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Analog Devices Inc./Maxim Integrated MAX322CPA+
- Part No.:
- MAX322CPA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX322CPA+.pdf
- Description:
- IC SW SPST-NO/NCX2 35OHM 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,546
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Product details
Overview
The MAX322CPA+ from Maxim Integrated is a precision dual-supply SPST analog switch featuring one normally open (NO) and one normally closed (NC) channel, designed for ±3V to ±8V bipolar operation. It delivers 35Ω max on-resistance, <5pC charge injection, guaranteed break-before-make timing (2–5ns), and 100pA max off-leakage - enabling high-fidelity signal routing in ±5V DAC/ADC interfaces and battery-powered test equipment.
For engineers reviewing the MAX322CPA+ datasheet, MAX322CPA+ pinout, MAX322CPA+ application, or MAX322CPA+ equivalent, key selection criteria include its dual-channel mixed NO/NC topology, bipolar supply tolerance, low RON flatness (<4Ω), and ESD robustness (>2000V per Method 3015.7).
Technical Context
The MAX322CPA+ implements CMOS-based transmission-gate architecture with independent logic-controlled switches per channel, supporting bidirectional analog signal flow across the full supply range (V− to V+). Its break-before-make behavior is guaranteed for the MAX322 variant only, preventing momentary shorting during channel transitions.
It operates with logic thresholds referenced to V+: VIH = V+ − 1.5V and VIL = V+ − 2.5V, and accepts input logic levels down to V− without damage. Analog signal integrity is preserved via low leakage (<2.5nA at +85°C), fast switching (tON < 150ns, tOFF < 100ns), and minimal capacitive coupling (COFF = 9pF per channel).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±3V to ±8V - supports wide bipolar rail operation without level-shifting circuitry |
| On-Resistance (RON) | 35Ω max - ensures minimal signal attenuation and gain error in precision signal paths |
| RON Matching | <2Ω between channels - critical for matched gain/phase in differential or dual-path systems |
| Charge Injection | <5pC - reduces voltage glitch and settling error in sample-and-hold and multiplexed ADC front-ends |
| Break-Before-Make Delay | 2–5ns - prevents transient short-circuit during channel switching in mixed NO/NC configurations |
| ESD Protection | >2000V per Method 3015.7 - enables robust handling in bench and field-deployed test equipment |
| Leakage Current | 100pA max (25°C), <2.5nA (+85°C) - preserves accuracy in high-impedance sensor and reference circuits |
Pinout & Package
MAX322CPA+ uses an 8-pin plastic DIP package (0°C to +70°C operating range), with through-hole mounting and standard 0.3" width footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive Supply Rail | Bipolar positive supply input; must be applied before V− and signals per sequencing guidelines |
| IN1 | Logic Input (Channel 1) | Controls NO1/NC1 state; compatible with V+-referenced TTL/CMOS logic |
| COM2 | Analog Common (Channel 2) | Bidirectional analog node for NC2 connection; supports full V− to V+ signal swing |
| NC2 | Normally Closed Terminal (Ch2) | Connected to COM2 when IN2 = LOW; breaks before NO2 closes during transition |
| V− | Negative Supply Rail | Bipolar negative supply input; clamped internally to prevent reverse bias damage |
| IN2 | Logic Input (Channel 2) | Controls NO2/NC2 state; independent of IN1 for asynchronous dual-channel control |
| COM1 | Analog Common (Channel 1) | Bidirectional analog node for NO1/NC1; shares no internal coupling with COM2 |
| NO1 | Normally Open Terminal (Ch1) | Connects to COM1 only when IN1 = HIGH; complements NC1 in mixed-switch topology |
Key Features
| Feature | Design Value |
|---|---|
| Mixed NO/NC dual-channel topology | Enables fail-safe or redundant signal routing - e.g., default-closed path with active-open override |
| Guaranteed break-before-make | Eliminates cross-conduction risk in power-switching or relay-replacement applications |
| Low RON flatness (<4Ω) | Maintains consistent gain and linearity across full analog input voltage range (V− to V+) |
| Sub-5pC charge injection | Minimizes sampling error in precision data acquisition systems using external hold capacitors |
| Bidirectional analog signal handling | Allows flexible I/O assignment - COM, NO, and NC pins function as inputs or outputs interchangeably |
Applications
| Battery-Powered Test Equipment | ±5V Precision DAC/ADC Interfaces |
|---|---|
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 analog switch routing sensor inputs or reference voltages with minimal offset and leakage-induced drift. Use Value: 1.25mW total power dissipation and 100pA leakage extend battery life while preserving measurement accuracy over temperature. | Use Scenario: Industrial DAQ modules interfacing ±5V-output DACs and ±5V-input ADCs with multiplexed sensor banks. IC Role / Device Role / Timing Role: Precision signal selector providing matched RON and low charge injection to avoid gain/offset errors during channel scanning. Use Value: 2Ω RON matching and <4Ω RON flatness ensure consistent transfer function across all selected channels. |
| Heads-Up Display (HUD) Signal Routing | Military Radio Audio Switching |
Use Scenario: Avionics HUD systems switching video sync pulses and RGB analog signals between primary and backup graphics sources. IC Role / Device Role / Timing Role: High-isolation (72dB off-isolation), low-crosstalk (85dB) analog switch managing critical timing and video paths. Use Value: Guaranteed break-before-make prevents momentary shorts that could corrupt sync timing or induce display artifacts. | Use Scenario: Secure military radios requiring ESD-hardened, low-leakage switching of encrypted audio paths and PTT control lines. IC Role / Device Role / Timing Role: Robust analog switch handling voice-band signals and digital control with >2000V HBM ESD protection. Use Value: 2.5nA max leakage at +85°C maintains signal integrity in thermally stressed vehicular or airborne enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX322CSA+ | Same electrical specs; SO-8 package (surface-mount), 0°C to +70°C rating | Suitable for automated PCB assembly; requires reflow-compatible layout vs. through-hole DIP | Select for space-constrained or high-volume SMT designs where thermal performance matches DIP |
| ADG1422BRZ | Single-supply only (±15V max), higher RON (1.8Ω typ), no guaranteed break-before-make | Requires level-shifting for bipolar ±5V systems; lacks MAX322CPA+'s fail-safe switching guarantee | Choose only if single-supply operation suffices and break-before-make is not safety-critical |
Compared with MAX322CSA+, the MAX322CPA+ offers identical analog performance but in a through-hole DIP package for prototyping and legacy board compatibility; versus ADG1422BRZ, it provides native bipolar support and deterministic break-before-make - essential for fault-tolerant analog routing.
Availability
MAX322CPA+ is available at Aetrix Electronics and suitable for battery-operated test equipment, ±5V DAC/ADC interfaces, and military radio audio switching requiring stable component supply across extended production lifecycles.
Supply support for MAX322CPA+ 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and automotive markets.
The MAX320/MAX321/MAX322 family was engineered for precision bipolar analog switching in environments demanding low leakage, low distortion, and guaranteed timing behavior - particularly in portable instrumentation and ruggedized communication systems.
FAQ
What is the maximum allowable supply voltage range for the MAX322CPA+?
The MAX322CPA+ supports dual-supply operation from ±3V to ±8V, with the absolute maximum V+ to V− differential rated at 17V. Operation outside this range risks permanent damage. For reliable long-term use, maintain V+ and V− within ±3V to ±8V and observe proper power sequencing: apply V+ first, then V−, before applying logic or analog signals.
Does the MAX322CPA+ support bidirectional analog signal flow?
Yes, the MAX322CPA+ supports fully bidirectional analog signal routing on all terminals - COM1, NO1, NC1, COM2, NO2, and NC2 can each serve as either input or output. This flexibility allows the MAX322CPA+ to be used in signal multiplexing, demultiplexing, and analog bus configurations without polarity constraints.
Is break-before-make timing guaranteed for the MAX322CPA+?
Yes - break-before-make behavior is explicitly guaranteed for the MAX322CPA+, with a specified delay of 2ns to 5ns (at +25°C). This feature prevents momentary shorting between NO and NC paths during channel transitions, making the MAX322CPA+ suitable for safety-critical or fault-tolerant analog routing where cross-conduction must be avoided.
What is the typical on-resistance matching between channels in the MAX322CPA+?
The MAX322CPA+ guarantees on-resistance matching of less than 2Ω between its two channels (∆RON < 2Ω), measured under identical conditions (V+ = +5V, V− = −5V, ICOM = 1.0mA, VNO/VNC = ±3V). This tight matching ensures balanced gain and phase response in differential or dual-path signal chains using the MAX322CPA+.
Can the MAX322CPA+ operate with logic inputs driven to V−?
Yes - the MAX322CPA+ logic inputs (IN1 and IN2) tolerate voltages down to V− without damage, and logic-low levels as low as V− are valid. The device defines VIL = V+ − 2.5V, but driving IN1 or IN2 directly to V− remains safe and functional, simplifying interface design in systems with shared ground or negative logic rails.
MAX322CPA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SPST - NO/NC
- 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
MAX322CPA+ FAQ
1.How can I place an order for MAX322CPA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX322CPA+ 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 MAX322CPA+ reliable?
The price and inventory of MAX322CPA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX322CPA+ is usually 5 days.
3.What payment methods are accepted for MAX322CPA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX322CPA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX322CPA+?
MAX322CPA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX322CPA+ 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 MAX322CPA+?
For technical support, including MAX322CPA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX322CPA+ requirements.
6.How does Aetrix verify that MAX322CPA+ is sourced from the original manufacturer or authorized distributors?
All MAX322CPA+ 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 MAX322CPA+ meets industry standards.
7.What is the process for return or replacement of MAX322CPA+?
All MAX322CPA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX322CPA+, 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 MAX322CPA+ part is unused and in its original packaging.
Return procedure for MAX322CPA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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