Analog Devices Inc./Maxim Integrated DG1209ETE+T

Overview

DG1209ETE+T from Maxim Integrated is a dual 4-channel analog multiplexer IC designed for precision signal routing in high-fidelity data acquisition and test systems. It features rail-to-rail operation with ±15V bipolar or +12V single supply support, ≤1nA max on/off-leakage at +85°C, 0.5pC typical charge injection, and 250MHz -3dB bandwidth-enabling low-glitch, fast-settling switching in differential signal paths.

For engineers reviewing the DG1209ETE+T datasheet, DG1209ETE+T pinout, DG1209ETE+T application, or DG1209ETE+T equivalent, this page delivers verified specifications, dual-channel control logic, thermal resistance data for 16-TQFN, real-world leakage and bandwidth performance under both supply configurations, and validated alternatives for differential multiplexing designs.

Technical Context

The DG1209ETE+T implements two independent 4:1 analog multiplexers (A-side and B-side), each selecting one of four bidirectional NOx inputs to its respective COM terminal using A1/A0 address lines. EN enables or disables both banks simultaneously, with all channels off when EN is low.

Its architecture supports true rail-to-rail analog signal handling across VNEG to VPOS, with matched on-resistance (≤30Ω max ΔRON) and ultra-low charge injection (0.5pC typ) critical for sample-and-hold accuracy. The device maintains ≤80dB off-isolation and crosstalk across 1MHz, verified under both ±15V and +12V supply conditions.

Key Specifications

Pinout & Package

Package: 16-pin TQFN (4mm × 4mm, exposed pad), RoHS-compliant, rated for -40°C to +85°C operation. Thermal resistance θJA = 40°C/W (4-layer board).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual 4-channel analog multiplexing applications.

Compared with DG1209ETE+T, ADG1419 offers lower on-resistance but lacks bipolar supply capability and exhibits higher charge injection (1.5pC), while TMUX1309 provides 1.8V logic compatibility at the cost of significantly higher leakage-making DG1209ETE+T the optimal choice for high-accuracy, dual-supply, differential multiplexing where leakage and charge injection are critical.

Availability

DG1209ETE+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 manufacturability, and guaranteed RoHS compliance.

Supply support for DG1209ETE+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 demanding industrial, medical, and test & measurement applications.

The DG1209ETE+T belongs to Maxim's low-leakage analog switch family, engineered specifically for high-fidelity signal routing where charge injection, leakage, and bandwidth directly impact measurement accuracy in automated test and data acquisition systems.

FAQ

What supply voltages does the DG1209ETE+T support?

The DG1209ETE+T operates with ±15V bipolar supplies or a +12V single supply. In single-supply mode, VNEG must be connected to GND. Its rail-to-rail architecture allows analog signals to swing from VNEG to VPOS, supporting full-range signal capture in both configurations. Quiescent current remains low (40–90µA) across these supply options.

How does the DG1209ETE+T handle differential signal routing?

The DG1209ETE+T integrates two independent 4:1 multiplexers (A-side and B-side) with synchronized address decoding via shared A1/A0 inputs. This enables simultaneous selection of matched differential pairs-e.g., NO1A/NO1B routed to COMA/COMB-eliminating timing skew and ensuring balanced signal paths critical for noise rejection in precision ADC interfaces.

What is the maximum leakage current specification for DG1209ETE+T at elevated temperature?

The DG1209ETE+T guarantees ≤1nA maximum on- and off-leakage current at +85°C, verified across both ±15V and +12V supply conditions. This ultra-low leakage is essential for high-impedance sensor interfaces (e.g., pH electrodes, piezoresistive elements) where even nanoamp-level currents cause measurable offset drift or integration errors.

Can DG1209ETE+T be used in sample-and-hold circuits, and why?

Yes, DG1209ETE+T is explicitly optimized for sample-and-hold applications due to its 0.5pC typical charge injection, which minimizes voltage glitch on hold capacitors, and ≤1nA leakage, which prevents discharge-induced droop. Its matched on-resistance (≤30Ω ΔRON) ensures consistent settling behavior across differential paths, preserving linearity in high-resolution acquisition.

What package type and thermal characteristics apply to DG1209ETE+T?

DG1209ETE+T uses a 4mm × 4mm 16-pin TQFN package with exposed pad. On a 4-layer PCB, its junction-to-ambient thermal resistance (θJA) is 40°C/W, and junction-to-case (θJC) is 6°C/W. These values enable reliable operation up to +85°C ambient without forced airflow, supporting compact, fanless industrial instrumentation designs.