REF5050-EP
Precision Voltage ReferenceThe REF5050-EP is a precision voltage reference from Texas Instruments. View the full REF5050-EP datasheet below including key specifications, electrical characteristics, absolute maximum ratings.
REF5050-EP shares its datasheet with REF5050, whose page lists every part number it covers.
Official REF5050-EP datasheet (PDF) — the source this page was extracted from.
Manufacturer
Texas InstrumentsCategory
Voltage ReferencesREF5050-EP Key Specifications
| Parameter | Value |
|---|---|
| Output voltage | 5 V (REF5050) |
| Initial accuracy | ±0.025% (EI), ±0.05% (I), ±0.1% (AI) |
| Temperature drift (-40 to 125 °C) | 2.5 ppm/°C max (EI), 3 ppm/°C max (I), 8 ppm/°C max (AI) |
| Low-frequency noise (0.1–10 Hz) | 0.5 μVPP/V typ (EI), 3 μVPP/V typ (I/AI) |
| Line regulation | 3 ppm/V max at 25 °C (5 ppm/V max over temperature) |
| Load regulation (±10 mA) | 25 ppm/mA max (EI), 30 ppm/mA max (I/AI) |
| Quiescent current | 480 μA max (EI), 1.2 mA max (I/AI) |
| Short-circuit current | 21 mA typ (EI), 25 mA typ (I/AI) |
| Turn-on settling time (to 0.1%, CL = 1 μF) | 400 μs typ (EI), 200 μs typ (I/AI) |
| Long-term stability (0–1000 h, SOIC-8) | 25 ppm typ (EI), 22 ppm typ (I/AI); VSSOP-8: 50 ppm typ (I/AI) |
REF5050-EP Overview
Part: REF5050 (REF50xx family; REF5050EI / REF5050I / REF5050AI) — Texas Instruments
Type: Precision Series Voltage Reference (5.0 V output)
Description: Low-noise, low-drift 5.0 V precision voltage reference with ±10 mA sink/source capability, drift down to 2.5 ppm/°C and initial accuracy to ±0.025% (enhanced grade), with VIN up to 42 V (enhanced grade) or 18 V (high/standard grade).
Operating Conditions:
- Supply voltage (VIN): VOUT + 0.2 V to 18 V (REF50xxI/AI); VOUT + 0.2 V to 42 V (REF50xxEI)
- Operating temperature: -40 to 125 °C (specified)
- Output current: ±10 mA
- NR pin (REF50xxEI): 0 to 6 V
Absolute Maximum Ratings:
- Input voltage VIN: -0.3 to 18 V (REF50xxI/AI); -0.3 to 48 V (REF50xxEI)
- Output voltage VOUT: -0.3 to 5.5 V
- Junction temperature (TJ max): 150 °C
- Storage temperature: -65 to 150 °C
- Operating temperature (TA): -55 to 125 °C
Key Specs:
- Output voltage: 5 V (REF5050)
- Initial accuracy: ±0.025% (EI), ±0.05% (I), ±0.1% (AI)
- Temperature drift (-40 to 125 °C): 2.5 ppm/°C max (EI), 3 ppm/°C max (I), 8 ppm/°C max (AI)
- Low-frequency noise (0.1–10 Hz): 0.5 μVPP/V typ (EI), 3 μVPP/V typ (I/AI)
- Line regulation: 3 ppm/V max at 25 °C (5 ppm/V max over temperature)
- Load regulation (±10 mA): 25 ppm/mA max (EI), 30 ppm/mA max (I/AI)
- Quiescent current: 480 μA max (EI), 1.2 mA max (I/AI)
- Short-circuit current: 21 mA typ (EI), 25 mA typ (I/AI)
- Turn-on settling time (to 0.1%, CL = 1 μF): 400 μs typ (EI), 200 μs typ (I/AI)
- Long-term stability (0–1000 h, SOIC-8): 25 ppm typ (EI), 22 ppm typ (I/AI); VSSOP-8: 50 ppm typ (I/AI)
Features:
- Enhanced, high and standard grades
- Sinks and sources current
- TEMP pin for temperature monitoring (EI: 625 mV typ; I/AI: 575 mV typ; 2.64 mV/°C)
- EN pin for shutdown (REF50xxEI)
- Noise reduction (NR) pin (EI) or TRIM/NR pin (I/AI)
- ESD: HBM ±2000 V / CDM ±500 V (EI); HBM ±3000 V / CDM ±1000 V (I/AI)
Applications:
- Precision data acquisition systems
- Semiconductor test equipment
- Industrial process controls
- Medical instrumentation
- Pressure and temperature transmitters
- Lab and field instrumentation
Package:
- D (SOIC-8), 4.90 mm × 3.91 mm (all grades)
- DGK (VSSOP-8), 3.00 mm × 3.00 mm (REF50xxI, REF50xxAI only)
REF5050-EP Features
- Low temperature drift (maximum):
- -Enhanced-grade (new): 2.5ppm/°C
- -High-grade: 3ppm/°C
- -Standard-grade: 8ppm/°C
- High accuracy (maximum):
- -Enhanced-grade: 0.025%
- -High-grade: 0.05%
- -Standard-grade: 0.1%
- Low noise:
- -Enhanced-grade: 0.5μVPP/V
- -High/standard-grade: 3μVPP/V
- Excellent long-term stability:
- -22ppm after first 1000 hours (SOIC-8)
- -50ppm after first 1000 hours (VSSOP-8)
- Wide input voltage support:
- -Enhanced-grade: 42V
- -High/standard-grade: 18V
- High-output current: ±10mA
- Temperature range: -40°C to 125°C
REF5050-EP Applications
REF5050-EP Pin Configuration
Figure 5-1. REF50xxAI, REF50xxI 8-Pin SOIC, VSSOP Top View
Table 4-2. Device Performance Comparison
Figure 5-2. REF50xxEI 8-Pin SOIC Top View
Table 5-1. Pin Functions
| PIN - NAME | PIN - REF50xxI, REF50xxAI | PIN - REF50xxEI | DESCRIPTION |
|---|---|---|---|
| DNC | 1, 8 | 8 | Do not connect |
| EN | - | 1 | Device enable control. Low level input disables the reference output and device enters shutdown mode. Device can be enabled by driving voltage > 1.6V or leaving the EN pin floating. |
| GND | 4 | 4 | Ground |
| NC | 7 | No internal connection | |
| NC | 7 | Leave floating or connect to GND | |
| NR | - | 5 | Noise reduction pin |
| TEMP | 3 | 3 | Temperature monitoring pin. Provides a temperature-dependent output voltage |
| TRIM/NR | 5 | - | Output adjustment or noise reduction pin |
| V IN | 2 | 2 | Input supply voltage |
| V OUT | 6 | 6 | Reference voltage output |
Table 5-1. Pin Functions
REF5050-EP Electrical Characteristics
At TA = 25°C, I LOAD = 0, CL = 1μF and V IN = (V OUT + 0.2V) to 18V, unless otherwise noted
| PARAMETER | PARAMETER | TEST CONDITION | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|---|
| OUTPUT VOLTAGE | OUTPUT VOLTAGE | OUTPUT VOLTAGE | OUTPUT VOLTAGE | OUTPUT VOLTAGE | OUTPUT VOLTAGE | OUTPUT VOLTAGE |
| V OUT | Output Voltage | REF5020 (V OUT = 2.048V) (1) , 2.7V < V IN < 18V | 2.048 | V | ||
| V OUT | REF5025 | 2.5 | V | |||
| V OUT | REF5030 | 3.0 | V | |||
| V OUT | REF5040 | 4.096 | V | |||
| V OUT | REF5045 | 4.5 | V | |||
| V OUT | REF5050 | 5 | V | |||
| V OUT | REF5010 | 10 | V | |||
| Initial | High Grade | All voltage options (1) | -0.05 | 0.05 | % | |
| Accuracy | Standard Grade | All voltage options (1) | -0.1 | 0.1 | % | |
| NOISE | NOISE | NOISE | NOISE | NOISE | NOISE | NOISE |
| e npp | Low Frequency noise | ƒ = 0.1Hz to 10Hz | 3 | μV PP /V | ||
| e n | Output Voltage Noise | ƒ = 10Hz to 1kHz | 0.9 | μV rms /V | ||
| OUTPUT VOLTAGE TEMPERATURE DRIFT | OUTPUT VOLTAGE TEMPERATURE DRIFT | OUTPUT VOLTAGE TEMPERATURE DRIFT | OUTPUT VOLTAGE TEMPERATURE DRIFT | OUTPUT VOLTAGE TEMPERATURE DRIFT | OUTPUT VOLTAGE TEMPERATURE DRIFT | OUTPUT VOLTAGE TEMPERATURE DRIFT |
| dV OUT /dT | High grade | T = -40°C to 125°C | 2.5 | 3 | pm/ °C | |
| Standard grade | A | 3 | 8 | pm/ °C | ||
| LINE REGULATION | LINE REGULATION | LINE REGULATION | LINE REGULATION | LINE REGULATION | LINE REGULATION | LINE REGULATION |
| ΔV O(ΔVI) | Line regulation | V IN = (V OUT + 0.2V) to 18V (1) | 1 | 3 | ppm/V | |
| ΔV O(ΔVI) | V IN = (V OUT + 0.2V) TO 18V, T A = -40°C to 125°C (1) | 1 | 5 | ppm/V | ||
| LOAD REGULATION | LOAD REGULATION | LOAD REGULATION | LOAD REGULATION | LOAD REGULATION | LOAD REGULATION | LOAD REGULATION |
| ΔV O(ΔIL) | Load regulation | -10mA < I OUT < 10mA, V IN = V OUT + 0.75V (2) | 20 | 30 | ppm/mA | |
| ΔV O(ΔIL) | 10mA < I OUT < 10mA, V IN = V OUT + 0.75V (2) , T A = -40°C to 125°C | 50 | ppm/mA | |||
| SHORT-CIRCUIT CURRENT | SHORT-CIRCUIT CURRENT | SHORT-CIRCUIT CURRENT | SHORT-CIRCUIT CURRENT | SHORT-CIRCUIT CURRENT | SHORT-CIRCUIT CURRENT | SHORT-CIRCUIT CURRENT |
| I SC | Short circuit current | V OUT = 0 | 25 | mA | ||
| THERMAL HYSTERESIS | THERMAL HYSTERESIS | THERMAL HYSTERESIS | THERMAL HYSTERESIS | THERMAL HYSTERESIS | THERMAL HYSTERESIS | THERMAL HYSTERESIS |
| High grade | VSSOP-8 | Cycle 1 | 50 | ppm | ||
| High grade | Cycle 2 | 40 | ppm | |||
| High grade | SOIC-8 | Cycle 1 | 70 | ppm | ||
| High grade | Cycle 2 | 50 | ppm | |||
| Standard grade | VSSOP-8 | Cycle 1 | 70 | ppm | ||
| Standard grade | Cycle 2 | 40 | ppm | |||
| Standard grade | SOIC-8 | Cycle 1 Cycle 2 | 90 50 | ppm | ||
| LONG-TERM STABILITY | LONG-TERM STABILITY | LONG-TERM STABILITY | LONG-TERM STABILITY | LONG-TERM STABILITY | LONG-TERM STABILITY | LONG-TERM STABILITY |
| ΔV OUT_LTD | VSSOP-8 | 0 to 1000 hours | 50 | ppm | ||
| ΔV OUT_LTD | 1000 to 2000 hours | 25 | ppm | |||
| ΔV OUT_LTD | SOIC-8 | 0 to 1000 hours | 22 | ppm | ||
| TEMP PIN | TEMP PIN | TEMP PIN | TEMP PIN | TEMP PIN | TEMP PIN | TEMP PIN |
| Voltage output | Voltage output | 575 | mV | |||
| Temperature sensitivity | Temperature sensitivity | T A = -40°C to 125°C | 2.64 | mV/ °C |
REF5050-EP Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| Input voltage | V IN (2) | -0.3 | 18 | V |
| V IN (3) | -0.3 | 48 | V | |
| Output Voltage | V OUT | -0.3 | 5.5 | V |
| Operating temperature | (T A ) | -55 | 125 | °C |
| Junction temperature | (T J max) | 150 | °C | |
| Storage temperature range | (T stg ) | -65 | 150 | °C |
- (2) Specification for REF5xxI and REF50xxAI.
- (3) Specification for REF50xxEI.
REF5050-EP Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
| MIN | NOM | MAX | UNIT | ||
|---|---|---|---|---|---|
| V IN | Input voltage (2) | V OUT + 0.2 (1) | 18 | V | |
| V IN | Input voltage (3) | V OUT + 0.2 | 42 | V | |
| NR | Noise reduction (3) | 0 | 6 | V | |
| I OUT | Output current | -10 | 10 | mA | |
| T A | Operating ambient temperature | -40 | 25 | 125 | °C |
- (1) Except for the REF5020, where VIN (minimum) = 2.7V.
- (2) Specification for REF50xxI and REF50xxAI.
- (3) Specification for REF50xxEI.
REF5050-EP Thermal Information
| REF50xxEI | REF50xxI , REF50xxAI | REF50xxI , REF50xxAI | |||
|---|---|---|---|---|---|
| THERMAL METRIC (1) | THERMAL METRIC (1) | D (SOIC) 8 PINS | D (SOIC) | DGK (VSSOP) | UNIT |
| Junction-to-ambient thermal resistance | 120 | 8 PINS | 8 PINS | ||
| R θJA | 115 | 160.9 | °C/W | ||
| R θJC(top) | Junction-to-case (top) thermal resistance | 52 | 63.4 | 53.9 | °C/W |
| R θJB | Junction-to-board thermal resistance | 66 | 57.1 | 82.9 | °C/W |
| Ψ JT | Junction-to-top characterization parameter | 9.8 | 15.4 | 5.1 | °C/W |
| Ψ JB | Junction-to-board characterization parameter | 64.7 | 56.2 | 80.7 | °C/W |
| R θJC(bot) | Junction-to-case (bottom) thermal resistance | N/A | N/A | N/A | °C/W |
REF5050-EP Typical Application
Data acquisition systems often require stable voltage references to maintain accuracy. The REF50xx family features low noise, very low drift, and high initial accuracy for high-performance data converters. Figure 9-1 shows the REF5040 in a basic data acquisition system.
REF5050-EP Package Information
| PART NUMBER | PACKAGE (1) | PACKAGE SIZE (2) |
|---|---|---|
| REF50xxI REF50xxAI | D (SOIC, 8) | 4.90mm × 3.91mm |
| DGK (VSSOP, 8) | 3.00mm × 3.00mm | |
| REF50xxEI | D (SOIC, 8) | 4.90mm × 3.91mm |
- (1) For all available packages, see the orderable addendum at the end of the data sheet.
- (2) The package size (length × width) is a nominal value and includes pins, where applicable.
Copyright © 2016, Texas Instruments Incorporated
Simplified Schematic
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