Vishay Siliconix DG612DJ

Overview

DG612DJ from Vishay Siliconix is a high-speed, low-glitch quad SPST analog switch IC designed for precision signal routing in fast-switching systems. It features 12 ns turn-on time, 18 Ω on-resistance, ±2 pC charge injection, 500 MHz bandwidth, and operates from ±3 V to ±10.5 V dual supplies or 5–21 V single supply - used in pixel-rate video switching and DAC deglitching.

For engineers reviewing the DG612DJ datasheet, DG612DJ pinout, DG612DJ application, or DG612DJ equivalent, key selection criteria include guaranteed low charge injection for sample-and-hold accuracy, rail-to-rail analog signal range (V− to V+ − 5 V), logic-level compatibility (VIH ≥ 4 V, VIL ≤ 1 V), and SOIC-16/DIP-16 package thermal derating above 75 °C.

Technical Context

The DG612DJ implements four independent SPST switches using Vishay's proprietary D/CMOS process, integrating n-channel DMOS FETs with low-power CMOS control logic and on-chip level translators. Each channel conducts bidirectionally when enabled and blocks up to 16 V_p-p when off.

Its architecture minimizes parasitic capacitance (C_S(on) = 10 pF, C_D(off) = 2 pF) and charge injection (±2 pC typ.) to suppress switching transients - critical for fast sample-and-hold and synchronous demodulator circuits where aperture uncertainty and step error must be sub-nanosecond and sub-millivolt.

Key Specifications

Pinout & Package

DG612DJ is supplied in a 16-pin plastic DIP package (JEDEC MS-012), 10.0 mm × 4.0 mm footprint, 3.81 mm height, with 2.54 mm lead pitch. Pin 1 is top-left corner (notch side), leads are tin-lead (non-RoHS compliant unless -E3 suffix).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4612CPD+ and ADG1412BRUZ, DG612DJ uniquely balances sub-15 ns speed, ±2 pC charge injection, and true dual-supply operation - making it irreplaceable in fast bipolar sample-and-hold and sync-locked video routing where both timing fidelity and analog headroom are non-negotiable.

Availability

DG612DJ is available at Aetrix Electronics and suitable for fast sample-and-hold circuits, pixel-rate video switching, and DAC deglitching requiring stable component supply across industrial temperature ranges (−40 °C to +85 °C).

Supply support for DG612DJ 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

Vishay Siliconix is a global semiconductor manufacturer specializing in discrete components, analog switches, and power management devices with emphasis on high-reliability, high-speed, and low-noise performance.

The DG612DJ belongs to Vishay's high-speed D/CMOS analog switch family, engineered specifically for applications demanding minimal switching transients, wide bandwidth, and robust dual-supply operation in test equipment, video infrastructure, and precision instrumentation.

FAQ

What is the maximum analog signal voltage range supported by DG612DJ?

DG612DJ supports an analog signal range from V− to (V+ − 5 V) - for example, with V+ = 15 V and V− = −3 V, the valid analog span is −3 V to +10 V. This rail-to-rail capability with 5 V headroom ensures safe operation without clamping when driven within spec, and is confirmed in the Recommended Operating Range table (page 3) and Specification table (page 4) of Vishay document 70057.

Does DG612DJ require separate logic and analog ground connections?

Yes, DG612DJ uses dedicated GND (pin 11) for logic reference and VL (pin 12) for logic supply, while analog signals route through S/D pins referenced to V+ and V−. The datasheet specifies that GND serves as the reference for VIN and VL, and recommends separating logic and analog grounds to minimize noise coupling - critical for maintaining <2 pC charge injection performance in precision applications.

Can DG612DJ operate from a single 5 V supply?

Yes, DG612DJ supports single-supply operation with V+ = 5 V to 21 V and V− tied to GND (0 V). In this configuration, the analog signal range becomes 0 V to (V+ − 5 V), e.g., 0–0 V at V+ = 5 V (invalid), or 0–7 V at V+ = 12 V. The device remains fully functional with VIH ≥ 4 V and VIL ≤ 1 V, and all dynamic specs (t_ON, R_DS(on), bandwidth) are guaranteed per the Unipolar Supplies table (page 5) of document 70057.

What is the thermal derating behavior of DG612DJ in plastic DIP package?

DG612DJ in 16-pin plastic DIP has a power dissipation limit of 470 mW at ≤75 °C, derating linearly at 6 mW/°C above that temperature. At 100 °C ambient, allowable power drops to 320 mW. This derating is specified in Absolute Maximum Ratings (page 3) and applies regardless of supply configuration - users must calculate worst-case I²R losses across all four channels and ensure junction temperature stays within −40 °C to +85 °C operating range.

How does DG612DJ differ from DG611DJ and DG613DJ?

DG612DJ is the complement of DG611DJ: both are quad SPST switches, but DG612DJ turns ON with logic HIGH (IN = ≥4 V) and OFF with logic LOW (IN = ≤1 V), whereas DG611DJ is inverted. DG613DJ differs structurally - it integrates two normally-open and two normally-closed switches for configurable SPST/SPDT/DPDT use, unlike the fixed-logic DG612DJ. These distinctions are defined in the Truth Tables (pages 2–3) and Functional Block Diagrams (pages 2–3) of document 70057.