the MAX320CPA+ datasheet, MAX320CPA+ pinout, MAX320CPA+ application, or MAX320CPA+ equivalent, key selection criteria include guaranteed break-before-make timing (not applicable), charge injection ≤5pC, ESD robustness >2000V, and compatibility with ±5V dual-rail systems requiring low RON flatness and sub-100ns switching.
Technical Context
The MAX320CPA+ implements CMOS-based transmission-gate architecture optimized for bidirectional analog signal switching across the full ±5V supply range. Its logic inputs accept TTL/CMOS-compatible thresholds referenced to V+, and all analog terminals (COM, NO, NC) support rail-to-rail voltage swing from V− to V+ without degradation in RON flatness.
It operates with guaranteed performance over 0°C to +70°C, features internal ESD protection per Method 3015.7 (>2000V), and maintains <2.5nA max on-leakage at +85°C - confirming suitability for precision sample-and-hold and military radio front-end switching where signal integrity and thermal stability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 35Ω max at ±5V - ensures minimal signal attenuation and gain error in precision instrumentation paths |
| RON Matching | <2Ω max between channels - enables matched gain/phase response in differential or dual-path circuits |
| Charge Injection | 5pC max - limits voltage glitch on sampled nodes in ADC input stages and sample-and-hold amplifiers |
| Switching Speed | tON <150ns, tOFF <100ns - supports multiplexing of audio, video, and fast control signals up to ~3MHz |
| Leakage Current | 100pA max at +25°C, <2.5nA at +85°C - preserves accuracy in high-impedance sensor and DAC output buffering |
| ESD Protection | >2000V per Method 3015.7 - provides robust handling during board assembly and field deployment |
| Supply Range | ±3V to ±8V - supports legacy industrial ±5V systems and extended-range test equipment |
Pinout & Package
MAX320CPA+ uses an 8-pin plastic DIP package (0.300" wide) rated for 0°C to +70°C operation. Pin functions are electrically isolated and fully bidirectional for analog signal routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply rail | Accepts +3V to +8V; powers internal logic and switch driver circuitry |
| V− | Negative supply rail | Accepts −3V to −8V; establishes reference for analog signal range and bias network |
| IN1, IN2 | Digital control inputs | TTL/CMOS-compatible; drive corresponding switches ON/OFF with logic-high = V+ and logic-low ≤ (V+ − 2.5V) |
| COM1, COM2 | Analog common terminals | Bidirectional signal ports; connect to source or load depending on system topology |
| NO1, NO2 | Normally open analog outputs | Connect to COMx only when respective INx = logic-high; no connection when INx = logic-low |
Key Features
| Feature | Design Value |
|---|---|
| Low on-resistance flatness | 4Ω max variation over full ±5V analog range - maintains consistent gain across signal amplitude |
| Guaranteed low charge injection | ≤5pC - prevents settling errors in high-resolution data acquisition systems |
| Bipolar supply flexibility | Operates from ±3V to ±8V - eliminates need for level-shifting in mixed-voltage systems |
| Ultra-low power dissipation | 1.25mW typical at ±5V - extends battery life in portable guidance and test instruments |
| High off-isolation | 72dB at 1MHz - suppresses crosstalk between adjacent switched channels in audio/video routing |
Applications
| Battery-Operated Test Equipment | ±5V Precision Data Acquisition |
|---|---|
Use Scenario: Portable multimeters and handheld signal analyzers requiring low-power, rail-to-rail analog switching under battery constraints. IC Role / Device Role / Timing Role: Dual-channel SPST switch routing sensor inputs to ADC front-ends while preserving signal fidelity and minimizing standby current. Use Value: 100pA leakage and 1.25mW power enable >100-hour battery runtime; 35Ω RON ensures <0.1% gain error in 12-bit measurement paths. |
Use Scenario: Industrial DAQ modules interfacing ±5V DACs and ADCs with multiplexed sensor arrays. IC Role / Device Role / Timing Role: Precision analog path selector enabling sequential sampling of multiple transducers without external op-amp buffering. Use Value: <2Ω RON matching and 4Ω flatness minimize channel-to-channel gain mismatch; 150ns switching supports ≥10kSPS multiplexing. |
| Military Radio Front-Ends | Heads-Up Display Signal Routing |
Use Scenario: RF receiver calibration paths and antenna switching in ruggedized tactical radios operating across −40°C to +85°C. IC Role / Device Role / Timing Role: High-reliability analog gate isolating test signal injection points from active receive chains during self-test sequences. Use Value: >2000V ESD rating withstands field-handling stress; 2.5nA leakage at +85°C ensures stable bias in RF detector circuits. |
Use Scenario: Avionics HUD systems switching between primary flight display and synthetic vision video sources. IC Role / Device Role / Timing Role: Low-distortion video path selector routing composite or digital video signals to projection optics drivers. Use Value: 9pF off-capacitance and 72dB off-isolation prevent ghosting and crosstalk; 100ns tOFF enables clean source transitions without visible artifacts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX320ESA+ | Same electrical specs; SO-8 package, −40°C to +85°C temp range | Better thermal performance for industrial enclosures; requires PCB rework for surface-mount layout | Select when extended temperature range or automated assembly is required |
| ADG1419BRUZ | Single-supply only (±15V max), 3.8Ω typical RON, 12ns switching | Optimized for high-speed, single-rail systems; lacks bipolar supply flexibility and guaranteed 5pC charge injection | Select for faster switching in +5V-only designs where rail-to-rail analog swing is not required |
Compared with MAX320ESA+ and ADG1419BRUZ, the MAX320CPA+ uniquely balances bipolar supply operation, ultra-low leakage, and DIP packaging for legacy test gear upgrades - offering direct replacement capability without layout changes or thermal derating concerns.
Availability
MAX320CPA+ is available at Aetrix Electronics and suitable for battery-operated systems, ±5V DAC/ADC interfaces, and military radio front-ends requiring stable component supply across long production lifecycles.
Supply support for MAX320CPA+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and automotive markets.
The MAX320 series belongs to Maxim's precision analog switch product line, engineered specifically for low-leakage, low-RON, and rail-to-rail bipolar switching in test and measurement, avionics, and military systems.
FAQ
What is the maximum supply voltage range supported by the MAX320CPA+?
The MAX320CPA+ operates from ±3V to ±8V dual supplies, with absolute maximum ratings allowing V+ up to (V− − 0.3V) and up to +17V total supply differential. This makes the MAX320CPA+ suitable for both standard ±5V systems and extended-range applications such as high-voltage test fixtures - provided V+ − V− does not exceed 17V and individual rails remain within specified limits.
Does the MAX320CPA+ support rail-to-rail analog signal switching?
Yes, the MAX320CPA+ supports analog signals from V− to V+ on all COM, NO, and NC pins. Its CMOS transmission-gate design ensures minimal RON variation (<4Ω flatness) across the full ±5V range, enabling accurate switching of signals such as audio waveforms, sensor outputs, and DAC voltages without clipping or distortion - a key capability confirmed in the MAX320CPA+ datasheet's Typical Operating Characteristics.
Is the MAX320CPA+ pin-compatible with other variants in the MAX320 family?
Yes, the MAX320CPA+ shares identical pinout and footprint with MAX321CPA+ and MAX322CPA+ in the 8-pin DIP package. All three devices use the same V+, V−, IN1/IN2, COM1/COM2, and NO1/NC1/NO2/NC2 assignments - enabling drop-in substitution in hardware where logic polarity or switch configuration (NO vs NC) aligns with system requirements.
What is the guaranteed charge injection specification for the MAX320CPA+?
The MAX320CPA+ guarantees ≤5pC maximum charge injection, measured with CL = 1.0nF, VGEN = 0V, and RGEN = 0Ω per Figure 4 of the datasheet. This low value minimizes voltage glitches on high-impedance nodes - critical for maintaining accuracy in sample-and-hold circuits and precision ADC input stages where the MAX320CPA+ is commonly deployed.
How does the MAX320CPA+ handle ESD events during handling or operation?
The MAX320CPA+ incorporates on-chip protection delivering >2000V ESD immunity per Method 3015.7, verified during production testing. This allows safe manual handling and operation in environments prone to static discharge - such as field-deployed test equipment and avionics maintenance - without requiring external protection components, provided supply sequencing and absolute maximum ratings are observed per the MAX320CPA+ datasheet guidelines.
MAX320CPA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 35Ohm
- Channel-to-Channel Matching (ΔRon):
- 300mOhm
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- ±2.7V ~ 8V
- Switch Time (Ton, Toff) (Max):
- 150ns, 100ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 9pF, 9pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -85dB @ 1MHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX320CPA+ FAQ
1.How can I place an order for MAX320CPA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX320CPA+ 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 MAX320CPA+ reliable?
The price and inventory of MAX320CPA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX320CPA+ is usually 5 days.
3.What payment methods are accepted for MAX320CPA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX320CPA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX320CPA+?
MAX320CPA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX320CPA+ 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 MAX320CPA+?
For technical support, including MAX320CPA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX320CPA+ requirements.
6.How does Aetrix verify that MAX320CPA+ is sourced from the original manufacturer or authorized distributors?
All MAX320CPA+ 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 MAX320CPA+ meets industry standards.
7.What is the process for return or replacement of MAX320CPA+?
All MAX320CPA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX320CPA+, 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 MAX320CPA+ part is unused and in its original packaging.
Return procedure for MAX320CPA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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