Analog Devices Inc. ADG5462FBRUZ-RL7

Overview

ADG5462FBRUZ-RL7 from Analog Devices is a quad-channel, user-configurable overvoltage-protected analog switch with 10 Ω typical on-resistance, ±55 V fault protection on source pins (S1–S4), and integrated fault detection via FF flag output. It operates from ±5 V to ±22 V dual supply or 8 V to 44 V single supply, and is used in industrial data acquisition systems where signal path integrity must be maintained under miswiring or power sequencing faults.

For engineers reviewing the ADG5462FBRUZ-RL7 datasheet, ADG5462FBRUZ-RL7 pinout, ADG5462FBRUZ-RL7 application, or ADG5462FBRUZ-RL7 equivalent, key selection criteria include its user-defined POSFV/NEGFV fault thresholds, 460 ns overvoltage response time (±15 V), latch-up immunity, and 4 kV HBM ESD rating - all critical for ruggedized analog front-end design.

Technical Context

The ADG5462FBRUZ-RL7 implements trench-isolated channel protectors placed in series with each analog signal path (Sx to Dx), enabling bidirectional operation and blocking input overvoltages up to ±55 V relative to ground - both when powered and unpowered. Its protection level is set by externally applied secondary supplies (POSFV and NEGFV), independent of primary VDD/VSS rails.

Fault detection is implemented via the FF digital output pin, which asserts low during any Sx overvoltage event, while DR pin control determines whether the affected drain (Dx) is pulled to POSFV or NEGFV during fault. Threshold voltage VT is fixed at 0.7 V typ, ensuring consistent turn-off behavior across temperature and supply conditions.

Key Specifications

Pinout & Package

ADG5462FBRUZ-RL7 is packaged in a 16-lead TSSOP (RU-16) with exposed pad. Pin 1 = NEGFV, Pin 2 = D1, Pin 3 = S1, Pin 4 = VSS, Pin 5 = GND, Pin 6 = S4, Pin 7 = D4, Pin 8 = DR, Pin 9 = NIC, Pin 10 = D3, Pin 11 = S3, Pin 12 = FF, Pin 13 = VDD, Pin 14 = S2, Pin 15 = D2, Pin 16 = POSFV. Exposed pad must be soldered to VSS for thermal and reliability compliance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar overvoltage-protected analog switch applications.

Compared with ADG5462FBRUZ-RL7, ADG5412FBRUZ-RL7 offers identical protection but omits DR-controlled fault clamping, while MAX14662ETE+ trades configurability for lower cost and single-supply simplicity - making ADG5462FBRUZ-RL7 the only option supporting user-defined ±55 V thresholds with active fault response in dual- or single-supply systems.

Availability

ADG5462FBRUZ-RL7 is available at Aetrix Electronics and suitable for analog input modules, process control systems, and data acquisition requiring stable component supply across extended temperature ranges (−40°C to +125°C) and long-lifecycle industrial programs.

Supply support for ADG5462FBRUZ-RL7 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 is a global leader in high-performance analog, mixed-signal, and DSP technologies, serving industrial, automotive, communications, and aerospace markets with precision signal processing solutions.

The ADG5462F product line delivers fault-protected analog switching for harsh-environment signal chains, designed specifically to eliminate external protection components while maintaining nanovolt-level signal integrity in data acquisition and control systems.

FAQ

What is the maximum continuous current per channel for ADG5462FBRUZ-RL7?

The ADG5462FBRUZ-RL7 supports up to 83 mA continuous current per channel at 25°C in TSSOP package when the signal is biased within VSS + 4.5 V to VDD − 4.5 V. At +125°C, this derates to 39 mA. The LFCSP variant supports higher current (152 mA at 25°C) due to lower thermal resistance (θJA = 30.4°C/W). These values are specified in Table 5 of the ADG5462F datasheet Rev. C.

Does ADG5462FBRUZ-RL7 require external power supply sequencing?

No - ADG5462FBRUZ-RL7 provides power-off protection, meaning it blocks ±55 V faults on Sx pins even when VDD and VSS are unpowered or floating. This eliminates dependency on strict supply ramp ordering, making it ideal for systems where primary and secondary supplies may power up/down asynchronously.

How does the DR pin affect fault behavior in ADG5462FBRUZ-RL7?

When DR is driven low, the affected drain pin (Dx) is actively pulled to either POSFV or NEGFV depending on which fault threshold was exceeded. If DR is left floating or tied to VDD, Dx remains in high-impedance state during fault. This selective clamping capability is unique to ADG5462FBRUZ-RL7 and enables controlled fault current routing in safety-critical systems.

Can ADG5462FBRUZ-RL7 operate with asymmetric dual supplies?

Yes - ADG5462FBRUZ-RL7 supports asymmetric dual supplies as long as VDD − VSS ≤ 48 V and both rails remain within absolute maximum ratings (VDD to GND ≤ +48 V, VSS to GND ≥ −48 V). For example, VDD = +20 V and VSS = −5 V is valid, enabling custom fault threshold alignment in mixed-voltage systems.

What is the role of the NIC pin (Pin 9) on ADG5462FBRUZ-RL7?

Pin 9 is Not Internally Connected (NIC) and must remain unconnected in the ADG5462FBRUZ-RL7 TSSOP layout. It serves no electrical function and has no internal bond wire or silicon connection. Leaving it floating poses no risk, but routing traces or vias to it is unnecessary and may compromise mechanical reliability.