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Analog Devices Inc./Maxim Integrated MAX4526CSA+
- Part No.:
- MAX4526CSA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4526CSA+.pdf
- Description:
- IC SWITCH SPDT X 2 175OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,400
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Product details
Overview
MAX4526CSA+ from Maxim Integrated is a high-speed phase-reversal analog switch IC configured as a bridge-connected dual SPDT switch for polarity inversion in precision analog signal paths. It operates from ±4.5V to ±18V dual supplies (or +4.5V to +36V single supply), delivers 175Ω max on-resistance with 8Ω matching, <100ns transition time at ±15V, and rail-to-rail signal handling - enabling chopper-stabilized amplifier front-ends requiring low charge injection (10pC max) and guaranteed break-before-make switching.
For engineers reviewing the MAX4526CSA+ datasheet, MAX4526CSA+ pinout, MAX4526CSA+ application, or MAX4526CSA+ equivalent, this device is selected for DC/low-frequency phase reversal where analog symmetry, leakage-limited offset stability (<0.5nA @ +25°C), and TTL/CMOS-compatible control are critical in test equipment, balanced modulators, and self-calibrating data acquisition systems.
Technical Context
The MAX4526CSA+ implements a fully integrated CMOS bridge topology with two normally open and two normally closed switches, enabling true differential signal polarity reversal under single logic control (IN pin). Its internal logic-level translator drives N- and P-channel MOSFET gates with out-of-phase signals referenced to V+ and V−, eliminating ground reference for analog paths.
It features matched on-resistance flatness (12Ω typ), 65dB off-isolation at 1MHz, and 13pF off-capacitance - all specified across −40°C to +85°C operation. The device guarantees break-before-make timing (1–5ns) and supports bipolar supplies up to ±18V (sum ≤44V), with ESD protection >2kV per Method 3015.7.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±4.5V to ±18V dual or +4.5V to +36V single - enables direct interface with ±15V op-amp rails and industrial single-supply systems. |
| On-Resistance (RON) | 175Ω max at ±15V - ensures minimal gain error and thermal drift in precision gain-setting or feedback paths. |
| On-Resistance Match (∆RON) | 8Ω max - maintains amplitude balance between inverted/non-inverted signal paths for <0.1% gain mismatch. |
| Charge Injection | 10pC max - limits voltage glitch on high-impedance nodes (e.g., integrator capacitors), preserving chopper amplifier zeroing accuracy. |
| Transition Time | <100ns at ±15V - supports carrier frequencies up to 100kHz in balanced modulator/demodulator applications. |
| Leakage Current | 0.5nA max @ +25°C - minimizes input bias current errors in picoampere-level sensor interfaces and electrometer circuits. |
| Logic Thresholds | 0.8V to 2.4V - ensures robust TTL/CMOS compatibility without level-shifting across supply voltages from 4.5V to 36V. |
Pinout & Package
MAX4526CSA+ is housed in an 8-pin µMAX package (3.05mm × 3.05mm × 0.95mm), pin-compatible with SO and DIP variants but optimized for space-constrained PCB layouts with improved thermal resistance (derate 4.1mW/°C above +70°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A) | Analog input terminal A | Connected to Y when IN = LOW; to X when IN = HIGH - forms one half of the phase-reversal pair with B. |
| 2 (B) | Analog input terminal B | Connected to X when IN = LOW; to Y when IN = HIGH - complementary path to A for balanced signal routing. |
| 3 (GND) | Digital ground reference | Reference for logic inputs only; analog paths are floating between V+ and V− - requires separation from analog ground planes. |
| 4 (IN) | Logic control input | TTL/CMOS-compatible digital signal controlling phase state; accepts voltages down to V− (e.g., −15V) with no clamping diode to GND. |
| 5 (V−) | Negative analog supply | Sets lower analog signal limit; tied to GND for single-supply operation - internal ESD diodes conduct if analog signals exceed V−. |
| 6 (Y) | Analog output terminal Y | Output node for inverted or non-inverted signal depending on IN state; bidirectional with full rail-to-rail capability. |
| 7 (X) | Analog output terminal X | Complementary output to Y; AC symmetry optimized when X/Y are outputs and A/B are inputs per layout guidance. |
| 8 (V+) | Positive analog/digital supply | Powers analog switches and internal logic; internally connected to substrate - must be bypassed with 0.1µF ceramic capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Analog signals swing from V− to V+ without clipping - supports full dynamic range of ±15V op-amps and ADC drivers. |
| Guaranteed break-before-make | 1–5ns minimum delay prevents momentary short-circuit between X and Y during switching - essential for avoiding signal transients in feedback loops. |
| 10pC max charge injection | Minimizes voltage step on high-Z nodes (e.g., 10nF integrators), limiting chopper amplifier offset error to <100µV per switch event. |
| 2pC max charge-injection match | Ensures matched transient glitches between A-X/B-Y paths - critical for common-mode rejection in differential chopper topologies. |
| >2kV ESD protection | Robustness against handling and board-level ESD events per Method 3015.7 - reduces field failure risk in test equipment and lab instrumentation. |
| 8-pin µMAX package | 3.05mm × 3.05mm footprint with exposed pad option - enables compact placement near precision op-amps while maintaining thermal performance (330mW max @ +70°C). |
Applications
| Chopper-Stabilized Amplifiers | Balanced Modulators/Demodulators |
|---|---|
|
Use Scenario: Front-end switching stage in auto-zeroing op-amps that alternately sample and null input offset voltage. IC Role / Device Role / Timing Role: Phase-reversal analog switch providing synchronous polarity inversion of differential input signals at 1–10kHz chopping frequency. Use Value: Enables sub-µV offset stability via matched RON and ultra-low charge injection, directly improving DC accuracy without external trimming. |
Use Scenario: Carrier-synchronous signal modulation in precision measurement systems using square-wave carriers up to 100kHz. IC Role / Device Role / Timing Role: Balanced analog switch acting as a polarity-reversing mixer core, driven by logic-level carrier applied to IN pin. Use Value: Delivers >65dB carrier suppression due to matched on-resistance and low capacitance imbalance, reducing harmonic distortion in demodulated outputs. |
| Data Acquisition Systems | Audio-Signal Routing |
|
Use Scenario: Input multiplexing and polarity selection in 16-bit+ SAR or delta-sigma ADC front-ends for sensor calibration sequences. IC Role / Device Role / Timing Role: Precision analog switch enabling programmable gain/phase configuration before programmable-gain amplifiers or instrumentation amps. Use Value: Maintains linearity (0.001% THD) and low leakage (<10nA @ +85°C) across temperature, ensuring stable calibration coefficients over life. |
Use Scenario: Polarity-selectable routing in professional audio summing mixers or balanced line drivers requiring phase inversion for mono compatibility. IC Role / Device Role / Timing Role: Bidirectional analog switch supporting symmetrical signal flow between X/Y and A/B pins with identical forward/reverse RON. Use Value: Preserves wideband fidelity (flat response to 1MHz) and channel balance (<0.1dB gain match) without introducing ground-loop artifacts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar phase-reversal analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4527CSA+ | Identical analog switch architecture and RON/leakage specs, but slower transition time (250ns vs. <100ns) and lower supply current (1µA vs. 1.5mA @ +25°C). | Optimized for battery-powered or low-power chopper systems where speed is secondary to quiescent current. | Select MAX4527CSA+ only when transition time >200ns is acceptable and supply current must stay below 2µA. |
| ADG1419BRMZ | Single-pole double-throw (SPDT) switch with 1.5Ω RON and 1.5pC charge injection, but lacks integrated bridge topology - requires external wiring for phase reversal. | Used in high-precision, low-RON applications where discrete bridge implementation is acceptable and board area permits extra passives. | Choose ADG1419BRMZ only when ultra-low on-resistance (<2Ω) and charge injection (<2pC) outweigh the need for monolithic phase-reversal integration. |
Compared with MAX4527CSA+, the MAX4526CSA+ provides 2.5× faster switching for higher chopper frequencies, while ADG1419BRMZ offers lower RON and charge injection but demands external circuitry to achieve phase reversal - making MAX4526CSA+ optimal for space- and timing-critical monolithic implementations.
Availability
MAX4526CSA+ is available at Aetrix Electronics and suitable for chopper-stabilized amplifiers, balanced modulators, and precision data acquisition systems requiring stable component supply, long-term manufacturability, and guaranteed parametric performance across −40°C to +85°C.
Supply support for MAX4526CSA+ 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 power management ICs for industrial, medical, and test equipment applications - emphasizing low noise, high accuracy, and robust reliability.
The MAX4526/MAX4527 product line was engineered specifically for DC and low-frequency phase-reversal tasks in chopper amplifiers and balanced modulators, prioritizing analog symmetry, low leakage, and monolithic bridge integration over general-purpose switching.
FAQ
What is the operating temperature range for MAX4526CSA+?
The MAX4526CSA+ is rated for operation from −40°C to +85°C. This extended industrial temperature range ensures reliable performance in demanding environments such as automated test equipment and industrial data loggers. All key specifications - including on-resistance, leakage current, and transition time - are guaranteed across this full range, with typical values characterized at +25°C.
Can MAX4526CSA+ operate from a single supply?
Yes, MAX4526CSA+ supports single-supply operation from +4.5V to +36V by connecting V− to GND. In this configuration, analog signals swing from 0V to V+, and the logic input (IN) remains compatible with TTL/CMOS levels. However, bipolar supply operation (±4.5V to ±18V) is recommended for optimal AC symmetry and chopper amplifier performance, as factory characterization was performed at ±15V.
What does "guaranteed break-before-make" mean for MAX4526CSA+?
Guaranteed break-before-make in MAX4526CSA+ means the internal switches physically disconnect one path (e.g., A–X) before connecting the alternate path (A–Y), with a minimum 1ns delay between break and make events. This prevents momentary short-circuits between X and Y terminals, eliminating signal transients in sensitive feedback networks - a critical requirement in chopper amplifier integrator stages.
How is charge injection specified for MAX4526CSA+, and why does it matter?
MAX4526CSA+ specifies maximum charge injection as 10pC, measured with CL = 1.0nF and RS = 0Ω. This parameter quantifies the unwanted voltage glitch induced on high-impedance nodes (e.g., integrator capacitors) during switching. In chopper-stabilized amplifiers, low charge injection directly determines residual offset error after auto-zero cycles - making this spec essential for sub-microvolt DC precision.
Is MAX4526CSA+ pin-compatible with other packages in the MAX4526 family?
Yes, MAX4526CSA+ shares identical pinout and functionality with MAX4526CPA (8-pin DIP) and MAX4526CUA (8-pin µMAX), differing only in package type and thermal characteristics. All three variants use the same 8-pin configuration (A, B, GND, IN, V−, Y, X, V+) and support identical electrical operation - enabling drop-in replacement during prototyping or redesign based on board space and thermal requirements.
MAX4526CSA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 175Ohm
- Channel-to-Channel Matching (ΔRon):
- 500mOhm
- Voltage - Supply, Single (V+):
- 4.5V ~ 36V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 18V
- Switch Time (Ton, Toff) (Max):
- -
- -3db Bandwidth:
- -
- Charge Injection:
- 1pC
- Channel Capacitance (CS(off), CD(off)):
- 13pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX4526CSA+ FAQ
1.How can I place an order for MAX4526CSA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4526CSA+ 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 MAX4526CSA+ reliable?
The price and inventory of MAX4526CSA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4526CSA+ is usually 5 days.
3.What payment methods are accepted for MAX4526CSA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4526CSA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4526CSA+?
MAX4526CSA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4526CSA+ 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 MAX4526CSA+?
For technical support, including MAX4526CSA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4526CSA+ requirements.
6.How does Aetrix verify that MAX4526CSA+ is sourced from the original manufacturer or authorized distributors?
All MAX4526CSA+ 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 MAX4526CSA+ meets industry standards.
7.What is the process for return or replacement of MAX4526CSA+?
All MAX4526CSA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4526CSA+, 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 MAX4526CSA+ part is unused and in its original packaging.
Return procedure for MAX4526CSA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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