Analog Devices Inc. REF192GS-REEL

Overview

REF192GS-REEL from Analog Devices is a precision micropower low-dropout (LDV) voltage reference IC delivering a stable 2.50 V output with ±2 mV initial accuracy, 5 ppm/°C max temperature coefficient, and 45 μA max supply current. It operates from supplies as low as 100 mV above output voltage and supports 30 mA load current-ideal for high-accuracy ADC/DAC biasing in portable instrumentation.

For engineers reviewing the REF192GS-REEL datasheet, REF192GS-REEL pinout, REF192GS-REEL application, or REF192GS-REEL equivalent, key selection criteria include dropout voltage at 10 mA (1.00 V), sleep-mode current (≤15 μA), load regulation (4 ppm/mA), and SOIC_N package compatibility with Kelvin sensing layouts.

Technical Context

The REF192GS-REEL implements a patented temperature drift curvature correction circuit combined with laser-trimmed thin-film resistors to achieve its 5 ppm/°C max TC over −40°C to +85°C. Its band gap core is augmented by an active dropout control architecture enabling operation with only 100 mV headroom.

Sleep mode is activated via TTL/CMOS-compatible SLEEP pin (V_L ≤ 0.8 V), disabling output and reducing supply current to ≤15 μA while preserving fast wake-up. Output short-circuit protection and 1 μF mandatory output bypass capacitor ensure robustness in low-power sensor nodes.

Key Specifications

Pinout & Package

REF192GS-REEL is housed in an 8-lead SOIC_N (SOIC narrow-body) package, pin-compatible with industry-standard SOIC-8 footprints and optimized for thermal stability in compact PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision voltage reference applications.

Compared with ADR3425ARJZ-R7 and MAX6126AASA+T, REF192GS-REEL uniquely balances micropower operation (45 μA), programmable disable (sleep pin), and SOIC-N layout compatibility - making it optimal for space-constrained, battery-gated measurement systems where both accuracy and dynamic power control are required.

Availability

REF192GS-REEL is available at Aetrix Electronics and suitable for portable instrumentation, precision data acquisition, and solar-powered sensor nodes requiring stable component supply with guaranteed long-term parametric consistency.

Supply support for REF192GS-REEL 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 leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.

The REF19x series was designed specifically for micropower, low-dropout precision reference needs in portable and energy-harvesting systems - emphasizing TC stability, sleep-mode efficiency, and SOIC-N manufacturability.

FAQ

What is the maximum load current supported by REF192GS-REEL?

The REF192GS-REEL delivers up to 30 mA of output current while maintaining specified accuracy and regulation performance. At 30 mA load, dropout voltage rises to 1.40 V (at VS = 3.9 V), and load regulation remains within 10 ppm/mA. This capability supports driving multiple op-amps, ADC references, and sensor excitation circuits directly from a single REF192GS-REEL device.

Does REF192GS-REEL require an output capacitor, and if so, what value and type?

Yes, REF192GS-REEL requires a minimum 1 μF ceramic capacitor connected between OUTPUT and GND pins for stability and noise reduction. The datasheet specifies X7R or better dielectric with low ESR (<1 Ω). Larger values (e.g., 10 μF) may further reduce low-frequency noise but do not affect regulation; tantalum or electrolytic capacitors are not recommended due to ESR and reliability concerns.

How does the SLEEP pin function on REF192GS-REEL, and what happens to the output during sleep?

The SLEEP pin on REF192GS-REEL is an active-low digital control input. When pulled to ≤0.8 V (logic low), the internal reference core powers down, output voltage collapses to near 0 V, and supply current drops to ≤15 μA. Output resumes within microseconds after SLEEP returns high; no reset sequence or delay is required. This behavior is fully characterized across −40°C to +85°C.

Can REF192GS-REEL operate from a 2.7 V supply?

No - REF192GS-REEL cannot reliably regulate at 2.7 V. With a 2.50 V nominal output, minimum dropout is 1.00 V at 10 mA (per Table 5), requiring ≥3.5 V supply under that load. At no load, dropout falls to ~100 mV, but the device is not characterized or guaranteed below VS = 3.0 V. For 2.7 V operation, consider alternatives like the ADR3425 (2.5 V, 0.3 V dropout).

What is the long-term stability specification for REF192GS-REEL, and how is it measured?

REF192GS-REEL exhibits 1.2 mV maximum long-term output drift after 1000 hours of operation at +125°C - a noncumulative specification meaning subsequent 1000-hour periods show significantly lower drift. This metric reflects aging of the band gap core and laser-trimmed resistors, and is validated per JEDEC JESD22-A108 stress testing protocols. At room temperature, typical drift is <0.2 mV over 10 years.