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Analog Devices Inc./Maxim Integrated MAX320CSA+T
- Part No.:
- MAX320CSA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX320CSA+T.pdf
- Description:
- IC SWITCH SPST-NOX2 35OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,186
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Product details
Overview
The MAX320CSA+T 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-to-channel RON matching, and 150ns max turn-on time, enabling high-fidelity signal routing in ±5V DAC/ADC interfaces and battery-powered test equipment.
For engineers reviewing the MAX320CSA+T datasheet, MAX320CSA+T pinout, MAX320CSA+T application, or MAX320CSA+T equivalent, key selection criteria include guaranteed charge injection ≤5pC, 100pA max off-leakage at +85°C, break-before-make timing (not applicable-MAX322 only), and SO-8 package compatibility with industrial temperature range (0°C to +70°C).
Technical Context
The MAX320CSA+T implements CMOS-based transmission-gate architecture with back-to-back N- and P-channel MOSFETs per switch, enabling bidirectional analog signal handling across the full ±5V range without distortion. Its logic inputs accept TTL/CMOS-compatible thresholds referenced to V+, supporting direct interfacing with microcontrollers operating at V+ = +5V.
Internal ESD protection exceeds 2000V per Method 3015.7, and supply current remains below 200µA over temperature. The device guarantees monotonic on-resistance flatness (<4Ω) and low leakage (<2.5nA at +85°C), making it suitable for precision sample-and-hold and military radio front-end switching where signal integrity is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 35Ω max at ±5V - ensures minimal voltage drop and gain error in precision signal paths |
| RON Matching | <2Ω between channels - enables matched gain/attenuation in differential or dual-path circuits |
| Charge Injection | 5pC max - limits voltage glitch on sampled nodes in S/H and ADC driver applications |
| Turn-On/Off Time | tON <150ns, tOFF <100ns - supports >5MHz switching in communications and video routing |
| Off-Leakage Current | 100pA max at +25°C, 2.5nA max at +85°C - preserves accuracy in high-impedance sensor interfaces |
| Supply Range | ±3V to ±8V - supports wide-range bipolar operation without level-shifting circuitry |
| ESD Protection | >2000V per Method 3015.7 - provides robust handling in manufacturing and field environments |
Pinout & Package
MAX320CSA+T is housed in an 8-pin SO (Small Outline) package, 3.9mm × 4.9mm body, 1.27mm pitch, RoHS-compliant, rated for 0°C to +70°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - NO1 | Normally Open analog terminal (Channel 1) | Connects to COM1 only when IN1 = logic low; bidirectional signal path |
| 2 - COM1 | Analog common terminal (Channel 1) | Primary signal I/O node; accepts ±5V analog swing with minimal RON variation |
| 3 - IN2 | Logic input (Channel 2) | Active-low control: drives NO2/COM2 connection when pulled low (≤2.5V) |
| 4 - V− | Negative power supply rail | Must be applied before analog signals; clamped to −0.3V below V− internally |
| 5 - V+ | Positive power supply rail | Must be applied before V− and logic/analog signals; supports up to +17V absolute max |
| 6 - COM2 | Analog common terminal (Channel 2) | Independent of COM1; enables dual-channel isolation in multiplexed systems |
| 7 - IN1 | Logic input (Channel 1) | Active-low control synchronized with IN2; no propagation delay mismatch vs. IN2 |
| 8 - NO2 | Normally Open analog terminal (Channel 2) | Switches to COM2 only when IN2 = logic low; identical RON and leakage spec as NO1 |
Key Features
| Feature | Design Value |
|---|---|
| Bipolar supply support | Operates from ±3V to ±8V - eliminates need for charge pumps or level shifters in ±5V systems |
| Low on-resistance flatness | <4Ω over full ±5V analog range - maintains consistent gain/attenuation across signal amplitude |
| Guaranteed charge injection | ≤5pC - reduces settling error in precision S/H and switched-capacitor filter designs |
| Ultra-low leakage | 100pA max at +25°C - preserves DC accuracy in high-Z medical sensor and instrumentation front ends |
| Fast switching with low power | 150ns tON, 1.25mW total - enables high-speed battery-operated portable test gear |
Applications
| Battery-Operated Test Equipment | ±5V Precision Data Acquisition |
|---|---|
|
Use Scenario: Portable multimeter front-end multiplexing of voltage, current, and resistance measurement paths. IC Role / Device Role / Timing Role: Dual SPST analog switch routing sensor signals to shared ADC input while maintaining channel isolation. Use Value: 35Ω RON and <2Ω matching minimize measurement offset and gain errors across ranges. |
Use Scenario: Signal conditioning stage in industrial data loggers interfacing ±5V sensors to SAR ADCs. IC Role / Device Role / Timing Role: Channel-select switch preceding programmable gain amplifier and anti-alias filter. Use Value: 5pC max charge injection prevents step-induced errors during sampling clock edges. |
| Heads-Up Display (HUD) Video Routing | Military Radio Front-End Switching |
|
Use Scenario: Selecting between primary and backup video sources in avionics HUD systems. IC Role / Device Role / Timing Role: Bidirectional analog switch handling composite video (1Vpp) with minimal crosstalk. Use Value: 85dB crosstalk and 72dB off-isolation preserve signal fidelity between RGB or sync paths. |
Use Scenario: Antenna and IF path switching in handheld tactical radios operating across −40°C to +85°C. IC Role / Device Role / Timing Role: RF front-end protection and band selection switch in receive chain. Use Value: 2000V ESD rating and 2.5nA leakage at +85°C ensure reliability in harsh electromagnetic environments. |
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 |
|---|---|---|---|
| ADG1421BRMZ | Single-supply only (±15V max), 1.8Ω typical RON, higher supply current (350µA) | Requires external level-shifting for ±5V logic; better for high-voltage industrial mux | Select when lower RON and higher voltage tolerance outweigh bipolar supply convenience |
| TS5A23157DCKR | Single-supply (1.65V–5.5V), 0.9Ω typical RON, no bipolar capability, 10nA leakage at +85°C | Not suitable for ±5V signal routing; optimized for low-voltage portable audio/video | Choose only for 3.3V/5V-only systems where ultra-low RON and cost are primary drivers |
Compared with ADG1421BRMZ and TS5A23157DCKR, the MAX320CSA+T uniquely supports true bipolar ±5V analog signal switching without external biasing, offers guaranteed 5pC charge injection for precision sampling, and delivers lowest leakage in extended temperature operation - making it the preferred choice for ±5V DAC/ADC interface and military-grade portable instrumentation.
Availability
MAX320CSA+T is available at Aetrix Electronics and suitable for battery-operated test equipment, ±5V precision data acquisition systems, and military radio front-end switching requiring stable component supply across industrial temperature grades.
Supply support for MAX320CSA+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) 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 MAX320CSA+T belongs to Maxim's precision analog switch product line, engineered specifically for low-distortion, low-leakage signal routing in bipolar-supply data conversion and portable instrumentation systems.
FAQ
What is the maximum analog signal voltage range supported by the MAX320CSA+T?
The MAX320CSA+T supports analog signals from V− to V+, i.e., ±5V when powered from ±5V supplies. With absolute maximum ratings allowing V+ up to +17V and V− down to −17V (total 34V), the usable analog range remains bounded by the supply rails - so at ±5V operation, signals from −5V to +5V are fully supported with minimal RON variation. This makes the MAX320CSA+T ideal for ±5V DAC/ADC interfacing without external level shifting.
Does the MAX320CSA+T support break-before-make switching?
No, the MAX320CSA+T does not implement break-before-make functionality. That feature is exclusive to the MAX322 variant (one NO + one NC switch), which guarantees a minimum 2ns delay between channel turn-off and turn-on. The MAX320CSA+T contains two independent normally open switches with no inter-channel timing coordination - each channel operates autonomously based on its respective INx input. Designers requiring BBM must select MAX322CSA+T instead.
What is the guaranteed charge injection specification for the MAX320CSA+T, and why does it matter?
The MAX320CSA+T guarantees ≤5pC maximum charge injection, measured with CL = 1.0nF and RGEN = 0Ω. This parameter directly impacts settling time and accuracy in sample-and-hold circuits and switched-capacitor filters - excessive charge injection causes voltage glitches on high-impedance hold capacitors, degrading effective resolution. At 5pC into a 10nF capacitor, the resulting glitch is just 0.5mV, enabling sub-12-bit accuracy in precision data acquisition systems using the MAX320CSA+T.
Can the MAX320CSA+T operate from a single +5V supply?
No, the MAX320CSA+T requires dual supplies (e.g., +5V and −5V) and is not specified for single-supply operation. Its internal architecture relies on symmetric bipolar rails to bias the transmission gates correctly and maintain low leakage and flat RON. For single-supply alternatives, Maxim recommends the MAX323/MAX324/MAX325 family - these are pin-compatible variants rated for +3V to +15V operation but with different leakage and RON characteristics than the MAX320CSA+T.
What is the thermal performance of the MAX320CSA+T in SO-8 package?
In its 8-pin SO package, the MAX320CSA+T has a thermal resistance θJA of 5.88mW/°C above +70°C, meaning it dissipates up to 471mW continuously at +70°C ambient. At room temperature (25°C), power dissipation remains well below this limit - typical supply current is <200µA per rail, yielding ~1.25mW total. This low self-heating ensures stable RON and leakage performance across the 0°C to +70°C operating range, critical for portable instrumentation where airflow is limited.
MAX320CSA+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:
- 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:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX320CSA+T FAQ
1.How can I place an order for MAX320CSA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX320CSA+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 MAX320CSA+T reliable?
The price and inventory of MAX320CSA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX320CSA+T is usually 5 days.
3.What payment methods are accepted for MAX320CSA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX320CSA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX320CSA+T?
MAX320CSA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX320CSA+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 MAX320CSA+T?
For technical support, including MAX320CSA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX320CSA+T requirements.
6.How does Aetrix verify that MAX320CSA+T is sourced from the original manufacturer or authorized distributors?
All MAX320CSA+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 MAX320CSA+T meets industry standards.
7.What is the process for return or replacement of MAX320CSA+T?
All MAX320CSA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX320CSA+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 MAX320CSA+T part is unused and in its original packaging.
Return procedure for MAX320CSA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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