REF192ESZ - 2.5V Precision Micropower Voltage Reference | Analog Devices
MPN: REF192ESZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.15 | $8.15 |
| 10 | $7.45 | $74.50 |
| 100 | $6.75 | $675.00 |
| 500 | $6.1 | $3,050.00 |
| 1,000 | $5.5 | $5,500.00 |
Drop-in alternatives for REF192ESZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
REF192GSZ
✅ Drop-In📋 Reference alternative (not in catalog)
REF192ES
✅ Drop-In📋 Reference alternative (not in catalog)
REF192ESZ-REEL7
✅ Drop-In📋 Reference alternative (not in catalog)
REF5025AIDGKT
⚡ Same Package📋 Reference alternative (not in catalog)
MAX6126AASA25+
⚡ Same Package📋 Reference alternative (not in catalog)
REF192ESZ Maximum Ratings & Electrical Characteristics
| Output Voltage | 2.5 V |
| Initial Accuracy | ±0.08% |
| Temperature Coefficient | 5 ppm/°C (grade A) |
| Input Voltage Range | 2.5 V to 15 V |
| Quiescent Current | 45 µA (typical) |
| Dropout Voltage | 200 mV (typical) at 30 mA |
| Output Current | 30 mA (max) |
| Line Regulation | 10 ppm/V (typical) |
| Load Regulation | 20 ppm/mA (typical) |
| Sleep Mode Current | < 2 µA |
| Operating Temperature Range | -40°C to +85°C |
| Package | SOIC-8 |
| Mounting Type | Surface Mount |
| Thermal Resistance (θJA) | 150°C/W (approximate) |
| RoHS Status | Compliant |
REF192ESZ Pin Configuration
| Pin 1 | NC — No connect |
| Pin 2 | NC — No connect |
| Pin 3 | GND — Ground |
| Pin 4 | NC — No connect |
| Pin 5 | OUT — Voltage reference output |
| Pin 6 | SENSE — Sense input for remote sensing |
| Pin 7 | IN — Input supply |
| Pin 8 | SLEEP — Sleep mode control (active low) |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
REF192ESZ is suitable for 6 applications: Precision Data Acquisition Systems, Portable Instrumentation, Battery-Powered Devices, Industrial Process Control, Automotive Electronics, Medical Devices.
Precision Data Acquisition Systems
The REF192ESZ provides a stable 2.5V reference for ADCs and DACs in data acquisition systems. Its low temperature coefficient (5 ppm/°C) and high initial accuracy (±0.08%) ensure accurate conversions over temperature. The low quiescent current (45 µA) minimizes power consumption in battery-powered loggers. With 30 mA output capability, it can drive multiple converter references. The SOIC-8 package is easy to integrate into compact designs.
Recommended
Portable Instrumentation
In portable instruments like multimeters and field transmitters, the REF192ESZ's micropower operation (45 µA) extends battery life. Its low dropout voltage (200 mV) allows operation from a 3V battery down to 2.5V. The sleep mode (<2 µA) is ideal for power-cycled systems. The device's accuracy ensures reliable measurements in field conditions. The SOIC-8 package is compact for handheld designs.
Recommended
Battery-Powered Devices
The REF192ESZ is ideal for battery-powered devices such as wireless sensors and wearables. Its 45 µA quiescent current and sleep mode (<2 µA) minimize power drain. The wide input range (2.5V to 15V) accommodates varying battery voltages. The low dropout ensures regulation even when the battery is nearly discharged. The precision output maintains accuracy for sensor interfaces.
Recommended
Industrial Process Control
In industrial process control, the REF192ESZ provides a stable reference for 4-20 mA loops and PLC analog inputs. Its temperature coefficient (5 ppm/°C) ensures accuracy over the industrial temperature range (-40°C to +85°C). The low quiescent current reduces heat generation in sealed enclosures. The 30 mA output can drive multiple stages. The SOIC-8 package is robust for industrial environments.
Recommended
Automotive Electronics
The REF192ESZ is suitable for automotive applications such as battery management systems and sensor interfaces. Its wide input range (2.5V to 15V) handles automotive supply variations. The low quiescent current is beneficial for always-on modules. The precision output ensures accurate measurements in harsh conditions. The SOIC-8 package is AEC-Q100 qualified? [DATA_NEEDED: AEC-Q100 qualification]
Recommended
Medical Devices
In medical devices like patient monitors and diagnostic equipment, the REF192ESZ provides a stable reference for precision analog front-ends. Its low noise and high accuracy are critical for reliable readings. The low power consumption is suitable for battery-operated devices. The wide temperature range ensures operation in clinical environments. The SOIC-8 package is easy to integrate into compact medical PCBs.
Recommended
Recommended Products Summary
Engineering reference data for REF192ESZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | REF192GSZ | REF192ES | REF5025AIDGKT |
|---|---|---|---|---|
| Package | SOIC-8 | SOIC-8 | SOIC-8 | SOIC-8 |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Output Voltage | 2.5V | 2.5V | 2.5V | 2.5V |
| Initial Accuracy | ±0.08% | ±0.08% | ±0.08% | ±0.05% |
| Temperature Coefficient | 5 ppm/°C | 5 ppm/°C | 5 ppm/°C | 3 ppm/°C |
| Quiescent Current | 45 µA | 45 µA | 45 µA | 800 µA |
| Output Current | 30 mA | 30 mA | 30 mA | 10 mA |
| Pin Compatibility | Yes | Yes | Yes | No |
Key Differentiators
- Ultra-low quiescent current of 45 µA (vs REF5025AIDGKT)
- Low dropout voltage of 200 mV (vs REF5025AIDGKT)
- Higher output current of 30 mA (vs REF5025AIDGKT)
Design Notes
Place a 1 µF to 10 µF bypass capacitor on the output pin (pin 5) to ensure stability and reduce noise. Also place a 0.1 µF capacitor on the input pin (pin 7) to filter high-frequency noise. Keep these capacitors as close to the pins as possible to minimize parasitic inductance.
The SOIC-8 package has a thermal resistance of approximately 150°C/W. At maximum output current (30 mA) and high input voltage (15V), power dissipation is about 0.375W, causing a temperature rise of about 56°C. Ensure adequate PCB copper area for heat dissipation, especially in high-temperature environments.
Avoid excessive capacitive loading on the output, as it can cause oscillation. The REF192ESZ is designed for stable operation with capacitive loads up to 10 µF, but larger loads may require a series resistor. Also, ensure the input voltage does not exceed 15V to prevent damage.
Compliance Information
RoHS compliant per Analog Devices product page. AEC-Q100 qualification not specified for this part.
