Analog Devices Inc./Maxim Integrated DG441DJ+

Overview

DG441DJ+ from Maxim Integrated is a quad, normally closed (NC), single-pole/single-throw (SPST) analog switch IC designed for precision signal routing in rail-to-rail, bipolar or single-supply systems. It delivers 85Ω max on-resistance, 4Ω max on-resistance matching between channels, <5nA off-leakage at +85°C, 10pC max charge injection, and operates from ±4.5V to ±20V or +10V to +30V supplies-enabling use in battery-operated test equipment and military radios.

For engineers reviewing the DG441DJ+ datasheet, DG441DJ+ pinout, DG441DJ+ application, or DG441DJ+ equivalent, key selection criteria include guaranteed r_DS(ON) flatness (9Ω max), TTL/CMOS logic compatibility, ESD tolerance (2000V min), low power consumption (1.65mW), and -40°C to +85°C industrial temperature rating.

Technical Context

The DG441DJ+ implements four independent NC SPST switches using a 44V silicon-gate process, supporting bidirectional analog signal conduction with rail-to-rail voltage handling up to ±15.5V on source/drain terminals. Its logic interface accepts standard TTL/CMOS input levels (0.8V/2.4V thresholds) and drives internal gate control without external level shifting.

Switching performance is characterized by t_ON < 250ns and t_OFF < 170ns under ±15V supplies, with dynamic parameters including 60dB crosstalk rejection and -100dB off-isolation rejection ratio at 1MHz-critical for high-fidelity audio-signal routing and sample-and-hold circuits where channel-to-channel interference must be minimized.

Key Specifications

Pinout & Package

DG441DJ+ is supplied in a 16-pin plastic DIP package with through-hole mounting. Pin 1 is S1 (Source 1), pin 2 is V−, pin 3 is GND, pin 4 is S4, pin 5 is D4, pin 6 is IN4, pin 7 is IN3, pin 8 is D3, pin 9 is S3, pin 10 is N.C., pin 11 is V+, pin 12 is S2, pin 13 is D2, pin 14 is IN2, pin 15 is IN1, and pin 16 is D1. All IN pins accept TTL/CMOS logic; S/D pins handle bidirectional analog signals up to ±15.5V.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG441BRZ and TS5A23157DCUR, DG441DJ+ uniquely combines industrial temperature rating, bipolar supply flexibility, guaranteed r_DS(ON) matching, and sub-10pC charge injection-making it the only option qualified for high-accuracy, wide-dynamic-range analog switching in harsh environments.

Availability

DG441DJ+ is available at Aetrix Electronics and suitable for test equipment signal routing, audio-signal switching, and sample-and-hold circuits requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for DG441DJ+ 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 high-performance analog, mixed-signal, and power management ICs for industrial, automotive, communications, and computing applications.

The DG441DJ+ belongs to Maxim's precision analog switch product line, engineered specifically for low-distortion, low-leakage signal routing in demanding test, military, and instrumentation systems where reliability and parameter consistency are critical.

FAQ

What is the maximum analog signal voltage range supported by DG441DJ+?

DG441DJ+ supports rail-to-rail analog signals up to ±15.5V when operated with ±15V supplies, and up to +10.5V with a +12V single supply. The absolute maximum analog voltage at S or D pins is limited to (V+ + 0.3V) and (V− − 0.3V), per Absolute Maximum Ratings. Exceeding these clamps the signal via internal diodes and risks damage if current exceeds 30mA.

Does DG441DJ+ require external pull-up or pull-down resistors on its IN pins?

No, DG441DJ+ does not require external pull-up or pull-down resistors on IN1–IN4. Its TTL/CMOS-compatible inputs have defined thresholds (0.8V low, 2.4V high) and internal biasing that ensure reliable logic recognition across the full industrial temperature range. External resistors may be added only for fail-safe state control during power-up sequencing.

How does the DG441DJ+ differ from the DG442DJ+ in functionality?

DG441DJ+ contains four normally closed (NC) SPST switches-conducting when logic input is low-and DG442DJ+ contains four normally open (NO) SPST switches-conducting when logic input is high. Both share identical electrical specs (r_DS(ON), leakage, charge injection), package, and temperature rating, but their logic polarity is inverted. System design must account for this inversion in control firmware and timing diagrams.

Can DG441DJ+ operate with unbalanced supply voltages such as +24V and -5V?

Yes, DG441DJ+ supports unbalanced supplies like +24V and -5V, provided the difference between V+ and V− does not exceed +44V and both remain within Absolute Maximum Ratings (V+ ≤ 44V referenced to V−, GND ≤ 25V referenced to V−). Analog signal range adjusts accordingly: maximum swing becomes -5V to +24V minus internal headroom (~1V), yielding ~28V total range.

Is the exposed pad (EP) present in the DG441DJ+ package?

No, the exposed pad (EP) is exclusive to the Thin QFN-EP package variant (e.g., DG441ETE). DG441DJ+ uses a 16-pin plastic DIP package with no exposed pad. The EP designation applies only to surface-mount QFN versions; DIP variants rely on lead-frame thermal conduction and do not require pad connection or grounding.