SBOS471B April 2010 – June 2015 REF5020-EP , REF5025-EP , REF5040-EP , REF5050-EP
PRODUCTION DATA.
The REF50xx is a family of low-noise, very low-drift, very high precision voltage references. These references are capable of both sinking and sourcing, and are very robust with regard to line and load changes.
Excellent temperature drift and high accuracy are achieved using proprietary design techniques. These features, combined with very low noise, make the REF50xx family ideal for use in high-precision data acquisition systems.
They are offered in SOIC-8 packages, and are specified from –55°C to 125°C.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
REF50xx-EP | SOIC (8) | 4.90 mm × 3.91 mm |
Changes from A Revision (October 2012) to B Revision
PIN | I/O | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
DNC | 1 | — | Do not connect |
VIN | 2 | Power | Power supply voltage. Range from VOUT + 0.2 V up to 18 V. Recommended bypass capacitor from 1 µF up to 10 µF |
TEMP | 3 | O | Temperature monitoring pin provides a temperature-dependent voltage output |
GND | 4 | Power | System ground |
TRIM/NR | 5 | I | Output adjustment and noise reduction input. Connecting 1 µF to this pin will create low pas filter at the bandgap and reduce output noise |
VOUT | 6 | O | Very accurate, factory-trimmed voltage output. Recommended bypass capacitor from 1 µF up to 50 µF with ESR between 1 and 1.5 Ω |
NC | 7 | — | No internal connection |
DNC | 8 | — | Do not connect |
MIN | MAX | UNIT | ||
---|---|---|---|---|
Input voltage | VIN | 18 | V | |
Output short-circuit | 30 | mA | ||
Operating temperature | –55 | 125 | °C | |
Junction temperature, TJ | 150 | °C | ||
Storage temperature, Tstg | –65 | 150 | °C |
VALUE | UNIT | |||
---|---|---|---|---|
V(ESD) | Electrostatic discharge | Human body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) | ±3000 | V |
Charged-device model (CDM), per JEDEC specification JESD22-C101(2) | ±1000 |
MIN | MAX | UNIT | ||
---|---|---|---|---|
VIN | VOUT + 0.2 V | 18 | V | |
IOUT | –10 | 10 | mA |
THERMAL METRIC(1) | REF502x-EP | UNIT | |
---|---|---|---|
D (SOIC) | |||
8 PINS | |||
RθJA | Junction-to-ambient thermal resistance | 97.1 | °C/W |
RθJC(top) | Junction-to-case (top) thermal resistance | 42.2 | °C/W |
RθJB | Junction-to-board thermal resistance | 34.6 | °C/W |
PARAMETER | TEST CONDITIONS | TA = 25°C | TA = –55°C to 125°C | UNIT | ||||||
---|---|---|---|---|---|---|---|---|---|---|
MIN | TYP | MAX | MIN | TYP | MAX | |||||
REF5020 (VOUT = 2.048V)(1) | ||||||||||
OUTPUT VOLTAGE | ||||||||||
Output Voltage | VOUT | 2.7 V < VIN < 18 V | 2.048 | V | ||||||
Initial Accuracy | –0.05% | 0.05% | ||||||||
Over Temperature | –0.08% | 0.08% | ||||||||
NOISE | ||||||||||
Output Voltage Noise | f = 0.1 Hz to 10 Hz | 6 | μVPP | |||||||
REF5025 (VOUT = 2.5 V) | ||||||||||
OUTPUT VOLTAGE | ||||||||||
Output Voltage | VOUT | 2.5 | V | |||||||
Initial Accuracy | –0.05% | 0.05% | ||||||||
NOISE | ||||||||||
Output Voltage Noise | f = 0.1 Hz to 10 Hz | 7.5 | μVPP | |||||||
REF5040 (VOUT = 4.096V) | ||||||||||
OUTPUT VOLTAGE | ||||||||||
Output Voltage | VOUT | 4.096 | V | |||||||
Initial Accuracy | –0.05% | 0.05% | ||||||||
Over Temperature | –0.08% | 0.08% | ||||||||
NOISE | ||||||||||
Output Voltage Noise | f = 0.1 Hz to 10 Hz | 12 | μVPP | |||||||
REF5050 (VOUT = 5 V) | ||||||||||
OUTPUT VOLTAGE | ||||||||||
Output Voltage | VOUT | 5 | V | |||||||
Initial Accuracy | –0.05% | 0.05% | ||||||||
Over Temperature | –0.08% | 0.08% | ||||||||
NOISE | ||||||||||
Output Voltage Noise | f = 0.1 Hz to 10 Hz | 15 | μVPP |
PARAMETER | TEST CONDITIONS | TA = 25°C | TA = –55°C to 125°C | UNIT | ||||||
---|---|---|---|---|---|---|---|---|---|---|
MIN | TYP | MAX | MIN | TYP | MAX | |||||
OUTPUT VOLTAGE TEMPERATURE DRIFT | ||||||||||
Output Voltage Temperature Drift | dVOUT/dT | |||||||||
REF5025 | 4 | 6.5 | ppm/°C | |||||||
REF5050 | 4 | 6.5 | ppm/°C | |||||||
All other devices | 3 | 5 | ppm/°C | |||||||
LINE REGULATION | ||||||||||
Line Regulation | dVOUT/dVIN | |||||||||
REF5020(1) | VIN = 2.7 V to 18V | 0.1 | 1 | ppm/V | ||||||
All other devices | VIN = VOUT + 0.2 V | 0.1 | 1 | ppm/V | ||||||
Over Temperature | 1 | 3 | ppm/V | |||||||
LOAD REGULATION | ||||||||||
Load Regulation | dVOUT/dILOAD | |||||||||
REF5020 | –10 mA < ILOAD < +10 mA, VIN = 3 V | 20 | 30 | ppm/mA | ||||||
All other devices | –10 mA < ILOAD < +10 mA, VIN = VOUT + 0.75 V | 20 | 30 | ppm/mA | ||||||
Over Temperature | 60 | ppm/mA | ||||||||
SHORT-CIRCUIT CURRENT | ||||||||||
Short-Circuit Current | ISC | VOUT = 0 | 25 | mA | ||||||
TEMP PIN | ||||||||||
Voltage Output | At TA = 25°C | 575 | mV | |||||||
Temperature Sensitivity | 2.64 | mV/°C | ||||||||
TURNON SETTLING TIME | ||||||||||
Turnon Settling Time | To 0.1% with CL = 1 μF | 200 | μs | |||||||
POWER SUPPLY | ||||||||||
Supply Voltage | VIN | See Note (1) | VOUT + 0.2(1) | 18 | V | |||||
Quiescent Current | 0.8 | 1 | mA | |||||||
Over Temperature | 1.25 | mA | ||||||||
TEMPERATURE RANGE | ||||||||||
Specified Range | –55 | 125 | °C | |||||||
Operating Range | –55 | 125 | °C | |||||||
Thermal Resistance | θJA | 150 | °C/W |
0°C to 85°C |
REF5025, CL = 10 μF |
CL = 1 μF, IOUT = 10 mA |
CL = 10 μF, IOUT = 10 mA |
CL = 10 μF |
–40°C to 125°C |
REF5025, CL = 1 μF |
CL = 1 μF, IOUT = 1 mA |
CL = 10 μF, IOUT = 1 mA |
CL = 1 μF |