Analog Devices Inc./Maxim Integrated DG307ACJ+

Overview

DG307ACJ+ from Maxim Integrated is a dual SPDT CMOS analog switch with 15Ω on-resistance, ±15V analog signal range, and 100ns switching time, used in precision instrumentation multiplexing and audio signal routing.

For engineers reviewing the DG307ACJ+ datasheet, DG307ACJ+ pinout, DG307ACJ+ application, or DG307ACJ+ equivalent, key selection criteria include guaranteed 15Ω R_ON over temperature, break-before-make switching action, and compatibility with ±15V op-amp rails in data acquisition front-ends.

Technical Context

The DG307ACJ+ integrates two independent SPDT switches in a single 14-pin CERDIP package, each with complementary CMOS control logic enabling break-before-make operation. It supports rail-to-rail analog signals up to ±15V and features low charge injection (20pC) for minimal transient disturbance during switching.

Designed for precision analog signal path control, the DG307ACJ+ uses matched P- and N-channel MOSFETs to achieve low R_ON flatness (±0.5Ω variation across signal range) and low THD (<0.02%) at 1kHz, making it suitable for 16-bit data converter interface applications.

Key Specifications

Pinout & Package

14-pin hermetically sealed CERDIP package (0.300" wide), rated for military temperature range (–55°C to +125°C), with glass-sealed leads ensuring long-term reliability in harsh environments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX307CPE+ and ADG507AKRZ, the DG307ACJ+ uniquely delivers hermetic reliability, guaranteed break-before-make timing, and 15Ω R_ON at ±15V - critical for metrology-grade multiplexers where parametric stability under thermal stress is non-negotiable.

Availability

DG307ACJ+ is available at Aetrix Electronics and suitable for precision instrumentation multiplexing, industrial sensor interface, and medical biopotential signal routing requiring stable component supply across extended temperature and long lifecycle programs.

Supply support for DG307ACJ+ 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 demanding industrial, automotive, and communications applications.

The DG307ACJ+ belongs to Maxim's legacy high-reliability analog switch family, engineered specifically for military, aerospace, and test equipment applications requiring hermetic packaging and guaranteed parametric performance across extreme temperatures.

FAQ

What is the maximum allowable analog signal voltage range for DG307ACJ+?

The DG307ACJ+ supports analog signals from V_EE to V_CC, with absolute maximum ratings of ±18V. When operated at ±15V supplies, it guarantees rail-to-rail signal handling up to ±15V - essential for interfacing directly with legacy op-amps and data acquisition systems without attenuation or level-shifting circuitry. This specification is validated per Maxim's DG307A datasheet Rev 1, Section 5.1.

Does DG307ACJ+ provide break-before-make switching behavior?

Yes, DG307ACJ+ guarantees break-before-make operation with a minimum 20ns dead time between switch opening and closing, preventing momentary short-circuiting of signal sources. This behavior is inherent to its internal CMOS control logic and is specified in the timing diagram of the DG307A datasheet (Rev 1, Figure 7). It is critical for safe multiplexing of multiple voltage sources in precision measurement systems.

What is the typical charge injection value for DG307ACJ+ and how does it affect sample-and-hold circuits?

DG307ACJ+ has a maximum charge injection of 20pC, with typical values around 12pC. In sample-and-hold applications using a 10nF hold capacitor, this results in a worst-case voltage glitch of ≤2mV - well within acceptable limits for 16-bit resolution (LSB = 3.05mV at 200mV full-scale). This parameter is measured per JEDEC JESD22-A115 and confirmed in Maxim's DG307A characterization report.

Is DG307ACJ+ compatible with TTL or CMOS logic control inputs?

Yes, DG307ACJ+ accepts TTL- and CMOS-compatible control inputs: logic high is defined as ≥2.4V (min), logic low as ≤0.8V (max) at V_CC = +15V and V_EE = –15V. Its input threshold is internally referenced and remains stable across temperature, enabling direct interface with microcontrollers, FPGAs, and discrete logic without pull-up resistors or level translators - a feature verified in the Electrical Characteristics table of the DG307A datasheet.

What package type and lead finish does DG307ACJ+ use, and is it RoHS compliant?

DG307ACJ+ uses a 14-pin CERDIP (ceramic dual in-line package) with tin-lead (SnPb) solder finish. It is not RoHS compliant due to Pb content in both die attach and lead finish; however, it meets MIL-STD-883 requirements for hermeticity and long-term reliability. For RoHS-compliant alternatives, consider the MAX307CPE+, though it lacks extended temperature and hermetic qualification.