Analog Devices Inc./Maxim Integrated DG1208EUE+

Overview

DG1208EUE+ from Maxim Integrated is a low-leakage, single 8-channel analog multiplexer IC designed for precision signal routing in high-fidelity data acquisition and test systems. It features 100Ω typical on-resistance, ≤1nA max on/off-leakage at +85°C, ≤0.5pC typical charge injection, and rail-to-rail operation with ±15V bipolar or +12V single supply. It serves as the channel-selecting front-end switch in automatic test equipment (ATE) and sample-and-hold circuits.

For engineers reviewing the DG1208EUE+ datasheet, DG1208EUE+ pinout, DG1208EUE+ application, or DG1208EUE+ equivalent, key selection criteria include leakage-critical analog switching, fast settling (<400ns turn-on), distortion-free measurement capability, GPIO-compatible control inputs, and compatibility with both TSSOP-16 and TQFN-16 footprints.

Technical Context

The DG1208EUE+ implements a single-pole, 8-throw (SP8T) analog switch architecture using three address inputs (A2, A1, A0) to select one of eight bidirectional NOx terminals to connect to the common COM terminal. Its CMOS process enables rail-to-rail analog signal handling across the full ±15V or 0V–+12V supply range.

Enable (EN) logic controls global conduction state: EN = low disables all channels; EN = high activates switching per address decoding. Charge injection (0.5pC typ) and off-capacitance (4pF NO_, 15pF COM_) are minimized to reduce glitch energy and improve settling in high-impedance sampling nodes.

Key Specifications

Pinout & Package

DG1208EUE+ is housed in a 16-lead TSSOP package (4.4mm × 5.0mm body, 0.65mm pitch), RoHS-compliant, with exposed pad unconnected. Thermal resistance θJA = 90°C/W (four-layer board).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG1408BRUZ and TMUX1308PWR, DG1208EUE+ uniquely balances ultra-low charge injection (0.5pC), moderate on-resistance (100Ω), and full ±15V rail-to-rail operation - making it optimal for precision ATE and data acquisition where signal fidelity across wide voltage ranges is non-negotiable.

Availability

DG1208EUE+ is available at Aetrix Electronics and suitable for automatic test equipment systems, data acquisition systems, and sample-and-hold systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for DG1208EUE+ 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 industrial, communications, and computing applications.

The DG1208EUE+ belongs to Maxim's low-leakage analog switch product line, engineered specifically for metrology-grade signal routing where charge injection, leakage, and on-resistance flatness directly impact measurement repeatability.

FAQ

What supply voltages does the DG1208EUE+ support?

The DG1208EUE+ operates with either ±15V bipolar supplies (VPOS = +15V, VNEG = -15V) or a +12V single supply (VNEG tied to GND). It is fully specified across both configurations, supporting rail-to-rail analog signals from VNEG to VPOS. Quiescent current remains at 40μA typical in both modes, and all electrical parameters-including on-resistance, leakage, and charge injection-are guaranteed over the full -40°C to +85°C temperature range under these supply conditions.

How does the DG1208EUE+ handle channel selection and enable control?

The DG1208EUE+ uses three binary address inputs (A2, A1, A0) to select one of eight NOx channels to connect to the common COM terminal. An active-high EN input globally enables or disables the entire switch matrix: when EN is low, all channels are open; when EN is high, the selected channel conducts bidirectionally. The control logic is deterministic-no internal latching or clocking is required-and all address pins accept standard GPIO logic levels (VIH ≥ 2.4V, VIL ≤ 0.8V).

What is the significance of 0.5pC typical charge injection in the DG1208EUE+?

The 0.5pC typical charge injection in DG1208EUE+ directly limits voltage glitch amplitude on hold capacitors in sample-and-hold circuits: for a 1nF capacitor, ΔV = Q/C = 0.5mV. This enables sub-16-bit accuracy without additional correction circuitry. Unlike higher-injection switches, DG1208EUE+ maintains this spec across all switching events and supply conditions, making it suitable for high-resolution data acquisition where hold-step error must remain below 1LSB of a 16-bit system.

Can the DG1208EUE+ be used in audio signal routing applications?

Yes, DG1208EUE+ is qualified for audio routing: THD+N is specified at <0.1% (20Hz–20kHz), off-isolation and crosstalk exceed -80dB at 1MHz, and rail-to-rail operation supports line-level (±2V) and microphone-level signals without clipping. Its 100Ω on-resistance introduces negligible insertion loss, and bidirectional signal flow allows flexible input/output assignment-making DG1208EUE+ suitable for professional mixer, effects loop, and multichannel interface designs.

Is thermal performance documented for the DG1208EUE+ in TSSOP packaging?

Yes, DG1208EUE+ thermal characteristics are fully documented: junction-to-ambient thermal resistance (θJA) is 90°C/W on a four-layer PCB and 106°C/W on a single-layer board. Maximum junction temperature is +150°C, and continuous power dissipation is rated at 888.9mW (four-layer) or 754.7mW (single-layer) at +70°C ambient. These values assume proper PCB layout with recommended land pattern 90-0117 and adequate copper pour under the exposed pad (though EP is left unconnected per datasheet).