Analog Devices Inc. ADG1208YRZ

ADG1208YRZ Product Summary

The Analog Devices ADG1208YRZ is a high-voltage, low-leakage analog CMOS multiplexer, offering robust performance in applications requiring precision signal routing. Belonging to the ADG1208 series, this device implements an 8:1 channel configuration, enabling one of eight inputs to be switched to a single output, with operation governed by a 3-bit binary address. The device is available in a space-efficient 16-lead SOIC package, and supports both single and dual supply voltages, making it versatile for design engineers seeking high reliability with flexibility in power supply arrangements.

Main Features and Technological Advantages of ADG1208YRZ

At the heart of the ADG1208YRZ is its iCMOS process technology, a combination of high-voltage CMOS and bipolar techniques. This allows the ADG1208YRZ to operate with supply voltages up to ±15 V (dual supply) or +12 V (single supply), offering compatibility with both legacy and modern systems. The device boasts ultralow on-state resistance (200 Ω max under dual supply), excellent channel-to-channel matching, and ultralow off-leakage currents, ensuring signal integrity across a wide temperature range.

Fast switching is assured with maximum switch times of 95 ns (on) and 100 ns (off), and a -3 dB bandwidth stretching to 550 MHz. Key analog switch attributes include minimal charge injection—0.4 pC typical—significant for sample-and-hold precision or fast data acquisition. The ADG1208YRZ is also designed for rail-to-rail analog operation, break-before-make switching to prevent signal overlap, and high off-isolation for demanding mixed-signal circuits.

ADG1208YRZ Operational Structure

Functionally, the ADG1208YRZ features a straightforward and reliable architecture for single-ended multiplexing. Input selection is managed through three logic address lines (A0, A1, A2), plus an enable (EN) pin; when disabled, all switches are off, effectively isolating channels. Each ‘source’ terminal (S1 through S8) can function as input or output, with the common drain (D) providing access to the selected channel.

The 16-lead SOIC pinout offers an intuitive mapping that simplifies PCB layout and integration in tightly packed designs. The device supports both bidirectional signal flow and full analog voltage swing up to the supply rails, simplifying circuit design and enhancing compatibility with a range of analog and mixed-signal systems.

ADG1208YRZ Electrical Characteristics

Under typical dual-supply operation (±15 V), the ADG1208YRZ achieves an on-resistance of 200 Ω max, with channel-to-channel resistance matching of max 6 Ω and flatness of 64 Ω. The device exhibits extremely low off-state leakage (≤1 nA across temperature), with channel capacitance (off) at 1.5 pF and off isolation at -85 dB at 1 MHz, supporting clean switching in high-impedance circuits.

In single-supply configurations (+12 V), the on-resistance increases (475 Ω max), with slightly higher capacitance, suitable for systems where single rail operation is required. Fast digital response is guaranteed, with TTL/CMOS-compatible logic thresholds (2.0 V min for logic high) and minimal digital input currents (max 0.1 μA).

Total harmonic distortion plus noise remains low (0.15% typical), making the device suitable for audio and instrumentation applications where fidelity is paramount. Power consumption is negligible in static mode (<0.03 μW), critical in battery-powered devices, but can rise to 380 μA typical during active digital operation.

ADG1208YRZ Packaging and Pinout Details

The ADG1208YRZ is provided in a compact 16-lead SOIC package (3.9 mm width), facilitating automated surface mount assembly and efficient layout. The pin configuration is designed to support logical grouping of control and signal paths—essential for accurate PCB routing in data acquisition, test systems, and compact embedded instruments. Pin assignments include source terminals S1–S8, common drain D, logic inputs A0–A2, EN, supply pins VDD, VSS, and GND.

ADG1208YRZ Environmental and Reliability Ratings

For industrial reliability, the ADG1208YRZ is specified for operation from -40°C to +125°C, suiting both laboratory and field-deployed systems. It is RoHS3 and REACH compliant, with Moisture Sensitivity Level (MSL-1, unlimited) and an HTSUS code of 8542.39.0001 for export classification. Maximum junction temperature is 150°C, supporting robust operation under sustained power dissipation, with thermal impedances tailored for TSSOP, LFCSP, and SOIC packages.

ADG1208YRZ Typical Application Cases

The precise switching characteristics and low signal error profile of the ADG1208YRZ make it highly suitable in:

Audio and video routing, where bandwidth and isolation are essential to prevent cross-talk.

Data acquisition systems, demanding fast, low-leakage multiplexing for precision measurements.

Automatic test equipment, requiring predictable switching performance and minimal charge injection.

Battery-powered devices, where ultralow power consumption and minimal leakage directly translate to extended operating life.

Communication systems and sample-and-hold circuits, benefiting from low capacitance and rapid switching.

Alternative or Substitute Models for ADG1208YRZ

When evaluating alternatives to the ADG1208YRZ, engineers may consider related models within the ADG120x family, such as the ADG1209 for differential channel switching applications. Comparable multiplexers like the ADG1204 (four-channel) or competition from similar high-voltage CMOS analog multiplexers should be assessed according to on-resistance, channel count, voltage range, switching speed, and package compatibility for system fit and reliability.

Conclusion

The Analog Devices ADG1208YRZ sets a high standard for analog multiplexers, combining advanced iCMOS technology with flexible electrical characteristics, robust switching performance, and strict environmental compliance. Its integration-friendly package and reliable operation across a broad range of conditions make it a valuable component for engineers and procurement professionals demanding consistent performance in mixed-signal, data acquisition, and high-voltage routing applications. Careful review of key specifications and pin configuration, in parallel with consideration of functionally equivalent devices, ensures optimal device selection for both new designs and maintenance requirements.