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Analog Devices Inc./Maxim Integrated MAX320CSA+
- Part No.:
- MAX320CSA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX320CSA+.pdf
- Description:
- IC SWITCH SPST-NOX2 35OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,428
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Product details
Overview
The MAX320CSA+ 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+ datasheet, MAX320CSA+ pinout, MAX320CSA+ application, or MAX320CSA+ equivalent, key selection criteria include guaranteed charge injection ≤5pC, 100pA max off-leakage at +25°C, ESD robustness >2000V per Method 3015.7, and SO-8 packaging with 0°C to +70°C industrial temperature range.
Technical Context
The MAX320CSA+ implements complementary bipolar-CMOS (BiCMOS) switch architecture with integrated level-shifting logic to support true dual-supply analog signal switching from V− to V+. Its break-before-make timing is not implemented-only the MAX322 variant guarantees this feature.
All channels operate bidirectionally with analog signal range spanning full rail-to-rail (V− to V+), and input logic thresholds scale with V+ (VIH = V+ − 1.5V, VIL = V+ − 2.5V). Leakage performance is specified across temperature: <2.5nA max COM on-leakage at +85°C and <100pA typical at +25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 35Ω max at ±5V supplies - ensures minimal signal attenuation and gain error in precision instrumentation paths |
| RON Matching | <2Ω max between channels - critical for matched gain/phase in differential or dual-path signal conditioning |
| Charge Injection | 5pC max - limits voltage glitch on sampled nodes in S/H circuits and ADC front-ends |
| Turn-On/Off Time | tON <150ns, tOFF <100ns - supports multiplexing of audio, video, and fast control signals up to ~3MHz |
| Supply Range | ±3V to ±8V - enables direct interface with legacy ±5V and ±12V systems without level translation |
| ESD Protection | >2000V per Method 3015.7 - provides robust handling margin during board assembly and field service |
| Leakage Current | 100pA max at +25°C - preserves accuracy in high-impedance sensor and reference voltage routing |
Pinout & Package
MAX320CSA+ is housed in an 8-pin SO (Small Outline) package, 3.9mm × 4.9mm body, 1.27mm pitch, JEDEC MS-012AC compliant, rated for 0°C to +70°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply rail | Bipolar supply connection; must be applied before V− and logic/analog signals to prevent latch-up |
| IN1 | Channel 1 logic control input | Active-high control: drives NO1 closed when high (≥V+ − 1.5V); compatible with TTL/CMOS logic levels |
| COM2 | Channel 2 common analog terminal | Bidirectional signal path node; connects to NO2 when IN2 is high; supports rail-to-rail analog swing |
| NO2 | Channel 2 normally open analog terminal | Open-circuit when IN2 low; closed to COM2 when IN2 high; no internal pull-down or pull-up |
| V− | Negative supply rail | Must be ≤0V; clamping diodes protect pins against overvoltage relative to V− and V+ |
| IN2 | Channel 2 logic control input | Independent control of second switch; no inter-channel timing dependency or synchronization requirement |
| COM1 | Channel 1 common analog terminal | Primary signal interface point for first switch; identical electrical behavior to COM2 |
| NO1 | Channel 1 normally open analog terminal | Signal output/input node for first switch; matches NO2 in capacitance (9pF off, 35pF on) and leakage |
Key Features
| Feature | Design Value |
|---|---|
| Low on-resistance flatness | 4Ω max variation over full analog signal range - maintains consistent gain and THD across ±5V inputs |
| Bipolar supply compatibility | Operates natively from ±3V to ±8V - eliminates need for external charge pumps or level shifters in mixed-voltage systems |
| Guaranteed low charge injection | ≤5pC max - reduces settling error and pedestal distortion in precision sampling applications |
| Ultra-low power consumption | 1.25mW typical at ±5V - extends battery life in portable medical, handheld test, and remote sensor devices |
| High off-isolation | 72dB min at 1MHz - suppresses crosstalk between adjacent switched channels in multi-signal routing |
Applications
| Sample-and-Hold Circuits | ±5V DAC/ADC Interfaces |
|---|---|
Use Scenario: Precision acquisition of analog sensor outputs prior to digitization in data loggers and process controllers. IC Role / Device Role / Timing Role: Dual-channel analog switch isolating hold capacitor from input source during sampling phase with sub-150ns switching. Use Value: 5pC max charge injection prevents voltage step errors on hold capacitors, preserving 16-bit effective resolution. |
Use Scenario: Routing reference voltages and analog outputs between dual ±5V DACs and ADCs in automated test equipment. IC Role / Device Role / Timing Role: Bidirectional SPST switch enabling flexible signal path configuration without polarity inversion or level shifting. Use Value: 35Ω max RON and <2Ω matching minimize gain mismatch and offset drift between parallel conversion channels. |
| Battery-Powered Test Equipment | Audio Signal Routing |
Use Scenario: Portable oscilloscope front-end and multimeter analog multiplexing where low power and high accuracy are mandatory. IC Role / Device Role / Timing Role: Low-leakage (100pA), low-RON switch selecting between multiple sensor inputs or calibration references. Use Value: 1.25mW total power enables >100-hour operation on AA batteries while maintaining µV-level measurement integrity. |
Use Scenario: Channel selection and mute control in professional audio mixers and studio monitors operating from ±15V rails. IC Role / Device Role / Timing Role: High-isolation (72dB), low-distortion analog switch routing line-level signals with minimal crosstalk. Use Value: 9pF off-capacitance and 35pF on-capacitance preserve frequency response beyond 20kHz with negligible phase shift. |
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, 12pC charge injection, 16-lead LFCSP | Requires external level-shifting for ±5V systems; better RON but higher charge injection degrades S/H accuracy | Select ADG1421BRMZ only if single-supply operation and ultra-low RON outweigh charge injection and package constraints. |
| TS5A23157DCKR | Single-supply (1.65V–5.5V), 0.9Ω RON, 15pC charge injection, 6-pin SC70 | Not compatible with bipolar supplies; unsuitable for ±5V DAC/ADC or military radio applications requiring rail-to-rail analog swing | TS5A23157DCKR fits space-constrained, low-voltage consumer designs-but cannot replace MAX320CSA+ in dual-supply infrastructure. |
Compared with ADG1421BRMZ and TS5A23157DCKR, the MAX320CSA+ uniquely supports true bipolar operation with guaranteed low charge injection and industrial temperature range in SO-8, making it irreplaceable in legacy ±5V test and measurement systems where signal fidelity and supply simplicity are non-negotiable.
Availability
MAX320CSA+ is available at Aetrix Electronics and suitable for battery-operated systems, sample-and-hold circuits, and ±5V DAC/ADC interfaces requiring stable component supply across industrial temperature grades and long-lifecycle programs.
Supply support for MAX320CSA+ 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 fabless semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.
The MAX320CSA+ belongs to Maxim's precision analog switch product line, engineered specifically for high-accuracy, low-distortion signal routing in dual-supply environments where rail-to-rail analog integrity and low glitch energy are essential.
FAQ
What is the maximum allowable supply voltage range for the MAX320CSA+?
The MAX320CSA+ supports dual-supply operation from ±3V to ±8V, with absolute maximum ratings specifying V+ up to (V− − 0.3V) and +17V, and V− down to (V+ + 0.3V) and −17V. The total supply span (V+ − V−) must not exceed 17V. Operation at ±8V is fully characterized and supported per the datasheet's Electrical Characteristics table.
Does the MAX320CSA+ support break-before-make switching?
No, the MAX320CSA+ does not implement break-before-make functionality. That feature is exclusive to the MAX322 variant (one NO + one NC switch). The MAX320CSA+ contains two independent normally open switches with no timing coordination between channels - each operates autonomously based on its respective INx input.
What is the guaranteed charge injection specification for the MAX320CSA+?
The MAX320CSA+ guarantees ≤5pC maximum charge injection, measured under standard test conditions (CL = 1.0nF, VGEN = 0V, RGEN = 0Ω). This value is confirmed across temperature and is critical for minimizing voltage glitches in sample-and-hold and precision ADC front-end applications using the MAX320CSA+.
Can the MAX320CSA+ be used with single-supply systems?
The MAX320CSA+ is designed for dual-supply operation and is not characterized or recommended for single-supply use. For single-supply analog switching, Maxim specifies the MAX323/MAX324/MAX325 family. Attempting to bias the MAX320CSA+ with V− = GND may violate absolute maximum ratings and result in undefined behavior or damage.
What package type and temperature range does the MAX320CSA+ have?
The MAX320CSA+ is supplied in an 8-pin SO (Small Outline) package, JEDEC MS-012AC compliant, with dimensions 3.9mm × 4.9mm and 1.27mm lead pitch. It is rated for operation from 0°C to +70°C ambient temperature, indicated by the "C" suffix in the ordering code.
MAX320CSA+ 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:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX320CSA+ FAQ
1.How can I place an order for MAX320CSA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX320CSA+ 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+ reliable?
The price and inventory of MAX320CSA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX320CSA+ is usually 5 days.
3.What payment methods are accepted for MAX320CSA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX320CSA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX320CSA+?
MAX320CSA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX320CSA+ 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+?
For technical support, including MAX320CSA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX320CSA+ requirements.
6.How does Aetrix verify that MAX320CSA+ is sourced from the original manufacturer or authorized distributors?
All MAX320CSA+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX320CSA+?
All MAX320CSA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX320CSA+, 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+ part is unused and in its original packaging.
Return procedure for MAX320CSA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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