ADG1236YCPZ-500RL7 - Dual SPDT ±15V iCMOS Analog Switch | ADI
MPN: ADG1236YCPZ-500RL7 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.12 | $8.12 |
| 10 | $7.31 | $73.10 |
| 100 | $6.5 | $650.00 |
| 500 | $5.85 | $2,925.00 |
| 1,000 | $5.27 | $5,270.00 |
ADG1236YCPZ-500RL7 Overview
An analog switch is an electronic component that routes or blocks analog signal paths under digital control. Within the signal-chain hierarchy, it belongs to the multiplexer/switch family of interface ICs, sitting between sensors or signal sources and amplifiers, ADCs, or measurement front ends. SPDT switches route one common terminal to one of two throw terminals, enabling source selection, gain-range switching, and redundant-path switchover in precision systems.
Key features include 1.3 pF off capacitance and 3.5 pF on capacitance, which minimize signal distortion in high-frequency and capacitive-sensitive nodes, and 1 pC charge injection that reduces glitches when switching precision sample-and-hold or integrator circuits. The 33 V supply range supports +/-15 V dual-supply and 12 V single-supply operation, and the iCMOS process combines high-voltage CMOS and bipolar technologies for industrial-grade robustness. Logic inputs are 3 V logic-compatible and no VL supply pin is required, simplifying interfacing with low-voltage controllers.
Technically, the iCMOS process allows high-voltage analog handling with low-voltage digital control, so the switch blocks up to +/-15 V signals while the control logic accepts standard 3.3 V or 5 V levels. The monolithic CMOS construction ensures low power and matched switch behavior across both SPDT channels, which switch independently for flexible routing.
Typical applications include automated test equipment (ATE) signal routing, data-acquisition channel selection, precision sample-and-hold circuits, and industrial instrumentation where large-swing signals meet low-glitch switching requirements.
Design consideration: on resistance is approximately 120 ohm typical (190 ohm maximum per DigiKey listing), so account for Ron flatness and voltage drop in high-impedance or precision-gain paths.
This page synthesizes distributor pricing, drop-in alternative analysis, and practical design notes not found in the manufacturer datasheet, with data verified as of 2026-09-10.
Drop-in alternatives for ADG1236YCPZ-500RL7 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ADG1236YCPZ-500RL7 (same form factor and footprint) — differing in Package, RoHS Status, Switch Configuration.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADG1236YCPZ-REEL7
✅ Drop-In📋 Reference alternative (not in catalog)
ADG1436YCPZ-500RL7
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$2.31 / Unit
View Datasheet →ADG1236YCPZ-500RL7 Maximum Ratings & Electrical Characteristics
| Switch Configuration | Dual independently selectable SPDT (2:1) |
| Number of Channels | 2 |
| On Resistance | 120 ohm typ (190 ohm max) |
| Off Capacitance | 1.3 pF |
| On Capacitance | 3.5 pF |
| Charge Injection | 1 pC |
| Supply Range | 33 V (supports +/-15 V dual and 12 V single supply) |
| Logic Compatibility | 3 V logic-compatible, no VL supply required |
| Process Technology | iCMOS (industrial CMOS, high-voltage CMOS + bipolar) |
| Package | 12-lead LFCSP (3 mm x 3 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | Industrial (-40C to +85C) |
| Packing | 500 unit reel (Tape & Reel, -500RL7 suffix) |
| RoHS Status | Compliant |
| Lead Free Status | Lead Free |
| Category | Analog Switches, Multiplexers, Demultiplexers |
ADG1236YCPZ-500RL7 12-lead lfcsp (3 mm x 3 mm) Pin Configuration Guide
Pin configuration for ADG1236YCPZ-500RL7 (12-lead lfcsp (3 mm x 3 mm) package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for ADG1236YCPZ-500RL7.
Refer to the datasheet for full pin configuration.
Typical Applications
ADG1236YCPZ-500RL7 is suitable for 6 applications: Automated Test Equipment (ATE) Signal Routing, Precision Sample-and-Hold Circuits, Industrial Data Acquisition Channel Selection, Gain-Range Switching in Instrumentation Amplifiers, Communication System Redundant Path Switchover, Medical Instrumentation Front Ends.
Automated Test Equipment (ATE) Signal Routing
The ADG1236YCPZ-500RL7 fits ATE signal routing because its iCMOS process passes signals up to +/-15 V while its 1.3 pF off capacitance prevents loading on devices under test during measurement idle states. The dual independently selectable SPDT channels let one IC switch two test paths, doubling routing density versus single SPST solutions. Its 1 pC charge injection limits stimulus glitches when re-routing between DC parametric tests. Placed between the DUT interface and the measurement unit with short trace runs, the 120 ohm typical Ron is acceptable given ATE instruments typically use high-impedance inputs (1 Mohm), producing negligible insertion error.
Recommended
Precision Sample-and-Hold Circuits
The ADG1236 is designed for sample-and-hold acquisition switching: its 1 pC charge injection produces only ~10 microvolts of pedestal error on a 100 pF hold capacitor, and its 1.3 pF off capacitance minimizes droop paths when the switch opens. Operating from +/-15 V supplies, it can acquire signals across the full industrial instrumentation range without clipping. The 3 V-compatible logic allows direct control from a 3.3 V ADC timing controller even though the analog path sits on high-voltage rails. In a typical topology, the switch connects the input buffer to the hold capacitor ahead of a high-input-impedance buffer or ADC, with acquisition time set by Ron (120 ohm typ) times the hold capacitance.
Recommended
Industrial Data Acquisition Channel Selection
In industrial data acquisition systems, the ADG1236YCPZ-500RL7 selects between redundant sensor pairs or between signal and calibration references. Its 33 V supply range accommodates +/-15 V powered analog front ends common in process control, while the iCMOS construction tolerates industrial voltage transients better than standard CMOS switches. The dual SPDT structure lets one part switch both the positive input and the reference leg of a differential channel, maintaining common-mode symmetry. With 190 ohm maximum Ron, designers should buffer high-impedance sensors before the switch, or select source impedances below ~10 kohm so Ron-induced errors stay below 2% of full scale.
Recommended
Gain-Range Switching in Instrumentation Amplifiers
The ADG1236 switches feedback or input resistors to select programmable gains in instrumentation front ends. Its low 3.5 pF on capacitance keeps parasitic pole frequencies high in precision feedback networks, protecting bandwidth and phase margin, while 1 pC charge injection limits switching transients that would otherwise momentarily saturate the amplifier. The +/-15 V supply compatibility matches classic bipolar op-amp rails, allowing the switch to sit directly in high-voltage signal paths. Because Ron is around 120 ohm typical, place the switch in low-current nodes of the gain network and account for Ron in the gain equation, or use it to shunt-select rather than series-select precision resistors.
Recommended
Communication System Redundant Path Switchover
The ADG1236's dual independent SPDT channels provide switchover between primary and redundant signal paths in industrial communication and control equipment. Its 3 V logic-compatible control inputs can be driven directly by a microcontroller supervising the health of the primary path, and the switches change state in microseconds. The +/-15 V signal capability covers high-level industrial signaling standards, and the low off capacitance (1.3 pF) preserves signal integrity on the idle branch. Designers should ensure both throw terminals are terminated to avoid reflections when the common terminal toggles between paths, and verify Ron (190 ohm max) against the channel budget.
Recommended
Medical Instrumentation Front Ends
In medical monitoring and diagnostic equipment, the ADG1236 routes patient-side sensor signals to conditioning amplifiers. The low charge injection (1 pC) is important when switching near sensitive biopotential acquisition nodes, where glitches would otherwise require long settling times before digitization. Its low capacitance preserves high-frequency detail in impedance plethysmography and bioimpedance measurements. Operating at +/-15 V supplies with iCMOS robustness supports defibrillation-protected analog front ends using higher-voltage protection schemes. Ensure patient-safety isolation is handled elsewhere in the system (isolation amplifiers and isolated supplies), as the ADG1236 itself provides switching only, with 120 ohm typical Ron acceptable for buffered electrode signals.
Recommended
Recommended Products Summary
Engineering reference data for ADG1236YCPZ-500RL7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADG1236YCPZ-REEL7 | ADG1436YCPZ-500RL7 |
|---|---|---|---|
| Package | 12-lead LFCSP (3x3 mm) | 12-lead LFCSP (3x3 mm) - same | 12-lead LFCSP (3x3 mm) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices |
| Switch Configuration | Dual SPDT (2:1) | Dual SPDT (2:1) | Dual SPDT (2:1) |
| On Resistance | 120 ohm typ (190 ohm max) | 120 ohm typ (190 ohm max) | ~1 ohm class (much lower) |
| Supply Range | 33 V (+/-15 V dual / 12 V single) | 33 V (+/-15 V dual / 12 V single) | Lower (low-voltage family) |
| Process Technology | iCMOS high-voltage | iCMOS high-voltage | Low-voltage CMOS |
| Reel Quantity | 500 | Different standard reel qty | 500 |
Key Differentiators
- True high-voltage capability with low-voltage control (vs ADG1436YCPZ-500RL7)
- Low charge injection for precision switching (vs ADG1436YCPZ-500RL7)
- Dual independent SPDT channels in one 3x3 mm footprint (vs ADG1236YCPZ-REEL7)
Design Notes
The ADG1236 on resistance is 120 ohm typical and 190 ohm maximum, and Ron varies with analog signal voltage and supply configuration. In precision gain-switching or channel-selection circuits, keep the source impedance at least 100x lower than the downstream node impedance so Ron-induced error stays negligible; for a 10-bit system, a 1 kohm source gives roughly 190/1190 = 16% error if unbuffered - buffer the signal before or after the switch. Also account for Ron flatness across the +/-15 V signal swing in DC-accurate paths.
Place the ADG1236 LFCSP-12 with short, symmetric traces to both throw terminals (SxA/SxB) to keep parasitic capacitance balanced between the selected and idle branches. The 1.3 pF off capacitance is measured at the pin; adjacent trace routing can easily double this, degrading the low-capacitance advantage in high-frequency nodes. Use a solid ground plane under the switch, and route digital control lines away from the analog terminals to prevent control-signal feedthrough during switching transitions.
Do not exceed the 33 V total supply range - with +/-15 V rails the headroom is exactly 30 V plus logic supply margin, so verify transient conditions during power sequencing. Power up the analog supplies before or simultaneously with digital control signals to avoid undefined switch states. Note that the LFCSP exposed construction requires proper land-pattern soldering; inspect for voids under the package as thermal and ground integrity depend on it. The -500RL7 suffix is a 500-unit reel; for prototypes, cut tape may be more economical.
Compliance Information
RoHS compliant and lead free per digichips.com datasheet specification summary and ADI product data. REACH, halogen-free, and conflict-minerals status should be confirmed via official ADI compliance declarations for this order code.
