Analog Devices Inc. ADG333ABRSZ

Overview

ADG333ABRSZ from Analog Devices is a quad single-pole, double-throw (SPDT) analog switch IC designed for precision signal routing in mixed-signal systems. It features 45 Ω maximum on-resistance, 175 ns maximum turn-on time, and ±44 V absolute maximum supply rating. The device operates across −40°C to +85°C and supports dual-supply (±15 V) or single-supply (up to +12 V) configurations, making it suitable for audio multiplexing and test equipment front-end switching.

For engineers reviewing the ADG333ABRSZ datasheet, ADG333ABRSZ pinout, ADG333ABRSZ application, or ADG333ABRSZ equivalent, key selection criteria include break-before-make timing, channel-to-channel crosstalk (85 dB typ), off-isolation (72 dB typ), and rail-to-rail analog signal range - all critical for low-distortion analog path design in portable and industrial instrumentation.

Technical Context

The ADG333ABRSZ implements four independent SPDT switches fabricated on Analog Devices' LC2MOS process, enabling low power dissipation (<0.35 mA max IDD) while maintaining high-speed switching (tON < 175 ns, tOFF < 145 ns) and flat on-resistance over full signal range. Its break-before-make architecture prevents momentary shorting during channel transitions, essential for multiplexer reliability.

All switches support bidirectional conduction with VSS-to-VDD analog signal range (dual supply) or 0 V to VDD (single supply), and exhibit low charge injection (10 pC max) and leakage (±5 nA max), ensuring minimal signal corruption in precision sampling and sensor interface applications.

Key Specifications

Pinout & Package

ADG333ABRSZ is housed in a 20-lead Shrink Small Outline Package (SSOP, RS-20), 7.5 mm × 5.6 mm body size, 0.65 mm lead pitch, with exposed thermal pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad SPDT analog switch applications.

Compared with ADG333ABRZ, ADG333ABRSZ provides 30% smaller PCB area and lower package capacitance, improving high-frequency performance; versus MAX4633ESE+, ADG333ABRSZ delivers superior analog fidelity via lower RON, tighter matching, and guaranteed break-before-make - critical for precision instrumentation.

Availability

ADG333ABRSZ is available at Aetrix Electronics and suitable for audio multiplexing, automated test equipment, and battery-powered instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADG333ABRSZ 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

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.

The ADG333A product line targets precision analog signal routing in instrumentation, medical, and industrial systems, emphasizing low distortion, rail-to-rail operation, and robust switching behavior under real-world supply conditions.

FAQ

What is the maximum supply voltage rating for ADG333ABRSZ?

The ADG333ABRSZ has an absolute maximum VDD-to-VSS rating of +44 V. In dual-supply operation, this allows configurations such as +20 V/−24 V (within individual rail limits of +30 V and −30 V). For single-supply use, VDD may range from +3 V to +30 V with VSS tied to GND. Exceeding these ratings risks permanent damage, as confirmed in the Absolute Maximum Ratings table of the Rev. B datasheet.

Does ADG333ABRSZ support break-before-make switching, and is it guaranteed?

Yes, ADG333ABRSZ guarantees break-before-make operation with a minimum tOPEN of 10 ns under specified test conditions (RL = 300 Ω, CL = 35 pF, VS = 5 V). This timing is inherent to its internal switch driver design and is verified per Figure 18 in the datasheet. It prevents momentary shorting between Sx-A and Sx-B terminals during logic transitions - essential for safe multiplexer operation.

What is the on-resistance temperature coefficient of ADG333ABRSZ?

The ADG333ABRSZ exhibits a monotonic increase in RON with temperature: at ±15 V dual supply, RON rises from ~20 Ω at +25°C to ~45 Ω at +85°C (Figure 7). This behavior is process-inherent and documented across operating temperatures; no separate temperature coefficient value is specified, but the max RON of 45 Ω applies over the full −40°C to +85°C range.

Can ADG333ABRSZ be used with unbalanced dual supplies?

Yes, ADG333ABRSZ supports unbalanced dual supplies - for example, VDD = +20 V and VSS = −5 V - provided VDD-to-GND ≤ +30 V, VSS-to-GND ≥ −30 V, and VDD-to-VSS ≤ +44 V. The analog signal range remains VSS to VDD, and RON/timing performance scales with actual supply magnitudes, as detailed in the Applications Information section of the Rev. B datasheet.

Is the NC pin (Pin 15) on ADG333ABRSZ required to be left floating?

Pin 15 of ADG333ABRSZ is designated NC (No Connect) and is not bonded internally. While the datasheet does not mandate a specific state, Analog Devices recommends leaving it floating or connecting it to GND - never to VDD or VSS - to avoid unintended coupling or noise pickup. This guidance aligns with standard SSOP layout practices for unused pins in precision analog devices.