Analog Devices Inc./Maxim Integrated DG1208ETE+T

Overview

DG1208ETE+T from Maxim Integrated is a low-leakage, single 8-channel analog multiplexer IC used for precision signal routing in high-fidelity data acquisition paths. 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 front-end channel selector in automated test equipment and sample-and-hold systems.

For engineers reviewing the DG1208ETE+T datasheet, DG1208ETE+T pinout, DG1208ETE+T application, or DG1208ETE+T equivalent, key selection criteria include leakage-critical switching performance, bipolar/supply flexibility, GPIO-compatible address decoding (A2/A1/A0), EN-controlled channel enable/disable, and TQFN-16 thermal and layout compatibility.

Technical Context

The DG1208ETE+T implements a single-pole, 8-throw (SP8T) analog switch architecture with three-bit binary address decoding (A2/A1/A0) and active-high enable (EN). All eight normally-open (NO1–NO8) channels connect bidirectionally to a shared common (COM) terminal under digital control.

It operates across ±15V bipolar supplies or +12V single supply with rail-to-rail analog signal handling (VNEG to VPOS), 200MHz -3dB bandwidth, and break-before-make timing of 50ns - enabling low-glitch, fast-settling multiplexing in precision measurement circuits without signal distortion or settling delay penalties.

Key Specifications

Pinout & Package

Package: 4mm × 4mm, 16-lead TQFN (exposed pad), RoHS-compliant, thermal resistance θJA = 40°C/W (4-layer board).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG1208BRUZ and TMUX1208RTER, DG1208ETE+T uniquely balances ultra-low leakage (≤1nA), minimal charge injection (≤0.5pC), and full ±15V bipolar compatibility - making it optimal for high-accuracy, mixed-supply test and measurement platforms where signal fidelity cannot be compromised.

Availability

DG1208ETE+T is available at Aetrix Electronics and suitable for automatic test equipment, precision data acquisition, and sample-and-hold systems requiring stable component supply, long-term industrial lifecycle support, and guaranteed RoHS-compliant sourcing.

Supply support for DG1208ETE+T 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, medical, and communications applications.

The DG1208ETE+T belongs to Maxim's low-leakage analog switch product line, engineered specifically for high-resolution signal routing where charge injection, off-leakage, and on-resistance matching directly impact measurement validity.

FAQ

What is the maximum allowable supply voltage for DG1208ETE+T?

The DG1208ETE+T supports absolute maximum ratings of VPOS to GND = −0.3V to +20.5V and VNEG to GND = −20.5V to +0.3V. For reliable operation, use ±15V bipolar supplies or +12V single supply (with VNEG tied to GND). Exceeding these ranges risks permanent damage, even if within the ±20.5V differential limit.

Does DG1208ETE+T support rail-to-rail analog signal switching?

Yes, DG1208ETE+T supports true rail-to-rail analog signal operation: the analog signal range extends from VNEG to VPOS. With ±15V supplies, signals from −15V to +15V pass unattenuated; with +12V single supply (VNEG = GND), signals from 0V to +12V are fully supported - eliminating need for external level shifters.

How does the EN pin function on DG1208ETE+T?

The EN pin on DG1208ETE+T is an active-high enable input. When EN is driven low (≤0.8V), all eight analog switches disconnect regardless of A2/A1/A0 state. When EN is high (≥2.4V), channel selection follows the 3-bit address inputs. Leaving EN floating is prohibited - it must be actively driven to avoid undefined channel states.

What is the thermal performance of DG1208ETE+T in a 4-layer PCB?

In a 4-layer PCB configuration, DG1208ETE+T (16-TQFN) has a junction-to-ambient thermal resistance (θJA) of 40°C/W and junction-to-case (θJC) of 6°C/W. This allows up to 2000mW continuous power dissipation at TA = +70°C, derating linearly above that temperature - supporting robust operation in compact, thermally constrained industrial modules.

Can DG1208ETE+T be used with 3.3V logic control signals?

Yes, DG1208ETE+T accepts 3.3V logic levels directly: VIH = 2.4V min and VIL = 0.8V max for A2, A1, A0, and EN pins. Its input leakage remains ≤40µA, and no external level-shifting circuitry is required - enabling seamless interface with modern 3.3V microcontrollers and FPGAs without additional components.