Analog Devices Inc. AD585SE

Overview

AD585SE from Analog Devices is a monolithic high-speed precision sample-and-hold amplifier designed for 10- and 12-bit data acquisition systems. It delivers 3 µs acquisition time to ±0.01%, 0.5 ns aperture jitter, 1.0 mV/ms max droop rate, and operates across –55°C to +125°C using ±12 V or ±15 V supplies. Its internal 100 pF hold capacitor and matched thin-film application resistors enable immediate deployment in military-grade analog signal conditioning.

For engineers reviewing the AD585SE datasheet, AD585SE pinout, AD585SE application, or AD585SE equivalent, this device is selected for high-fidelity sampling of fast-changing analog signals-especially where low sample-to-hold offset (≤±3 mV), minimal aperture uncertainty, and extended temperature stability are mandatory in MIL-STD-883-compliant systems.

Technical Context

The AD585SE integrates a FET-input integrating amplifier, ultralow-leakage analog switch, and on-chip 100 pF hold capacitor in a single die. Its differential HOLD/HOLD logic interface accepts TTL-compatible reference levels (1.2–1.6 V) and supports active-high or active-low control without external level-shifting.

It achieves 10 V p-p full-scale sampling at up to 78 kHz with 12-bit precision due to 0.5 ns aperture jitter and 160 kHz full-power bandwidth. Output impedance remains ≤0.05 Ω in sample mode, enabling direct drive of successive-approximation ADCs like AD574A and AD7672 without buffering.

Key Specifications

Pinout & Package

AD585SE is housed in a 20-terminal leadless ceramic chip carrier (LCC, package code E-20A), hermetically sealed for high-reliability operation in harsh environments. The package features solder-leaded terminations compatible with standard reflow profiles and meets MIL-STD-883 thermal cycling requirements.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar sample-and-hold amplifier applications.

Compared with AD585SQ and HA-5320-5, the AD585SE provides superior thermal robustness in LCC packaging, guaranteed 0.5 ns aperture jitter, and zero-external-component operation - making it optimal for new designs demanding minimal layout risk and full MIL-STD-883 traceability.

Availability

AD585SE is available at Aetrix Electronics and suitable for radar signal conditioning, avionics data acquisition, and MIL-STD-1553B bus monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for AD585SE 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

Analog Devices is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and control.

The AD585 product line was engineered specifically for military- and aerospace-grade data acquisition systems requiring guaranteed sub-microsecond acquisition, nanosecond-level timing fidelity, and operation across –55°C to +125°C without derating.

FAQ

What is the maximum input signal frequency supported by the AD585SE with 12-bit accuracy?

The AD585SE supports up to 77.7 kHz full-scale input frequency with ≤½ LSB error when used with a 12-bit ADC, calculated from its 0.5 ns aperture jitter and 10 V p-p full-scale range. This limit assumes ideal system conditions including proper grounding, stable power supplies, and matched source impedance - actual performance may vary slightly depending on PCB layout and external component selection in the AD585SE circuit.

Does the AD585SE require an external hold capacitor for basic operation?

No, the AD585SE does not require an external hold capacitor for basic operation because it integrates a 100 pF capacitor internally. This allows immediate use in sample-and-hold configurations with 1.0 mV/ms max droop rate at +25°C. An external capacitor may be added between Pins 7 and 8 only if longer hold times or lower droop are needed - for example, to maintain <0.1 mV drift over 10 ms in high-accuracy applications using the AD585SE.

What logic families are compatible with the AD585SE HOLD and HOLD inputs?

The AD585SE HOLD and HOLD inputs are compatible with TTL, CMOS, and ECL logic families due to their differential input architecture and programmable threshold. An internal 1.4 V reference is provided for TTL compatibility, and external references between (–V_S +4 V) and (+V_S –3 V) can be applied to either input to set custom logic thresholds - enabling reliable interfacing without level shifters in mixed-voltage AD585SE systems.

How does temperature affect the droop rate of the AD585SE?

The droop rate of the AD585SE doubles every 10°C increase above +25°C due to leakage current doubling - for example, 1.0 mV/ms at +25°C becomes ~2.0 mV/ms at +35°C and ~4.0 mV/ms at +45°C. This behavior is specified across the full –55°C to +125°C operating range, and users must account for it when designing hold-time margins for worst-case thermal conditions in AD585SE-based systems.

Is the AD585SE compliant with MIL-STD-883, and what tests are performed?

Yes, the AD585SE is offered in a MIL-STD-883-compliant version, tested per Method 5005 for steady-state life, Method 5007 for thermal shock, and Method 5011 for mechanical shock. These tests verify reliability under extreme environmental stress and are documented in the AD585/883B data sheet - confirming that each AD585SE unit meets military-grade screening requirements for aerospace and defense deployments.