REF192ESZ - 2.5V Precision Micropower Voltage Reference | Analog Devices
MPN: REF192ESZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.08 | $30.80 |
| 100 | $2.56 | $256.00 |
| 500 | $2.3 | $1,150.00 |
| 1,000 | $2.1 | $2,100.00 |
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)
REF192ESZ-REEL7
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REF192ES-REEL
✅ Drop-In📋 Reference alternative (not in catalog)
REF192GSZ-REEL7
✅ Drop-In📋 Reference alternative (not in catalog)
MAX6126AASA25+
✅ Drop-In📋 Reference alternative (not in catalog)
LT1021BCN8-2.5
✅ Drop-In📋 Reference alternative (not in catalog)
REF192ESZ Maximum Ratings & Electrical Characteristics
| Output Voltage | 2.5 V |
| Initial Accuracy | ±0.08% |
| Temperature Coefficient | 5 ppm/°C (max) |
| Input Voltage Range | 2.5 V to 15 V |
| Output Current | 30 mA (max) |
| Quiescent Current | 45 µA (typical) |
| Dropout Voltage | 200 mV (typical at 30 mA) |
| Line Regulation | 10 ppm/V (typical) |
| Load Regulation | 20 ppm/mA (typical) |
| Output Noise | 30 µVrms (typical, 0.1 Hz to 10 Hz) |
| Operating Temperature Range | -40°C to +85°C |
| Package | SOIC-8 |
| Mounting Type | Surface Mount |
| RoHS | Compliant |
| Lifecycle | Production |
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 voltage |
| 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 low noise (30 µVrms) ensure accurate conversions over a wide temperature range. The low quiescent current (45 µA) is ideal for battery-powered data loggers. The device can source up to 30 mA, sufficient for multiple converters. Its small SOIC-8 package saves board space in compact designs.
Recommended
Portable Instrumentation
In portable instruments like multimeters and handheld testers, the REF192ESZ offers a low-power, high-accuracy voltage reference. Its 45 µA quiescent current extends battery life, while the 2.5V output is compatible with many microcontrollers and sensors. The low dropout voltage (200 mV) allows operation from a 3V battery down to 2.5V. The device's small footprint and surface-mount package are ideal for space-constrained designs.
Recommended
Battery-Powered Devices
The REF192ESZ is well-suited for battery-powered devices such as wireless sensors and wearables. Its low quiescent current (45 µA) and sleep mode (<2 µA) minimize power consumption, extending battery life. The 2.5V output is ideal for powering analog front-ends and comparators. The wide input range (2.5V to 15V) accommodates various battery chemistries. The device's high accuracy ensures reliable performance over the battery's discharge cycle.
Recommended
Industrial Process Control
In industrial process control, the REF192ESZ provides a stable reference for analog I/O modules and PLCs. Its temperature coefficient of 5 ppm/°C ensures minimal drift over the industrial temperature range (-40°C to +85°C). The device can source up to 30 mA, driving multiple sensors and actuators. Its low noise and high accuracy improve the precision of control loops. The SOIC-8 package is robust for harsh environments.
Recommended
Automotive Electronics
The REF192ESZ is used in automotive electronics for battery monitoring, sensor interfaces, and infotainment systems. Its wide input voltage range (up to 15V) handles automotive power rails, and its low quiescent current is suitable for always-on modules. The device's accuracy and stability over temperature ensure reliable operation in extreme conditions. The SOIC-8 package is AEC-Q100 qualified, meeting automotive quality standards.
Recommended
Medical Devices
In medical devices such as patient monitors and diagnostic equipment, the REF192ESZ provides a precise voltage reference for signal conditioning circuits. Its low noise (30 µVrms) and high accuracy are critical for biomedical signal acquisition. The low power consumption is beneficial for battery-operated devices. The device's small size and reliability make it suitable for portable medical instruments.
Recommended
Recommended Products Summary
Engineering reference data for REF192ESZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | REF192GSZ | REF192ESZ-REEL7 | MAX6126AASA25+ |
|---|---|---|---|---|
| Package | SOIC-8 | SOIC-8 | SOIC-8 | SOIC-8 |
| Brand | Analog Devices | Analog Devices | Analog Devices | Maxim Integrated |
| Output Voltage | 2.5V | 2.5V | 2.5V | 2.5V |
| Initial Accuracy | ±0.08% | ±0.08% | ±0.08% | ±0.02% |
| Temperature Coefficient | 5 ppm/°C | 10 ppm/°C | 5 ppm/°C | 3 ppm/°C |
| Quiescent Current | 45 µA | 45 µA | 45 µA | 320 µA |
| Output Current | 30 mA | 30 mA | 30 mA | 10 mA |
| Dropout Voltage | 200 mV | 200 mV | 200 mV | 200 mV |
Key Differentiators
- Low quiescent current of 45 µA (vs MAX6126AASA25+)
- Higher output current capability of 30 mA (vs MAX6126AASA25+)
- Lower temperature coefficient of 5 ppm/°C (vs REF192GSZ)
Design Notes
Place a 1 µF to 10 µF bypass capacitor on the output pin (pin 5) and a 0.1 µF capacitor on the input pin (pin 7) close to the device. This ensures stability and reduces noise. Use a ground plane to minimize parasitic inductance and capacitance.
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 can be significant. Ensure adequate copper area on the PCB to dissipate heat, especially in high-temperature environments.
Do not exceed the input voltage rating of 15V. The sleep pin (pin 8) is active low; leave it unconnected or tie to VIN for normal operation. Avoid capacitive loads greater than 10 µF on the output, as this can cause oscillation. Use precision resistors in the sense path if remote sensing is used.
Compliance Information
RoHS compliant per Analog Devices product page. AEC-Q100 qualification not specified for this part.
